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| author | Than McIntosh <thanm@google.com> | 2017-09-27 19:34:00 +0000 |
|---|---|---|
| committer | Than McIntosh <thanm@google.com> | 2017-09-27 19:34:00 +0000 |
| commit | dee2cf67eafd0313a5f0f163b9cbe6c71228ae34 (patch) | |
| tree | d7d27d63cac4f03f7cfcf069d49e1400c46b97e4 /llvm/lib/CodeGen/MachineModuleInfo.cpp | |
| parent | 93e33f8fb3dbc3d08ff5c99b184648f5e52265a0 (diff) | |
| download | llvm-dee2cf67eafd0313a5f0f163b9cbe6c71228ae34.zip llvm-dee2cf67eafd0313a5f0f163b9cbe6c71228ae34.tar.gz llvm-dee2cf67eafd0313a5f0f163b9cbe6c71228ae34.tar.bz2 | |
[CodeGen] Emit necessary .note sections for -fsplit-stack
Summary:
According to https://gcc.gnu.org/wiki/SplitStacks, the linker expects a zero-sized .note.GNU-split-stack section if split-stack is used (and also .note.GNU-no-split-stack section if it also contains non-split-stack functions), so it can handle the cases where a split-stack function calls non-split-stack function.
This change adds the sections if needed.
Fixes PR #34670.
Reviewers: thanm, rnk, luqmana
Reviewed By: rnk
Subscribers: llvm-commits
Patch by Cherry Zhang <cherryyz@google.com>
Differential Revision: https://reviews.llvm.org/D38051
llvm-svn: 314335
Diffstat (limited to 'llvm/lib/CodeGen/MachineModuleInfo.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/MachineModuleInfo.cpp | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/MachineModuleInfo.cpp b/llvm/lib/CodeGen/MachineModuleInfo.cpp index f0dd77e..4cedcd0 100644 --- a/llvm/lib/CodeGen/MachineModuleInfo.cpp +++ b/llvm/lib/CodeGen/MachineModuleInfo.cpp @@ -208,6 +208,7 @@ bool MachineModuleInfo::doInitialization(Module &M) { ObjFileMMI = nullptr; CurCallSite = 0; DbgInfoAvailable = UsesVAFloatArgument = UsesMorestackAddr = false; + HasSplitStack = HasNosplitStack = false; AddrLabelSymbols = nullptr; TheModule = &M; return false; |