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| author | Peter Zotov <whitequark@whitequark.org> | 2016-08-30 10:48:31 +0000 |
|---|---|---|
| committer | Peter Zotov <whitequark@whitequark.org> | 2016-08-30 10:48:31 +0000 |
| commit | 002572318938f74bb0177dd83d24a59b1cdd013d (patch) | |
| tree | 2662b84887ca257991f4c27b15daa8448fb3d2e3 /llvm/lib/Transforms/Utils/SimplifyCFG.cpp | |
| parent | 96659df09c7b6920651dcbda8f11caad95d9bde8 (diff) | |
| download | llvm-002572318938f74bb0177dd83d24a59b1cdd013d.zip llvm-002572318938f74bb0177dd83d24a59b1cdd013d.tar.gz llvm-002572318938f74bb0177dd83d24a59b1cdd013d.tar.bz2 | |
docs: mention that clobbering output regs in inline asm is illegal.
I've found this out the hard way; LLVM will not normally catch this
error (unless -verify-machineinstrs is passed), and under certain
very specific circumstances (such as register scavenger running
under pressure) this would result in an opaque crash in codegen.
llvm-svn: 280071
Diffstat (limited to 'llvm/lib/Transforms/Utils/SimplifyCFG.cpp')
0 files changed, 0 insertions, 0 deletions