diff options
| author | Nick Desaulniers <ndesaulniers@google.com> | 2021-06-08 08:22:48 -0700 |
|---|---|---|
| committer | Nick Desaulniers <ndesaulniers@google.com> | 2021-06-08 08:31:04 -0700 |
| commit | 433c8d950cb3a1fa0977355ce0367e8c763a3f13 (patch) | |
| tree | 925ab99b1f6fad5aa16b8c40d5297219a7a0fb69 /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | c5d56fec502f36a0c994835ca23bc93a6c682d95 (diff) | |
[IR] make -stack-alignment= into a module attr
Similar to D102742, specifying the stack alignment via CodegenOpts means
that this flag gets dropped during LTO, unless the command line is
re-specified as a plugin opt. Instead, encode this information as a
module level attribute so that we don't have to expose this llvm
internal flag when linking the Linux kernel with LTO.
Looks like external dependencies might need a fix:
* https://github.com/llvm-hs/llvm-hs/issues/345
* https://github.com/halide/Halide/issues/6079
Link: https://github.com/ClangBuiltLinux/linux/issues/1377
Reviewed By: tejohnson
Differential Revision: https://reviews.llvm.org/D103048
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index 1f23ce7de52b..c93339a211f3 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -785,6 +785,8 @@ void CodeGenModule::Release() { if (getCodeGenOpts().StackProtectorGuardOffset != INT_MAX) getModule().setStackProtectorGuardOffset( getCodeGenOpts().StackProtectorGuardOffset); + if (getCodeGenOpts().StackAlignment) + getModule().setOverrideStackAlignment(getCodeGenOpts().StackAlignment); getTargetCodeGenInfo().emitTargetMetadata(*this, MangledDeclNames); |