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Increment use count of new virtuals created during PHI elimination.
author
Evan Cheng
<evan.cheng@apple.com>
Wed, 18 Apr 2007 00:36:11 +0000
(
00:36
+0000)
committer
Evan Cheng
<evan.cheng@apple.com>
Wed, 18 Apr 2007 00:36:11 +0000
(
00:36
+0000)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36233
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/PHIElimination.cpp
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diff --git
a/lib/CodeGen/PHIElimination.cpp
b/lib/CodeGen/PHIElimination.cpp
index
734a06f
..
513bfde
100644
(file)
--- a/
lib/CodeGen/PHIElimination.cpp
+++ b/
lib/CodeGen/PHIElimination.cpp
@@
-138,6
+138,9
@@
void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
if (LV) {
MachineInstr *PHICopy = prior(AfterPHIsIt);
+ // Increment use count of the newly created virtual register.
+ LV->getVarInfo(IncomingReg).NumUses++;
+
// Add information to LiveVariables to know that the incoming value is
// killed. Note that because the value is defined in several places (once
// each for each incoming block), the "def" block and instruction fields