diff options
Diffstat (limited to 'lib/CodeGen')
| -rw-r--r-- | lib/CodeGen/SimpleRegisterCoalescing.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp index c6d4576e9c..2d4d590715 100644 --- a/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/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; |