================
@@ -264,6 +265,31 @@ class OpLowerer {
return lowerToBindAndAnnotateHandle(F);
}
+ Error replaceSplitDoubleCallUsages(CallInst *Intrin, CallInst *Op) {
+ IRBuilder<> &IRB = OpBuilder.getIRB();
+
+ for (Use &U : make_early_inc_range(Intrin->uses())) {
+ if (auto *EVI = dyn_cast<ExtractValueInst>(U.getUser())) {
+
+ assert(EVI->getNumIndices() == 1 &&
+ "splitdouble result should be indexed individually.");
+ if (EVI->getNumIndices() != 1)
+ return make_error<StringError>(
+ "splitdouble result should be indexed individually.",
+ inconvertibleErrorCode());
+
+ unsigned int IndexVal = EVI->getIndices()[0];
+
+ auto *OpEVI = IRB.CreateExtractValue(Op, IndexVal);
----------------
joaosaffran wrote:
This code here is responsible to replace the return type of DXIL splitdouble
OP, with the correct named type. So it replaces this:
```
%hlsl.splitdouble = call { i32, i32 } @llvm.dx.splitdouble.i32(double %D)
%0 = extractvalue { i32, i32 } %hlsl.splitdouble, 0
%1 = extractvalue { i32, i32 } %hlsl.splitdouble, 1
```
With this:
```
%hlsl.splitdouble = call %dx.types.splitdouble @dx.op.splitDouble.f64(i32
102, double %D)
%0 = extractvalue %dx.types.splitdouble %hlsl.splitdouble, 0
%1 = extractvalue %dx.types.splitdouble %hlsl.splitdouble, 1
```
This is required to keep the Op code call compatible with DXC. @farzonl not
sure if this lowering should be done in `CGBuiltin`. Let me know if you have a
better place to make this change @farzonl
https://github.com/llvm/llvm-project/pull/109331
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