diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2007-12-20 02:23:25 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2007-12-20 02:23:25 +0000 |
| commit | 689494208b555240d6021a7bbc25b9bbb9c2d49f (patch) | |
| tree | 144959139c73556d93de954e02735747aa6d2997 | |
| parent | d6c0758944b31bb5316b36cad37f4610a77f784d (diff) | |
The physical register + virtual register joining requirement was much too strict.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45253 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index c608b8d1c4..c03933944f 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -396,7 +396,7 @@ bool SimpleRegisterCoalescing::JoinCopy(CopyRec TheCopy, bool &Again) { unsigned JoinVReg = SrcIsPhys ? repDstReg : repSrcReg; unsigned JoinPReg = SrcIsPhys ? repSrcReg : repDstReg; const TargetRegisterClass *RC = mf_->getSSARegMap()->getRegClass(JoinVReg); - unsigned Threshold = allocatableRCRegs_[RC].count(); + unsigned Threshold = allocatableRCRegs_[RC].count() * 2; if (TheCopy.isBackEdge) Threshold *= 2; // Favors back edge copies. |