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authorJoao Saffran <joaosaffranllvm@gmail.com>2025-09-25 17:57:31 -0700
committerJoao Saffran <joaosaffranllvm@gmail.com>2025-09-25 17:57:31 -0700
commitefcd87383068e58130656536bb9f67f1320d4972 (patch)
treec04df0c52d88ef32d4a2354874b8e0fc65c8f68e
parent73e6bb53cf5d71b3cf0f4914207782d7636af0f5 (diff)
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-rw-r--r--llvm/include/llvm/Frontend/HLSL/RootSignatureValidations.h3
-rw-r--r--llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp3
-rw-r--r--llvm/lib/Frontend/HLSL/RootSignatureValidations.cpp8
-rw-r--r--llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Flag.ll19
4 files changed, 8 insertions, 25 deletions
diff --git a/llvm/include/llvm/Frontend/HLSL/RootSignatureValidations.h b/llvm/include/llvm/Frontend/HLSL/RootSignatureValidations.h
index 46a6e6e..64a8061b 100644
--- a/llvm/include/llvm/Frontend/HLSL/RootSignatureValidations.h
+++ b/llvm/include/llvm/Frontend/HLSL/RootSignatureValidations.h
@@ -33,8 +33,7 @@ LLVM_ABI bool verifyRangeType(uint32_t Type);
LLVM_ABI bool verifyDescriptorRangeFlag(uint32_t Version,
dxil::ResourceClass Type,
dxbc::DescriptorRangeFlags FlagsVal);
-LLVM_ABI bool verifyStaticSamplerFlags(uint32_t Version,
- dxbc::StaticSamplerFlags Flags);
+LLVM_ABI bool verifyStaticSamplerFlags(uint32_t Version, uint32_t FlagsNumber);
LLVM_ABI bool verifyNumDescriptors(uint32_t NumDescriptors);
LLVM_ABI bool verifyMipLODBias(float MipLODBias);
LLVM_ABI bool verifyMaxAnisotropy(uint32_t MaxAnisotropy);
diff --git a/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp b/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
index 4171695..106e496 100644
--- a/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
+++ b/llvm/lib/Frontend/HLSL/RootSignatureMetadata.cpp
@@ -652,8 +652,7 @@ Error MetadataParser::validateRootSignature(
make_error<RootSignatureValidationError<uint32_t>>(
"RegisterSpace", Sampler.RegisterSpace));
- if (!hlsl::rootsig::verifyStaticSamplerFlags(
- RSD.Version, dxbc::StaticSamplerFlags(Sampler.Flags)))
+ if (!hlsl::rootsig::verifyStaticSamplerFlags(RSD.Version, Sampler.Flags))
DeferredErrs =
joinErrors(std::move(DeferredErrs),
make_error<RootSignatureValidationError<uint32_t>>(
diff --git a/llvm/lib/Frontend/HLSL/RootSignatureValidations.cpp b/llvm/lib/Frontend/HLSL/RootSignatureValidations.cpp
index ef10214..07a508d 100644
--- a/llvm/lib/Frontend/HLSL/RootSignatureValidations.cpp
+++ b/llvm/lib/Frontend/HLSL/RootSignatureValidations.cpp
@@ -113,9 +113,13 @@ bool verifyDescriptorRangeFlag(uint32_t Version, dxil::ResourceClass Type,
return (Flags & ~Mask) == FlagT::None;
}
-bool verifyStaticSamplerFlags(uint32_t Version,
- dxbc::StaticSamplerFlags Flags) {
+bool verifyStaticSamplerFlags(uint32_t Version, uint32_t FlagsNumber) {
+ uint32_t LargestValue = llvm::to_underlying(
+ dxbc::StaticSamplerFlags::LLVM_BITMASK_LARGEST_ENUMERATOR);
+ if (FlagsNumber >= NextPowerOf2(LargestValue))
+ return false;
+ dxbc::StaticSamplerFlags Flags = dxbc::StaticSamplerFlags(FlagsNumber);
if (Version <= 2)
return Flags == dxbc::StaticSamplerFlags::None;
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Flag.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Flag.ll
deleted file mode 100644
index fa5bf12..0000000
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-StaticSamplers-Invalid-Flag.ll
+++ /dev/null
@@ -1,19 +0,0 @@
-; RUN: not opt -passes='print<dxil-root-signature>' %s -S -o - 2>&1 | FileCheck %s
-
-
-target triple = "dxil-unknown-shadermodel6.0-compute"
-
-; CHECK: error: Invalid value for ShaderVisibility: 666
-; CHECK-NOT: Root Signature Definitions
-
-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 2 } ; function, root signature
-!3 = !{ !5 } ; 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 666 }