diff options
Diffstat (limited to 'llvm/lib/Target/R600/SIInstrInfo.cpp')
| -rw-r--r-- | llvm/lib/Target/R600/SIInstrInfo.cpp | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/llvm/lib/Target/R600/SIInstrInfo.cpp b/llvm/lib/Target/R600/SIInstrInfo.cpp index 9328c2c2c23..08bfc5e1422 100644 --- a/llvm/lib/Target/R600/SIInstrInfo.cpp +++ b/llvm/lib/Target/R600/SIInstrInfo.cpp @@ -896,10 +896,23 @@ bool SIInstrInfo::areMemAccessesTriviallyDisjoint(MachineInstr *MIa, } bool SIInstrInfo::isInlineConstant(const APInt &Imm) const { - int32_t Val = Imm.getSExtValue(); - if (Val >= -16 && Val <= 64) + int64_t SVal = Imm.getSExtValue(); + if (SVal >= -16 && SVal <= 64) return true; + if (Imm.getBitWidth() == 64) { + uint64_t Val = Imm.getZExtValue(); + return (DoubleToBits(0.0) == Val) || + (DoubleToBits(1.0) == Val) || + (DoubleToBits(-1.0) == Val) || + (DoubleToBits(0.5) == Val) || + (DoubleToBits(-0.5) == Val) || + (DoubleToBits(2.0) == Val) || + (DoubleToBits(-2.0) == Val) || + (DoubleToBits(4.0) == Val) || + (DoubleToBits(-4.0) == Val); + } + // The actual type of the operand does not seem to matter as long // as the bits match one of the inline immediate values. For example: // @@ -908,16 +921,17 @@ bool SIInstrInfo::isInlineConstant(const APInt &Imm) const { // // 1065353216 has the hexadecimal encoding 0x3f800000 which is 1.0f in // floating-point, so it is a legal inline immediate. - - return (APInt::floatToBits(0.0f) == Imm) || - (APInt::floatToBits(1.0f) == Imm) || - (APInt::floatToBits(-1.0f) == Imm) || - (APInt::floatToBits(0.5f) == Imm) || - (APInt::floatToBits(-0.5f) == Imm) || - (APInt::floatToBits(2.0f) == Imm) || - (APInt::floatToBits(-2.0f) == Imm) || - (APInt::floatToBits(4.0f) == Imm) || - (APInt::floatToBits(-4.0f) == Imm); + uint32_t Val = Imm.getZExtValue(); + + return (FloatToBits(0.0f) == Val) || + (FloatToBits(1.0f) == Val) || + (FloatToBits(-1.0f) == Val) || + (FloatToBits(0.5f) == Val) || + (FloatToBits(-0.5f) == Val) || + (FloatToBits(2.0f) == Val) || + (FloatToBits(-2.0f) == Val) || + (FloatToBits(4.0f) == Val) || + (FloatToBits(-4.0f) == Val); } bool SIInstrInfo::isInlineConstant(const MachineOperand &MO) const { |
