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Implemented a MED3_S32 GIR opcode.

This commit is contained in:
Thomas Symalla 2021-01-18 16:05:00 +01:00
parent 6604d81e1b
commit c781c25412
4 changed files with 15 additions and 2 deletions
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1
llvm/lib/Target/AMDGPU/AMDGPUGISel.td
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@ -175,6 +175,7 @@ def : GINodeEquiv<G_AMDGPU_CVT_F32_UBYTE2, AMDGPUcvt_f32_ubyte2>;
def : GINodeEquiv<G_AMDGPU_CVT_F32_UBYTE3, AMDGPUcvt_f32_ubyte3>;
def : GINodeEquiv<G_AMDGPU_CVT_PK_I16_I32, AMDGPUpk_i16_i32_impl>;
def : GINodeEquiv<G_AMDGPU_MED3_S32, AMDGPUsmed3>;
def : GINodeEquiv<G_AMDGPU_ATOMIC_CMPXCHG, AMDGPUatomic_cmp_swap>;
def : GINodeEquiv<G_AMDGPU_BUFFER_LOAD, SIbuffer_load>;

9
llvm/lib/Target/AMDGPU/AMDGPUPreLegalizerCombiner.cpp
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@ -152,9 +152,14 @@ void AMDGPUPreLegalizerCombinerHelper::applyClampI64ToI16(
Register MedDst = MRI.createVirtualRegister(&AMDGPU::VGPR_32RegClass);
MRI.setType(MedDst, S32);
B.buildInstr(AMDGPU::V_MED3_I32,
Register CvtDst32 = MRI.createVirtualRegister(&AMDGPU::VGPR_32RegClass);
MRI.setType(CvtDst32, S32);
B.buildBitcast(CvtDst32, CvtDst);
B.buildInstr(AMDGPU::G_AMDGPU_MED3_S32,
{MedDst},
{MinBoundaryDst.getReg(0), CvtDst, MaxBoundaryDst.getReg(0)},
{MinBoundaryDst.getReg(0), CvtDst32, MaxBoundaryDst.getReg(0)},
MI.getFlags());
Register TruncDst = MRI.createGenericVirtualRegister(LLT::scalar(16));

1
llvm/lib/Target/AMDGPU/AMDGPURegisterBankInfo.cpp
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@ -3622,6 +3622,7 @@ AMDGPURegisterBankInfo::getInstrMapping(const MachineInstr &MI) const {
case AMDGPU::G_AMDGPU_CVT_F32_UBYTE2:
case AMDGPU::G_AMDGPU_CVT_F32_UBYTE3:
case AMDGPU::G_AMDGPU_CVT_PK_I16_I32:
case AMDGPU::G_AMDGPU_MED3_S32:
return getDefaultMappingVOP(MI);
case AMDGPU::G_UMULH:
case AMDGPU::G_SMULH: {

6
llvm/lib/Target/AMDGPU/SIInstructions.td
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@ -2581,6 +2581,12 @@ def G_AMDGPU_CVT_PK_I16_I32 : AMDGPUGenericInstruction {
let hasSideEffects = 0;
}
def G_AMDGPU_MED3_S32 : AMDGPUGenericInstruction {
let OutOperandList = (outs type0:$dst);
let InOperandList = (ins type0:$src0, type0:$src1, type0:$src2);
let hasSideEffects = 0;
}
// Atomic cmpxchg. $cmpval ad $newval are packed in a single vector
// operand Expects a MachineMemOperand in addition to explicit
// operands.