[LLVMbugs] [Bug 3440] New: llvm miscompiles gcc.target/i386/sse4_1-mpsadbw.c

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Thu Jan 29 10:47:32 PST 2009


           Summary: llvm miscompiles gcc.target/i386/sse4_1-mpsadbw.c
           Product: libraries
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: P2
         Component: Scalar Optimizations
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: evan.cheng at apple.com
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=2472)
 --> (http://llvm.org/bugs/attachment.cgi?id=2472)

Dale noticed lots of gcc sse4.1 tests are failing (when they are run on sse4.1
capable machines!). I looked into one of them: sse4_1-mpsadbw.c. It turns out
to be an optimizer bug.

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