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| author | Bill Wendling <isanbard@gmail.com> | 2011-01-06 00:50:34 +0000 |
|---|---|---|
| committer | Bill Wendling <isanbard@gmail.com> | 2011-01-06 00:50:34 +0000 |
| commit | 3b949bcaf345d15cb451f54b19bc4c60cf625a3d (patch) | |
| tree | 222c31a686eb1e1d64c74bf6f19ed1051e2d638f /llvm/lib | |
| parent | 81d40711f31ca263a370d029116f04d81ba6ddf2 (diff) | |
| download | bcm5719-llvm-3b949bcaf345d15cb451f54b19bc4c60cf625a3d.tar.gz bcm5719-llvm-3b949bcaf345d15cb451f54b19bc4c60cf625a3d.zip | |
PR8919 - LLVM incorrectly generates "_alloca" as the stack probing call. That
works only on MinGW32. On 64-bit, the function to call is "__chkstk".
Patch by KS Sreeram!
llvm-svn: 122934
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86FrameInfo.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86FrameInfo.cpp b/llvm/lib/Target/X86/X86FrameInfo.cpp index afadb4c9b3d..5a8d9768f84 100644 --- a/llvm/lib/Target/X86/X86FrameInfo.cpp +++ b/llvm/lib/Target/X86/X86FrameInfo.cpp @@ -566,6 +566,8 @@ void X86FrameInfo::emitPrologue(MachineFunction &MF) const { const char *StackProbeSymbol = STI.isTargetWindows() ? "_chkstk" : "_alloca"; + if (Is64Bit && STI.isTargetCygMing()) + StackProbeSymbol = "__chkstk"; unsigned CallOp = Is64Bit ? X86::CALL64pcrel32 : X86::CALLpcrel32; if (!isEAXAlive) { BuildMI(MBB, MBBI, DL, TII.get(X86::MOV32ri), X86::EAX) |
