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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-17 18:36:25 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-17 18:36:25 +0000 |
| commit | f3fcd7a464afc7c640b8c611ac422f7904c3faa7 (patch) | |
| tree | d8d0b08bf056d83e2118e4fcdd3947cb077631e6 /llvm/lib/CodeGen | |
| parent | 7f9671ba37a0a75a85f8c869e7f487e380dc5950 (diff) | |
| download | bcm5719-llvm-f3fcd7a464afc7c640b8c611ac422f7904c3faa7.tar.gz bcm5719-llvm-f3fcd7a464afc7c640b8c611ac422f7904c3faa7.zip | |
Unallocatable registers do not have live intervals.
llvm-svn: 56287
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index e06eb161c08..0044f06d33d 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -568,7 +568,9 @@ SimpleRegisterCoalescing::UpdateRegDefsUses(unsigned SrcReg, unsigned DstReg, unsigned CopySrcReg, CopyDstReg; if (TID.getNumDefs() == 1 && TID.getNumOperands() > 2 && tii_->isMoveInstr(*UseMI, CopySrcReg, CopyDstReg) && - CopySrcReg != CopyDstReg) { + CopySrcReg != CopyDstReg && + (TargetRegisterInfo::isVirtualRegister(CopyDstReg) || + allocatableRegs_[CopyDstReg])) { LiveInterval &LI = li_->getInterval(CopyDstReg); unsigned DefIdx = li_->getDefIndex(li_->getInstructionIndex(UseMI)); const LiveRange *DLR = LI.getLiveRangeContaining(DefIdx); |
