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RegisterCoalescer::reMaterializeTrivialDef() can constrain the destination
author
Cameron Zwarich
<zwarich@apple.com>
Thu, 14 Feb 2013 03:25:24 +0000
(
03:25
+0000)
committer
Cameron Zwarich
<zwarich@apple.com>
Thu, 14 Feb 2013 03:25:24 +0000
(
03:25
+0000)
register class to match the defining instruction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175130
91177308
-0d34-0410-b5e6-
96231b3b80d8
lib/CodeGen/RegisterCoalescer.cpp
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diff --git
a/lib/CodeGen/RegisterCoalescer.cpp
b/lib/CodeGen/RegisterCoalescer.cpp
index 07ae8a2e3af6eb2b63152da8233143e92a878595..e2488adcdc8e27455ec8382abc0e9f43382c716d 100644
(file)
--- a/
lib/CodeGen/RegisterCoalescer.cpp
+++ b/
lib/CodeGen/RegisterCoalescer.cpp
@@
-769,7
+769,7
@@
bool RegisterCoalescer::reMaterializeTrivialDef(CoalescerPair &CP,
// extract_subreg, insert_subreg, subreg_to_reg coalescing.
const TargetRegisterClass *RC = TII->getRegClass(MCID, 0, TRI, *MF);
if (TargetRegisterInfo::isVirtualRegister(DstReg)) {
- if (
MRI->getRegClass(DstReg) != RC
)
+ if (
!MRI->constrainRegClass(DstReg, RC)
)
return false;
} else if (!RC->contains(DstReg))
return false;