diff options
| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-11 18:40:32 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-11 18:40:32 +0000 |
| commit | 4c9fbbb511be36e15d66e270c679f19a31297328 (patch) | |
| tree | 9de185283ee358031f98c97c871823d3c730b8b6 /llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | |
| parent | 81ced5c472d1e07fdfe4b3a8b7d5272fedc5f0ba (diff) | |
Fix PR2783 - coalescer bug. Missing a TargetRegisterInfo::isVirtualRegister check.
llvm-svn: 56112
Diffstat (limited to 'llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index c6d4576e9c93..2d4d59071535 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -1319,7 +1319,8 @@ bool SimpleRegisterCoalescing::JoinCopy(CopyRec &TheCopy, bool &Again) { // If resulting interval has a preference that no longer fits because of subreg // coalescing, just clear the preference. - if (ResDstInt->preference && (isExtSubReg || isInsSubReg)) { + if (ResDstInt->preference && (isExtSubReg || isInsSubReg) && + TargetRegisterInfo::isVirtualRegister(ResDstInt->reg)) { const TargetRegisterClass *RC = mri_->getRegClass(ResDstInt->reg); if (!RC->contains(ResDstInt->preference)) ResDstInt->preference = 0; |