| //==- SystemZ.h - Top-Level Interface for SystemZ representation -*- C++ -*-==// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file contains the entry points for global functions defined in |
| // the LLVM SystemZ backend. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZ_H |
| #define LLVM_LIB_TARGET_SYSTEMZ_SYSTEMZ_H |
| |
| #include "MCTargetDesc/SystemZMCTargetDesc.h" |
| #include "llvm/Support/CodeGen.h" |
| |
| namespace llvm { |
| class SystemZTargetMachine; |
| class FunctionPass; |
| |
| namespace SystemZ { |
| // Condition-code mask values. |
| const unsigned CCMASK_0 = 1 << 3; |
| const unsigned CCMASK_1 = 1 << 2; |
| const unsigned CCMASK_2 = 1 << 1; |
| const unsigned CCMASK_3 = 1 << 0; |
| const unsigned CCMASK_ANY = CCMASK_0 | CCMASK_1 | CCMASK_2 | CCMASK_3; |
| |
| // Condition-code mask assignments for integer and floating-point |
| // comparisons. |
| const unsigned CCMASK_CMP_EQ = CCMASK_0; |
| const unsigned CCMASK_CMP_LT = CCMASK_1; |
| const unsigned CCMASK_CMP_GT = CCMASK_2; |
| const unsigned CCMASK_CMP_NE = CCMASK_CMP_LT | CCMASK_CMP_GT; |
| const unsigned CCMASK_CMP_LE = CCMASK_CMP_EQ | CCMASK_CMP_LT; |
| const unsigned CCMASK_CMP_GE = CCMASK_CMP_EQ | CCMASK_CMP_GT; |
| |
| // Condition-code mask assignments for floating-point comparisons only. |
| const unsigned CCMASK_CMP_UO = CCMASK_3; |
| const unsigned CCMASK_CMP_O = CCMASK_ANY ^ CCMASK_CMP_UO; |
| |
| // All condition-code values produced by comparisons. |
| const unsigned CCMASK_ICMP = CCMASK_0 | CCMASK_1 | CCMASK_2; |
| const unsigned CCMASK_FCMP = CCMASK_0 | CCMASK_1 | CCMASK_2 | CCMASK_3; |
| |
| // Condition-code mask assignments for CS. |
| const unsigned CCMASK_CS_EQ = CCMASK_0; |
| const unsigned CCMASK_CS_NE = CCMASK_1; |
| const unsigned CCMASK_CS = CCMASK_0 | CCMASK_1; |
| |
| // Condition-code mask assignments for a completed SRST loop. |
| const unsigned CCMASK_SRST_FOUND = CCMASK_1; |
| const unsigned CCMASK_SRST_NOTFOUND = CCMASK_2; |
| const unsigned CCMASK_SRST = CCMASK_1 | CCMASK_2; |
| |
| // Condition-code mask assignments for TEST UNDER MASK. |
| const unsigned CCMASK_TM_ALL_0 = CCMASK_0; |
| const unsigned CCMASK_TM_MIXED_MSB_0 = CCMASK_1; |
| const unsigned CCMASK_TM_MIXED_MSB_1 = CCMASK_2; |
| const unsigned CCMASK_TM_ALL_1 = CCMASK_3; |
| const unsigned CCMASK_TM_SOME_0 = CCMASK_TM_ALL_1 ^ CCMASK_ANY; |
| const unsigned CCMASK_TM_SOME_1 = CCMASK_TM_ALL_0 ^ CCMASK_ANY; |
| const unsigned CCMASK_TM_MSB_0 = CCMASK_0 | CCMASK_1; |
| const unsigned CCMASK_TM_MSB_1 = CCMASK_2 | CCMASK_3; |
| const unsigned CCMASK_TM = CCMASK_ANY; |
| |
| // The position of the low CC bit in an IPM result. |
| const unsigned IPM_CC = 28; |
| |
| // Mask assignments for PFD. |
| const unsigned PFD_READ = 1; |
| const unsigned PFD_WRITE = 2; |
| |
| // Return true if Val fits an LLILL operand. |
| static inline bool isImmLL(uint64_t Val) { |
| return (Val & ~0x000000000000ffffULL) == 0; |
| } |
| |
| // Return true if Val fits an LLILH operand. |
| static inline bool isImmLH(uint64_t Val) { |
| return (Val & ~0x00000000ffff0000ULL) == 0; |
| } |
| |
| // Return true if Val fits an LLIHL operand. |
| static inline bool isImmHL(uint64_t Val) { |
| return (Val & ~0x00000ffff00000000ULL) == 0; |
| } |
| |
| // Return true if Val fits an LLIHH operand. |
| static inline bool isImmHH(uint64_t Val) { |
| return (Val & ~0xffff000000000000ULL) == 0; |
| } |
| |
| // Return true if Val fits an LLILF operand. |
| static inline bool isImmLF(uint64_t Val) { |
| return (Val & ~0x00000000ffffffffULL) == 0; |
| } |
| |
| // Return true if Val fits an LLIHF operand. |
| static inline bool isImmHF(uint64_t Val) { |
| return (Val & ~0xffffffff00000000ULL) == 0; |
| } |
| } // end namespace SystemZ |
| |
| FunctionPass *createSystemZISelDag(SystemZTargetMachine &TM, |
| CodeGenOpt::Level OptLevel); |
| FunctionPass *createSystemZElimComparePass(SystemZTargetMachine &TM); |
| FunctionPass *createSystemZShortenInstPass(SystemZTargetMachine &TM); |
| FunctionPass *createSystemZLongBranchPass(SystemZTargetMachine &TM); |
| } // end namespace llvm |
| |
| #endif |