From 52cd548525089056ac5be97e2b8eb05257bcdf3b Mon Sep 17 00:00:00 2001 From: Jakob Stoklund Olesen Date: Fri, 13 Nov 2009 21:56:01 +0000 Subject: [PATCH] The instruction pointer %RIP is a reserved register on x86_64. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88705 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Target/X86/X86RegisterInfo.cpp | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp index d4e720c9528..44f1fa3b035 100644 --- a/lib/Target/X86/X86RegisterInfo.cpp +++ b/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);