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The instruction pointer %RIP is a reserved register on x86_64.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88705 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen 2009-11-13 21:56:01 +00:00
parent 1dc0fcbaed
commit 52cd548525
1 changed files with 5 additions and 0 deletions

5
lib/Target/X86/X86RegisterInfo.cpp

@ -392,6 +392,11 @@ BitVector X86RegisterInfo::getReservedRegs(const MachineFunction &MF) const {
Reserved.set(X86::SP);
Reserved.set(X86::SPL);
// Set the instruction pointer register and its aliases as reserved.
Reserved.set(X86::RIP);
Reserved.set(X86::EIP);
Reserved.set(X86::IP);
// Set the frame-pointer register and its aliases as reserved if needed.
if (hasFP(MF)) {
Reserved.set(X86::RBP);