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| author |   visa <visa@openbsd.org> | 2020-12-01 13:30:13 +0000 |
|---|---|---|
| committer | visa <visa@openbsd.org> | 2020-12-01 13:30:13 +0000 |
| commit | e73ff4e669dda94395f3f3df1c98f51838c775d0 (patch) | |
| tree | 5ba958fe3033c8bdea01c4ce5c58d53a4f318d43 /gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp | |
| parent | bzero the antireplay counter rwlock before rw_init'ing it, not after. (diff) | |
| download | wireguard-openbsd-e73ff4e669dda94395f3f3df1c98f51838c775d0.tar.xz wireguard-openbsd-e73ff4e669dda94395f3f3df1c98f51838c775d0.zip | |
Implement Loongson 2F BTB bug workaround in clang
This adapts the -mfix-loongson2f-btb workaround from as(1) to
LLVM/clang. Because LLVM emits machine code directly without using
assembly as intermediary form, the workaround has to be applied
in the compiler backend in addition to the integrated assembler.
Discussed with miod@
OK mortimer@
Diffstat (limited to 'gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp')
| -rw-r--r-- | gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp b/gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp index c8e4003875a..03f637113d1 100644 --- a/gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp +++ b/gnu/llvm/clang/lib/Driver/ToolChains/Clang.cpp @@ -2366,6 +2366,11 @@ static void CollectArgsForIntegratedAssembler(Compilation &C, CmdArgs.push_back("-soft-float"); continue; } + if (Value.startswith("-mfix-loongson2f-btb")) { + CmdArgs.push_back("-mllvm"); + CmdArgs.push_back("-fix-loongson2f-btb"); + continue; + } MipsTargetFeature = llvm::StringSwitch<const char *>(Value) .Case("-mips1", "+mips1") |