diff options
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/SIFoldOperands.cpp | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp index 2ebcbae90bb..f5e60819f30 100644 --- a/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp +++ b/llvm/lib/Target/AMDGPU/SIFoldOperands.cpp @@ -189,15 +189,24 @@ static bool updateOperand(FoldCandidate &Fold, unsigned Val = Mod.getImm(); if ((Val & SISrcMods::OP_SEL_0) || !(Val & SISrcMods::OP_SEL_1)) return false; - // If upper part is all zero we do not need op_sel_hi. - if (!isUInt<16>(Fold.ImmToFold)) { - if (!(Fold.ImmToFold & 0xffff)) { - Mod.setImm(Mod.getImm() | SISrcMods::OP_SEL_0); + // Only apply the following transformation if that operand requries + // a packed immediate. + switch (TII.get(Opcode).OpInfo[OpNo].OperandType) { + case AMDGPU::OPERAND_REG_INLINE_C_V2FP16: + case AMDGPU::OPERAND_REG_INLINE_C_V2INT16: + // If upper part is all zero we do not need op_sel_hi. + if (!isUInt<16>(Fold.ImmToFold)) { + if (!(Fold.ImmToFold & 0xffff)) { + Mod.setImm(Mod.getImm() | SISrcMods::OP_SEL_0); + Mod.setImm(Mod.getImm() & ~SISrcMods::OP_SEL_1); + Old.ChangeToImmediate((Fold.ImmToFold >> 16) & 0xffff); + return true; + } Mod.setImm(Mod.getImm() & ~SISrcMods::OP_SEL_1); - Old.ChangeToImmediate((Fold.ImmToFold >> 16) & 0xffff); - return true; } - Mod.setImm(Mod.getImm() & ~SISrcMods::OP_SEL_1); + break; + default: + break; } } |
