================
@@ -99,6 +99,42 @@ static void initializeAlloca(CodeGenFunction &CGF,
AllocaInst *AI, Value *Size,
I->addAnnotationMetadata("auto-init");
}
+static Value *handleHlslClip(const CallExpr *E, CodeGenFunction *CGF) {
+ Value *Op0 = CGF->EmitScalarExpr(E->getArg(0));
+
+ Constant *FZeroConst = ConstantFP::getZero(CGF->FloatTy);
+ Value *CMP;
+
+ if (const auto *VecTy = E->getArg(0)->getType()->getAs<clang::VectorType>())
{
+ FZeroConst = ConstantVector::getSplat(
+ ElementCount::getFixed(VecTy->getNumElements()), FZeroConst);
+ auto *FCompInst = CGF->Builder.CreateFCmpOLT(Op0, FZeroConst);
+ CMP = CGF->Builder.CreateIntrinsic(
+ CGF->Builder.getInt1Ty(), CGF->CGM.getHLSLRuntime().getAnyIntrinsic(),
+ {FCompInst}, nullptr);
+ } else
+ CMP = CGF->Builder.CreateFCmpOLT(Op0, FZeroConst);
+
+ if (CGF->CGM.getTarget().getTriple().isDXIL())
+ return CGF->Builder.CreateIntrinsic(CGF->VoidTy, llvm::Intrinsic::dx_clip,
----------------
farzonl wrote:
For SPIRV I beleive you could just invoke `selectAny` in
`llvm/lib/Target/SPIRV/SPIRVInstructionSelector.cpp`. Also not saying this has
to change. But I want to be conservative with adding new patterns unless there
is a good reason to do so.
https://github.com/llvm/llvm-project/pull/114588
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