1df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner//===-- PPCPredicates.h - PPC Branch Predicate Information ------*- C++ -*-===// 2df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// 3df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// The LLVM Compiler Infrastructure 4df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// 8df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner//===----------------------------------------------------------------------===// 9df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// 10df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// This file describes the PowerPC branch predicates. 11df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner// 12df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner//===----------------------------------------------------------------------===// 13df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner 14df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner#ifndef LLVM_TARGET_POWERPC_PPCPREDICATES_H 15df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner#define LLVM_TARGET_POWERPC_PPCPREDICATES_H 16df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner 17399532b25a939d8c653fd453137bb8e01dc4b8fcRafael Espindola// GCC #defines PPC on Linux but we use it as our namespace name 18399532b25a939d8c653fd453137bb8e01dc4b8fcRafael Espindola#undef PPC 19399532b25a939d8c653fd453137bb8e01dc4b8fcRafael Espindola 2053856be683113838cc112331adca3717d4a520ccSylvestre Ledru// Generated files will use "namespace PPC". To avoid symbol clash, 2153856be683113838cc112331adca3717d4a520ccSylvestre Ledru// undefine PPC here. PPC may be predefined on some hosts. 2253856be683113838cc112331adca3717d4a520ccSylvestre Ledru#undef PPC 2353856be683113838cc112331adca3717d4a520ccSylvestre Ledru 24df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattnernamespace llvm { 25df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattnernamespace PPC { 26df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner /// Predicate - These are "(BI << 5) | BO" for various predicates. 27df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner enum Predicate { 282e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LT = (0 << 5) | 12, 292e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LE = (1 << 5) | 4, 302e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_EQ = (2 << 5) | 12, 312e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GE = (0 << 5) | 4, 322e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GT = (1 << 5) | 12, 332e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NE = (2 << 5) | 4, 342e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_UN = (3 << 5) | 12, 352e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NU = (3 << 5) | 4, 362e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LT_MINUS = (0 << 5) | 14, 372e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LE_MINUS = (1 << 5) | 6, 382e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_EQ_MINUS = (2 << 5) | 14, 392e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GE_MINUS = (0 << 5) | 6, 402e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GT_MINUS = (1 << 5) | 14, 412e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NE_MINUS = (2 << 5) | 6, 422e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_UN_MINUS = (3 << 5) | 14, 432e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NU_MINUS = (3 << 5) | 6, 442e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LT_PLUS = (0 << 5) | 15, 452e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_LE_PLUS = (1 << 5) | 7, 462e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_EQ_PLUS = (2 << 5) | 15, 472e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GE_PLUS = (0 << 5) | 7, 482e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_GT_PLUS = (1 << 5) | 15, 492e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NE_PLUS = (2 << 5) | 7, 502e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_UN_PLUS = (3 << 5) | 15, 512e8bd8950345b0857130dd0f4068222a79c103f2Ulrich Weigand PRED_NU_PLUS = (3 << 5) | 7 52df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner }; 53df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner 54df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner /// Invert the specified predicate. != -> ==, < -> >=. 55df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner Predicate InvertPredicate(Predicate Opcode); 56abe64dc6f7363c7e6170568e382fb06d81d62f51Hal Finkel 57abe64dc6f7363c7e6170568e382fb06d81d62f51Hal Finkel /// Assume the condition register is set by MI(a,b), return the predicate if 58abe64dc6f7363c7e6170568e382fb06d81d62f51Hal Finkel /// we modify the instructions such that condition register is set by MI(b,a). 59abe64dc6f7363c7e6170568e382fb06d81d62f51Hal Finkel Predicate getSwappedPredicate(Predicate Opcode); 60df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner} 61df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner} 62df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner 63df4ed6350b2a51f71c0980e86c9078f4046ea706Chris Lattner#endif 64