Jakob Stoklund Olesen 1222287543 Fix PHIElimination optimization that uses MBB->getBasicBlock. ...

The BasicBlock associated with a MachineBasicBlock does not necessarily
correspond to the code in the MBB.

Don't insert a new IR BasicBlock when splitting critical edges. We are not
supposed to modify the IR during codegen, and we should be able to do just
fine with a NULL BB.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88707 91177308-0d34-0410-b5e6-96231b3b80d8

2009-11-13 21:56:15 +00:00

5.7 KiB

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