[clang] [llvm] [HLSL][DXIL] Implement `refract` intrinsic (PR #136026)

[Farzon Lotfi via cfe-commits]

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@@ -0,0 +1,356 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 5
+// RUN: %clang_cc1 -finclude-default-header -triple \
+// RUN:   dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN:   -emit-llvm -O1 -o - | FileCheck %s
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farzonl wrote:

We don't want to use `O1` for these tests. Also don't use `utils/update_cc_test_checks.py` your checking for stuff that isn't relevant to the alrgorithm.

https://github.com/llvm/llvm-project/pull/136026