[LLVMbugs] [Bug 22346] New: Turn off DAGCombine at -O0

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Tue Jan 27 03:08:56 PST 2015


            Bug ID: 22346
           Summary: Turn off DAGCombine at -O0
           Product: libraries
           Version: trunk
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P
         Component: Common Code Generator Code
          Assignee: unassignedbugs at nondot.org
          Reporter: paul_robinson at playstation.sony.com
                CC: llvmbugs at cs.uiuc.edu
    Classification: Unclassified

DAGCombine should not run at -O0 (see discussion on review D7181).

However, doing that at the moment causes 19 test failures, including
one crash and one fail-to-select.

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