[LLVMbugs] [Bug 1779] New: Assertion `!OpInfo.AssignedRegs.Regs.empty() && "Couldn' t allocate input reg!"' failed

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=1779

           Summary: Assertion `!OpInfo.AssignedRegs.Regs.empty() &&
                    "Couldn't allocate input reg!"' failed
           Product: new-bugs
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: new bugs
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: edwintorok at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=1201)
 --> (http://llvm.org/bugs/attachment.cgi?id=1201)
testcase

On a 32-bit machine (!important, the inline assembly is for 32-bit):
$ llvm-gcc testcase-min.i
cc1: SelectionDAGISel.cpp:3732: void
llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallInst&): Assertion
`!OpInfo.AssignedRegs.Regs.empty() && "Couldn't allocate input reg!"' failed.
testcase-min.i:47: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://llvm.org/bugs> for instructions.

$ llc bugpoint-reduced-simplified.bc
llc: SelectionDAGISel.cpp:3726: void
llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallInst&): Assertion
`!OpInfo.AssignedRegs.Regs.empty() && "Couldn't allocate input reg!"' failed.
llc[0x86e7f7c]
/lib/i686/cmov/libc.so.6(abort+0x101)[0xb7ce2181]
/lib/i686/cmov/libc.so.6(__assert_fail+0xee)[0xb7cd9b6e]
llc(llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallInst&)+0x2217)[0x84566e7]

Note: the testcase contains the __builtin_choose_expr suggested by Chris
Lattner (thanks!). This bug has nothing to do with that, if you remove it, the
bug is still there.
I left it there though, because it illustrates the operand sizes.


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