AsmMatcherEmitter.cpp revision 8409bfbbc306bc051fbd8b049804103ca7df2f63
1d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar//===- AsmMatcherEmitter.cpp - Generate an assembly matcher ---------------===// 2d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// 3d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// The LLVM Compiler Infrastructure 4d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// 5d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// This file is distributed under the University of Illinois Open Source 6d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// License. See LICENSE.TXT for details. 7d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// 8d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar//===----------------------------------------------------------------------===// 9d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// 10d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// This tablegen backend emits a target specifier matcher for converting parsed 11d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// assembly operands in the MCInst structures. 12d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar// 1320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// The input to the target specific matcher is a list of literal tokens and 1420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// operands. The target specific parser should generally eliminate any syntax 1520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// which is not relevant for matching; for example, comma tokens should have 1620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// already been consumed and eliminated by the parser. Most instructions will 1720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// end up with a single literal token (the instruction name) and some number of 1820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// operands. 1920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 2020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// Some example inputs, for X86: 2120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 'addl' (immediate ...) (register ...) 2220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 'add' (immediate ...) (memory ...) 2320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 'call' '*' %epc 2420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 2520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// The assembly matcher is responsible for converting this input into a precise 2620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// machine instruction (i.e., an instruction with a well defined encoding). This 2720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// mapping has several properties which complicate matching: 2820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 2920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// - It may be ambiguous; many architectures can legally encode particular 3020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// variants of an instruction in different ways (for example, using a smaller 3120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// encoding for small immediates). Such ambiguities should never be 3220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// arbitrarily resolved by the assembler, the assembler is always responsible 3320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// for choosing the "best" available instruction. 3420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 3520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// - It may depend on the subtarget or the assembler context. Instructions 3620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// which are invalid for the current mode, but otherwise unambiguous (e.g., 3720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// an SSE instruction in a file being assembled for i486) should be accepted 3820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// and rejected by the assembler front end. However, if the proper encoding 3920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// for an instruction is dependent on the assembler context then the matcher 4020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// is responsible for selecting the correct machine instruction for the 4120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// current mode. 4220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 4320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// The core matching algorithm attempts to exploit the regularity in most 4420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// instruction sets to quickly determine the set of possibly matching 4520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// instructions, and the simplify the generated code. Additionally, this helps 4620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// to ensure that the ambiguities are intentionally resolved by the user. 4720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 4820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// The matching is divided into two distinct phases: 4920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 5020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 1. Classification: Each operand is mapped to the unique set which (a) 5120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// contains it, and (b) is the largest such subset for which a single 5220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// instruction could match all members. 5320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 5420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// For register classes, we can generate these subgroups automatically. For 5520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// arbitrary operands, we expect the user to define the classes and their 5620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// relations to one another (for example, 8-bit signed immediates as a 5720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// subset of 32-bit immediates). 5820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 5920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// By partitioning the operands in this way, we guarantee that for any 6020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// tuple of classes, any single instruction must match either all or none 6120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// of the sets of operands which could classify to that tuple. 6220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 6320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// In addition, the subset relation amongst classes induces a partial order 6420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// on such tuples, which we use to resolve ambiguities. 6520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 6620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// FIXME: What do we do if a crazy case shows up where this is the wrong 6720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// resolution? 6820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 6920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 2. The input can now be treated as a tuple of classes (static tokens are 7020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// simple singleton sets). Each such tuple should generally map to a single 7120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// instruction (we currently ignore cases where this isn't true, whee!!!), 7220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// which we can emit a simple matcher for. 7320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar// 74d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar//===----------------------------------------------------------------------===// 75d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar 76d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar#include "AsmMatcherEmitter.h" 77d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar#include "CodeGenTarget.h" 78d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar#include "Record.h" 7920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar#include "llvm/ADT/OwningPtr.h" 80a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar#include "llvm/ADT/SmallVector.h" 81606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar#include "llvm/ADT/STLExtras.h" 8220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar#include "llvm/ADT/StringExtras.h" 8320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar#include "llvm/Support/CommandLine.h" 84a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar#include "llvm/Support/Debug.h" 85a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar#include <list> 86b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar#include <map> 87b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar#include <set> 88d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbarusing namespace llvm; 89d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar 902724915c171b08fa9f7f9e54a46ea81708d9c5b2Daniel Dunbarstatic cl::opt<std::string> 91606e8ad796f72824f5509e2657c44eca025d4bafDaniel DunbarMatchPrefix("match-prefix", cl::init(""), 92606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar cl::desc("Only match instructions with the given prefix")); 9320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 94a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// FlattenVariants - Flatten an .td file assembly string by selecting the 95a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// variant at index \arg N. 96a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbarstatic std::string FlattenVariants(const std::string &AsmString, 97a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned N) { 98a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar StringRef Cur = AsmString; 99a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar std::string Res = ""; 100a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 101a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (;;) { 10253a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Find the start of the next variant string. 10353a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar size_t VariantsStart = 0; 10453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart) 10553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (Cur[VariantsStart] == '{' && 10620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar (VariantsStart == 0 || (Cur[VariantsStart-1] != '$' && 10720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Cur[VariantsStart-1] != '\\'))) 10853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar break; 10953a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 11053a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Add the prefix to the result. 11153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar Res += Cur.slice(0, VariantsStart); 11253a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (VariantsStart == Cur.size()) 113a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar break; 114a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 11553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar ++VariantsStart; // Skip the '{'. 11653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 11753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Scan to the end of the variants string. 11853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar size_t VariantsEnd = VariantsStart; 11953a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar unsigned NestedBraces = 1; 12053a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) { 12120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') { 12253a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (--NestedBraces == 0) 12353a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar break; 12453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } else if (Cur[VariantsEnd] == '{') 12553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar ++NestedBraces; 12653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } 127a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 128a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar // Select the Nth variant (or empty). 12953a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar StringRef Selection = Cur.slice(VariantsStart, VariantsEnd); 130a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (unsigned i = 0; i != N; ++i) 131a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Selection = Selection.split('|').second; 132a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Res += Selection.split('|').first; 133a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 13453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar assert(VariantsEnd != Cur.size() && 13553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar "Unterminated variants in assembly string!"); 13653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar Cur = Cur.substr(VariantsEnd + 1); 137a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 138a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 139a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar return Res; 140a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar} 141a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 142a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// TokenizeAsmString - Tokenize a simplified assembly string. 14320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstatic void TokenizeAsmString(const StringRef &AsmString, 144a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar SmallVectorImpl<StringRef> &Tokens) { 145a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned Prev = 0; 146a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar bool InTok = true; 147a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (unsigned i = 0, e = AsmString.size(); i != e; ++i) { 148a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar switch (AsmString[i]) { 14920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '[': 15020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case ']': 151a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '*': 152a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '!': 153a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case ' ': 154a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '\t': 155a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case ',': 156a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar if (InTok) { 15720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 158a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar InTok = false; 159a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 16020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!isspace(AsmString[i]) && AsmString[i] != ',') 16120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(i, 1)); 162a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Prev = i + 1; 163a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar break; 16420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 16520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '\\': 16620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 16720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 16820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 16920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 17020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar ++i; 17120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar assert(i != AsmString.size() && "Invalid quoted character"); 17220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(i, 1)); 17320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = i + 1; 17420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 17520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 17620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '$': { 17720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If this isn't "${", treat like a normal token. 17820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (i + 1 == AsmString.size() || AsmString[i + 1] != '{') { 17920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 18020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 18120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 18220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 18320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = i; 18420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 18520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 18620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 18720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 18820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 18920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 19020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 19120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 19220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef::iterator End = 19320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::find(AsmString.begin() + i, AsmString.end(), '}'); 19420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar assert(End != AsmString.end() && "Missing brace in operand reference!"); 19520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar size_t EndPos = End - AsmString.begin(); 19620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(i, EndPos+1)); 19720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = EndPos + 1; 19820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar i = EndPos; 19920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 20020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 201a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 202a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar default: 203a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar InTok = true; 204a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 205a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 206a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar if (InTok && Prev != AsmString.size()) 20720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(Prev)); 208a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar} 209a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 21020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstatic bool IsAssemblerInstruction(const StringRef &Name, 21120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction &CGI, 21220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const SmallVectorImpl<StringRef> &Tokens) { 21320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore psuedo ops. 21420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 21520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This is a hack. 21620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (const RecordVal *Form = CGI.TheDef->getValue("Form")) 21720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Form->getValue()->getAsString() == "Pseudo") 21820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 21920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 22020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore "PHI" node. 22120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 22220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This is also a hack. 22320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Name == "PHI") 22420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 22520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 22672fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar // Ignore "Int_*" and "*_Int" instructions, which are internal aliases. 22772fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar // 22872fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar // FIXME: This is a total hack. 22972fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar if (StringRef(Name).startswith("Int_") || StringRef(Name).endswith("_Int")) 23072fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar return false; 23172fa87f0cfe22faa575280dbac8dbc9225dfb12dDaniel Dunbar 23220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions with no .s string. 23320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 23420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: What are these? 23520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (CGI.AsmString.empty()) 23620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 23720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 23820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Hack; ignore any instructions with a newline in them. 23920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (std::find(CGI.AsmString.begin(), 24020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar CGI.AsmString.end(), '\n') != CGI.AsmString.end()) 24120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 24220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 24320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions with attributes, these are always fake instructions for 24420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // simplifying codegen. 24520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 24620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Is this true? 24720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 24820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Also, we ignore instructions which reference the operand multiple times; 24920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // this implies a constraint we would not currently honor. These are 25020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // currently always fake instructions for simplifying codegen. 25120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 25220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Encode this assumption in the .td, so we can error out here. 25320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::set<std::string> OperandNames; 25420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 1, e = Tokens.size(); i < e; ++i) { 25520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Tokens[i][0] == '$' && 25620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::find(Tokens[i].begin(), 25720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens[i].end(), ':') != Tokens[i].end()) { 25820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar DEBUG({ 25920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "warning: '" << Name << "': " 26020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "ignoring instruction; operand with attribute '" 26120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << Tokens[i] << "', \n"; 26220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 26320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 26420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 26522be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 26620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Tokens[i][0] == '$' && !OperandNames.insert(Tokens[i]).second) { 26720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar DEBUG({ 26820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "warning: '" << Name << "': " 26920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "ignoring instruction; tied operand '" 2702b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar << Tokens[i] << "'\n"; 27120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 27220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 27320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 27420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 27522be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 27620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return true; 27720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 27822be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 27920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarnamespace { 28022be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 281a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// ClassInfo - Helper class for storing the information about a particular 282a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// class of operands which can be matched. 283a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstruct ClassInfo { 284606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar enum ClassInfoKind { 285ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// Invalid kind, for use as a sentinel value. 286ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Invalid = 0, 287ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 288ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// The class for a particular token. 289ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Token, 290ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 291ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// The (first) register class, subsequent register classes are 292ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// RegisterClass0+1, and so on. 293ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterClass0, 294ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 295ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// The (first) user defined class, subsequent user defined classes are 296ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// UserClass0+1, and so on. 297ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar UserClass0 = 1<<16 298606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar }; 299606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 300606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// Kind - The class kind, which is either a predefined kind, or (UserClass0 + 301606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// N) for the Nth user defined class. 302606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar unsigned Kind; 303a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 304ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// SuperClasses - The super classes of this class. Note that for simplicities 305ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// sake user operands only record their immediate super class, while register 306ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// operands include all superclasses. 307ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::vector<ClassInfo*> SuperClasses; 3085fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 3096745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// Name - The full class name, suitable for use in an enum. 310a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string Name; 311a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 3126745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// ClassName - The unadorned generic name for this class (e.g., Token). 3136745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar std::string ClassName; 3146745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 315a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// ValueName - The name of the value this class represents; for a token this 316a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// is the literal token string, for an operand it is the TableGen class (or 317a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// empty if this is a derived class). 318a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string ValueName; 319a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 320a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// PredicateMethod - The name of the operand method to test whether the 321ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// operand matches this class; this is not valid for Token or register kinds. 322a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string PredicateMethod; 323a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 324a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// RenderMethod - The name of the operand method to add this operand to an 325ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// MCInst; this is not valid for Token or register kinds. 326a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string RenderMethod; 327606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 3288409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar /// For register classes, the records for all the registers in this class. 3298409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar std::set<Record*> Registers; 3308409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar 3318409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbarpublic: 332ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// isRegisterClass() - Check if this is a register class. 333ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar bool isRegisterClass() const { 334ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return Kind >= RegisterClass0 && Kind < UserClass0; 335ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 336ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 3375fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar /// isUserClass() - Check if this is a user defined class. 3385fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar bool isUserClass() const { 3395fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar return Kind >= UserClass0; 3405fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar } 3415fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 342ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// isRelatedTo - Check whether this class is "related" to \arg RHS. Classes 343ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// are related if they are in the same class hierarchy. 344ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar bool isRelatedTo(const ClassInfo &RHS) const { 345ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Tokens are only related to tokens. 346ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (Kind == Token || RHS.Kind == Token) 347ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return Kind == Token && RHS.Kind == Token; 348ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 3498409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar // Registers classes are only related to registers classes, and only if 3508409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar // their intersection is non-empty. 3518409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar if (isRegisterClass() || RHS.isRegisterClass()) { 3528409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar if (!isRegisterClass() || !RHS.isRegisterClass()) 3538409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar return false; 3548409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar 3558409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar std::set<Record*> Tmp; 3568409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar std::insert_iterator< std::set<Record*> > II(Tmp, Tmp.begin()); 3578409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar std::set_intersection(Registers.begin(), Registers.end(), 3588409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar RHS.Registers.begin(), RHS.Registers.end(), 3598409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar II); 3608409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar 3618409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar return !Tmp.empty(); 3628409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar } 363ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 364ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Otherwise we have two users operands; they are related if they are in the 365ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // same class hierarchy. 3668409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar // 3678409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar // FIXME: This is an oversimplification, they should only be related if they 3688409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar // intersect, however we don't have that information. 369ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar assert(isUserClass() && RHS.isUserClass() && "Unexpected class!"); 370ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar const ClassInfo *Root = this; 371ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar while (!Root->SuperClasses.empty()) 372ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Root = Root->SuperClasses.front(); 373ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 3748409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar const ClassInfo *RHSRoot = &RHS; 375ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar while (!RHSRoot->SuperClasses.empty()) 376ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RHSRoot = RHSRoot->SuperClasses.front(); 377ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 378ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return Root == RHSRoot; 379ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 380ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 381ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// isSubsetOf - Test whether this class is a subset of \arg RHS; 382ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar bool isSubsetOf(const ClassInfo &RHS) const { 383ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // This is a subset of RHS if it is the same class... 384ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (this == &RHS) 385ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return true; 386ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 387ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // ... or if any of its super classes are a subset of RHS. 388ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::vector<ClassInfo*>::const_iterator it = SuperClasses.begin(), 389ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = SuperClasses.end(); it != ie; ++it) 390ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if ((*it)->isSubsetOf(RHS)) 391ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return true; 392ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 393ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return false; 3945fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar } 3955fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 396606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// operator< - Compare two classes. 397606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar bool operator<(const ClassInfo &RHS) const { 398ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Unrelated classes can be ordered by kind. 399ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!isRelatedTo(RHS)) 400606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return Kind < RHS.Kind; 401606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 402606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar switch (Kind) { 4036745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar case Invalid: 4046745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar assert(0 && "Invalid kind!"); 405606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar case Token: 4065fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar // Tokens are comparable by value. 407606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // 408606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // FIXME: Compare by enum value. 409606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return ValueName < RHS.ValueName; 410606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 411606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar default: 412ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // This class preceeds the RHS if it is a proper subset of the RHS. 413ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return this != &RHS && isSubsetOf(RHS); 414606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 415606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 416a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar}; 417a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 418b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar/// InstructionInfo - Helper class for storing the necessary information for an 419b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar/// instruction which is capable of being matched. 42020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstruct InstructionInfo { 42120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar struct Operand { 422a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The unique class instance this operand should match. 423a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *Class; 424a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 425a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The original operand this corresponds to, if any. 426fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer const CodeGenInstruction::OperandInfo *OperandInfo; 42720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }; 42820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 42920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// InstrName - The target name for this instruction. 43020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string InstrName; 43120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 43220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Instr - The instruction this matches. 43320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction *Instr; 43420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 43520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// AsmString - The assembly string for this instruction (with variants 43620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// removed). 43720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string AsmString; 43820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 43920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Tokens - The tokenized assembly pattern that this instruction matches. 44020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<StringRef, 4> Tokens; 44120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 44220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Operands - The operands that this instruction matches. 44320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<Operand, 4> Operands; 44420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 445b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// ConversionFnKind - The enum value which is passed to the generated 446b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// ConvertToMCInst to convert parsed operands into an MCInst for this 447b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// function. 448b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar std::string ConversionFnKind; 44920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 450606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// operator< - Compare two instructions. 451606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar bool operator<(const InstructionInfo &RHS) const { 452606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (Operands.size() != RHS.Operands.size()) 453606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return Operands.size() < RHS.Operands.size(); 4542b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar 455db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar // Compare lexicographically by operand. The matcher validates that other 456db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar // orderings wouldn't be ambiguous using \see CouldMatchAmiguouslyWith(). 457db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 4582b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class) 4592b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return true; 460db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar if (*RHS.Operands[i].Class < *Operands[i].Class) 461db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar return false; 462db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar } 463db2ddb5dc57319eff249144f1d9a553a3278d2e0Daniel Dunbar 4642b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 4652b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 466606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 4672b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// CouldMatchAmiguouslyWith - Check whether this instruction could 4682b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// ambiguously match the same set of operands as \arg RHS (without being a 4692b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// strictly superior match). 4702b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar bool CouldMatchAmiguouslyWith(const InstructionInfo &RHS) { 4712b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // The number of operands is unambiguous. 4722b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (Operands.size() != RHS.Operands.size()) 4732b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 474606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 4752b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // Tokens and operand kinds are unambiguous (assuming a correct target 4762b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // specific parser). 477606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) 4782b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (Operands[i].Class->Kind != RHS.Operands[i].Class->Kind || 4792b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar Operands[i].Class->Kind == ClassInfo::Token) 4802b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class || 4812b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar *RHS.Operands[i].Class < *Operands[i].Class) 4822b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 4832b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar 4842b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // Otherwise, this operand could commute if all operands are equivalent, or 4852b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // there is a pair of operands that compare less than and a pair that 4862b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // compare greater than. 4872b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar bool HasLT = false, HasGT = false; 4882b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 489606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class) 4902b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar HasLT = true; 4912b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*RHS.Operands[i].Class < *Operands[i].Class) 4922b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar HasGT = true; 4932b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 494606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 4952b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return !(HasLT ^ HasGT); 496606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 497606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 49820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarpublic: 49920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar void dump(); 50020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar}; 50120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 502a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarclass AsmMatcherInfo { 503a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarpublic: 504a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The classes which are needed for matching. 505a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<ClassInfo*> Classes; 506a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 507a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The information on the instruction to match. 508a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<InstructionInfo*> Instructions; 509a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 510ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// Map of Register records to their class information. 511ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::map<Record*, ClassInfo*> RegisterClasses; 512ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 513a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarprivate: 514a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// Map of token to class information which has already been constructed. 515a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::map<std::string, ClassInfo*> TokenClasses; 516a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 517ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// Map of RegisterClass records to their class information. 518ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::map<Record*, ClassInfo*> RegisterClassClasses; 519a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 520338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar /// Map of AsmOperandClass records to their class information. 521338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar std::map<Record*, ClassInfo*> AsmOperandClasses; 5226745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 523a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarprivate: 524a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// getTokenClass - Lookup or create the class for the given token. 525a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *getTokenClass(const StringRef &Token); 526a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 527a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// getOperandClass - Lookup or create the class for the given operand. 528a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *getOperandClass(const StringRef &Token, 529a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar const CodeGenInstruction::OperandInfo &OI); 530a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 531ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// BuildRegisterClasses - Build the ClassInfo* instances for register 532ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// classes. 533ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar void BuildRegisterClasses(CodeGenTarget &Target); 534ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 535ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// BuildOperandClasses - Build the ClassInfo* instances for user defined 536ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar /// operand classes. 537ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar void BuildOperandClasses(CodeGenTarget &Target); 538ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 539a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarpublic: 540a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// BuildInfo - Construct the various tables used during matching. 541a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar void BuildInfo(CodeGenTarget &Target); 542a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar}; 543a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 54420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 54520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 54620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarvoid InstructionInfo::dump() { 54720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << InstrName << " -- " << "flattened:\"" << AsmString << '\"' 54820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << ", tokens:["; 54920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = Tokens.size(); i != e; ++i) { 55020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << Tokens[i]; 55120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (i + 1 != e) 55220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << ", "; 55322be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar } 55420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "]\n"; 555a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 55620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 55720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Operand &Op = Operands[i]; 5586745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar errs() << " op[" << i << "] = " << Op.Class->ClassName << " - "; 559a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (Op.Class->Kind == ClassInfo::Token) { 56020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << '\"' << Tokens[i] << "\"\n"; 56120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 56220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 563a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 564fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer const CodeGenInstruction::OperandInfo &OI = *Op.OperandInfo; 56520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << OI.Name << " " << OI.Rec->getName() 56620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << " (" << OI.MIOperandNo << ", " << OI.MINumOperands << ")\n"; 56720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 56820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 569a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 570a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic std::string getEnumNameForToken(const StringRef &Str) { 571a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string Res; 572a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 573a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (StringRef::iterator it = Str.begin(), ie = Str.end(); it != ie; ++it) { 574a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar switch (*it) { 575a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case '*': Res += "_STAR_"; break; 576a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case '%': Res += "_PCT_"; break; 577a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case ':': Res += "_COLON_"; break; 578a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 579a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar default: 580a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (isalnum(*it)) { 581a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Res += *it; 582a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 583a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Res += "_" + utostr((unsigned) *it) + "_"; 584a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 585a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 586a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 58720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 588a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar return Res; 589a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 590a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 591a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarClassInfo *AsmMatcherInfo::getTokenClass(const StringRef &Token) { 592a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *&Entry = TokenClasses[Token]; 593a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 594a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (!Entry) { 595a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry = new ClassInfo(); 596a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Kind = ClassInfo::Token; 5976745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Entry->ClassName = "Token"; 598a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Name = "MCK_" + getEnumNameForToken(Token); 599a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->ValueName = Token; 600a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->PredicateMethod = "<invalid>"; 601a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->RenderMethod = "<invalid>"; 602a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Classes.push_back(Entry); 603a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 604a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 605a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar return Entry; 606a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 607a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 608a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarClassInfo * 609a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarAsmMatcherInfo::getOperandClass(const StringRef &Token, 610a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar const CodeGenInstruction::OperandInfo &OI) { 611ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (OI.Rec->isSubClassOf("RegisterClass")) { 612ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ClassInfo *CI = RegisterClassClasses[OI.Rec]; 613ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 614ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!CI) { 615ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar PrintError(OI.Rec->getLoc(), "register class has no class info!"); 616ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar throw std::string("ERROR: Missing register class!"); 617ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 618ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 619ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar return CI; 620ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 621338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar 622338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar assert(OI.Rec->isSubClassOf("Operand") && "Unexpected operand!"); 623338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar Record *MatchClass = OI.Rec->getValueAsDef("ParserMatchClass"); 624338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar ClassInfo *CI = AsmOperandClasses[MatchClass]; 6255fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 626338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar if (!CI) { 627338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar PrintError(OI.Rec->getLoc(), "operand has no match class!"); 628338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar throw std::string("ERROR: Missing match class!"); 629a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 630a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 631338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar return CI; 632338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar} 633338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar 634ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbarvoid AsmMatcherInfo::BuildRegisterClasses(CodeGenTarget &Target) { 635ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::vector<CodeGenRegisterClass> RegisterClasses; 636ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::vector<CodeGenRegister> Registers; 637338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar 638ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterClasses = Target.getRegisterClasses(); 639ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Registers = Target.getRegisters(); 640338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar 641ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // The register sets used for matching. 642ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::set< std::set<Record*> > RegisterSets; 643ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 644ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Gather the defined sets. 645ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::vector<CodeGenRegisterClass>::iterator it = RegisterClasses.begin(), 646ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterClasses.end(); it != ie; ++it) 647ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterSets.insert(std::set<Record*>(it->Elements.begin(), 648ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar it->Elements.end())); 649ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 650ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Introduce derived sets where necessary (when a register does not determine 651ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // a unique register set class), and build the mapping of registers to the set 652ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // they should classify to. 653ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::map<Record*, std::set<Record*> > RegisterMap; 654ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::vector<CodeGenRegister>::iterator it = Registers.begin(), 655ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = Registers.end(); it != ie; ++it) { 656ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CodeGenRegister &CGR = *it; 657ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Compute the intersection of all sets containing this register. 658ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::set<Record*> ContainingSet; 659ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 660ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::set< std::set<Record*> >::iterator it = RegisterSets.begin(), 661ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterSets.end(); it != ie; ++it) { 662ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!it->count(CGR.TheDef)) 663ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar continue; 664ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 665ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (ContainingSet.empty()) { 666ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ContainingSet = *it; 667ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } else { 668ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::set<Record*> Tmp; 669ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::swap(Tmp, ContainingSet); 670ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::insert_iterator< std::set<Record*> > II(ContainingSet, 671ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ContainingSet.begin()); 672ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::set_intersection(Tmp.begin(), Tmp.end(), it->begin(), it->end(), 673ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar II); 674ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 675ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 676ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 677ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!ContainingSet.empty()) { 678ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterSets.insert(ContainingSet); 679ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterMap.insert(std::make_pair(CGR.TheDef, ContainingSet)); 680ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 681ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 682ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 683ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Construct the register classes. 684ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::map<std::set<Record*>, ClassInfo*> RegisterSetClasses; 685ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar unsigned Index = 0; 686ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::set< std::set<Record*> >::iterator it = RegisterSets.begin(), 687ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterSets.end(); it != ie; ++it, ++Index) { 688ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ClassInfo *CI = new ClassInfo(); 689ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->Kind = ClassInfo::RegisterClass0 + Index; 690ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->ClassName = "Reg" + utostr(Index); 691ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->Name = "MCK_Reg" + utostr(Index); 692ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->ValueName = ""; 693ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->PredicateMethod = ""; // unused 694ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->RenderMethod = "addRegOperands"; 6958409bfbbc306bc051fbd8b049804103ca7df2f63Daniel Dunbar CI->Registers = *it; 696ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Classes.push_back(CI); 697ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterSetClasses.insert(std::make_pair(*it, CI)); 698ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 699ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 700ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Find the superclasses; we could compute only the subgroup lattice edges, 701ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // but there isn't really a point. 702ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::set< std::set<Record*> >::iterator it = RegisterSets.begin(), 703ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterSets.end(); it != ie; ++it) { 704ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ClassInfo *CI = RegisterSetClasses[*it]; 705ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::set< std::set<Record*> >::iterator it2 = RegisterSets.begin(), 706ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie2 = RegisterSets.end(); it2 != ie2; ++it2) 707ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (*it != *it2 && 708ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar std::includes(it2->begin(), it2->end(), it->begin(), it->end())) 709ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->SuperClasses.push_back(RegisterSetClasses[*it2]); 710ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 711ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 712ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Name the register classes which correspond to a user defined RegisterClass. 713ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::vector<CodeGenRegisterClass>::iterator it = RegisterClasses.begin(), 714ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterClasses.end(); it != ie; ++it) { 715ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ClassInfo *CI = RegisterSetClasses[std::set<Record*>(it->Elements.begin(), 716ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar it->Elements.end())]; 717ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (CI->ValueName.empty()) { 718ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->ClassName = it->getName(); 719ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->Name = "MCK_" + it->getName(); 720ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->ValueName = it->getName(); 721ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } else 722ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->ValueName = CI->ValueName + "," + it->getName(); 723ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 724ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar RegisterClassClasses.insert(std::make_pair(it->TheDef, CI)); 725ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 726ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 727ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Populate the map for individual registers. 728ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::map<Record*, std::set<Record*> >::iterator it = RegisterMap.begin(), 729ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = RegisterMap.end(); it != ie; ++it) 730ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar this->RegisterClasses[it->first] = RegisterSetClasses[it->second]; 731ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar} 732ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 733ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbarvoid AsmMatcherInfo::BuildOperandClasses(CodeGenTarget &Target) { 734338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar std::vector<Record*> AsmOperands; 735338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar AsmOperands = Records.getAllDerivedDefinitions("AsmOperandClass"); 736338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar unsigned Index = 0; 737338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar for (std::vector<Record*>::iterator it = AsmOperands.begin(), 738338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar ie = AsmOperands.end(); it != ie; ++it, ++Index) { 739338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar ClassInfo *CI = new ClassInfo(); 740338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar CI->Kind = ClassInfo::UserClass0 + Index; 741338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar 742338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar Init *Super = (*it)->getValueInit("SuperClass"); 743338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar if (DefInit *DI = dynamic_cast<DefInit*>(Super)) { 744ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ClassInfo *SC = AsmOperandClasses[DI->getDef()]; 745ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!SC) 746338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar PrintError((*it)->getLoc(), "Invalid super class reference!"); 747ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar else 748ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar CI->SuperClasses.push_back(SC); 749a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 750338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar assert(dynamic_cast<UnsetInit*>(Super) && "Unexpected SuperClass field!"); 751a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 752338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar CI->ClassName = (*it)->getValueAsString("Name"); 753338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar CI->Name = "MCK_" + CI->ClassName; 754338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar CI->ValueName = (*it)->getName(); 7555c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar 7565c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar // Get or construct the predicate method name. 7575c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar Init *PMName = (*it)->getValueInit("PredicateMethod"); 7585c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar if (StringInit *SI = dynamic_cast<StringInit*>(PMName)) { 7595c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar CI->PredicateMethod = SI->getValue(); 7605c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar } else { 7615c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar assert(dynamic_cast<UnsetInit*>(PMName) && 7625c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar "Unexpected PredicateMethod field!"); 7635c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar CI->PredicateMethod = "is" + CI->ClassName; 7645c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar } 7655c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar 7665c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar // Get or construct the render method name. 7675c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar Init *RMName = (*it)->getValueInit("RenderMethod"); 7685c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar if (StringInit *SI = dynamic_cast<StringInit*>(RMName)) { 7695c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar CI->RenderMethod = SI->getValue(); 7705c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar } else { 7715c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar assert(dynamic_cast<UnsetInit*>(RMName) && 7725c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar "Unexpected RenderMethod field!"); 7735c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar CI->RenderMethod = "add" + CI->ClassName + "Operands"; 7745c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar } 7755c468e3d7006e854fd41b29d5539a7adcee53904Daniel Dunbar 776338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar AsmOperandClasses[*it] = CI; 777338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar Classes.push_back(CI); 778a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 779ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar} 780ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 781ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbarvoid AsmMatcherInfo::BuildInfo(CodeGenTarget &Target) { 782ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Build info for the register classes. 783ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar BuildRegisterClasses(Target); 784ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 785ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Build info for the user defined assembly operand classes. 786ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar BuildOperandClasses(Target); 787a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 788338825c1928b956b2cbcc2c165a60afddd100398Daniel Dunbar // Build the instruction information. 789a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (std::map<std::string, CodeGenInstruction>::const_iterator 790a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it = Target.getInstructions().begin(), 791a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ie = Target.getInstructions().end(); 792a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) { 793a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar const CodeGenInstruction &CGI = it->second; 794a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 795606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (!StringRef(it->first).startswith(MatchPrefix)) 79653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar continue; 79753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 79820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OwningPtr<InstructionInfo> II(new InstructionInfo); 79920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 80020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->InstrName = it->first; 80120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Instr = &it->second; 80220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->AsmString = FlattenVariants(CGI.AsmString, 0); 80320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 80420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar TokenizeAsmString(II->AsmString, II->Tokens); 805a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 80620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions which shouldn't be matched. 80720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!IsAssemblerInstruction(it->first, CGI, II->Tokens)) 808a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar continue; 809a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 81020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II->Tokens.size(); i != e; ++i) { 81120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef Token = II->Tokens[i]; 81220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 81320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Check for simple tokens. 81420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Token[0] != '$') { 81520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand Op; 816a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Op.Class = getTokenClass(Token); 817fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Op.OperandInfo = 0; 81820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Operands.push_back(Op); 81920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 82020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 821a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 82220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Otherwise this is an operand reference. 82320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef OperandName; 82420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Token[1] == '{') 82520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OperandName = Token.substr(2, Token.size() - 3); 82620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar else 82720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OperandName = Token.substr(1); 82820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 82920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Map this token to an operand. FIXME: Move elsewhere. 83020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar unsigned Idx; 83120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar try { 83220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Idx = CGI.getOperandNamed(OperandName); 83320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } catch(...) { 83420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "error: unable to find operand: '" << OperandName << "'!\n"; 83520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 83620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 837a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 83820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction::OperandInfo &OI = CGI.OperandList[Idx]; 839a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar InstructionInfo::Operand Op; 840a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Op.Class = getOperandClass(Token, OI); 841fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Op.OperandInfo = &OI; 84220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Operands.push_back(Op); 84353a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } 84453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 84520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If we broke out, ignore the instruction. 84620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (II->Operands.size() != II->Tokens.size()) 84753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar continue; 848a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 849a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Instructions.push_back(II.take()); 85020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 8515fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 8525fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar // Reorder classes so that classes preceed super classes. 8535fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar std::sort(Classes.begin(), Classes.end(), less_ptr<ClassInfo>()); 85420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 855a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 856606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbarstatic void EmitConvertToMCInst(CodeGenTarget &Target, 857606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar std::vector<InstructionInfo*> &Infos, 858606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar raw_ostream &OS) { 859b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Write the convert function to a separate stream, so we can drop it after 860b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // the enum. 861b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar std::string ConvertFnBody; 862b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar raw_string_ostream CvtOS(ConvertFnBody); 863b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 86420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Function we have already generated. 86520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::set<std::string> GeneratedFns; 86620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 867b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Start the unified conversion function. 868b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 869b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << "static bool ConvertToMCInst(ConversionKind Kind, MCInst &Inst, " 870b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << "unsigned Opcode,\n" 871b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << " SmallVectorImpl<" 872b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << Target.getName() << "Operand> &Operands) {\n"; 873b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.setOpcode(Opcode);\n"; 874b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " switch (Kind) {\n"; 875b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " default:\n"; 876b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 877b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Start the enum, which we will generate inline. 878b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 879b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "// Unified function for converting operants to MCInst instances.\n\n"; 880b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "enum ConversionKind {\n"; 881b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 88220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = Infos.begin(), 88320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 88420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo &II = **it; 88520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 88620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Order the (class) operands by the order to convert them into an MCInst. 88720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<std::pair<unsigned, unsigned>, 4> MIOperandList; 88820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Operands.size(); i != e; ++i) { 88920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[i]; 890fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer if (Op.OperandInfo) 891fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer MIOperandList.push_back(std::make_pair(Op.OperandInfo->MIOperandNo, i)); 89220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 89320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::sort(MIOperandList.begin(), MIOperandList.end()); 894a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 89520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Compute the total number of operands. 896a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned NumMIOperands = 0; 89720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Instr->OperandList.size(); i != e; ++i) { 89820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction::OperandInfo &OI = II.Instr->OperandList[i]; 899a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar NumMIOperands = std::max(NumMIOperands, 900a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OI.MIOperandNo + OI.MINumOperands); 901a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 902a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 90320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Build the conversion function signature. 90420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string Signature = "Convert"; 90520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar unsigned CurIndex = 0; 90620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = MIOperandList.size(); i != e; ++i) { 90720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[MIOperandList[i].second]; 908fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer assert(CurIndex <= Op.OperandInfo->MIOperandNo && 90920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar "Duplicate match for instruction operand!"); 91020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 911b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar Signature += "_"; 912b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 91320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Skip operands which weren't matched by anything, this occurs when the 91420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // .td file encodes "implicit" operands as explicit ones. 91520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 91620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This should be removed from the MCInst structure. 917fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer for (; CurIndex != Op.OperandInfo->MIOperandNo; ++CurIndex) 91820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Signature += "Imp"; 919a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 920ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Registers are always converted the same, don't duplicate the conversion 921ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // function based on them. 922ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // 923ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // FIXME: We could generalize this based on the render method, if it 924ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // mattered. 925ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (Op.Class->isRegisterClass()) 926ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Signature += "Reg"; 927ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar else 928ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar Signature += Op.Class->ClassName; 929fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Signature += utostr(Op.OperandInfo->MINumOperands); 930b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar Signature += "_" + utostr(MIOperandList[i].second); 931b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 932fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer CurIndex += Op.OperandInfo->MINumOperands; 93320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 934a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 93520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Add any trailing implicit operands. 93620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (; CurIndex != NumMIOperands; ++CurIndex) 93720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Signature += "Imp"; 938a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 939b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar II.ConversionFnKind = Signature; 940a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 941b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Check if we have already generated this signature. 94220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!GeneratedFns.insert(Signature).second) 94320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 944a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 94520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If not, emit it now. 946b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 947b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Add to the enum list. 948b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << " " << Signature << ",\n"; 949b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 950b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // And to the convert function. 951b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " case " << Signature << ":\n"; 95220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar CurIndex = 0; 95320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = MIOperandList.size(); i != e; ++i) { 95420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[MIOperandList[i].second]; 95520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 95620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Add the implicit operands. 957fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer for (; CurIndex != Op.OperandInfo->MIOperandNo; ++CurIndex) 958b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.addOperand(MCOperand::CreateReg(0));\n"; 95920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 960b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Operands[" << MIOperandList[i].second 961a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "]." << Op.Class->RenderMethod 962fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer << "(Inst, " << Op.OperandInfo->MINumOperands << ");\n"; 963fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer CurIndex += Op.OperandInfo->MINumOperands; 964a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 96520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 96620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // And add trailing implicit operands. 96720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (; CurIndex != NumMIOperands; ++CurIndex) 968b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.addOperand(MCOperand::CreateReg(0));\n"; 969b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " break;\n"; 970a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 971b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 972b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Finish the convert function. 973b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 974b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " }\n"; 975b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " return false;\n"; 976b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << "}\n\n"; 977b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 978b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Finish the enum, and drop the convert function after it. 979b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 980b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << " NumConversionVariants\n"; 981b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "};\n\n"; 982b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 983b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << CvtOS.str(); 98420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 98520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 986a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// EmitMatchClassEnumeration - Emit the enumeration for match class kinds. 987a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic void EmitMatchClassEnumeration(CodeGenTarget &Target, 988a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<ClassInfo*> &Infos, 989a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar raw_ostream &OS) { 990a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "namespace {\n\n"; 991a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 992a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "/// MatchClassKind - The kinds of classes which participate in\n" 993a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "/// instruction matching.\n"; 994a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "enum MatchClassKind {\n"; 995a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " InvalidMatchClass = 0,\n"; 996a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 997a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ie = Infos.end(); it != ie; ++it) { 998a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo &CI = **it; 999a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " " << CI.Name << ", // "; 1000a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (CI.Kind == ClassInfo::Token) { 1001a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "'" << CI.ValueName << "'\n"; 1002ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } else if (CI.isRegisterClass()) { 1003a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (!CI.ValueName.empty()) 1004a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "register class '" << CI.ValueName << "'\n"; 1005a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar else 1006a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "derived register class\n"; 1007a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 1008a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "user defined class '" << CI.ValueName << "'\n"; 1009a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1010a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1011a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " NumMatchClassKinds\n"; 1012a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "};\n\n"; 1013a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1014a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "}\n\n"; 1015a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 1016a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1017a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// EmitClassifyOperand - Emit the function to classify an operand. 1018a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic void EmitClassifyOperand(CodeGenTarget &Target, 1019ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar AsmMatcherInfo &Info, 1020a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar raw_ostream &OS) { 1021a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "static MatchClassKind ClassifyOperand(" 1022a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << Target.getName() << "Operand &Operand) {\n"; 1023ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 1024ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Classify tokens. 1025a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Operand.isToken())\n"; 1026a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return MatchTokenString(Operand.getToken());\n\n"; 1027ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 1028ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Classify registers. 1029ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // 1030ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // FIXME: Don't hardcode isReg, getReg. 1031ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " if (Operand.isReg()) {\n"; 1032ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " switch (Operand.getReg()) {\n"; 1033ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " default: return InvalidMatchClass;\n"; 1034ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::map<Record*, ClassInfo*>::iterator 1035ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar it = Info.RegisterClasses.begin(), ie = Info.RegisterClasses.end(); 1036ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar it != ie; ++it) 1037ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " case " << Target.getName() << "::" 1038ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar << it->first->getName() << ": return " << it->second->Name << ";\n"; 1039ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " }\n"; 1040ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " }\n\n"; 1041ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 1042ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Classify user defined operands. 1043ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (std::vector<ClassInfo*>::iterator it = Info.Classes.begin(), 1044ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar ie = Info.Classes.end(); it != ie; ++it) { 1045a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo &CI = **it; 1046a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1047ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!CI.isUserClass()) 1048ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar continue; 1049ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 1050ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " // '" << CI.ClassName << "' class"; 1051ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!CI.SuperClasses.empty()) { 1052ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << ", subclass of "; 1053ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (unsigned i = 0, e = CI.SuperClasses.size(); i != e; ++i) { 1054ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (i) OS << ", "; 1055ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << "'" << CI.SuperClasses[i]->ClassName << "'"; 1056ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar assert(CI < *CI.SuperClasses[i] && "Invalid class relation!"); 10575fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar } 1058ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar } 1059ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << "\n"; 10605fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 1061ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " if (Operand." << CI.PredicateMethod << "()) {\n"; 10625fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar 1063ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar // Validate subclass relationships. 1064ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (!CI.SuperClasses.empty()) { 1065ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar for (unsigned i = 0, e = CI.SuperClasses.size(); i != e; ++i) 1066ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " assert(Operand." << CI.SuperClasses[i]->PredicateMethod 10675fe6338ac859707f797bf6db6d043bb5f4d944a1Daniel Dunbar << "() && \"Invalid class relationship!\");\n"; 1068a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1069ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar 1070ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " return " << CI.Name << ";\n"; 1071ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " }\n\n"; 1072a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1073a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return InvalidMatchClass;\n"; 1074a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "}\n\n"; 1075a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 1076a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1077fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar/// EmitIsSubclass - Emit the subclass predicate function. 1078fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbarstatic void EmitIsSubclass(CodeGenTarget &Target, 1079fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar std::vector<ClassInfo*> &Infos, 1080fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar raw_ostream &OS) { 1081fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << "/// IsSubclass - Compute whether \\arg A is a subclass of \\arg B.\n"; 1082fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << "static bool IsSubclass(MatchClassKind A, MatchClassKind B) {\n"; 1083fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " if (A == B)\n"; 1084fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " return true;\n\n"; 1085fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1086fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " switch (A) {\n"; 1087fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " default:\n"; 1088fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " return false;\n"; 1089fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 1090fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 1091fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar ClassInfo &A = **it; 1092fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1093fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar if (A.Kind != ClassInfo::Token) { 1094fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar std::vector<StringRef> SuperClasses; 1095fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 1096fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 1097fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar ClassInfo &B = **it; 1098fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1099ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar if (&A != &B && A.isSubsetOf(B)) 1100fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar SuperClasses.push_back(B.Name); 1101fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar } 1102fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1103fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar if (SuperClasses.empty()) 1104fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar continue; 1105fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1106fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << "\n case " << A.Name << ":\n"; 1107fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1108fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar if (SuperClasses.size() == 1) { 1109ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " return B == " << SuperClasses.back() << ";\n"; 1110fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar continue; 1111fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar } 1112fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1113ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " switch (B) {\n"; 1114ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " default: return false;\n"; 1115fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar for (unsigned i = 0, e = SuperClasses.size(); i != e; ++i) 1116ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " case " << SuperClasses[i] << ": return true;\n"; 1117ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar OS << " }\n"; 1118fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar } 1119fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar } 1120fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " }\n"; 1121fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << "}\n\n"; 1122fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar} 1123fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 112470add884e4967f511e2cbb35c61534186b9b418aChris Lattnertypedef std::pair<std::string, std::string> StringPair; 112570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 112670add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// FindFirstNonCommonLetter - Find the first character in the keys of the 112770add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// string pairs that is not shared across the whole set of strings. All 112870add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// strings are assumed to have the same length. 112970add884e4967f511e2cbb35c61534186b9b418aChris Lattnerstatic unsigned 113070add884e4967f511e2cbb35c61534186b9b418aChris LattnerFindFirstNonCommonLetter(const std::vector<const StringPair*> &Matches) { 113170add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(!Matches.empty()); 113270add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches[0]->first.size(); i != e; ++i) { 113370add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Check to see if letter i is the same across the set. 113470add884e4967f511e2cbb35c61534186b9b418aChris Lattner char Letter = Matches[0]->first[i]; 113570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 113670add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned str = 0, e = Matches.size(); str != e; ++str) 113770add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (Matches[str]->first[i] != Letter) 113870add884e4967f511e2cbb35c61534186b9b418aChris Lattner return i; 113970add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 114070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 114170add884e4967f511e2cbb35c61534186b9b418aChris Lattner return Matches[0]->first.size(); 114270add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 114370add884e4967f511e2cbb35c61534186b9b418aChris Lattner 114470add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// EmitStringMatcherForChar - Given a set of strings that are known to be the 114570add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// same length and whose characters leading up to CharNo are the same, emit 114670add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// code to verify that CharNo and later are the same. 114772ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 114872ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// \return - True if control can leave the emitted code fragment. 114972ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbarstatic bool EmitStringMatcherForChar(const std::string &StrVariableName, 115070add884e4967f511e2cbb35c61534186b9b418aChris Lattner const std::vector<const StringPair*> &Matches, 115170add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned CharNo, unsigned IndentCount, 115270add884e4967f511e2cbb35c61534186b9b418aChris Lattner raw_ostream &OS) { 115370add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(!Matches.empty() && "Must have at least one string to match!"); 115470add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::string Indent(IndentCount*2+4, ' '); 115570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 115670add884e4967f511e2cbb35c61534186b9b418aChris Lattner // If we have verified that the entire string matches, we're done: output the 115770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // matching code. 115870add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (CharNo == Matches[0]->first.size()) { 115970add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(Matches.size() == 1 && "Had duplicate keys to match on"); 116070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 116170add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: If Matches[0].first has embeded \n, this will be bad. 116270add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << Matches[0]->second << "\t // \"" << Matches[0]->first 116370add884e4967f511e2cbb35c61534186b9b418aChris Lattner << "\"\n"; 116472ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return false; 116570add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 116670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 116770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Bucket the matches by the character we are comparing. 116870add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::map<char, std::vector<const StringPair*> > MatchesByLetter; 116970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 117070add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches.size(); i != e; ++i) 117170add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLetter[Matches[i]->first[CharNo]].push_back(Matches[i]); 117270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 117370add884e4967f511e2cbb35c61534186b9b418aChris Lattner 117470add884e4967f511e2cbb35c61534186b9b418aChris Lattner // If we have exactly one bucket to match, see how many characters are common 117570add884e4967f511e2cbb35c61534186b9b418aChris Lattner // across the whole set and match all of them at once. 117670add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (MatchesByLetter.size() == 1) { 117770add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned FirstNonCommonLetter = FindFirstNonCommonLetter(Matches); 117870add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned NumChars = FirstNonCommonLetter-CharNo; 117970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 118072ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Emit code to break out if the prefix doesn't match. 118170add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (NumChars == 1) { 118272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Do the comparison with if (Str[1] != 'f') 118370add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: Need to escape general characters. 118472ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << "if (" << StrVariableName << "[" << CharNo << "] != '" 118572ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar << Matches[0]->first[CharNo] << "')\n"; 118672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << " break;\n"; 118770add884e4967f511e2cbb35c61534186b9b418aChris Lattner } else { 118872ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Do the comparison with if (Str.substr(1,3) != "foo"). 118970add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: Need to escape general strings. 119072ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << "if (" << StrVariableName << ".substr(" << CharNo << "," 119172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar << NumChars << ") != \""; 119272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Matches[0]->first.substr(CharNo, NumChars) << "\")\n"; 1193af3e9d43a2d8ba3cf5f65f54bd928846bec3ab67Daniel Dunbar OS << Indent << " break;\n"; 119470add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 119570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 119672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return EmitStringMatcherForChar(StrVariableName, Matches, 119772ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar FirstNonCommonLetter, IndentCount, OS); 119870add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 119970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 120070add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Otherwise, we have multiple possible things, emit a switch on the 120170add884e4967f511e2cbb35c61534186b9b418aChris Lattner // character. 120270add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "switch (" << StrVariableName << "[" << CharNo << "]) {\n"; 120370add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "default: break;\n"; 120470add884e4967f511e2cbb35c61534186b9b418aChris Lattner 120570add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (std::map<char, std::vector<const StringPair*> >::iterator LI = 120670add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLetter.begin(), E = MatchesByLetter.end(); LI != E; ++LI) { 120770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // TODO: escape hard stuff (like \n) if we ever care about it. 120870add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "case '" << LI->first << "':\t // " 120970add884e4967f511e2cbb35c61534186b9b418aChris Lattner << LI->second.size() << " strings to match.\n"; 121072ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar if (EmitStringMatcherForChar(StrVariableName, LI->second, CharNo+1, 121172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar IndentCount+1, OS)) 121272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << " break;\n"; 121370add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 121470add884e4967f511e2cbb35c61534186b9b418aChris Lattner 121570add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "}\n"; 121672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return true; 121770add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 121870add884e4967f511e2cbb35c61534186b9b418aChris Lattner 121970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 122070add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// EmitStringMatcher - Given a list of strings and code to execute when they 122172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// match, output a simple switch tree to classify the input string. 122272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 122372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// If a match is found, the code in Vals[i].second is executed; control must 122472ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// not exit this code fragment. If nothing matches, execution falls through. 122572ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 122672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// \param StrVariableName - The name of the variable to test. 122770add884e4967f511e2cbb35c61534186b9b418aChris Lattnerstatic void EmitStringMatcher(const std::string &StrVariableName, 122870add884e4967f511e2cbb35c61534186b9b418aChris Lattner const std::vector<StringPair> &Matches, 122970add884e4967f511e2cbb35c61534186b9b418aChris Lattner raw_ostream &OS) { 123070add884e4967f511e2cbb35c61534186b9b418aChris Lattner // First level categorization: group strings by length. 123170add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::map<unsigned, std::vector<const StringPair*> > MatchesByLength; 123270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 123370add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches.size(); i != e; ++i) 123470add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLength[Matches[i].first.size()].push_back(&Matches[i]); 123570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 123670add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Output a switch statement on length and categorize the elements within each 123770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // bin. 123870add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " switch (" << StrVariableName << ".size()) {\n"; 123970add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " default: break;\n"; 124070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 124170add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (std::map<unsigned, std::vector<const StringPair*> >::iterator LI = 124270add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLength.begin(), E = MatchesByLength.end(); LI != E; ++LI) { 124370add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " case " << LI->first << ":\t // " << LI->second.size() 124470add884e4967f511e2cbb35c61534186b9b418aChris Lattner << " strings to match.\n"; 124572ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar if (EmitStringMatcherForChar(StrVariableName, LI->second, 0, 0, OS)) 124672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << " break;\n"; 124770add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 124870add884e4967f511e2cbb35c61534186b9b418aChris Lattner 124970add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " }\n"; 125070add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 125170add884e4967f511e2cbb35c61534186b9b418aChris Lattner 125270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 1253245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar/// EmitMatchTokenString - Emit the function to match a token string to the 1254245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar/// appropriate match class value. 1255245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbarstatic void EmitMatchTokenString(CodeGenTarget &Target, 1256245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar std::vector<ClassInfo*> &Infos, 1257245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar raw_ostream &OS) { 1258245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar // Construct the match list. 1259245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar std::vector<StringPair> Matches; 1260245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 1261245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 1262245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar ClassInfo &CI = **it; 1263245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 1264245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar if (CI.Kind == ClassInfo::Token) 1265245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar Matches.push_back(StringPair(CI.ValueName, "return " + CI.Name + ";")); 1266245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar } 1267245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 1268245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "static MatchClassKind MatchTokenString(const StringRef &Name) {\n"; 1269245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 1270245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar EmitStringMatcher("Name", Matches, OS); 1271245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 1272245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << " return InvalidMatchClass;\n"; 1273245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "}\n\n"; 1274245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar} 127570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 12762234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar/// EmitMatchRegisterName - Emit the function to match a string to the target 12772234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar/// specific register enum. 12782234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbarstatic void EmitMatchRegisterName(CodeGenTarget &Target, Record *AsmParser, 12792234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar raw_ostream &OS) { 1280245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar // Construct the match list. 128170add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::vector<StringPair> Matches; 1282245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar for (unsigned i = 0, e = Target.getRegisters().size(); i != e; ++i) { 1283245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar const CodeGenRegister &Reg = Target.getRegisters()[i]; 128420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Reg.TheDef->getValueAsString("AsmName").empty()) 128520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 128620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 128770add884e4967f511e2cbb35c61534186b9b418aChris Lattner Matches.push_back(StringPair(Reg.TheDef->getValueAsString("AsmName"), 1288245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar "return " + utostr(i + 1) + ";")); 128920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 129070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 1291245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "unsigned " << Target.getName() 1292245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar << AsmParser->getValueAsString("AsmParserClassName") 1293245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar << "::MatchRegisterName(const StringRef &Name) {\n"; 1294245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 129570add884e4967f511e2cbb35c61534186b9b418aChris Lattner EmitStringMatcher("Name", Matches, OS); 129670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 1297245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << " return 0;\n"; 129820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OS << "}\n\n"; 12992234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar} 13002234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 13012234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbarvoid AsmMatcherEmitter::run(raw_ostream &OS) { 13022234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar CodeGenTarget Target; 13032234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar Record *AsmParser = Target.getAsmParser(); 13042234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar std::string ClassName = AsmParser->getValueAsString("AsmParserClassName"); 13052234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 13062234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar EmitSourceFileHeader("Assembly Matcher Source Fragment", OS); 13072234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 13082234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar // Emit the function to match a register name to number. 13092234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar EmitMatchRegisterName(Target, AsmParser, OS); 131020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1311a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Compute the information on the instructions to match. 1312a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar AsmMatcherInfo Info; 1313a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.BuildInfo(Target); 131420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1315606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Sort the instruction table using the partial order on classes. 1316606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar std::sort(Info.Instructions.begin(), Info.Instructions.end(), 1317606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar less_ptr<InstructionInfo>()); 1318606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 1319b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar DEBUG_WITH_TYPE("instruction_info", { 1320a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::iterator 1321a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it = Info.Instructions.begin(), ie = Info.Instructions.end(); 1322a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) 132320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar (*it)->dump(); 132420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 132520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1326606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Check for ambiguous instructions. 1327606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar unsigned NumAmbiguous = 0; 13282b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned i = 0, e = Info.Instructions.size(); i != e; ++i) { 13292b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned j = i + 1; j != e; ++j) { 13302b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar InstructionInfo &A = *Info.Instructions[i]; 13312b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar InstructionInfo &B = *Info.Instructions[j]; 1332606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 13332b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (A.CouldMatchAmiguouslyWith(B)) { 13342b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar DEBUG_WITH_TYPE("ambiguous_instrs", { 13352b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "warning: ambiguous instruction match:\n"; 13362b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar A.dump(); 13372b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "\nis incomparable with:\n"; 13382b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar B.dump(); 13392b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "\n\n"; 13402b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar }); 13412b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar ++NumAmbiguous; 13422b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 1343606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 1344606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 1345606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (NumAmbiguous) 1346606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar DEBUG_WITH_TYPE("ambiguous_instrs", { 1347606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar errs() << "warning: " << NumAmbiguous 1348606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar << " ambiguous instructions!\n"; 1349606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar }); 1350606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 1351606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Generate the unified function to convert operands into an MCInst. 1352606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar EmitConvertToMCInst(Target, Info.Instructions, OS); 1353a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1354a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the enumeration for classes which participate in matching. 1355a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar EmitMatchClassEnumeration(Target, Info.Classes, OS); 135620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1357a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the routine to match token strings to their match class. 1358a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar EmitMatchTokenString(Target, Info.Classes, OS); 135920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1360a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the routine to classify an operand. 1361ea6408f8cd17b065e414611e01a7133d118429e9Daniel Dunbar EmitClassifyOperand(Target, Info, OS); 1362a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1363fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar // Emit the subclass predicate routine. 1364fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar EmitIsSubclass(Target, Info.Classes, OS); 1365fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar 1366a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Finally, build the match function. 1367a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1368a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar size_t MaxNumOperands = 0; 1369a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = 1370a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.Instructions.begin(), ie = Info.Instructions.end(); 1371a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) 1372a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar MaxNumOperands = std::max(MaxNumOperands, (*it)->Operands.size()); 1373a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 137420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OS << "bool " << Target.getName() << ClassName 137520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "::MatchInstruction(" 1376a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar << "SmallVectorImpl<" << Target.getName() << "Operand> &Operands, " 1377a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar << "MCInst &Inst) {\n"; 137820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1379a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the static match table; unused classes get initalized to 0 which is 1380a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // guaranteed to be InvalidMatchClass. 1381a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // 1382a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // FIXME: We can reduce the size of this table very easily. First, we change 1383a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // it so that store the kinds in separate bit-fields for each index, which 1384a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // only needs to be the max width used for classes at that index (we also need 1385a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // to reject based on this during classification). If we then make sure to 1386a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // order the match kinds appropriately (putting mnemonics last), then we 1387a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // should only end up using a few bits for each class, especially the ones 1388a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // following the mnemonic. 1389c6049534605af5f13d1b5149488b0a9efd294582Chris Lattner OS << " static const struct MatchEntry {\n"; 1390a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " unsigned Opcode;\n"; 1391a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " ConversionKind ConvertFn;\n"; 1392a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n"; 1393a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " } MatchTable[" << Info.Instructions.size() << "] = {\n"; 1394a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1395a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = 1396a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.Instructions.begin(), ie = Info.Instructions.end(); 1397a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) { 139820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo &II = **it; 139920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1400a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " { " << Target.getName() << "::" << II.InstrName 1401a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << ", " << II.ConversionFnKind << ", { "; 140220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Operands.size(); i != e; ++i) { 140320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[i]; 140420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1405a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (i) OS << ", "; 1406a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << Op.Class->Name; 140720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 1408a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " } },\n"; 1409a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1410a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1411a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " };\n\n"; 1412a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1413a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit code to compute the class list for this operand vector. 1414a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Eliminate obvious mismatches.\n"; 1415a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Operands.size() > " << MaxNumOperands << ")\n"; 1416a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return true;\n\n"; 1417a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1418a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Compute the class list for this operand vector.\n"; 1419a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n"; 1420a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " for (unsigned i = 0, e = Operands.size(); i != e; ++i) {\n"; 1421a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " Classes[i] = ClassifyOperand(Operands[i]);\n\n"; 1422a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1423a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Check for invalid operands before matching.\n"; 1424a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Classes[i] == InvalidMatchClass)\n"; 1425a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return true;\n"; 1426a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " }\n\n"; 1427a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1428a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Mark unused classes.\n"; 1429a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " for (unsigned i = Operands.size(), e = " << MaxNumOperands << "; " 1430a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "i != e; ++i)\n"; 1431a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " Classes[i] = InvalidMatchClass;\n\n"; 1432a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1433a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit code to search the table. 1434a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Search the table.\n"; 1435d39bd3aa5c795e55c0e2c4a5c72dab58ce1a1576Chris Lattner OS << " for (const MatchEntry *it = MatchTable, " 1436a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "*ie = MatchTable + " << Info.Instructions.size() 1437a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "; it != ie; ++it) {\n"; 1438a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (unsigned i = 0; i != MaxNumOperands; ++i) { 1439fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar OS << " if (!IsSubclass(Classes[" 1440fdb1f493ab6bcfb5603b9f497195492d92aceacbDaniel Dunbar << i << "], it->Classes[" << i << "]))\n"; 1441a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " continue;\n"; 1442a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 1443a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "\n"; 1444a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return ConvertToMCInst(it->ConvertFn, Inst, " 1445a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "it->Opcode, Operands);\n"; 1446a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " }\n\n"; 1447a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 1448a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OS << " return true;\n"; 1449a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OS << "}\n\n"; 1450d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar} 1451