[Bug target/42427] New: invalid assembly code for 301.apsi for -fnon-call-exceptions

["janis at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

GCC trunk gets a ICE when building SPEC CPU2000 test 301.apsi with "-O2
-fnon-call-exceptions -fpeel-loops -fexceptions", as demonstrated by this
minimized testcase:

      SUBROUTINE TEST(HELP,WM,NZ)
      IMPLICIT REAL*8 (A-H, O-Z)
      REAL*8 HELP(NZ)
      COMPLEX*16 WM(NZ)

      DO K=1,NZ
         ZNEW=ABS(WM(K))
         ZOLD=HELP(K)
         HELP(K)=ZNEW
      ENDDO
      RETURN
      END

elm3b149% /home/janis/tools/gcc-trunk-anonsvn/bin/gfortran -c -O2 -fexceptions
-fnon-call-exceptions -fpeel-loops bug.f
/tmp/ccZKTZkM.s: Assembler messages:
/tmp/ccZKTZkM.s:38: Error: syntax error; found `,' but expected `('
/tmp/ccZKTZkM.s:38: Error: junk at end of line: `,3
The assembly code here is:

        lwz 4,4(9)
        lwz 3,9,3           <---- line 38
        lwz 5,8(9)
        lwz 6,12(9)
        bl cabs

The failure begins with this patch:

    http://gcc.gnu.org/viewcvs?view=rev&rev=154688

    r154688 | bernds | 2009-11-26 21:41:42 +0000 (Thu, 26 Nov 2009)

I ran into this by running CPU2000 with a number of sets of options generated
by a tool called allpairs.


-- 
           Summary: invalid assembly code for 301.apsi for -fnon-call-
                    exceptions
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: target
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: janis at gcc dot gnu dot org
GCC target triplet: powerpc64-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42427