diff options
| -rw-r--r-- | llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h index 688ca755d0b..34b732a1ff4 100644 --- a/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h +++ b/llvm/lib/Target/AArch64/MCTargetDesc/AArch64AddressingModes.h @@ -754,8 +754,12 @@ static inline uint64_t decodeAdvSIMDModImmType12(uint8_t Imm) { /// Returns true if Imm is the concatenation of a repeating pattern of type T. template <typename T> static inline bool isSVEMaskOfIdenticalElements(int64_t Imm) { - auto Parts = bit_cast<std::array<T, sizeof(int64_t) / sizeof(T)>>(Imm); - return all_of(Parts, [&](T Elem) { return Elem == Parts[0]; }); + union { + int64_t Whole; + T Parts[sizeof(int64_t)/sizeof(T)]; + } Vec { Imm }; + + return all_of(Vec.Parts, [Vec](T Elem) { return Elem == Vec.Parts[0]; }); } /// Returns true if Imm is valid for CPY/DUP. @@ -783,20 +787,29 @@ static inline bool isSVEAddSubImm(int64_t Imm) { /// Return true if Imm is valid for DUPM and has no single CPY/DUP equivalent. static inline bool isSVEMoveMaskPreferredLogicalImmediate(int64_t Imm) { - if (isSVECpyImm<int64_t>(Imm)) + union { + int64_t D; + int32_t S[2]; + int16_t H[4]; + int8_t B[8]; + } Vec = { Imm }; + + if (isSVECpyImm<int64_t>(Vec.D)) return false; - auto S = bit_cast<std::array<int32_t, 2>>(Imm); - auto H = bit_cast<std::array<int16_t, 4>>(Imm); - auto B = bit_cast<std::array<int8_t, 8>>(Imm); - - if (isSVEMaskOfIdenticalElements<int32_t>(Imm) && isSVECpyImm<int32_t>(S[0])) + if (isSVEMaskOfIdenticalElements<int32_t>(Imm) && + isSVECpyImm<int32_t>(Vec.S[0])) return false; - if (isSVEMaskOfIdenticalElements<int16_t>(Imm) && isSVECpyImm<int16_t>(H[0])) + + if (isSVEMaskOfIdenticalElements<int16_t>(Imm) && + isSVECpyImm<int16_t>(Vec.H[0])) return false; - if (isSVEMaskOfIdenticalElements<int8_t>(Imm) && isSVECpyImm<int8_t>(B[0])) + + if (isSVEMaskOfIdenticalElements<int8_t>(Imm) && + isSVECpyImm<int8_t>(Vec.B[0])) return false; - return isLogicalImmediate(Imm, 64); + + return isLogicalImmediate(Vec.D, 64); } inline static bool isAnyMOVZMovAlias(uint64_t Value, int RegWidth) { |
