[LLVMbugs] [Bug 5314] [Linux Kernel] Inline asm asmprinter crash with P modifier

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=5314

Rob <rob1weld at aol.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
                 CC|                            |rob1weld at aol.com
         Resolution|FIXED                       |

--- Comment #5 from Rob <rob1weld at aol.com> 2011-01-05 10:41:28 CST ---
(In reply to comment #4)
> Crash fixed in 108545.   Generated code made correct in 108548 (I think).

I downloaded the Attachment and I can reproduce this BR, I 'REOPENED' Tiago's
BR to avoid a Dupe:


# uname -a
Linux debian 2.6.33.7 #1 SMP PREEMPT Tue Jan 4 19:10:07 PST 2011 i686 GNU/Linux


# cd /usr/local/linux-2.6.33.7
# make-kpkg clean
# MAKEFLAGS="CC=llvm-gcc-4.2" make-kpkg --initrd kernel_image
...
  HOSTCC  scripts/kallsyms
  HOSTCC  scripts/pnmtologo
  HOSTCC  scripts/conmakehash
  HOSTCC  scripts/bin2c
  CC      init/main.o
UNREACHABLE executed!
init/main.c:897: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://llvm.org/bugs/> for instructions.
make[2]: *** [init/main.o] Error 1
make[1]: *** [init] Error 2
make[1]: Leaving directory `/usr/local/linux-2.6.33.7'
make: *** [debian/stamp/build/kernel] Error 2
root at debian:/usr/local/linux-2.6.33.7#

(Note: Line init/main.c:897 is EOF - nothing to see but "}")


# llc-2.7 -version
Low Level Virtual Machine (http://llvm.org/):
  llvm version 2.7 (Debian 2.7-6)
  Optimized build.
  Built Sep 23 2010 (21:14:53).
  Host: i386-pc-linux-gnu
  Host CPU: athlon64
...


# llc-2.7 t.bc -o -
    .file    "t.bc"
    .text
    .globl    init_post
    .type    init_post, at function
init_post:                              # @init_post
# BB#0:                                 # %entry
    subl    $4, %esp
    xorb    %al, %al
    testb    %al, %al
    movl    $per_cpu__current_task, %eax
    #APP
    movl %fs:UNREACHABLE executed!
0  libLLVM-2.7.so.1 0xb7554c08
Stack dump:
0.    Program arguments: llc-2.7 t.bc -o - 
1.    Running pass 'X86 AT&T-Style Assembly Printer' on function '@init_post'
Aborted


I will try and grab LLVM's Trunk and see if _another_ BR (and associated fix)
has resolved this.


Thanks,
Rob

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