[clang] [llvm] Adding splitdouble HLSL function (PR #109331)

[Tex Riddell via cfe-commits]

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@@ -4681,6 +4601,87 @@ void CallArg::copyInto(CodeGenFunction &CGF, Address Addr) const {
   IsUsed = true;
 }
 
+/// Emit the actual writing-back of a writeback.
+void CodeGenFunction::EmitWriteback(CodeGenFunction &CGF,
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tex3d wrote:

Moving this function makes it hard to tell if it's been modified at the same time.

https://github.com/llvm/llvm-project/pull/109331