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R600: Make dot_4 instructions predicable

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194927 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Vincent Lejeune 2013-11-16 16:24:41 +00:00
parent 0fb32eb56a
commit 4110797853
2 changed files with 46 additions and 0 deletions
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19
lib/Target/R600/R600InstrInfo.cpp
View File

@ -1009,6 +1009,20 @@ R600InstrInfo::PredicateInstruction(MachineInstr *MI,
return true;
}
if (MI->getOpcode() == AMDGPU::DOT_4) {
MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_X))
.setReg(Pred[2].getReg());
MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_Y))
.setReg(Pred[2].getReg());
MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_Z))
.setReg(Pred[2].getReg());
MI->getOperand(getOperandIdx(*MI, AMDGPU::OpName::pred_sel_W))
.setReg(Pred[2].getReg());
MachineInstrBuilder MIB(*MI->getParent()->getParent(), MI);
MIB.addReg(AMDGPU::PREDICATE_BIT, RegState::Implicit);
return true;
}
if (PIdx != -1) {
MachineOperand &PMO = MI->getOperand(PIdx);
PMO.setReg(Pred[2].getReg());
@ -1217,6 +1231,11 @@ MachineInstr *R600InstrInfo::buildSlotOfVectorInstruction(
AMDGPU::OpName::src1_sel,
};
MachineOperand &MO = MI->getOperand(getOperandIdx(MI->getOpcode(),
getSlotedOps(AMDGPU::OpName::pred_sel, Slot)));
MIB->getOperand(getOperandIdx(Opcode, AMDGPU::OpName::pred_sel))
.setReg(MO.getReg());
for (unsigned i = 0; i < 14; i++) {
MachineOperand &MO = MI->getOperand(
getOperandIdx(MI->getOpcode(), getSlotedOps(Operands[i], Slot)));

27
test/CodeGen/R600/predicate-dp4.ll Normal file
View File

@ -0,0 +1,27 @@
;RUN: llc < %s -march=r600 -mcpu=cayman
; CHECK-LABEL: @main
; CHECK: PRED_SETE_INT * Pred,
; CHECK: DOT4 T{{[0-9]+}}.X, T0.X, T0.X, Pred_sel_one
define void @main(<4 x float> inreg) #0 {
main_body:
%1 = extractelement <4 x float> %0, i32 0
%2 = bitcast float %1 to i32
%3 = icmp eq i32 %2, 0
br i1 %3, label %IF, label %ENDIF
IF: ; preds = %main_body
%4 = call float @llvm.AMDGPU.dp4(<4 x float> %0, <4 x float> %0)
br label %ENDIF
ENDIF: ; preds = %IF, %main_body
%5 = phi float [%4, %IF], [0.000000e+00, %main_body]
%6 = insertelement <4 x float> undef, float %5, i32 0
call void @llvm.R600.store.swizzle(<4 x float> %6, i32 0, i32 0)
ret void
}
declare float @llvm.AMDGPU.dp4(<4 x float>, <4 x float>) #1
declare void @llvm.R600.store.swizzle(<4 x float>, i32, i32)
attributes #1 = { readnone }
attributes #0 = { "ShaderType"="0" }