[LLVMbugs] [Bug 757] NEW: miscompilation of code

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=757

           Summary: miscompilation of code
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jingyuuiuc at gmail.com


The current LLVM miscompiled 176.gcc on Pentium4 Linux. I remember when I
checked out LLVM the day before yesterday, it worked correctly. Maybe some new
updates introduced bugs.

I attached Bugpoint report below. How to upload bugpoint.test.bc?

*** The following function is being miscompiled: 
_Z14SJLJDestructorP14llvm_exception_entry_2E_ce
<cbe><gcc>You can reproduce the problem with the command line:
  llc -f bugpoint.test.bc -o bugpoint.test.bc.s
  gcc ./bugpoint.safe.bc.cbe.c.so bugpoint.test.bc.s -o bugpoint.test.bc.exe -Wl,-R.
  bugpoint.test.bc.exe cp-decl.i -o - -quiet
The shared object was created with:
  llc -march=c bugpoint.safe.bc -o temporary.c
  gcc -xc temporary.c -O2 -o ./bugpoint.safe.bc.cbe.c.so -shared
-fno-strict-aliasing



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