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Fix PR3124: overly strict assert.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@60392 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2008-12-02 02:15:36 +00:00
parent 221cd2f081
commit bbe4105cd7
2 changed files with 19 additions and 2 deletions
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6
lib/CodeGen/VirtRegMap.cpp
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@ -1760,8 +1760,10 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM) {
SmallVector<unsigned, 2> KillRegs;
InvalidateKills(MI, RegKills, KillOps, &KillRegs);
if (MO.isDead() && !KillRegs.empty()) {
// Source register or an implicit super-register use is killed.
assert(KillRegs[0] == Dst || TRI->isSubRegister(KillRegs[0], Dst));
// Source register or an implicit super/sub-register use is killed.
assert(KillRegs[0] == Dst ||
TRI->isSubRegister(KillRegs[0], Dst) ||
TRI->isSuperRegister(KillRegs[0], Dst));
// Last def is now dead.
TransferDeadness(&MBB, Dist, Src, RegKills, KillOps);
}