[LLVMbugs] [Bug 828] NEW: X86 backend lacks 'q' inlineasm constraint

[bugzilla-daemon at cs.uiuc.edu]

http://llvm.org/bugs/show_bug.cgi?id=828

           Summary: X86 backend lacks 'q' inlineasm constraint
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: X86
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: jackrobi at gmail.com


cat |llvm-as|llc
target endian = little
target pointersize = 32
target triple = "i686-pc-linux-gnu"

implementation   ; Functions:

void %_ZN5() {

cond_true9:             ; preds = %entry
        %tmp3.i.i = call int asm sideeffect "lock; cmpxchg $1,$2",
"={ax},q,m,0,~{dirflag},~{fpsr},~{flags},~{memory}"( int 0, int* null, int 0 ) 
              ; <int> [#uses=0]
        ret void
}
^D
llc: SelectionDAGISel.cpp:2230: void
llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallInst&): Assertion `CTy ==
TargetLowering::C_RegisterClass && "Unknown op type!"' failed.
llc((anonymous namespace)::PrintStackTrace()+0x1f)[0x878a07f]
/lib/tls/i686/cmov/libc.so.6(abort+0x1dc)[0xb7dc27d8]
/lib/tls/i686/cmov/libc.so.6(__assert_fail+0x109)[0xb7dbad5d]
llc(llvm::SelectionDAGLowering::visitInlineAsm(llvm::CallInst&)+0x57e)[0x8559e2e]
Aborted



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