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Reserve the segment registers on x86 to fix verifier failures in any code that

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uses them.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131591 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Cameron Zwarich 2011-05-18 22:24:48 +00:00
parent 8b3e5e5afa
commit e4c6445405
1 changed files with 9 additions and 0 deletions
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9
lib/Target/X86/X86RegisterInfo.cpp
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@ -468,6 +468,15 @@ BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
Reserved.set(X86::ST5);
Reserved.set(X86::ST6);
Reserved.set(X86::ST7);
// Mark the segment registers as reserved.
Reserved.set(X86::CS);
Reserved.set(X86::SS);
Reserved.set(X86::DS);
Reserved.set(X86::ES);
Reserved.set(X86::FS);
Reserved.set(X86::GS);
return Reserved;
}