PPCPredicates.h revision 263508
1139749Simp//===-- PPCPredicates.h - PPC Branch Predicate Information ------*- C++ -*-===// 267276Sjon// 367276Sjon// The LLVM Compiler Infrastructure 467276Sjon// 567276Sjon// This file is distributed under the University of Illinois Open Source 667276Sjon// License. See LICENSE.TXT for details. 767276Sjon// 867276Sjon//===----------------------------------------------------------------------===// 9140198Simp// 1067276Sjon// This file describes the PowerPC branch predicates. 11140198Simp// 12140198Simp//===----------------------------------------------------------------------===// 1367276Sjon 1467276Sjon#ifndef LLVM_TARGET_POWERPC_PPCPREDICATES_H 1567276Sjon#define LLVM_TARGET_POWERPC_PPCPREDICATES_H 1667276Sjon 17140198Simp// GCC #defines PPC on Linux but we use it as our namespace name 18140198Simp#undef PPC 1967276Sjon 2067276Sjon// Generated files will use "namespace PPC". To avoid symbol clash, 2167276Sjon// undefine PPC here. PPC may be predefined on some hosts. 2267276Sjon#undef PPC 2367276Sjon 2467276Sjonnamespace llvm { 2567276Sjonnamespace PPC { 2667276Sjon /// Predicate - These are "(BI << 5) | BO" for various predicates. 2767276Sjon enum Predicate { 2867276Sjon PRED_LT = (0 << 5) | 12, 2967276Sjon PRED_LE = (1 << 5) | 4, 3067276Sjon PRED_EQ = (2 << 5) | 12, 3167276Sjon PRED_GE = (0 << 5) | 4, 32141412Simp PRED_GT = (1 << 5) | 12, 3367276Sjon PRED_NE = (2 << 5) | 4, 3470715Sjon PRED_UN = (3 << 5) | 12, 3570715Sjon PRED_NU = (3 << 5) | 4, 3682375Sjon PRED_LT_MINUS = (0 << 5) | 14, 3767276Sjon PRED_LE_MINUS = (1 << 5) | 6, 3867276Sjon PRED_EQ_MINUS = (2 << 5) | 14, 3982375Sjon PRED_GE_MINUS = (0 << 5) | 6, 4082375Sjon PRED_GT_MINUS = (1 << 5) | 14, 4182378Sjon PRED_NE_MINUS = (2 << 5) | 6, 4282378Sjon PRED_UN_MINUS = (3 << 5) | 14, 4382378Sjon PRED_NU_MINUS = (3 << 5) | 6, 4482378Sjon PRED_LT_PLUS = (0 << 5) | 15, 45 PRED_LE_PLUS = (1 << 5) | 7, 46 PRED_EQ_PLUS = (2 << 5) | 15, 47 PRED_GE_PLUS = (0 << 5) | 7, 48 PRED_GT_PLUS = (1 << 5) | 15, 49 PRED_NE_PLUS = (2 << 5) | 7, 50 PRED_UN_PLUS = (3 << 5) | 15, 51 PRED_NU_PLUS = (3 << 5) | 7 52 }; 53 54 /// Invert the specified predicate. != -> ==, < -> >=. 55 Predicate InvertPredicate(Predicate Opcode); 56 57 /// Assume the condition register is set by MI(a,b), return the predicate if 58 /// we modify the instructions such that condition register is set by MI(b,a). 59 Predicate getSwappedPredicate(Predicate Opcode); 60} 61} 62 63#endif 64