[clang] [clang][HLSL] Add sign intrinsic part 3 (PR #101989)

[Farzon Lotfi via cfe-commits]

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@@ -0,0 +1,209 @@
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   dxil-pc-shadermodel6.3-library %s -fnative-half-type \
+// RUN:   -emit-llvm -disable-llvm-passes -o - | FileCheck %s \
+// RUN:   --check-prefixes=CHECK,DXIL_CHECK,DXIL_NATIVE_HALF,NATIVE_HALF
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   dxil-pc-shadermodel6.3-library %s -emit-llvm -disable-llvm-passes \
+// RUN:   -o - | FileCheck %s --check-prefixes=CHECK,DXIL_CHECK,NO_HALF,DXIL_NO_HALF
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   spirv-unknown-vulkan-compute %s -fnative-half-type \
+// RUN:   -emit-llvm -disable-llvm-passes -o - | FileCheck %s \
+// RUN:   --check-prefixes=CHECK,SPIR_CHECK,NATIVE_HALF,SPIR_NATIVE_HALF
+// RUN: %clang_cc1 -finclude-default-header -x hlsl -triple \
+// RUN:   spirv-unknown-vulkan-compute %s -emit-llvm -disable-llvm-passes \
+// RUN:   -o - | FileCheck %s --check-prefixes=CHECK,SPIR_CHECK,NO_HALF,SPIR_NO_HALF
+
+// DXIL_NATIVE_HALF: define noundef i32 @
+// SPIR_NATIVE_HALF: define spir_func noundef i32 @
+// DXIL_NATIVE_HALF: %hlsl.sign = call i32 @llvm.dx.sign.f16(
----------------
farzonl wrote:

A change just landed to unify some of the tests you can see that change here: https://github.com/llvm/llvm-project/commit/e99aa4a500b0f271b327432d404a9c1f72c6850a
essentially you want to define a `TARGET` so you don't have to have one line for `dx` and one line for `spv` intrinsics.
example:
```
%hlsl. sign = call half @llvm.[[TARGET]]. sign.f16(
```

https://github.com/llvm/llvm-project/pull/101989