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| author | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-10-07 07:01:31 +0000 |
|---|---|---|
| committer | Michael Kuperstein <michael.m.kuperstein@intel.com> | 2015-10-07 07:01:31 +0000 |
| commit | 259f1508f08f662eb2ecfab5155cd92e0c03eff8 (patch) | |
| tree | 5cf2fc329842d2039ab61ece0d8978b35cb2b946 /llvm/lib/CodeGen/AsmPrinter | |
| parent | 1a6fd1cc0f3dea144ac6bd6291de48283f990745 (diff) | |
| download | bcm5719-llvm-259f1508f08f662eb2ecfab5155cd92e0c03eff8.tar.gz bcm5719-llvm-259f1508f08f662eb2ecfab5155cd92e0c03eff8.zip | |
[X86] Emit .cfi_escape GNU_ARGS_SIZE when adjusting the stack before calls
When outgoing function arguments are passed using push instructions, and EH
is enabled, we may need to indicate to the stack unwinder that the stack
pointer was adjusted before the call.
This should fix the exception handling issues in PR24792.
Differential Revision: http://reviews.llvm.org/D13132
llvm-svn: 249522
Diffstat (limited to 'llvm/lib/CodeGen/AsmPrinter')
| -rw-r--r-- | llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp index da4c458ad62..dfeca1bf2f3 100644 --- a/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/AsmPrinterDwarf.cpp @@ -246,6 +246,12 @@ void AsmPrinter::emitCFIInstruction(const MCCFIInstruction &Inst) const { case MCCFIInstruction::OpSameValue: OutStreamer->EmitCFISameValue(Inst.getRegister()); break; + case MCCFIInstruction::OpGnuArgsSize: + OutStreamer->EmitCFIGnuArgsSize(Inst.getOffset()); + break; + case MCCFIInstruction::OpEscape: + OutStreamer->EmitCFIEscape(Inst.getValues()); + break; } } |
