AsmMatcherEmitter.cpp revision 2b54481a77696d47dc9220cd7a36155599750904
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 9020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarnamespace { 912724915c171b08fa9f7f9e54a46ea81708d9c5b2Daniel Dunbarstatic cl::opt<std::string> 92606e8ad796f72824f5509e2657c44eca025d4bafDaniel DunbarMatchPrefix("match-prefix", cl::init(""), 93606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar cl::desc("Only match instructions with the given prefix")); 9420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 9520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 96a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// FlattenVariants - Flatten an .td file assembly string by selecting the 97a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// variant at index \arg N. 98a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbarstatic std::string FlattenVariants(const std::string &AsmString, 99a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned N) { 100a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar StringRef Cur = AsmString; 101a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar std::string Res = ""; 102a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 103a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (;;) { 10453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Find the start of the next variant string. 10553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar size_t VariantsStart = 0; 10653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar for (size_t e = Cur.size(); VariantsStart != e; ++VariantsStart) 10753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (Cur[VariantsStart] == '{' && 10820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar (VariantsStart == 0 || (Cur[VariantsStart-1] != '$' && 10920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Cur[VariantsStart-1] != '\\'))) 11053a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar break; 11153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 11253a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Add the prefix to the result. 11353a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar Res += Cur.slice(0, VariantsStart); 11453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (VariantsStart == Cur.size()) 115a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar break; 116a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 11753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar ++VariantsStart; // Skip the '{'. 11853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 11953a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar // Scan to the end of the variants string. 12053a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar size_t VariantsEnd = VariantsStart; 12153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar unsigned NestedBraces = 1; 12253a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar for (size_t e = Cur.size(); VariantsEnd != e; ++VariantsEnd) { 12320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Cur[VariantsEnd] == '}' && Cur[VariantsEnd-1] != '\\') { 12453a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar if (--NestedBraces == 0) 12553a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar break; 12653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } else if (Cur[VariantsEnd] == '{') 12753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar ++NestedBraces; 12853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } 129a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 130a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar // Select the Nth variant (or empty). 13153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar StringRef Selection = Cur.slice(VariantsStart, VariantsEnd); 132a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (unsigned i = 0; i != N; ++i) 133a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Selection = Selection.split('|').second; 134a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Res += Selection.split('|').first; 135a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 13653a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar assert(VariantsEnd != Cur.size() && 13753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar "Unterminated variants in assembly string!"); 13853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar Cur = Cur.substr(VariantsEnd + 1); 139a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 140a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 141a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar return Res; 142a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar} 143a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 144a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar/// TokenizeAsmString - Tokenize a simplified assembly string. 14520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstatic void TokenizeAsmString(const StringRef &AsmString, 146a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar SmallVectorImpl<StringRef> &Tokens) { 147a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned Prev = 0; 148a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar bool InTok = true; 149a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (unsigned i = 0, e = AsmString.size(); i != e; ++i) { 150a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar switch (AsmString[i]) { 15120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '[': 15220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case ']': 153a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '*': 154a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '!': 155a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case ' ': 156a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case '\t': 157a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar case ',': 158a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar if (InTok) { 15920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 160a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar InTok = false; 161a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 16220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!isspace(AsmString[i]) && AsmString[i] != ',') 16320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(i, 1)); 164a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar Prev = i + 1; 165a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar break; 16620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 16720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '\\': 16820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 16920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 17020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 17120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 17220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar ++i; 17320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar assert(i != AsmString.size() && "Invalid quoted character"); 17420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(i, 1)); 17520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = i + 1; 17620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 17720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 17820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar case '$': { 17920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If this isn't "${", treat like a normal token. 18020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (i + 1 == AsmString.size() || AsmString[i + 1] != '{') { 18120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 18220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 18320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 18420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 18520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = i; 18620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 18720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 18820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 18920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (InTok) { 19020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(Prev, i)); 19120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InTok = false; 19220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 19320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 19420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef::iterator End = 19520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::find(AsmString.begin() + i, AsmString.end(), '}'); 19620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar assert(End != AsmString.end() && "Missing brace in operand reference!"); 19720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar size_t EndPos = End - AsmString.begin(); 19820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.slice(i, EndPos+1)); 19920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Prev = EndPos + 1; 20020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar i = EndPos; 20120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 20220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 203a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 204a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar default: 205a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar InTok = true; 206a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 207a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 208a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar if (InTok && Prev != AsmString.size()) 20920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens.push_back(AsmString.substr(Prev)); 210a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar} 211a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 21220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstatic bool IsAssemblerInstruction(const StringRef &Name, 21320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction &CGI, 21420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const SmallVectorImpl<StringRef> &Tokens) { 21520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore psuedo ops. 21620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 21720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This is a hack. 21820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (const RecordVal *Form = CGI.TheDef->getValue("Form")) 21920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Form->getValue()->getAsString() == "Pseudo") 22020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 22120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 22220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore "PHI" node. 22320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 22420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This is also a hack. 22520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Name == "PHI") 22620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 22720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 22820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions with no .s string. 22920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 23020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: What are these? 23120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (CGI.AsmString.empty()) 23220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 23320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 23420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Hack; ignore any instructions with a newline in them. 23520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (std::find(CGI.AsmString.begin(), 23620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar CGI.AsmString.end(), '\n') != CGI.AsmString.end()) 23720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 23820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 23920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions with attributes, these are always fake instructions for 24020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // simplifying codegen. 24120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 24220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Is this true? 24320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 24420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Also, we ignore instructions which reference the operand multiple times; 24520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // this implies a constraint we would not currently honor. These are 24620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // currently always fake instructions for simplifying codegen. 24720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 24820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: Encode this assumption in the .td, so we can error out here. 24920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::set<std::string> OperandNames; 25020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 1, e = Tokens.size(); i < e; ++i) { 25120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Tokens[i][0] == '$' && 25220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::find(Tokens[i].begin(), 25320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Tokens[i].end(), ':') != Tokens[i].end()) { 25420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar DEBUG({ 25520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "warning: '" << Name << "': " 25620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "ignoring instruction; operand with attribute '" 25720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << Tokens[i] << "', \n"; 25820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 25920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 26020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 26122be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 26220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Tokens[i][0] == '$' && !OperandNames.insert(Tokens[i]).second) { 26320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar DEBUG({ 26420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "warning: '" << Name << "': " 26520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "ignoring instruction; tied operand '" 2662b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar << Tokens[i] << "'\n"; 26720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 26820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return false; 26920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 27020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 27122be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 27220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar return true; 27320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 27422be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 27520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarnamespace { 27622be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar 277a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// ClassInfo - Helper class for storing the information about a particular 278a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// class of operands which can be matched. 279a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstruct ClassInfo { 280606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar enum ClassInfoKind { 2816745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Invalid = 0, ///< Invalid kind, for use as a sentinel value. 2826745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Token, ///< The class for a particular token. 2836745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Register, ///< A register class. 2846745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar UserClass0 ///< The (first) user defined class, subsequent user defined 2856745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// classes are UserClass0+1, and so on. 286606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar }; 287606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 288606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// Kind - The class kind, which is either a predefined kind, or (UserClass0 + 289606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// N) for the Nth user defined class. 290606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar unsigned Kind; 291a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 2926745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// Name - The full class name, suitable for use in an enum. 293a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string Name; 294a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 2956745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// ClassName - The unadorned generic name for this class (e.g., Token). 2966745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar std::string ClassName; 2976745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 298a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// ValueName - The name of the value this class represents; for a token this 299a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// is the literal token string, for an operand it is the TableGen class (or 300a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// empty if this is a derived class). 301a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string ValueName; 302a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 303a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// PredicateMethod - The name of the operand method to test whether the 304a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// operand matches this class; this is not valid for Token kinds. 305a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string PredicateMethod; 306a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 307a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// RenderMethod - The name of the operand method to add this operand to an 308a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// MCInst; this is not valid for Token kinds. 309a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string RenderMethod; 310606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 311606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// operator< - Compare two classes. 312606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar bool operator<(const ClassInfo &RHS) const { 313606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Incompatible kinds are comparable. 314606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (Kind != RHS.Kind) 315606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return Kind < RHS.Kind; 316606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 317606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar switch (Kind) { 3186745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar case Invalid: 3196745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar assert(0 && "Invalid kind!"); 320606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar case Token: 321606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Tokens are always comparable. 322606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // 323606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // FIXME: Compare by enum value. 324606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return ValueName < RHS.ValueName; 325606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 326606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar case Register: 327606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // FIXME: Compare by subset relation. 328606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return false; 329606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 330606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar default: 331606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // FIXME: Allow user defined relation. 332606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return false; 333606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 334606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 335a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar}; 336a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 337b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar/// InstructionInfo - Helper class for storing the necessary information for an 338b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar/// instruction which is capable of being matched. 33920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarstruct InstructionInfo { 34020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar struct Operand { 341a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The unique class instance this operand should match. 342a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *Class; 343a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 344a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The original operand this corresponds to, if any. 345fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer const CodeGenInstruction::OperandInfo *OperandInfo; 34620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }; 34720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 34820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// InstrName - The target name for this instruction. 34920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string InstrName; 35020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 35120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Instr - The instruction this matches. 35220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction *Instr; 35320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 35420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// AsmString - The assembly string for this instruction (with variants 35520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// removed). 35620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string AsmString; 35720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 35820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Tokens - The tokenized assembly pattern that this instruction matches. 35920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<StringRef, 4> Tokens; 36020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 36120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar /// Operands - The operands that this instruction matches. 36220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<Operand, 4> Operands; 36320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 364b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// ConversionFnKind - The enum value which is passed to the generated 365b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// ConvertToMCInst to convert parsed operands into an MCInst for this 366b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar /// function. 367b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar std::string ConversionFnKind; 36820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 369606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar /// operator< - Compare two instructions. 370606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar bool operator<(const InstructionInfo &RHS) const { 371606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (Operands.size() != RHS.Operands.size()) 372606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar return Operands.size() < RHS.Operands.size(); 3732b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar 374606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) 3752b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class) 3762b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return true; 377606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 3782b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 3792b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 380606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 3812b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// CouldMatchAmiguouslyWith - Check whether this instruction could 3822b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// ambiguously match the same set of operands as \arg RHS (without being a 3832b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar /// strictly superior match). 3842b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar bool CouldMatchAmiguouslyWith(const InstructionInfo &RHS) { 3852b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // The number of operands is unambiguous. 3862b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (Operands.size() != RHS.Operands.size()) 3872b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 388606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 3892b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // Tokens and operand kinds are unambiguous (assuming a correct target 3902b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // specific parser). 391606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) 3922b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (Operands[i].Class->Kind != RHS.Operands[i].Class->Kind || 3932b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar Operands[i].Class->Kind == ClassInfo::Token) 3942b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class || 3952b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar *RHS.Operands[i].Class < *Operands[i].Class) 3962b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return false; 3972b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar 3982b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // Otherwise, this operand could commute if all operands are equivalent, or 3992b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // there is a pair of operands that compare less than and a pair that 4002b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar // compare greater than. 4012b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar bool HasLT = false, HasGT = false; 4022b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 403606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (*Operands[i].Class < *RHS.Operands[i].Class) 4042b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar HasLT = true; 4052b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (*RHS.Operands[i].Class < *Operands[i].Class) 4062b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar HasGT = true; 4072b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 408606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 4092b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar return !(HasLT ^ HasGT); 410606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 411606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 41220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarpublic: 41320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar void dump(); 41420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar}; 41520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 416a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarclass AsmMatcherInfo { 417a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarpublic: 418a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The classes which are needed for matching. 419a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<ClassInfo*> Classes; 420a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 421a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// The information on the instruction to match. 422a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<InstructionInfo*> Instructions; 423a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 424a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarprivate: 425a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// Map of token to class information which has already been constructed. 426a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::map<std::string, ClassInfo*> TokenClasses; 427a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 428a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// Map of operand name to class information which has already been 429a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// constructed. 430a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::map<std::string, ClassInfo*> OperandClasses; 431a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 4326745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// Map of user class names to kind value. 4336745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar std::map<std::string, unsigned> UserClasses; 4346745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 435a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarprivate: 436a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// getTokenClass - Lookup or create the class for the given token. 437a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *getTokenClass(const StringRef &Token); 438a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 4396745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// getUserClassKind - Lookup or create the kind value for the given class 4406745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar /// name. 4416745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar unsigned getUserClassKind(const StringRef &Name); 4426745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 443a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// getOperandClass - Lookup or create the class for the given operand. 444a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *getOperandClass(const StringRef &Token, 445a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar const CodeGenInstruction::OperandInfo &OI); 446a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 447a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarpublic: 448a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar /// BuildInfo - Construct the various tables used during matching. 449a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar void BuildInfo(CodeGenTarget &Target); 450a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar}; 451a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 45220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 45320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 45420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbarvoid InstructionInfo::dump() { 45520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << InstrName << " -- " << "flattened:\"" << AsmString << '\"' 45620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << ", tokens:["; 45720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = Tokens.size(); i != e; ++i) { 45820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << Tokens[i]; 45920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (i + 1 != e) 46020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << ", "; 46122be5225ff88ffaab83c36fa133e70586b91166dDaniel Dunbar } 46220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "]\n"; 463a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 46420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 46520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Operand &Op = Operands[i]; 4666745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar errs() << " op[" << i << "] = " << Op.Class->ClassName << " - "; 467a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (Op.Class->Kind == ClassInfo::Token) { 46820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << '\"' << Tokens[i] << "\"\n"; 46920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 47020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 471a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 472fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer const CodeGenInstruction::OperandInfo &OI = *Op.OperandInfo; 47320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << OI.Name << " " << OI.Rec->getName() 47420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << " (" << OI.MIOperandNo << ", " << OI.MINumOperands << ")\n"; 47520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 47620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 477a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 478a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic std::string getEnumNameForToken(const StringRef &Str) { 479a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string Res; 480a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 481a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (StringRef::iterator it = Str.begin(), ie = Str.end(); it != ie; ++it) { 482a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar switch (*it) { 483a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case '*': Res += "_STAR_"; break; 484a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case '%': Res += "_PCT_"; break; 485a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar case ':': Res += "_COLON_"; break; 486a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 487a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar default: 488a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (isalnum(*it)) { 489a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Res += *it; 490a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 491a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Res += "_" + utostr((unsigned) *it) + "_"; 492a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 493a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 494a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 49520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 496a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar return Res; 497a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 498a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 499a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarClassInfo *AsmMatcherInfo::getTokenClass(const StringRef &Token) { 500a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *&Entry = TokenClasses[Token]; 501a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 502a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (!Entry) { 503a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry = new ClassInfo(); 504a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Kind = ClassInfo::Token; 5056745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Entry->ClassName = "Token"; 506a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Name = "MCK_" + getEnumNameForToken(Token); 507a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->ValueName = Token; 508a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->PredicateMethod = "<invalid>"; 509a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->RenderMethod = "<invalid>"; 510a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Classes.push_back(Entry); 511a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 512a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 513a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar return Entry; 514a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 515a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 5166745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbarunsigned AsmMatcherInfo::getUserClassKind(const StringRef &Name) { 5176745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar unsigned &Entry = UserClasses[Name]; 5186745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 5196745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar if (!Entry) 5206745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Entry = ClassInfo::UserClass0 + UserClasses.size() - 1; 5216745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 5226745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar return Entry; 5236745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar} 5246745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar 525a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarClassInfo * 526a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel DunbarAsmMatcherInfo::getOperandClass(const StringRef &Token, 527a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar const CodeGenInstruction::OperandInfo &OI) { 528a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::string ClassName; 529a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (OI.Rec->isSubClassOf("RegisterClass")) { 530a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassName = "Reg"; 5316745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar } else { 5326745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar try { 5336745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar ClassName = OI.Rec->getValueAsString("ParserMatchClass"); 5346745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar assert(ClassName != "Reg" && "'Reg' class name is reserved!"); 5356745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar } catch(...) { 5366745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar PrintError(OI.Rec->getLoc(), "operand has no match class!"); 5376745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar ClassName = "Invalid"; 538a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 539a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 540a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 541a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo *&Entry = OperandClasses[ClassName]; 542a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 543a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (!Entry) { 544a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry = new ClassInfo(); 545a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // FIXME: Hack. 546a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (ClassName == "Reg") { 547a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Kind = ClassInfo::Register; 548a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 5496745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Entry->Kind = getUserClassKind(ClassName); 550a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 5516745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Entry->ClassName = ClassName; 552a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->Name = "MCK_" + ClassName; 553a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->ValueName = OI.Rec->getName(); 554a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->PredicateMethod = "is" + ClassName; 555a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Entry->RenderMethod = "add" + ClassName + "Operands"; 556a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Classes.push_back(Entry); 557a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 558a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 559a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar return Entry; 560a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 561a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 562a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarvoid AsmMatcherInfo::BuildInfo(CodeGenTarget &Target) { 563a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar for (std::map<std::string, CodeGenInstruction>::const_iterator 564a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it = Target.getInstructions().begin(), 565a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ie = Target.getInstructions().end(); 566a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) { 567a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar const CodeGenInstruction &CGI = it->second; 568a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 569606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (!StringRef(it->first).startswith(MatchPrefix)) 57053a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar continue; 57153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 57220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OwningPtr<InstructionInfo> II(new InstructionInfo); 57320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 57420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->InstrName = it->first; 57520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Instr = &it->second; 57620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->AsmString = FlattenVariants(CGI.AsmString, 0); 57720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 57820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar TokenizeAsmString(II->AsmString, II->Tokens); 579a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 58020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Ignore instructions which shouldn't be matched. 58120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!IsAssemblerInstruction(it->first, CGI, II->Tokens)) 582a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar continue; 583a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 58420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II->Tokens.size(); i != e; ++i) { 58520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef Token = II->Tokens[i]; 58620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 58720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Check for simple tokens. 58820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Token[0] != '$') { 58920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand Op; 590a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Op.Class = getTokenClass(Token); 591fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Op.OperandInfo = 0; 59220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Operands.push_back(Op); 59320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 59420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 595a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 59620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Otherwise this is an operand reference. 59720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar StringRef OperandName; 59820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Token[1] == '{') 59920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OperandName = Token.substr(2, Token.size() - 3); 60020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar else 60120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OperandName = Token.substr(1); 60220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 60320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Map this token to an operand. FIXME: Move elsewhere. 60420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar unsigned Idx; 60520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar try { 60620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Idx = CGI.getOperandNamed(OperandName); 60720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } catch(...) { 60820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar errs() << "error: unable to find operand: '" << OperandName << "'!\n"; 60920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar break; 61020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 611a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 61220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction::OperandInfo &OI = CGI.OperandList[Idx]; 613a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar InstructionInfo::Operand Op; 614a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Op.Class = getOperandClass(Token, OI); 615fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Op.OperandInfo = &OI; 61620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar II->Operands.push_back(Op); 61753a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar } 61853a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar 61920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If we broke out, ignore the instruction. 62020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (II->Operands.size() != II->Tokens.size()) 62153a7f16dcc96de71fa46f641c59470586548081eDaniel Dunbar continue; 622a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 623a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Instructions.push_back(II.take()); 62420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 62520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 626a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 627606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbarstatic void EmitConvertToMCInst(CodeGenTarget &Target, 628606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar std::vector<InstructionInfo*> &Infos, 629606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar raw_ostream &OS) { 630b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Write the convert function to a separate stream, so we can drop it after 631b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // the enum. 632b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar std::string ConvertFnBody; 633b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar raw_string_ostream CvtOS(ConvertFnBody); 634b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 63520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Function we have already generated. 63620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::set<std::string> GeneratedFns; 63720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 638b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Start the unified conversion function. 639b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 640b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << "static bool ConvertToMCInst(ConversionKind Kind, MCInst &Inst, " 641b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << "unsigned Opcode,\n" 642b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << " SmallVectorImpl<" 643b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar << Target.getName() << "Operand> &Operands) {\n"; 644b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.setOpcode(Opcode);\n"; 645b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " switch (Kind) {\n"; 646b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " default:\n"; 647b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 648b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Start the enum, which we will generate inline. 649b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 650b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "// Unified function for converting operants to MCInst instances.\n\n"; 651b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "enum ConversionKind {\n"; 652b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 65320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = Infos.begin(), 65420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 65520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo &II = **it; 65620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 65720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Order the (class) operands by the order to convert them into an MCInst. 65820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar SmallVector<std::pair<unsigned, unsigned>, 4> MIOperandList; 65920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Operands.size(); i != e; ++i) { 66020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[i]; 661fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer if (Op.OperandInfo) 662fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer MIOperandList.push_back(std::make_pair(Op.OperandInfo->MIOperandNo, i)); 66320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 66420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::sort(MIOperandList.begin(), MIOperandList.end()); 665a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 66620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Compute the total number of operands. 667a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar unsigned NumMIOperands = 0; 66820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Instr->OperandList.size(); i != e; ++i) { 66920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar const CodeGenInstruction::OperandInfo &OI = II.Instr->OperandList[i]; 670a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar NumMIOperands = std::max(NumMIOperands, 671a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OI.MIOperandNo + OI.MINumOperands); 672a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 673a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 67420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Build the conversion function signature. 67520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar std::string Signature = "Convert"; 67620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar unsigned CurIndex = 0; 67720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = MIOperandList.size(); i != e; ++i) { 67820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[MIOperandList[i].second]; 679fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer assert(CurIndex <= Op.OperandInfo->MIOperandNo && 68020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar "Duplicate match for instruction operand!"); 68120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 682b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar Signature += "_"; 683b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 68420927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Skip operands which weren't matched by anything, this occurs when the 68520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // .td file encodes "implicit" operands as explicit ones. 68620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // 68720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // FIXME: This should be removed from the MCInst structure. 688fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer for (; CurIndex != Op.OperandInfo->MIOperandNo; ++CurIndex) 68920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Signature += "Imp"; 690a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 6916745d42e8e51ba6b9546d6fa62e0c1b1e0f3982aDaniel Dunbar Signature += Op.Class->ClassName; 692fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer Signature += utostr(Op.OperandInfo->MINumOperands); 693b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar Signature += "_" + utostr(MIOperandList[i].second); 694b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 695fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer CurIndex += Op.OperandInfo->MINumOperands; 69620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 697a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 69820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Add any trailing implicit operands. 69920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (; CurIndex != NumMIOperands; ++CurIndex) 70020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar Signature += "Imp"; 701a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 702b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar II.ConversionFnKind = Signature; 703a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 704b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Check if we have already generated this signature. 70520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (!GeneratedFns.insert(Signature).second) 70620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 707a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 70820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // If not, emit it now. 709b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 710b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Add to the enum list. 711b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << " " << Signature << ",\n"; 712b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 713b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // And to the convert function. 714b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " case " << Signature << ":\n"; 71520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar CurIndex = 0; 71620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = MIOperandList.size(); i != e; ++i) { 71720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[MIOperandList[i].second]; 71820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 71920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // Add the implicit operands. 720fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer for (; CurIndex != Op.OperandInfo->MIOperandNo; ++CurIndex) 721b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.addOperand(MCOperand::CreateReg(0));\n"; 72220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 723b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Operands[" << MIOperandList[i].second 724a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "]." << Op.Class->RenderMethod 725fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer << "(Inst, " << Op.OperandInfo->MINumOperands << ");\n"; 726fa1165abb8fec9383d640b0696a9f397b9153bafBenjamin Kramer CurIndex += Op.OperandInfo->MINumOperands; 727a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 72820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 72920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar // And add trailing implicit operands. 73020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (; CurIndex != NumMIOperands; ++CurIndex) 731b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " Inst.addOperand(MCOperand::CreateReg(0));\n"; 732b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " break;\n"; 733a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 734b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 735b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Finish the convert function. 736b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 737b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " }\n"; 738b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << " return false;\n"; 739b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar CvtOS << "}\n\n"; 740b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 741b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar // Finish the enum, and drop the convert function after it. 742b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 743b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << " NumConversionVariants\n"; 744b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << "};\n\n"; 745b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar 746b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar OS << CvtOS.str(); 74720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar} 74820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 749a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// EmitMatchClassEnumeration - Emit the enumeration for match class kinds. 750a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic void EmitMatchClassEnumeration(CodeGenTarget &Target, 751a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<ClassInfo*> &Infos, 752a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar raw_ostream &OS) { 753a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "namespace {\n\n"; 754a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 755a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "/// MatchClassKind - The kinds of classes which participate in\n" 756a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "/// instruction matching.\n"; 757a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "enum MatchClassKind {\n"; 758a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " InvalidMatchClass = 0,\n"; 759a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 760a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ie = Infos.end(); it != ie; ++it) { 761a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo &CI = **it; 762a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " " << CI.Name << ", // "; 763a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (CI.Kind == ClassInfo::Token) { 764a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "'" << CI.ValueName << "'\n"; 765a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else if (CI.Kind == ClassInfo::Register) { 766a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (!CI.ValueName.empty()) 767a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "register class '" << CI.ValueName << "'\n"; 768a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar else 769a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "derived register class\n"; 770a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } else { 771a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "user defined class '" << CI.ValueName << "'\n"; 772a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 773a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 774a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " NumMatchClassKinds\n"; 775a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "};\n\n"; 776a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 777a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "}\n\n"; 778a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 779a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 780a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar/// EmitClassifyOperand - Emit the function to classify an operand. 781a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbarstatic void EmitClassifyOperand(CodeGenTarget &Target, 782a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar std::vector<ClassInfo*> &Infos, 783a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar raw_ostream &OS) { 784a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "static MatchClassKind ClassifyOperand(" 785a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << Target.getName() << "Operand &Operand) {\n"; 786a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Operand.isToken())\n"; 787a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return MatchTokenString(Operand.getToken());\n\n"; 788a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 789a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ie = Infos.end(); it != ie; ++it) { 790a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar ClassInfo &CI = **it; 791a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 792a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (CI.Kind != ClassInfo::Token) { 793a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Operand." << CI.PredicateMethod << "())\n"; 794a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return " << CI.Name << ";\n\n"; 795a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 796a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 797a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return InvalidMatchClass;\n"; 798a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "}\n\n"; 799a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar} 800a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 80170add884e4967f511e2cbb35c61534186b9b418aChris Lattnertypedef std::pair<std::string, std::string> StringPair; 80270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 80370add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// FindFirstNonCommonLetter - Find the first character in the keys of the 80470add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// string pairs that is not shared across the whole set of strings. All 80570add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// strings are assumed to have the same length. 80670add884e4967f511e2cbb35c61534186b9b418aChris Lattnerstatic unsigned 80770add884e4967f511e2cbb35c61534186b9b418aChris LattnerFindFirstNonCommonLetter(const std::vector<const StringPair*> &Matches) { 80870add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(!Matches.empty()); 80970add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches[0]->first.size(); i != e; ++i) { 81070add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Check to see if letter i is the same across the set. 81170add884e4967f511e2cbb35c61534186b9b418aChris Lattner char Letter = Matches[0]->first[i]; 81270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 81370add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned str = 0, e = Matches.size(); str != e; ++str) 81470add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (Matches[str]->first[i] != Letter) 81570add884e4967f511e2cbb35c61534186b9b418aChris Lattner return i; 81670add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 81770add884e4967f511e2cbb35c61534186b9b418aChris Lattner 81870add884e4967f511e2cbb35c61534186b9b418aChris Lattner return Matches[0]->first.size(); 81970add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 82070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 82170add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// EmitStringMatcherForChar - Given a set of strings that are known to be the 82270add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// same length and whose characters leading up to CharNo are the same, emit 82370add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// code to verify that CharNo and later are the same. 82472ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 82572ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// \return - True if control can leave the emitted code fragment. 82672ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbarstatic bool EmitStringMatcherForChar(const std::string &StrVariableName, 82770add884e4967f511e2cbb35c61534186b9b418aChris Lattner const std::vector<const StringPair*> &Matches, 82870add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned CharNo, unsigned IndentCount, 82970add884e4967f511e2cbb35c61534186b9b418aChris Lattner raw_ostream &OS) { 83070add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(!Matches.empty() && "Must have at least one string to match!"); 83170add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::string Indent(IndentCount*2+4, ' '); 83270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 83370add884e4967f511e2cbb35c61534186b9b418aChris Lattner // If we have verified that the entire string matches, we're done: output the 83470add884e4967f511e2cbb35c61534186b9b418aChris Lattner // matching code. 83570add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (CharNo == Matches[0]->first.size()) { 83670add884e4967f511e2cbb35c61534186b9b418aChris Lattner assert(Matches.size() == 1 && "Had duplicate keys to match on"); 83770add884e4967f511e2cbb35c61534186b9b418aChris Lattner 83870add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: If Matches[0].first has embeded \n, this will be bad. 83970add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << Matches[0]->second << "\t // \"" << Matches[0]->first 84070add884e4967f511e2cbb35c61534186b9b418aChris Lattner << "\"\n"; 84172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return false; 84270add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 84370add884e4967f511e2cbb35c61534186b9b418aChris Lattner 84470add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Bucket the matches by the character we are comparing. 84570add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::map<char, std::vector<const StringPair*> > MatchesByLetter; 84670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 84770add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches.size(); i != e; ++i) 84870add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLetter[Matches[i]->first[CharNo]].push_back(Matches[i]); 84970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 85070add884e4967f511e2cbb35c61534186b9b418aChris Lattner 85170add884e4967f511e2cbb35c61534186b9b418aChris Lattner // If we have exactly one bucket to match, see how many characters are common 85270add884e4967f511e2cbb35c61534186b9b418aChris Lattner // across the whole set and match all of them at once. 85370add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (MatchesByLetter.size() == 1) { 85470add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned FirstNonCommonLetter = FindFirstNonCommonLetter(Matches); 85570add884e4967f511e2cbb35c61534186b9b418aChris Lattner unsigned NumChars = FirstNonCommonLetter-CharNo; 85670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 85772ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Emit code to break out if the prefix doesn't match. 85870add884e4967f511e2cbb35c61534186b9b418aChris Lattner if (NumChars == 1) { 85972ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Do the comparison with if (Str[1] != 'f') 86070add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: Need to escape general characters. 86172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << "if (" << StrVariableName << "[" << CharNo << "] != '" 86272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar << Matches[0]->first[CharNo] << "')\n"; 86372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << " break;\n"; 86470add884e4967f511e2cbb35c61534186b9b418aChris Lattner } else { 86572ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar // Do the comparison with if (Str.substr(1,3) != "foo"). 86670add884e4967f511e2cbb35c61534186b9b418aChris Lattner // FIXME: Need to escape general strings. 86772ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << "if (" << StrVariableName << ".substr(" << CharNo << "," 86872ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar << NumChars << ") != \""; 86972ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Matches[0]->first.substr(CharNo, NumChars) << "\")\n"; 870af3e9d43a2d8ba3cf5f65f54bd928846bec3ab67Daniel Dunbar OS << Indent << " break;\n"; 87170add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 87270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 87372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return EmitStringMatcherForChar(StrVariableName, Matches, 87472ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar FirstNonCommonLetter, IndentCount, OS); 87570add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 87670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 87770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Otherwise, we have multiple possible things, emit a switch on the 87870add884e4967f511e2cbb35c61534186b9b418aChris Lattner // character. 87970add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "switch (" << StrVariableName << "[" << CharNo << "]) {\n"; 88070add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "default: break;\n"; 88170add884e4967f511e2cbb35c61534186b9b418aChris Lattner 88270add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (std::map<char, std::vector<const StringPair*> >::iterator LI = 88370add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLetter.begin(), E = MatchesByLetter.end(); LI != E; ++LI) { 88470add884e4967f511e2cbb35c61534186b9b418aChris Lattner // TODO: escape hard stuff (like \n) if we ever care about it. 88570add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "case '" << LI->first << "':\t // " 88670add884e4967f511e2cbb35c61534186b9b418aChris Lattner << LI->second.size() << " strings to match.\n"; 88772ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar if (EmitStringMatcherForChar(StrVariableName, LI->second, CharNo+1, 88872ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar IndentCount+1, OS)) 88972ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << Indent << " break;\n"; 89070add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 89170add884e4967f511e2cbb35c61534186b9b418aChris Lattner 89270add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << Indent << "}\n"; 89372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar return true; 89470add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 89570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 89670add884e4967f511e2cbb35c61534186b9b418aChris Lattner 89770add884e4967f511e2cbb35c61534186b9b418aChris Lattner/// EmitStringMatcher - Given a list of strings and code to execute when they 89872ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// match, output a simple switch tree to classify the input string. 89972ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 90072ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// If a match is found, the code in Vals[i].second is executed; control must 90172ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// not exit this code fragment. If nothing matches, execution falls through. 90272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// 90372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar/// \param StrVariableName - The name of the variable to test. 90470add884e4967f511e2cbb35c61534186b9b418aChris Lattnerstatic void EmitStringMatcher(const std::string &StrVariableName, 90570add884e4967f511e2cbb35c61534186b9b418aChris Lattner const std::vector<StringPair> &Matches, 90670add884e4967f511e2cbb35c61534186b9b418aChris Lattner raw_ostream &OS) { 90770add884e4967f511e2cbb35c61534186b9b418aChris Lattner // First level categorization: group strings by length. 90870add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::map<unsigned, std::vector<const StringPair*> > MatchesByLength; 90970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 91070add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (unsigned i = 0, e = Matches.size(); i != e; ++i) 91170add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLength[Matches[i].first.size()].push_back(&Matches[i]); 91270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 91370add884e4967f511e2cbb35c61534186b9b418aChris Lattner // Output a switch statement on length and categorize the elements within each 91470add884e4967f511e2cbb35c61534186b9b418aChris Lattner // bin. 91570add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " switch (" << StrVariableName << ".size()) {\n"; 91670add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " default: break;\n"; 91770add884e4967f511e2cbb35c61534186b9b418aChris Lattner 91870add884e4967f511e2cbb35c61534186b9b418aChris Lattner for (std::map<unsigned, std::vector<const StringPair*> >::iterator LI = 91970add884e4967f511e2cbb35c61534186b9b418aChris Lattner MatchesByLength.begin(), E = MatchesByLength.end(); LI != E; ++LI) { 92070add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " case " << LI->first << ":\t // " << LI->second.size() 92170add884e4967f511e2cbb35c61534186b9b418aChris Lattner << " strings to match.\n"; 92272ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar if (EmitStringMatcherForChar(StrVariableName, LI->second, 0, 0, OS)) 92372ffae90ce9750b46b9a7cc84e5c11dae9274ebeDaniel Dunbar OS << " break;\n"; 92470add884e4967f511e2cbb35c61534186b9b418aChris Lattner } 92570add884e4967f511e2cbb35c61534186b9b418aChris Lattner 92670add884e4967f511e2cbb35c61534186b9b418aChris Lattner OS << " }\n"; 92770add884e4967f511e2cbb35c61534186b9b418aChris Lattner} 92870add884e4967f511e2cbb35c61534186b9b418aChris Lattner 92970add884e4967f511e2cbb35c61534186b9b418aChris Lattner 930245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar/// EmitMatchTokenString - Emit the function to match a token string to the 931245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar/// appropriate match class value. 932245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbarstatic void EmitMatchTokenString(CodeGenTarget &Target, 933245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar std::vector<ClassInfo*> &Infos, 934245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar raw_ostream &OS) { 935245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar // Construct the match list. 936245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar std::vector<StringPair> Matches; 937245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar for (std::vector<ClassInfo*>::iterator it = Infos.begin(), 938245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar ie = Infos.end(); it != ie; ++it) { 939245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar ClassInfo &CI = **it; 940245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 941245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar if (CI.Kind == ClassInfo::Token) 942245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar Matches.push_back(StringPair(CI.ValueName, "return " + CI.Name + ";")); 943245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar } 944245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 945245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "static MatchClassKind MatchTokenString(const StringRef &Name) {\n"; 946245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 947245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar EmitStringMatcher("Name", Matches, OS); 948245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 949245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << " return InvalidMatchClass;\n"; 950245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "}\n\n"; 951245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar} 95270add884e4967f511e2cbb35c61534186b9b418aChris Lattner 9532234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar/// EmitMatchRegisterName - Emit the function to match a string to the target 9542234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar/// specific register enum. 9552234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbarstatic void EmitMatchRegisterName(CodeGenTarget &Target, Record *AsmParser, 9562234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar raw_ostream &OS) { 957245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar // Construct the match list. 95870add884e4967f511e2cbb35c61534186b9b418aChris Lattner std::vector<StringPair> Matches; 959245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar for (unsigned i = 0, e = Target.getRegisters().size(); i != e; ++i) { 960245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar const CodeGenRegister &Reg = Target.getRegisters()[i]; 96120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar if (Reg.TheDef->getValueAsString("AsmName").empty()) 96220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar continue; 96320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 96470add884e4967f511e2cbb35c61534186b9b418aChris Lattner Matches.push_back(StringPair(Reg.TheDef->getValueAsString("AsmName"), 965245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar "return " + utostr(i + 1) + ";")); 96620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 96770add884e4967f511e2cbb35c61534186b9b418aChris Lattner 968245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << "unsigned " << Target.getName() 969245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar << AsmParser->getValueAsString("AsmParserClassName") 970245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar << "::MatchRegisterName(const StringRef &Name) {\n"; 971245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar 97270add884e4967f511e2cbb35c61534186b9b418aChris Lattner EmitStringMatcher("Name", Matches, OS); 97370add884e4967f511e2cbb35c61534186b9b418aChris Lattner 974245f05843f7f17406f394696e7330950e6d88e6dDaniel Dunbar OS << " return 0;\n"; 97520927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OS << "}\n\n"; 9762234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar} 9772234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 9782234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbarvoid AsmMatcherEmitter::run(raw_ostream &OS) { 9792234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar CodeGenTarget Target; 9802234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar Record *AsmParser = Target.getAsmParser(); 9812234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar std::string ClassName = AsmParser->getValueAsString("AsmParserClassName"); 9822234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 9832234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar EmitSourceFileHeader("Assembly Matcher Source Fragment", OS); 9842234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar 9852234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar // Emit the function to match a register name to number. 9862234e5eee6d196594d42e6f2be51e176bf5e5f6eDaniel Dunbar EmitMatchRegisterName(Target, AsmParser, OS); 98720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 988a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Compute the information on the instructions to match. 989a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar AsmMatcherInfo Info; 990a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.BuildInfo(Target); 99120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 992606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Sort the instruction table using the partial order on classes. 993606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar std::sort(Info.Instructions.begin(), Info.Instructions.end(), 994606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar less_ptr<InstructionInfo>()); 995606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 996b7479c035534b1c240117cd0aea8342393160da8Daniel Dunbar DEBUG_WITH_TYPE("instruction_info", { 997a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::iterator 998a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it = Info.Instructions.begin(), ie = Info.Instructions.end(); 999a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) 100020927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar (*it)->dump(); 100120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar }); 100220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1003606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Check for ambiguous instructions. 1004606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar unsigned NumAmbiguous = 0; 10052b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned i = 0, e = Info.Instructions.size(); i != e; ++i) { 10062b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar for (unsigned j = i + 1; j != e; ++j) { 10072b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar InstructionInfo &A = *Info.Instructions[i]; 10082b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar InstructionInfo &B = *Info.Instructions[j]; 1009606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 10102b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar if (A.CouldMatchAmiguouslyWith(B)) { 10112b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar DEBUG_WITH_TYPE("ambiguous_instrs", { 10122b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "warning: ambiguous instruction match:\n"; 10132b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar A.dump(); 10142b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "\nis incomparable with:\n"; 10152b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar B.dump(); 10162b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar errs() << "\n\n"; 10172b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar }); 10182b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar ++NumAmbiguous; 10192b54481a77696d47dc9220cd7a36155599750904Daniel Dunbar } 1020606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 1021606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar } 1022606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar if (NumAmbiguous) 1023606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar DEBUG_WITH_TYPE("ambiguous_instrs", { 1024606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar errs() << "warning: " << NumAmbiguous 1025606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar << " ambiguous instructions!\n"; 1026606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar }); 1027606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar 1028606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar // Generate the unified function to convert operands into an MCInst. 1029606e8ad796f72824f5509e2657c44eca025d4bafDaniel Dunbar EmitConvertToMCInst(Target, Info.Instructions, OS); 1030a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1031a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the enumeration for classes which participate in matching. 1032a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar EmitMatchClassEnumeration(Target, Info.Classes, OS); 103320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1034a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the routine to match token strings to their match class. 1035a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar EmitMatchTokenString(Target, Info.Classes, OS); 103620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1037a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the routine to classify an operand. 1038a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar EmitClassifyOperand(Target, Info.Classes, OS); 1039a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1040a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Finally, build the match function. 1041a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1042a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar size_t MaxNumOperands = 0; 1043a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = 1044a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.Instructions.begin(), ie = Info.Instructions.end(); 1045a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) 1046a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar MaxNumOperands = std::max(MaxNumOperands, (*it)->Operands.size()); 1047a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 104820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar OS << "bool " << Target.getName() << ClassName 104920927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar << "::MatchInstruction(" 1050a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar << "SmallVectorImpl<" << Target.getName() << "Operand> &Operands, " 1051a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar << "MCInst &Inst) {\n"; 105220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1053a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit the static match table; unused classes get initalized to 0 which is 1054a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // guaranteed to be InvalidMatchClass. 1055a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // 1056a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // FIXME: We can reduce the size of this table very easily. First, we change 1057a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // it so that store the kinds in separate bit-fields for each index, which 1058a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // only needs to be the max width used for classes at that index (we also need 1059a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // to reject based on this during classification). If we then make sure to 1060a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // order the match kinds appropriately (putting mnemonics last), then we 1061a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // should only end up using a few bits for each class, especially the ones 1062a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // following the mnemonic. 1063c6049534605af5f13d1b5149488b0a9efd294582Chris Lattner OS << " static const struct MatchEntry {\n"; 1064a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " unsigned Opcode;\n"; 1065a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " ConversionKind ConvertFn;\n"; 1066a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n"; 1067a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " } MatchTable[" << Info.Instructions.size() << "] = {\n"; 1068a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1069a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (std::vector<InstructionInfo*>::const_iterator it = 1070a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar Info.Instructions.begin(), ie = Info.Instructions.end(); 1071a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar it != ie; ++it) { 107220927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo &II = **it; 107320927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1074a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " { " << Target.getName() << "::" << II.InstrName 1075a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << ", " << II.ConversionFnKind << ", { "; 107620927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar for (unsigned i = 0, e = II.Operands.size(); i != e; ++i) { 107720927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar InstructionInfo::Operand &Op = II.Operands[i]; 107820927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar 1079a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar if (i) OS << ", "; 1080a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << Op.Class->Name; 108120927f26fcd7d0394bc60c58c61d879a83adac0dDaniel Dunbar } 1082a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " } },\n"; 1083a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar } 1084a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1085a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " };\n\n"; 1086a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1087a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit code to compute the class list for this operand vector. 1088a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Eliminate obvious mismatches.\n"; 1089a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Operands.size() > " << MaxNumOperands << ")\n"; 1090a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return true;\n\n"; 1091a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1092a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Compute the class list for this operand vector.\n"; 1093a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " MatchClassKind Classes[" << MaxNumOperands << "];\n"; 1094a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " for (unsigned i = 0, e = Operands.size(); i != e; ++i) {\n"; 1095a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " Classes[i] = ClassifyOperand(Operands[i]);\n\n"; 1096a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1097a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Check for invalid operands before matching.\n"; 1098a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Classes[i] == InvalidMatchClass)\n"; 1099a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return true;\n"; 1100a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " }\n\n"; 1101a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1102a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Mark unused classes.\n"; 1103a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " for (unsigned i = Operands.size(), e = " << MaxNumOperands << "; " 1104a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "i != e; ++i)\n"; 1105a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " Classes[i] = InvalidMatchClass;\n\n"; 1106a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar 1107a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar // Emit code to search the table. 1108a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " // Search the table.\n"; 1109d39bd3aa5c795e55c0e2c4a5c72dab58ce1a1576Chris Lattner OS << " for (const MatchEntry *it = MatchTable, " 1110a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "*ie = MatchTable + " << Info.Instructions.size() 1111a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "; it != ie; ++it) {\n"; 1112a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar for (unsigned i = 0; i != MaxNumOperands; ++i) { 1113a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " if (Classes[" << i << "] != it->Classes[" << i << "])\n"; 1114a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " continue;\n"; 1115a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar } 1116a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << "\n"; 1117a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " return ConvertToMCInst(it->ConvertFn, Inst, " 1118a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar << "it->Opcode, Operands);\n"; 1119a3741fa28b1a397ebfd623ef9d14e978df94ce47Daniel Dunbar OS << " }\n\n"; 1120a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar 1121a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OS << " return true;\n"; 1122a027d222e18ea9028e9e12ae2f5cd566889b599aDaniel Dunbar OS << "}\n\n"; 1123d51ffcf303070b0a5aea7f365b85f6f969c384cbDaniel Dunbar} 1124