1 //==- SystemZ.h - Top-Level Interface for SystemZ representation -*- C++ -*-==// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file contains the entry points for global functions defined in 11 // the LLVM SystemZ backend. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef SYSTEMZ_H 16 #define SYSTEMZ_H 17 18 #include "MCTargetDesc/SystemZMCTargetDesc.h" 19 #include "llvm/Support/CodeGen.h" 20 21 namespace llvm { 22 class SystemZTargetMachine; 23 class FunctionPass; 24 25 namespace SystemZ { 26 // Condition-code mask values. 27 const unsigned CCMASK_0 = 1 << 3; 28 const unsigned CCMASK_1 = 1 << 2; 29 const unsigned CCMASK_2 = 1 << 1; 30 const unsigned CCMASK_3 = 1 << 0; 31 const unsigned CCMASK_ANY = CCMASK_0 | CCMASK_1 | CCMASK_2 | CCMASK_3; 32 33 // Condition-code mask assignments for integer and floating-point 34 // comparisons. 35 const unsigned CCMASK_CMP_EQ = CCMASK_0; 36 const unsigned CCMASK_CMP_LT = CCMASK_1; 37 const unsigned CCMASK_CMP_GT = CCMASK_2; 38 const unsigned CCMASK_CMP_NE = CCMASK_CMP_LT | CCMASK_CMP_GT; 39 const unsigned CCMASK_CMP_LE = CCMASK_CMP_EQ | CCMASK_CMP_LT; 40 const unsigned CCMASK_CMP_GE = CCMASK_CMP_EQ | CCMASK_CMP_GT; 41 42 // Condition-code mask assignments for floating-point comparisons only. 43 const unsigned CCMASK_CMP_UO = CCMASK_3; 44 const unsigned CCMASK_CMP_O = CCMASK_ANY ^ CCMASK_CMP_UO; 45 46 // All condition-code values produced by comparisons. 47 const unsigned CCMASK_ICMP = CCMASK_0 | CCMASK_1 | CCMASK_2; 48 const unsigned CCMASK_FCMP = CCMASK_0 | CCMASK_1 | CCMASK_2 | CCMASK_3; 49 50 // Condition-code mask assignments for CS. 51 const unsigned CCMASK_CS_EQ = CCMASK_0; 52 const unsigned CCMASK_CS_NE = CCMASK_1; 53 const unsigned CCMASK_CS = CCMASK_0 | CCMASK_1; 54 55 // Return true if Val fits an LLILL operand. isImmLL(uint64_t Val)56 static inline bool isImmLL(uint64_t Val) { 57 return (Val & ~0x000000000000ffffULL) == 0; 58 } 59 60 // Return true if Val fits an LLILH operand. isImmLH(uint64_t Val)61 static inline bool isImmLH(uint64_t Val) { 62 return (Val & ~0x00000000ffff0000ULL) == 0; 63 } 64 65 // Return true if Val fits an LLIHL operand. isImmHL(uint64_t Val)66 static inline bool isImmHL(uint64_t Val) { 67 return (Val & ~0x00000ffff00000000ULL) == 0; 68 } 69 70 // Return true if Val fits an LLIHH operand. isImmHH(uint64_t Val)71 static inline bool isImmHH(uint64_t Val) { 72 return (Val & ~0xffff000000000000ULL) == 0; 73 } 74 75 // Return true if Val fits an LLILF operand. isImmLF(uint64_t Val)76 static inline bool isImmLF(uint64_t Val) { 77 return (Val & ~0x00000000ffffffffULL) == 0; 78 } 79 80 // Return true if Val fits an LLIHF operand. isImmHF(uint64_t Val)81 static inline bool isImmHF(uint64_t Val) { 82 return (Val & ~0xffffffff00000000ULL) == 0; 83 } 84 } 85 86 FunctionPass *createSystemZISelDag(SystemZTargetMachine &TM, 87 CodeGenOpt::Level OptLevel); 88 FunctionPass *createSystemZElimComparePass(SystemZTargetMachine &TM); 89 FunctionPass *createSystemZLongBranchPass(SystemZTargetMachine &TM); 90 } // end namespace llvm; 91 #endif 92