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141aea9
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Handle NewReg==OldReg in renameRegister().
author
Jakob Stoklund Olesen
<stoklund@2pi.dk>
Tue, 15 May 2012 22:20:27 +0000
(22:20 +0000)
committer
Jakob Stoklund Olesen
<stoklund@2pi.dk>
Tue, 15 May 2012 22:20:27 +0000
(22:20 +0000)
This can happen when widening a virtual register to a super-register
class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156867
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/LiveDebugVariables.cpp
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diff --git
a/lib/CodeGen/LiveDebugVariables.cpp
b/lib/CodeGen/LiveDebugVariables.cpp
index 2187833031eefb26b9a56b54ff977cfb83407359..5b7941f4612025b15fb984ba637346f798d4484b 100644
(file)
--- a/
lib/CodeGen/LiveDebugVariables.cpp
+++ b/
lib/CodeGen/LiveDebugVariables.cpp
@@
-721,7
+721,8
@@
renameRegister(unsigned OldReg, unsigned NewReg, unsigned SubIdx) {
if (TargetRegisterInfo::isVirtualRegister(NewReg))
mapVirtReg(NewReg, UV);
- virtRegToEqClass.erase(OldReg);
+ if (OldReg != NewReg)
+ virtRegToEqClass.erase(OldReg);
do {
UV->renameRegister(OldReg, NewReg, SubIdx, TRI);