[LLVMbugs] [Bug 8357] New: Crash inside fast register allocator on PowerPC

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8357

           Summary: Crash inside fast register allocator on PowerPC
           Product: new-bugs
           Version: trunk
          Platform: Other
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nwhitehorn at freebsd.org
                CC: llvmbugs at cs.uiuc.edu


With r116206, running llc on the attached IR causes an UNREACHABLE to be
reached:

llc vatest.ll -o foo.s -regalloc=fast -march=ppc32

UNREACHABLE executed!
Stack dump:
0.      Program arguments: llc vatest.ll -regalloc=fast -march=ppc32
1.      Running pass 'Function Pass Manager' on module 'vatest.ll'.
2.      Running pass 'Fast Register Allocator' on function '@testing'
Abort trap: 6 (core dumped)

This seems to be appear only when targeting ppc32, and is a regression relative
to last week.

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