[clang] [LinkerWrapper] Try to fix testing on Windows (PR #130285)

[Joseph Huber via cfe-commits]

https://github.com/jhuber6 updated https://github.com/llvm/llvm-project/pull/130285

>From d39b407a6ae2000f91a345c18cb710647b86c1c8 Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Fri, 7 Mar 2025 07:54:50 -0600
Subject: [PATCH 1/2] [LinkerWrapper] Try to fix testing on Windows

Summary:
Thanks to @Meinersbur for finding this. The `:` character used in AMD's
target-id's is invalid on windows. This patch replaces them with `_`.
---
 clang/test/Driver/linker-wrapper.c                      | 6 ++----
 clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp | 7 ++++---
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/clang/test/Driver/linker-wrapper.c b/clang/test/Driver/linker-wrapper.c
index 7586b87743bf5..1f7a065fec0dc 100644
--- a/clang/test/Driver/linker-wrapper.c
+++ b/clang/test/Driver/linker-wrapper.c
@@ -2,8 +2,6 @@
 // REQUIRES: nvptx-registered-target
 // REQUIRES: amdgpu-registered-target
 
-// REQUIRES: system-linux
-
 // An externally visible variable so static libraries extract.
 __attribute__((visibility("protected"), used)) int x;
 
@@ -120,7 +118,7 @@ __attribute__((visibility("protected"), used)) int x;
 
 // HIP: clang{{.*}} -o [[IMG_GFX90A:.+]] --target=amdgcn-amd-amdhsa -mcpu=gfx90a
 // HIP: clang{{.*}} -o [[IMG_GFX908:.+]] --target=amdgcn-amd-amdhsa -mcpu=gfx908
-// HIP: clang-offload-bundler{{.*}}-type=o -bundle-align=4096 -compress -compression-level=6 -targets=host-x86_64-unknown-linux-gnu,hip-amdgcn-amd-amdhsa--gfx90a,hip-amdgcn-amd-amdhsa--gfx908 -input=/dev/null -input=[[IMG_GFX90A]] -input=[[IMG_GFX908]] -output={{.*}}.hipfb
+// HIP: clang-offload-bundler{{.*}}-type=o -bundle-align=4096 -compress -compression-level=6 -targets=host-x86_64-unknown-linux-gnu,hip-amdgcn-amd-amdhsa--gfx90a,hip-amdgcn-amd-amdhsa--gfx908 -input={{/dev/null|NUL}} -input=[[IMG_GFX90A]] -input=[[IMG_GFX908]] -output={{.*}}.hipfb
 
 // RUN: clang-offload-packager -o %t.out \
 // RUN:   --image=file=%t.elf.o,kind=openmp,triple=amdgcn-amd-amdhsa,arch=gfx908 \
@@ -211,7 +209,7 @@ __attribute__((visibility("protected"), used)) int x;
 // RUN:   %t.o -o a.out 2>&1 | FileCheck %s --check-prefix=RELOCATABLE-LINK-HIP
 
 // RELOCATABLE-LINK-HIP: clang{{.*}} -o {{.*}}.img --target=amdgcn-amd-amdhsa
-// RELOCATABLE-LINK-HIP: clang-offload-bundler{{.*}} -type=o -bundle-align=4096 -targets=host-x86_64-unknown-linux-gnu,hip-amdgcn-amd-amdhsa--gfx90a -input=/dev/null -input={{.*}} -output={{.*}}
+// RELOCATABLE-LINK-HIP: clang-offload-bundler{{.*}} -type=o -bundle-align=4096 -targets=host-x86_64-unknown-linux-gnu,hip-amdgcn-amd-amdhsa--gfx90a -input={{/dev/null|NUL}} -input={{.*}} -output={{.*}}
 // RELOCATABLE-LINK-HIP: /usr/bin/ld.lld{{.*}}-r
 // RELOCATABLE-LINK-HIP: llvm-objcopy{{.*}}a.out --remove-section .llvm.offloading
 
diff --git a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
index 10dfb008cbec2..f111a9cadac6a 100644
--- a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -599,9 +599,10 @@ Expected<StringRef> writeOffloadFile(const OffloadFile &File) {
 
   StringRef Prefix =
       sys::path::stem(Binary.getMemoryBufferRef().getBufferIdentifier());
-
-  auto TempFileOrErr = createOutputFile(
-      Prefix + "-" + Binary.getTriple() + "-" + Binary.getArch(), "o");
+  std::string Filename =
+      (Prefix + "-" + Binary.getTriple() + "-" + Binary.getArch()).str();
+  llvm::replace(Filename, ':', '-');
+  auto TempFileOrErr = createOutputFile(Filename, "o");
   if (!TempFileOrErr)
     return TempFileOrErr.takeError();
 

>From e9389ee09e48da43ca0c00ffa16a0c8207ffd01a Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Fri, 7 Mar 2025 08:06:21 -0600
Subject: [PATCH 2/2] SmallString

---
 clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
index f111a9cadac6a..4c437e55adafd 100644
--- a/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
+++ b/clang/tools/clang-linker-wrapper/ClangLinkerWrapper.cpp
@@ -599,8 +599,9 @@ Expected<StringRef> writeOffloadFile(const OffloadFile &File) {
 
   StringRef Prefix =
       sys::path::stem(Binary.getMemoryBufferRef().getBufferIdentifier());
-  std::string Filename =
-      (Prefix + "-" + Binary.getTriple() + "-" + Binary.getArch()).str();
+  SmallString<128> Filename;
+  (Prefix + "-" + Binary.getTriple() + "-" + Binary.getArch())
+      .toNullTerminatedStringRef(Filename);
   llvm::replace(Filename, ':', '-');
   auto TempFileOrErr = createOutputFile(Filename, "o");
   if (!TempFileOrErr)