[LLVMbugs] [Bug 3156] New: Couldn't allocate output reg for constraint 'r' (x86_32/OSX )

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Wed Dec 3 07:20:57 PST 2008


           Summary: Couldn't allocate output reg for constraint 'r'
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: MacOS X
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: sveina at gmail.com
                CC: llvmbugs at cs.uiuc.edu

While attempting to rewire the mplayer build system for LLVM, I ran into this
bug in llc. It is not overly surprising, as mplayer uses a lot of inline
assembly that use every register available, but it still probably counts as a

It was produced with minimal changes to mplayer, merely substituting llvm-foo
for its normal toolchain and doing the linking manually.

Both the bugpoint reduced code, and the final output of the compilation process
is attached.

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