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[Driver][Sparc] Default to -mcpu=v9 for 32-bit Linux/sparc64 #109278

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Merged
merged 3 commits into from
Sep 21, 2024
Merged

[Driver][Sparc] Default to -mcpu=v9 for 32-bit Linux/sparc64 #109278

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9123b7e
[Driver][Sparc] Default to -mcpu=v9 for 32-bit Linux/sparc64
rorth Sep 19, 2024
4ebd640
- Always default to `-mcpu=v9`.
rorth Sep 20, 2024
7469570
Merge branch 'main' into clang-linux-sparcv8-v9
rorth Sep 20, 2024
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5 changes: 5 additions & 0 deletions clang/docs/ReleaseNotes.rst
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Expand Up @@ -39,6 +39,11 @@ code bases.

- The ``le32`` and ``le64`` targets have been removed.

- ``clang -m32`` defaults to ``-mcpu=v9`` on SPARC Linux now. Distros
still supporting SPARC V8 CPUs need to specify ``-mcpu=v8`` with a
`config file
<https://clang.llvm.org/docs/UsersManual.html#configuration-files>`_.

- The ``clang-rename`` tool has been removed.

C/C++ Language Potentially Breaking Changes
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3 changes: 2 additions & 1 deletion clang/lib/Driver/ToolChains/Arch/Sparc.cpp
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Expand Up @@ -125,7 +125,8 @@ std::string sparc::getSparcTargetCPU(const Driver &D, const ArgList &Args,
return std::string(CPUName);
}

if (Triple.getArch() == llvm::Triple::sparc && Triple.isOSSolaris())
if (Triple.getArch() == llvm::Triple::sparc &&
(Triple.isOSSolaris() || Triple.isOSLinux()))
return "v9";
return "";
}
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3 changes: 2 additions & 1 deletion clang/test/Preprocessor/predefined-arch-macros.c
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Expand Up @@ -4137,7 +4137,8 @@
// CHECK_SPARC: #define __sparc__ 1
// CHECK_SPARC-NOT: #define __sparcv9 1
// CHECK_SPARC-NOT: #define __sparcv9__ 1
// CHECK_SPARC: #define __sparcv8 1
// CHECK_SPARC: #define __sparc_v9__ 1
// CHECK_SPARC-NOT: #define __sparcv8 1
// CHECK_SPARC-NOT: #define __sparcv9 1
// CHECK_SPARC-NOT: #define __sparcv9__ 1

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