[Bug target/53315] New: simple xtest program generates ICE

[andi-gcc at firstfloor dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53315

             Bug #: 53315
           Summary: simple xtest program generates ICE
    Classification: Unclassified
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: andi-...@firstfloor.org


gcc version 4.8.0 20120510 (experimental) (GCC) 
#include <immintrin.h>

main()
{
        int flag = -1;
        unsigned status;

        if ((status = _xbegin()) == _XBEGIN_STARTED) {
                flag = _xtest();
                _xend();
        } else
                printf("abort %x\n", status);
        printf("%d\n" , flag);
        printf("%d\n", _xtest());
}


gives

xtest.c: In function 'main':
xtest.c:12:3: warning: incompatible implicit declaration of built-in function
'printf' [enabled by default]
   printf("abort %x\n", status);
   ^
xtest.c:15:1: error: unable to generate reloads for:
 }
 ^
(jump_insn 7 6 8 2 (parallel [
            (set (pc)
                (if_then_else (ne (unspec [
                                (const_int 0 [0])
                            ] UNSPEC_XBEGIN_ABORT)
                        (const_int 0 [0]))
                    (label_ref 8)
                    (pc)))
            (set (reg:SI 4 si [63])
                (unspec_volatile:SI [
                        (reg:SI 3 bx [64])
                    ] UNSPECV_XBEGIN))
        ])
/pkg/gcc-4.8-120510/lib64/gcc/x86_64-unknown-linux-gnu/4.8.0/include/rtmintrin.h:50
978 {xbegin_1}
     (nil)
 -> 8)
xtest.c:15:1: internal compiler error: in find_reloads, at reload.c:3825