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authorChris Lattner <sabre@nondot.org>2004-03-16 01:45:55 +0000
committerChris Lattner <sabre@nondot.org>2004-03-16 01:45:55 +0000
commit6ae9eb1566685241eb8eced2b0ebfb8dbb3d5b3f (patch)
tree0cd9eca751355e1e28ec94c43e98dbba8de2ec8b /lib/CodeGen
parent63dd4ff809edf16552aecdb082a52ef9364d16aa (diff)
downloadexternal_llvm-6ae9eb1566685241eb8eced2b0ebfb8dbb3d5b3f.zip
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Fix PR294
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12425 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen')
-rw-r--r--lib/CodeGen/RegAllocSimple.cpp3
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/RegAllocSimple.cpp b/lib/CodeGen/RegAllocSimple.cpp
index cd48cd2..1b7f547 100644
--- a/lib/CodeGen/RegAllocSimple.cpp
+++ b/lib/CodeGen/RegAllocSimple.cpp
@@ -172,7 +172,8 @@ void RegAllocSimple::AllocateBasicBlock(MachineBasicBlock &MBB) {
for (int i = MI->getNumOperands() - 1; i >= 0; --i) {
MachineOperand &op = MI->getOperand(i);
- if (op.isRegister() && MRegisterInfo::isVirtualRegister(op.getReg())) {
+ if (op.isRegister() && op.getReg() &&
+ MRegisterInfo::isVirtualRegister(op.getReg())) {
unsigned virtualReg = (unsigned) op.getReg();
DEBUG(std::cerr << "op: " << op << "\n");
DEBUG(std::cerr << "\t inst[" << i << "]: ";