[clang] [llvm] [HLSL] Implement the `degrees` intrinsic (PR #111209)

[Greg Roth via cfe-commits]

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@@ -0,0 +1,50 @@
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv64-unknown-unknown %s -o - | FileCheck %s
+; RUN: llc -verify-machineinstrs -O0 -mtriple=spirv32-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv64-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv32-unknown-unknown %s -o - -filetype=obj | spirv-val %}
+
+; CHECK-DAG: %[[#op_ext_glsl:]] = OpExtInstImport "OpenCL.std"
+
+; CHECK-DAG: %[[#float_32:]] = OpTypeFloat 32
+; CHECK-DAG: %[[#float_16:]] = OpTypeFloat 16
+
+; CHECK-DAG: %[[#vec4_float_32:]] = OpTypeVector %[[#float_32]] 4
+; CHECK-DAG: %[[#vec4_float_16:]] = OpTypeVector %[[#float_16]] 4
+
+declare half @llvm.spv.degrees.f16(half)
+declare float @llvm.spv.degrees.f32(float)
+
+declare <4 x float> @llvm.spv.degrees.v4f32(<4 x float>)
+declare <4 x half> @llvm.spv.degrees.v4f16(<4 x half>)
+
+define noundef float @degrees_float(float noundef %a) {
+entry:
+; CHECK: %[[#float_32_arg:]] = OpFunctionParameter %[[#float_32]]
+; CHECK: %[[#]] = OpExtInst %[[#float_32]] %[[#op_ext_glsl]] degrees %[[#float_32_arg]]
+  %elt.degrees = call float @llvm.spv.degrees.f32(float %a)
+  ret float %elt.degrees
+}
+
+define noundef half @degrees_half(half noundef %a) {
+entry:
+; CHECK: %[[#float_16_arg:]] = OpFunctionParameter %[[#float_16]]
+; CHECK: %[[#]] = OpExtInst %[[#float_16]] %[[#op_ext_glsl]] degrees %[[#float_16_arg]]
+  %elt.degrees = call half @llvm.spv.degrees.f16(half %a)
+  ret half %elt.degrees
+}
+
+define noundef <4 x float> @degrees_float_vector(<4 x float> noundef %a) {
+entry:
+; CHECK: %[[#vec4_float_32_arg:]] = OpFunctionParameter %[[#vec4_float_32]]
+; CHECK: %[[#]] = OpExtInst %[[#vec4_float_32]] %[[#op_ext_glsl]] degrees %[[#vec4_float_32_arg]]
+  %elt.degrees = call <4 x float> @llvm.spv.degrees.v4f32(<4 x float> %a)
+  ret <4 x float> %elt.degrees
+}
+
+define noundef <4 x half> @degrees_half_vector(<4 x half> noundef %a) {
+entry:
+; CHECK: %[[#vec4_float_16_arg:]] = OpFunctionParameter %[[#vec4_float_16]]
+; CHECK: %[[#]] = OpExtInst %[[#vec4_float_16]] %[[#op_ext_glsl]] degrees %[[#vec4_float_16_arg]]
+  %elt.degrees = call <4 x half> @llvm.spv.degrees.v4f16(<4 x half> %a)
+  ret <4 x half> %elt.degrees
+}
----------------
pow2clk wrote:

Per conversation with @farzonl, I'm fine with accepting, but not requiring such tests. 

https://github.com/llvm/llvm-project/pull/111209