[clang] [llvm] Add normalize builtins and normalize HLSL function to DirectX and SPIR-V backend (PR #102683)

[Farzon Lotfi via cfe-commits]

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@@ -0,0 +1,118 @@
+; RUN: opt -S  -dxil-intrinsic-expansion  < %s | FileCheck %s --check-prefixes=CHECK,EXPCHECK
+; RUN: opt -S  -dxil-op-lower -mtriple=dxil-pc-shadermodel6.3-library < %s | FileCheck %s --check-prefixes=CHECK,DOPCHECK
+
+; Make sure dxil operation function calls for normalize are generated for half/float.
+
+declare half @llvm.dx.normalize.f16(half)
+declare <2 x half> @llvm.dx.normalize.v2f16(<2 x half>)
+declare <3 x half> @llvm.dx.normalize.v3f16(<3 x half>)
+declare <4 x half> @llvm.dx.normalize.v4f16(<4 x half>)
+
+declare float @llvm.dx.normalize.f32(float)
+declare <2 x float> @llvm.dx.normalize.v2f32(<2 x float>)
+declare <3 x float> @llvm.dx.normalize.v3f32(<3 x float>)
+declare <4 x float> @llvm.dx.normalize.v4f32(<4 x float>)
+
+define noundef half @test_normalize_half(half noundef %p0) {
+entry:
+  ; CHECK: fdiv half %p0, %p0
+  %hlsl.normalize = call half @llvm.dx.normalize.f16(half %p0)
+  ret half %hlsl.normalize
+}
+
+define noundef <2 x half> @test_normalize_half2(<2 x half> noundef %p0) {
+entry:
+  ; CHECK: extractelement <2 x half> %{{.*}}, i64 0
+  ; EXPCHECK: call half @llvm.dx.dot2.v2f16(<2 x half> %{{.*}}, <2 x half> %{{.*}})
+  ; DOPCHECK: call half @dx.op.dot2.f16(i32 54, half %{{.*}}, half %{{.*}}, half %{{.*}}, half %{{.*}})
+  ; EXPCHECK: call half @llvm.dx.rsqrt.f16(half %{{.*}})
+  ; DOPCHECK: call half @dx.op.unary.f16(i32 25, half %{{.*}})
+  ; CHECK: insertelement <2 x half> poison, half %{{.*}}, i64 0
+  ; CHECK: shufflevector <2 x half> %{{.*}}, <2 x half> poison, <2 x i32> zeroinitializer
+  ; CHECK: fmul <2 x half> %{{.*}}, %{{.*}}  
+
+  %hlsl.normalize = call <2 x half> @llvm.dx.normalize.v2f16(<2 x half> %p0)
+  ret <2 x half> %hlsl.normalize
+}
+
+define noundef <3 x half> @test_normalize_half3(<3 x half> noundef %p0) {
+entry:
+  ; CHECK: extractelement <3 x half> %{{.*}}, i64 0
+  ; EXPCHECK: call half @llvm.dx.dot3.v3f16(<3 x half> %{{.*}}, <3 x half> %{{.*}})
+  ; DOPCHECK: call half @dx.op.dot3.f16(i32 55, half %{{.*}}, half %{{.*}}, half %{{.*}}, half %{{.*}})
+  ; EXPCHECK: call half @llvm.dx.rsqrt.f16(half %{{.*}})
+  ; DOPCHECK: call half @dx.op.unary.f16(i32 25, half %{{.*}})
+  ; CHECK: insertelement <3 x half> poison, half %{{.*}}, i64 0
+  ; CHECK: shufflevector <3 x half> %{{.*}}, <3 x half> poison, <3 x i32> zeroinitializer
+  ; CHECK: fmul <3 x half> %{{.*}}, %{{.*}}
+
+  %hlsl.normalize = call <3 x half> @llvm.dx.normalize.v3f16(<3 x half> %p0)
+  ret <3 x half> %hlsl.normalize
+}
+
+define noundef <4 x half> @test_normalize_half4(<4 x half> noundef %p0) {
+entry:
+  ; CHECK: extractelement <4 x half> %{{.*}}, i64 0
+  ; EXPCHECK: call half @llvm.dx.dot4.v4f16(<4 x half> %{{.*}}, <4 x half> %{{.*}})
+  ; DOPCHECK: call half @dx.op.dot4.f16(i32 56, half %{{.*}}, half %{{.*}}, half %{{.*}}, half %{{.*}})
+  ; EXPCHECK: call half @llvm.dx.rsqrt.f16(half %{{.*}})
+  ; DOPCHECK: call half @dx.op.unary.f16(i32 25, half %{{.*}})
+  ; CHECK: insertelement <4 x half> poison, half %{{.*}}, i64 0
+  ; CHECK: shufflevector <4 x half> %{{.*}}, <4 x half> poison, <4 x i32> zeroinitializer
+  ; CHECK: fmul <4 x half> %{{.*}}, %{{.*}}
+
+  %hlsl.normalize = call <4 x half> @llvm.dx.normalize.v4f16(<4 x half> %p0)
+  ret <4 x half> %hlsl.normalize
+}
+
+define noundef float @test_normalize_float(float noundef %p0) {
+entry:
+  ; CHECK: fdiv float %p0, %p0
+  %hlsl.normalize = call float @llvm.dx.normalize.f32(float %p0)
+  ret float %hlsl.normalize
+}
+
+define noundef <2 x float> @test_normalize_float2(<2 x float> noundef %p0) {
+entry:
+  ; CHECK: extractelement <2 x float> %{{.*}}, i64 0
+  ; EXPCHECK: call float @llvm.dx.dot2.v2f32(<2 x float> %{{.*}}, <2 x float> %{{.*}})
+  ; DOPCHECK: call float @dx.op.dot2.f32(i32 54, float %{{.*}}, float %{{.*}}, float %{{.*}}, float %{{.*}})
+  ; EXPCHECK: call float @llvm.dx.rsqrt.f32(float %{{.*}})
+  ; DOPCHECK: call float @dx.op.unary.f32(i32 25, float %{{.*}})
+  ; CHECK: insertelement <2 x float> poison, float %{{.*}}, i64 0
+  ; CHECK: shufflevector <2 x float> %{{.*}}, <2 x float> poison, <2 x i32> zeroinitializer
+  ; CHECK: fmul <2 x float> %{{.*}}, %{{.*}}
+
+  %hlsl.normalize = call <2 x float> @llvm.dx.normalize.v2f32(<2 x float> %p0)
+  ret <2 x float> %hlsl.normalize
+}
+
+define noundef <3 x float> @test_normalize_float3(<3 x float> noundef %p0) {
+entry:
+  ; CHECK: extractelement <3 x float> %{{.*}}, i64 0
+  ; EXPCHECK: call float @llvm.dx.dot3.v3f32(<3 x float> %{{.*}}, <3 x float> %{{.*}})
+  ; DOPCHECK: call float @dx.op.dot3.f32(i32 55, float %{{.*}}, float %{{.*}}, float %{{.*}}, float %{{.*}})
+  ; EXPCHECK: call float @llvm.dx.rsqrt.f32(float %{{.*}})
+  ; DOPCHECK: call float @dx.op.unary.f32(i32 25, float %{{.*}})
+  ; CHECK: insertelement <3 x float> poison, float %{{.*}}, i64 0
+  ; CHECK: shufflevector <3 x float> %{{.*}}, <3 x float> poison, <3 x i32> zeroinitializer
+  ; CHECK: fmul <3 x float> %{{.*}}, %{{.*}}
+
+  %hlsl.normalize = call <3 x float> @llvm.dx.normalize.v3f32(<3 x float> %p0)
+  ret <3 x float> %hlsl.normalize
+}
+
+define noundef <4 x float> @test_normalize_float4(<4 x float> noundef %p0) {
+entry:
+  ; CHECK: extractelement <4 x float> %{{.*}}, i64 0
+  ; EXPCHECK: call float @llvm.dx.dot4.v4f32(<4 x float> %{{.*}}, <4 x float> %{{.*}})
+  ; DOPCHECK: call float @dx.op.dot4.f32(i32 56, float %{{.*}}, float %{{.*}}, float %{{.*}}, float %{{.*}})
+  ; EXPCHECK: call float @llvm.dx.rsqrt.f32(float %{{.*}})
+  ; DOPCHECK: call float @dx.op.unary.f32(i32 25, float %{{.*}})
+  ; CHECK: insertelement <4 x float> poison, float %{{.*}}, i64 0
+  ; CHECK: shufflevector <4 x float> %{{.*}}, <4 x float> poison, <4 x i32> zeroinitializer
+  ; CHECK: fmul <4 x float> %{{.*}}, %{{.*}}
+
+  %hlsl.normalize = call <4 x float> @llvm.dx.normalize.v4f32(<4 x float> %p0)
+  ret <4 x float> %hlsl.normalize
+}
----------------
farzonl wrote:

add a new line

https://github.com/llvm/llvm-project/pull/102683