[LLVMbugs] [Bug 6065] New: ARM JIT should support ARMCompilationCallback in thumb2

bugzilla-daemon at cs.uiuc.edu bugzilla-daemon at cs.uiuc.edu
Sat Jan 16 22:37:45 PST 2010


           Summary: ARM JIT should support ARMCompilationCallback in thumb2
           Product: libraries
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Backend: ARM
        AssignedTo: unassignedbugs at nondot.org
        ReportedBy: nicholas at mxc.ca
                CC: llvmbugs at cs.uiuc.edu

This inline-asm in ARMJITInfo.cpp's ARMCompilationCallback:

    // Return to the (newly modified) stub to invoke the real function.
    // The above twiddling of the saved return addresses allows us to
    // deallocate everything, including the LR the stub saved, all in one
    // pop instruction.
    "ldmia  sp!, {r0, r1, r2, r3, lr, pc}\n"

does not assemble as thumb2:

llvm[3]: Compiling ARMJITInfo.cpp for Release-Asserts build
/tmp/ccWGkQ6d.s: Assembler messages:
/tmp/ccWGkQ6d.s:28: Error: LR and PC should not both be in register list --
`ldmia sp!,{r0,r1,r2,r3,lr,pc}'
make[3]: *** [/home/nlewycky/llvm/lib/Target/ARM/Release-Asserts/ARMJITInfo.o]
Error 1

with '-Os -mthumb' flags to gcc instead of -O2.

Configure bugmail: http://llvm.org/bugs/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

More information about the llvm-bugs mailing list