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9ec1a55a86
If no register classes are added to CriticalPathRCs, then the CriticalPathSet
bitmask will be empty. In that case, ExcludeRegs must remain NULL or else this
line will cause a segfault:
} else if ((ExcludeRegs != NULL) && ExcludeRegs->test(AntiDepReg)) {
I have no in-tree test case.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190584 91177308-0d34-0410-b5e6-96231b3b80d8
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