https://github.com/inbelic updated
https://github.com/llvm/llvm-project/pull/157690
>From 0831e99798973a6d8c47ef6b257046640298142c Mon Sep 17 00:00:00 2001
From: Finn Plummer <canadienf...@gmail.com>
Date: Tue, 9 Sep 2025 15:09:28 +0000
Subject: [PATCH 1/3] [HLSL] Add the `Frs` driver option
This pr adds the `Frs` as a DXC driver option.
It is done by invoking `llvm-objcopy` with the `extract-section=RTS0`
argument specified to output the separate `DXContainer`.
This resolves: .
---
clang/include/clang/Driver/Options.td | 2 ++
clang/lib/Driver/ToolChains/HLSL.cpp | 9 ++++++++-
clang/test/Driver/dxc_frs.hlsl | 10 ++++++++++
3 files changed, 20 insertions(+), 1 deletion(-)
create mode 100644 clang/test/Driver/dxc_frs.hlsl
diff --git a/clang/include/clang/Driver/Options.td
b/clang/include/clang/Driver/Options.td
index ea5a94f840470..123caa9d35520 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -9418,6 +9418,8 @@ def dxc_Fo : DXCJoinedOrSeparate<"Fo">,
HelpText<"Output object file">;
def dxc_Fc : DXCJoinedOrSeparate<"Fc">,
HelpText<"Output assembly listing file">;
+def dxc_Frs : DXCJoinedOrSeparate<"Frs">,
+ HelpText<"Output additional root signature object file">;
def dxil_validator_version : Option<["/", "-"], "validator-version",
KIND_SEPARATE>,
Group<dxc_Group>, Flags<[HelpHidden]>,
Visibility<[DXCOption, ClangOption, CC1Option]>,
diff --git a/clang/lib/Driver/ToolChains/HLSL.cpp
b/clang/lib/Driver/ToolChains/HLSL.cpp
index 559af32dc3808..179d7fc31ade9 100644
--- a/clang/lib/Driver/ToolChains/HLSL.cpp
+++ b/clang/lib/Driver/ToolChains/HLSL.cpp
@@ -317,6 +317,12 @@ void tools::hlsl::LLVMObjcopy::ConstructJob(Compilation
&C, const JobAction &JA,
CmdArgs.push_back(Frs);
}
+ if (Arg *Arg = Args.getLastArg(options::OPT_dxc_Frs)) {
+ const char *Frs =
+ Args.MakeArgString("--extract-section=RTS0=" + Twine(Arg->getValue()));
+ CmdArgs.push_back(Frs);
+ }
+
assert(CmdArgs.size() > 2 && "Unnecessary invocation of objcopy.");
C.addCommand(std::make_unique<Command>(JA, *this,
ResponseFileSupport::None(),
@@ -493,7 +499,8 @@ bool
HLSLToolChain::requiresBinaryTranslation(DerivedArgList &Args) const {
bool HLSLToolChain::requiresObjcopy(DerivedArgList &Args) const {
return Args.hasArg(options::OPT_dxc_Fo) &&
- Args.hasArg(options::OPT_dxc_strip_rootsignature);
+ (Args.hasArg(options::OPT_dxc_strip_rootsignature) ||
+ Args.hasArg(options::OPT_dxc_Frs));
}
bool HLSLToolChain::isLastJob(DerivedArgList &Args,
diff --git a/clang/test/Driver/dxc_frs.hlsl b/clang/test/Driver/dxc_frs.hlsl
new file mode 100644
index 0000000000000..7f7034f6fef89
--- /dev/null
+++ b/clang/test/Driver/dxc_frs.hlsl
@@ -0,0 +1,10 @@
+// RUN: %clang_dxc -T cs_6_0 /Fo %t.dxo /Frs %t.rs.dxo -### %s 2>&1 |
FileCheck %s
+
+// Test to demonstrate that extracting the root signature to the specified
+// output file with /Frs.
+
+// CHECK: "{{.*}}llvm-objcopy{{(.exe)?}}" "{{.*}}.obj" "{{.*}}.dxo"
"--extract-section=RTS0={{.*}}.rs.dxo"
+
+[shader("compute"), RootSignature("")]
+[numthreads(1,1,1)]
+void EmptyEntry() {}
>From 11c141f2c386cc78f9daa4d473ac9a35194cb0b7 Mon Sep 17 00:00:00 2001
From: Finn Plummer <canadienf...@gmail.com>
Date: Tue, 9 Sep 2025 15:11:37 +0000
Subject: [PATCH 2/3] self-review: update old arg name
---
clang/lib/Driver/ToolChains/HLSL.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/clang/lib/Driver/ToolChains/HLSL.cpp
b/clang/lib/Driver/ToolChains/HLSL.cpp
index 179d7fc31ade9..1bb7aa02188f9 100644
--- a/clang/lib/Driver/ToolChains/HLSL.cpp
+++ b/clang/lib/Driver/ToolChains/HLSL.cpp
@@ -313,8 +313,8 @@ void tools::hlsl::LLVMObjcopy::ConstructJob(Compilation &C,
const JobAction &JA,
CmdArgs.push_back(Output.getFilename());
if (Args.hasArg(options::OPT_dxc_strip_rootsignature)) {
- const char *Frs = Args.MakeArgString("--remove-section=RTS0");
- CmdArgs.push_back(Frs);
+ const char *StripRS = Args.MakeArgString("--remove-section=RTS0");
+ CmdArgs.push_back(StripRS);
}
if (Arg *Arg = Args.getLastArg(options::OPT_dxc_Frs)) {
>From 7198a1e6df364a1a8fc5300eb1535985bff07725 Mon Sep 17 00:00:00 2001
From: Finn Plummer <finn.c.p...@gmail.com>
Date: Tue, 9 Sep 2025 10:27:03 -0600
Subject: [PATCH 3/3] review: comment nit
---
clang/test/Driver/dxc_frs.hlsl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/test/Driver/dxc_frs.hlsl b/clang/test/Driver/dxc_frs.hlsl
index 7f7034f6fef89..767cab604c829 100644
--- a/clang/test/Driver/dxc_frs.hlsl
+++ b/clang/test/Driver/dxc_frs.hlsl
@@ -1,6 +1,6 @@
// RUN: %clang_dxc -T cs_6_0 /Fo %t.dxo /Frs %t.rs.dxo -### %s 2>&1 |
FileCheck %s
-// Test to demonstrate that extracting the root signature to the specified
+// Test to demonstrate extracting the root signature to the specified
// output file with /Frs.
// CHECK: "{{.*}}llvm-objcopy{{(.exe)?}}" "{{.*}}.obj" "{{.*}}.dxo"
"--extract-section=RTS0={{.*}}.rs.dxo"
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