[Bug rtl-optimization/54127] [4.7/4.8 Regression] ICE in maybe_record_trace_start with asm goto, --target=powerpc-unknown-linux-gnu

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54127



--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-11-13 
07:23:56 UTC ---

Author: jakub

Date: Tue Nov 13 07:23:51 2012

New Revision: 193470



URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=193470

Log:

    PR rtl-optimization/54127

    * cfgrtl.c (force_nonfallthru_and_redirect): When redirecting

    asm goto labels from BB_HEAD (e->dest) to target bb, decrement

    LABEL_NUSES of BB_HEAD (e->dest) and increment LABEL_NUSES of

    BB_HEAD (target) appropriately and adjust JUMP_LABEL and/or

    REG_LABEL_TARGET and REG_LABEL_OPERAND.



    * gcc.dg/torture/pr54127.c: New test.



Added:

    trunk/gcc/testsuite/gcc.dg/torture/pr54127.c

Modified:

    trunk/gcc/ChangeLog

    trunk/gcc/cfgrtl.c

    trunk/gcc/testsuite/ChangeLog