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

[Tex Riddell via cfe-commits]

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@@ -0,0 +1,50 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; Make sure lowering is correctly generating spirv code.
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tex3d wrote:

This just tests SPIR-V lowering of the code you expect to generate from the HLSL.  It doesn't actually test that the `CGBuiltin.cpp` code generates this IR for the SPIR-V path.  I think we are missing a test for that.

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