diff options
Diffstat (limited to 'lib/Target/X86/X86FastISel.cpp')
| -rw-r--r-- | lib/Target/X86/X86FastISel.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86FastISel.cpp b/lib/Target/X86/X86FastISel.cpp index 952cd6011f..6ab218a9d6 100644 --- a/lib/Target/X86/X86FastISel.cpp +++ b/lib/Target/X86/X86FastISel.cpp @@ -1853,6 +1853,10 @@ bool X86FastISel::DoSelectCall(const Instruction *I, const char *MemIntName) { for (unsigned i = 0, e = RegArgs.size(); i != e; ++i) MIB.addReg(RegArgs[i]); + // Add a register mask with the call-preserved registers. + // Proper defs for return values will be added by setPhysRegsDeadExcept(). + MIB.addRegMask(TRI.getCallPreservedMask(CS.getCallingConv())); + // Issue CALLSEQ_END unsigned AdjStackUp = TII.getCallFrameDestroyOpcode(); unsigned NumBytesCallee = 0; |