[clang] [llvm] [HLSL] Adding HLSL `clip` function. (PR #114588)

[Finn Plummer via cfe-commits]

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@@ -0,0 +1,39 @@
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple dxil-pc-shadermodel6.3-pixel %s -fnative-half-type -emit-llvm -o - | FileCheck %s
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inbelic wrote:

Don't need to specify the filename extension with `-x hlsl`

https://github.com/llvm/llvm-project/pull/114588