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| author | Hans Wennborg <hans@hanshq.net> | 2016-09-22 19:50:05 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2016-09-22 19:50:05 +0000 |
| commit | c4b1d20ba2952e1699ec5c44dd532fa8e9bf042c (patch) | |
| tree | eca5d64e9c70e9dd6885eefe355720a4a09ad88b /llvm/lib/CodeGen/AsmPrinter/WinException.cpp | |
| parent | 0201a9e94e3e95baf0e2d818e79c3f63b8fef558 (diff) | |
| download | bcm5719-llvm-c4b1d20ba2952e1699ec5c44dd532fa8e9bf042c.tar.gz bcm5719-llvm-c4b1d20ba2952e1699ec5c44dd532fa8e9bf042c.zip | |
Win64: Don't emit unwind info for "leaf" functions (PR30337)
According to MSDN (see the PR), functions which don't touch any callee-saved
registers (including %rsp) don't need any unwind info.
This patch makes LLVM not emit unwind info for such functions, to save
binary size.
Differential Revision: https://reviews.llvm.org/D24748
llvm-svn: 282185
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter/WinException.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/WinException.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/WinException.cpp b/llvm/lib/CodeGen/AsmPrinter/WinException.cpp index 8faf53fbfb3..72f8a217c88 100644 --- a/llvm/lib/CodeGen/AsmPrinter/WinException.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/WinException.cpp @@ -90,7 +90,7 @@ void WinException::beginFunction(const MachineFunction *MF) { // If we're not using CFI, we don't want the CFI or the personality, but we // might want EH tables if we had EH pads. - if (!Asm->MAI->usesWindowsCFI()) { + if (!Asm->MAI->usesWindowsCFI() || (!MF->hasWinCFI() && !Per)) { shouldEmitLSDA = hasEHFunclets; shouldEmitPersonality = false; return; |
