[llvm-branch-commits] [clang] [llvm] [DirectX] Updating Root Signature Metadata to contain Static Sampler flags (PR #160210)

[Justin Bogner via llvm-branch-commits]

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@@ -0,0 +1,42 @@
+; RUN: opt %s -dxil-embed -dxil-globals -S -o - | FileCheck %s
+; RUN: llc %s --filetype=obj -o - | obj2yaml | FileCheck %s --check-prefix=DXC
+
+target triple = "dxil-unknown-shadermodel6.0-compute"
+
+; CHECK: @dx.rts0 = private constant [248 x i8]  c"{{.*}}", section "RTS0", align 4
+
+define void @main() #0 {
+entry:
+  ret void
+}
+attributes #0 = { "hlsl.numthreads"="1,1,1" "hlsl.shader"="compute" }
+
+
+!dx.rootsignatures = !{!2} ; list of function/root signature pairs
+!2 = !{ ptr @main, !3, i32 3 } ; function, root signature
+!3 = !{ !5, !6, !7, !8 } ; list of root signature elements
+!5 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 42, i32 0, i32 0, i32 1 }
+!6 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 43, i32 0, i32 0, i32 2 }
+!7 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 44, i32 0, i32 0, i32 0 }
+!8 = !{ !"StaticSampler", i32 4, i32 2, i32 3, i32 5, float 0x3FF6CCCCC0000000, i32 9, i32 3, i32 2, float -1.280000e+02, float 1.280000e+02, i32 45, i32 0, i32 0, i32 3 }
+
+; DXC: - Name:            RTS0
+; DXC-NEXT:     Size:            248
+; DXC-NEXT:     RootSignature:
+; DXC-NEXT:       Version:         3
+; DXC-NEXT:       NumRootParameters: 0
+; DXC-NEXT:       RootParametersOffset: 24
+; DXC-NEXT:       NumStaticSamplers: 4
+; DXC-NEXT:       StaticSamplersOffset: 24
+; DXC-NEXT:       Parameters:      []
+; DXC-NEXT:       Samplers:
+; DXC-LABEL:         ShaderRegister:  42
----------------
bogner wrote:

`CHECK-LABEL` isn't correct here - that's for dividing checks into logical blocks (ie, you might use it to find the beginning of a function, or something to that effect). Just using a `CHECK` (ie, `DXC: `) would make more sense if we don't want to check every line.

https://github.com/llvm/llvm-project/pull/160210