From 7591130946662120b551be0b4d6977d88d9c0efe Mon Sep 17 00:00:00 2001 From: Owen Anderson Date: Wed, 10 Sep 2008 20:41:13 +0000 Subject: Fix a bug in the coalescer where it didn't check if a live interval existed before trying to manipulate it. This was exposed by fast isel's handling of shifts on X86-64. With this, FreeBench/pcompress2 passes on X86-64 in fast isel. llvm-svn: 56067 --- llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'llvm/lib') diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp index cca891d7735..c6d4576e9c9 100644 --- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp +++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp @@ -464,7 +464,7 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt, MachineOperand &MO = CopyMI->getOperand(i); if (MO.isReg() && MO.isImplicit()) NewMI->addOperand(MO); - if (MO.isDef()) { + if (MO.isDef() && li_->hasInterval(MO.getReg())) { unsigned Reg = MO.getReg(); DLR = li_->getInterval(Reg).getLiveRangeContaining(DefIdx); if (DLR && DLR->valno->copy == CopyMI) -- cgit v1.2.3