[HLSL] Emit a version in the dx.rootsignatures metadata #145113
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
In llvm#144957 the backend was updated to expect a version in the metadata, but since the frontend wasn't updated this breaks compilation. This is a somewhat temporary fix to that until llvm#144813 lands.
llvmbot
added
clang
|
@llvm/pr-subscribers-clang-codegen @llvm/pr-subscribers-hlsl Author: Justin Bogner (bogner) ChangesIn #144957 the backend was updated to expect a version in the metadata, but since the frontend wasn't updated this breaks compilation. This is a somewhat temporary fix to that until #144813 lands. Full diff: https://github.com/llvm/llvm-project/pull/145113.diff 4 Files Affected:
diff --git a/clang/lib/CodeGen/CGHLSLRuntime.cpp b/clang/lib/CodeGen/CGHLSLRuntime.cpp
index 34960c34e109f..3103f1798e14e 100644
--- a/clang/lib/CodeGen/CGHLSLRuntime.cpp
+++ b/clang/lib/CodeGen/CGHLSLRuntime.cpp
@@ -72,12 +72,17 @@ void addRootSignature(ArrayRef<llvm::hlsl::rootsig::RootElement> Elements,
llvm::hlsl::rootsig::MetadataBuilder Builder(Ctx, Elements);
MDNode *RootSignature = Builder.BuildRootSignature();
- MDNode *FnPairing =
- MDNode::get(Ctx, {ValueAsMetadata::get(Fn), RootSignature});
+
+ // TODO: We need to wire the root signature version up through the frontend
+ // rather than hardcoding it.
+ ConstantAsMetadata *Version =
+ ConstantAsMetadata::get(ConstantInt::get(llvm::Type::getInt32Ty(Ctx), 2));
+ MDNode *MDVals =
+ MDNode::get(Ctx, {ValueAsMetadata::get(Fn), RootSignature, Version});
StringRef RootSignatureValKey = "dx.rootsignatures";
auto *RootSignatureValMD = M.getOrInsertNamedMetadata(RootSignatureValKey);
- RootSignatureValMD->addOperand(FnPairing);
+ RootSignatureValMD->addOperand(MDVals);
}
} // namespace
diff --git a/clang/test/CodeGenHLSL/RootSignature.hlsl b/clang/test/CodeGenHLSL/RootSignature.hlsl
index ca843ffbb1ced..6618ca741aa9d 100644
--- a/clang/test/CodeGenHLSL/RootSignature.hlsl
+++ b/clang/test/CodeGenHLSL/RootSignature.hlsl
@@ -3,14 +3,14 @@
// CHECK: !dx.rootsignatures = !{![[#EMPTY_ENTRY:]], ![[#DT_ENTRY:]],
// CHECK-SAME: ![[#RF_ENTRY:]], ![[#RC_ENTRY:]], ![[#RD_ENTRY:]], ![[#SS_ENTRY:]]}
-// CHECK: ![[#EMPTY_ENTRY]] = !{ptr @EmptyEntry, ![[#EMPTY:]]}
+// CHECK: ![[#EMPTY_ENTRY]] = !{ptr @EmptyEntry, ![[#EMPTY:]], i32 2}
// CHECK: ![[#EMPTY]] = !{}
[shader("compute"), RootSignature("")]
[numthreads(1,1,1)]
void EmptyEntry() {}
-// CHECK: ![[#DT_ENTRY]] = !{ptr @DescriptorTableEntry, ![[#DT_RS:]]}
+// CHECK: ![[#DT_ENTRY]] = !{ptr @DescriptorTableEntry, ![[#DT_RS:]], i32 2}
// CHECK: ![[#DT_RS]] = !{![[#TABLE:]]}
// CHECK: ![[#TABLE]] = !{!"DescriptorTable", i32 0, ![[#CBV:]], ![[#SRV:]]}
// CHECK: ![[#CBV]] = !{!"CBV", i32 1, i32 0, i32 0, i32 -1, i32 4}
@@ -25,7 +25,7 @@ void EmptyEntry() {}
[numthreads(1,1,1)]
void DescriptorTableEntry() {}
-// CHECK: ![[#RF_ENTRY]] = !{ptr @RootFlagsEntry, ![[#RF_RS:]]}
+// CHECK: ![[#RF_ENTRY]] = !{ptr @RootFlagsEntry, ![[#RF_RS:]], i32 2}
// CHECK: ![[#RF_RS]] = !{![[#ROOT_FLAGS:]]}
// CHECK: ![[#ROOT_FLAGS]] = !{!"RootFlags", i32 2114}
@@ -38,7 +38,7 @@ void DescriptorTableEntry() {}
[numthreads(1,1,1)]
void RootFlagsEntry() {}
-// CHECK: ![[#RC_ENTRY]] = !{ptr @RootConstantsEntry, ![[#RC_RS:]]}
+// CHECK: ![[#RC_ENTRY]] = !{ptr @RootConstantsEntry, ![[#RC_RS:]], i32 2}
// CHECK: ![[#RC_RS]] = !{![[#ROOT_CONSTANTS:]]}
// CHECK: ![[#ROOT_CONSTANTS]] = !{!"RootConstants", i32 5, i32 1, i32 2, i32 1}
@@ -52,7 +52,7 @@ void RootFlagsEntry() {}
[numthreads(1,1,1)]
void RootConstantsEntry() {}
-// CHECK: ![[#RD_ENTRY]] = !{ptr @RootDescriptorsEntry, ![[#RD_RS:]]}
+// CHECK: ![[#RD_ENTRY]] = !{ptr @RootDescriptorsEntry, ![[#RD_RS:]], i32 2}
// CHECK: ![[#RD_RS]] = !{![[#ROOT_CBV:]], ![[#ROOT_UAV:]], ![[#ROOT_SRV:]]}
// CHECK: ![[#ROOT_CBV]] = !{!"RootCBV", i32 0, i32 0, i32 0, i32 4}
// CHECK: ![[#ROOT_UAV]] = !{!"RootUAV", i32 0, i32 42, i32 3, i32 2}
@@ -66,7 +66,7 @@ void RootConstantsEntry() {}
[numthreads(1,1,1)]
void RootDescriptorsEntry() {}
-// CHECK: ![[#SS_ENTRY]] = !{ptr @StaticSamplerEntry, ![[#SS_RS:]]}
+// CHECK: ![[#SS_ENTRY]] = !{ptr @StaticSamplerEntry, ![[#SS_RS:]], i32 2}
// CHECK: ![[#SS_RS]] = !{![[#STATIC_SAMPLER:]]}
// checking filter = 0x4
diff --git a/llvm/lib/Target/DirectX/DXILRootSignature.cpp b/llvm/lib/Target/DirectX/DXILRootSignature.cpp
index 1f175fd4ecd99..29e78fcce5262 100644
--- a/llvm/lib/Target/DirectX/DXILRootSignature.cpp
+++ b/llvm/lib/Target/DirectX/DXILRootSignature.cpp
@@ -491,8 +491,8 @@ analyzeModule(Module &M) {
for (const auto &RSDefNode : RootSignatureNode->operands()) {
if (RSDefNode->getNumOperands() != 3) {
- reportError(Ctx, "Invalid format for Root Signature Definition. Pairs "
- "of function, root signature expected.");
+ reportError(Ctx, "Invalid Root Signature metadata - expected function, "
+ "signature, and version.");
continue;
}
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
index 2a2188b1a13bb..0392065842116 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
@@ -2,7 +2,7 @@
target triple = "dxil-unknown-shadermodel6.0-compute"
-; CHECK: error: Invalid format for Root Signature Definition. Pairs of function, root signature expected.
+; CHECK: error: Invalid Root Signature metadata - expected function, signature, and version.
; CHECK-NOT: Root Signature Definitions
|
|
@llvm/pr-subscribers-backend-directx Author: Justin Bogner (bogner) ChangesIn #144957 the backend was updated to expect a version in the metadata, but since the frontend wasn't updated this breaks compilation. This is a somewhat temporary fix to that until #144813 lands. Full diff: https://github.com/llvm/llvm-project/pull/145113.diff 4 Files Affected:
diff --git a/clang/lib/CodeGen/CGHLSLRuntime.cpp b/clang/lib/CodeGen/CGHLSLRuntime.cpp
index 34960c34e109f..3103f1798e14e 100644
--- a/clang/lib/CodeGen/CGHLSLRuntime.cpp
+++ b/clang/lib/CodeGen/CGHLSLRuntime.cpp
@@ -72,12 +72,17 @@ void addRootSignature(ArrayRef<llvm::hlsl::rootsig::RootElement> Elements,
llvm::hlsl::rootsig::MetadataBuilder Builder(Ctx, Elements);
MDNode *RootSignature = Builder.BuildRootSignature();
- MDNode *FnPairing =
- MDNode::get(Ctx, {ValueAsMetadata::get(Fn), RootSignature});
+
+ // TODO: We need to wire the root signature version up through the frontend
+ // rather than hardcoding it.
+ ConstantAsMetadata *Version =
+ ConstantAsMetadata::get(ConstantInt::get(llvm::Type::getInt32Ty(Ctx), 2));
+ MDNode *MDVals =
+ MDNode::get(Ctx, {ValueAsMetadata::get(Fn), RootSignature, Version});
StringRef RootSignatureValKey = "dx.rootsignatures";
auto *RootSignatureValMD = M.getOrInsertNamedMetadata(RootSignatureValKey);
- RootSignatureValMD->addOperand(FnPairing);
+ RootSignatureValMD->addOperand(MDVals);
}
} // namespace
diff --git a/clang/test/CodeGenHLSL/RootSignature.hlsl b/clang/test/CodeGenHLSL/RootSignature.hlsl
index ca843ffbb1ced..6618ca741aa9d 100644
--- a/clang/test/CodeGenHLSL/RootSignature.hlsl
+++ b/clang/test/CodeGenHLSL/RootSignature.hlsl
@@ -3,14 +3,14 @@
// CHECK: !dx.rootsignatures = !{![[#EMPTY_ENTRY:]], ![[#DT_ENTRY:]],
// CHECK-SAME: ![[#RF_ENTRY:]], ![[#RC_ENTRY:]], ![[#RD_ENTRY:]], ![[#SS_ENTRY:]]}
-// CHECK: ![[#EMPTY_ENTRY]] = !{ptr @EmptyEntry, ![[#EMPTY:]]}
+// CHECK: ![[#EMPTY_ENTRY]] = !{ptr @EmptyEntry, ![[#EMPTY:]], i32 2}
// CHECK: ![[#EMPTY]] = !{}
[shader("compute"), RootSignature("")]
[numthreads(1,1,1)]
void EmptyEntry() {}
-// CHECK: ![[#DT_ENTRY]] = !{ptr @DescriptorTableEntry, ![[#DT_RS:]]}
+// CHECK: ![[#DT_ENTRY]] = !{ptr @DescriptorTableEntry, ![[#DT_RS:]], i32 2}
// CHECK: ![[#DT_RS]] = !{![[#TABLE:]]}
// CHECK: ![[#TABLE]] = !{!"DescriptorTable", i32 0, ![[#CBV:]], ![[#SRV:]]}
// CHECK: ![[#CBV]] = !{!"CBV", i32 1, i32 0, i32 0, i32 -1, i32 4}
@@ -25,7 +25,7 @@ void EmptyEntry() {}
[numthreads(1,1,1)]
void DescriptorTableEntry() {}
-// CHECK: ![[#RF_ENTRY]] = !{ptr @RootFlagsEntry, ![[#RF_RS:]]}
+// CHECK: ![[#RF_ENTRY]] = !{ptr @RootFlagsEntry, ![[#RF_RS:]], i32 2}
// CHECK: ![[#RF_RS]] = !{![[#ROOT_FLAGS:]]}
// CHECK: ![[#ROOT_FLAGS]] = !{!"RootFlags", i32 2114}
@@ -38,7 +38,7 @@ void DescriptorTableEntry() {}
[numthreads(1,1,1)]
void RootFlagsEntry() {}
-// CHECK: ![[#RC_ENTRY]] = !{ptr @RootConstantsEntry, ![[#RC_RS:]]}
+// CHECK: ![[#RC_ENTRY]] = !{ptr @RootConstantsEntry, ![[#RC_RS:]], i32 2}
// CHECK: ![[#RC_RS]] = !{![[#ROOT_CONSTANTS:]]}
// CHECK: ![[#ROOT_CONSTANTS]] = !{!"RootConstants", i32 5, i32 1, i32 2, i32 1}
@@ -52,7 +52,7 @@ void RootFlagsEntry() {}
[numthreads(1,1,1)]
void RootConstantsEntry() {}
-// CHECK: ![[#RD_ENTRY]] = !{ptr @RootDescriptorsEntry, ![[#RD_RS:]]}
+// CHECK: ![[#RD_ENTRY]] = !{ptr @RootDescriptorsEntry, ![[#RD_RS:]], i32 2}
// CHECK: ![[#RD_RS]] = !{![[#ROOT_CBV:]], ![[#ROOT_UAV:]], ![[#ROOT_SRV:]]}
// CHECK: ![[#ROOT_CBV]] = !{!"RootCBV", i32 0, i32 0, i32 0, i32 4}
// CHECK: ![[#ROOT_UAV]] = !{!"RootUAV", i32 0, i32 42, i32 3, i32 2}
@@ -66,7 +66,7 @@ void RootConstantsEntry() {}
[numthreads(1,1,1)]
void RootDescriptorsEntry() {}
-// CHECK: ![[#SS_ENTRY]] = !{ptr @StaticSamplerEntry, ![[#SS_RS:]]}
+// CHECK: ![[#SS_ENTRY]] = !{ptr @StaticSamplerEntry, ![[#SS_RS:]], i32 2}
// CHECK: ![[#SS_RS]] = !{![[#STATIC_SAMPLER:]]}
// checking filter = 0x4
diff --git a/llvm/lib/Target/DirectX/DXILRootSignature.cpp b/llvm/lib/Target/DirectX/DXILRootSignature.cpp
index 1f175fd4ecd99..29e78fcce5262 100644
--- a/llvm/lib/Target/DirectX/DXILRootSignature.cpp
+++ b/llvm/lib/Target/DirectX/DXILRootSignature.cpp
@@ -491,8 +491,8 @@ analyzeModule(Module &M) {
for (const auto &RSDefNode : RootSignatureNode->operands()) {
if (RSDefNode->getNumOperands() != 3) {
- reportError(Ctx, "Invalid format for Root Signature Definition. Pairs "
- "of function, root signature expected.");
+ reportError(Ctx, "Invalid Root Signature metadata - expected function, "
+ "signature, and version.");
continue;
}
diff --git a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
index 2a2188b1a13bb..0392065842116 100644
--- a/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
+++ b/llvm/test/CodeGen/DirectX/ContainerData/RootSignature-Error.ll
@@ -2,7 +2,7 @@
target triple = "dxil-unknown-shadermodel6.0-compute"
-; CHECK: error: Invalid format for Root Signature Definition. Pairs of function, root signature expected.
+; CHECK: error: Invalid Root Signature metadata - expected function, signature, and version.
; CHECK-NOT: Root Signature Definitions
|
inbelic
approved these changes
Jun 20, 2025
|
LLVM Buildbot has detected a new failure on builder Full details are available at: https://lab.llvm.org/buildbot/#/builders/55/builds/13080 Here is the relevant piece of the build log for the reference |
Jaddyen
pushed a commit
to Jaddyen/llvm-project
that referenced
this pull request
Jun 23, 2025
In llvm#144957 the backend was updated to expect a version in the metadata, but since the frontend wasn't updated this breaks compilation. This is a somewhat temporary fix to that until llvm#144813 lands.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
In #144957 the backend was updated to expect a version in the metadata, but since the frontend wasn't updated this breaks compilation. This is a somewhat temporary fix to that until #144813 lands.