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Additional check for regno==0
author
Jim Grosbach
<grosbach@apple.com>
Tue, 29 Sep 2009 20:11:10 +0000
(20:11 +0000)
committer
Jim Grosbach
<grosbach@apple.com>
Tue, 29 Sep 2009 20:11:10 +0000
(20:11 +0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83103
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/RegisterScavenging.cpp
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diff --git
a/lib/CodeGen/RegisterScavenging.cpp
b/lib/CodeGen/RegisterScavenging.cpp
index ada7b4665d35ab314914b1fdaedee2b51eacf092..b99f88f94da819f19a7c48ce8c30bc23e8508764 100644
(file)
--- a/
lib/CodeGen/RegisterScavenging.cpp
+++ b/
lib/CodeGen/RegisterScavenging.cpp
@@
-280,7
+280,7
@@
unsigned RegScavenger::scavengeRegister(const TargetRegisterClass *RC,
// Exclude all the registers being used by the instruction.
for (unsigned i = 0, e = I->getNumOperands(); i != e; ++i) {
MachineOperand &MO = I->getOperand(i);
- if (MO.isReg() && !TRI->isVirtualRegister(MO.getReg()))
+ if (MO.isReg() &&
MO.getReg() != 0 &&
!TRI->isVirtualRegister(MO.getReg()))
Candidates.reset(MO.getReg());
}