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some performance fix. it works, but have no idea why. checkpoint

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Evghenii
2014-02-05 15:36:06 +01:00
parent 686c1d676d
commit aeb2f01a15
1 changed files with 12 additions and 2 deletions
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14
ctx.cpp
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@@ -1451,10 +1451,19 @@ FunctionEmitContext::Extract(llvm::Value *vector, llvm::Value *lane)
llvm::Value *
FunctionEmitContext::MasksAllEqual(llvm::Value *v1, llvm::Value *v2) {
if (g->target->getISA() == Target::NVPTX)
{
// Compare the two masks to get a vector of i1s
llvm::Value *cmp = CmpInst(llvm::Instruction::ICmp, llvm::CmpInst::ICMP_EQ,
v1, v2, "v1==v2");
return ExtractInst(cmp, 0); /* this works without calling All(..) in PTX. Why ?!? */
}
else
{
#if 0
// Compare the two masks to get a vector of i1s
llvm::Value *cmp = CmpInst(llvm::Instruction::ICmp, llvm::CmpInst::ICMP_EQ,
v1, v2, "v1==v2");
v1, v2, "v1==v2");
// Turn that into a bool vector type (often i32s)
cmp = I1VecToBoolVec(cmp);
// And see if it's all on
@@ -1463,8 +1472,9 @@ FunctionEmitContext::MasksAllEqual(llvm::Value *v1, llvm::Value *v2) {
llvm::Value *mm1 = LaneMask(v1);
llvm::Value *mm2 = LaneMask(v2);
return CmpInst(llvm::Instruction::ICmp, llvm::CmpInst::ICMP_EQ, mm1, mm2,
LLVMGetName("equal", v1, v2));
LLVMGetName("equal", v1, v2));
#endif
}
}
llvm::Value *