From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Fri, 13 Nov 2009 21:56:01 +0000 (+0000)
Subject: The instruction pointer %RIP is a reserved register on x86_64.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=52cd548525089056ac5be97e2b8eb05257bcdf3b;p=oota-llvm.git

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
---

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);