[Bug middle-end/51279] xplor-nih-2.27/nmrPot/solnScatPot.cc ICEs on -O1 -funroll-loops

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51279

--- Comment #4 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-11-24 01:36:48 UTC ---
Caused by...


r181014 | jakub | 2011-11-05 15:58:37 -0400 (Sat, 05 Nov 2011) | 23 lines

        PR tree-optimization/50693
        * tree-cfg.c (gimple_can_merge_blocks_p): Allow merging with
        non-forced user labels.
        (gimple_merge_blocks): Turn non-forced user labels into
        debug bind stmt with the label as first operand and reset value.
        (gimple_duplicate_bb): Don't duplicate label debug stmts.
        * dwarf2out.c (gen_label_die): Handle NOTE_INSN_DELETED_DEBUG_LABEL.
        * final.c (final_scan_insn): Likewise.
        (rest_of_clean_state): Don't dump NOTE_INSN_DELETED_DEBUG_LABEL.
        * var-tracking.c (debug_label_num): New variable.
        (delete_debug_insns): Don't delete DEBUG_INSNs for LABEL_DECLs,
        instead turn them into NOTE_INSN_DELETED_DEBUG_LABEL notes.
        * cfglayout.c (skip_insns_after_block, duplicate_insn_chain): Handle
        NOTE_INSN_DELETED_DEBUG_LABEL.
        (duplicate_insn_chain): Don't duplicate LABEL_DECL DEBUG_INSNs.
        * insn-notes.def (DELETED_DEBUG_LABEL): New note kind.
        * print-rtl.c (print_rtx): Handle NOTE_INSN_DELETED_DEBUG_LABEL.
        * gengtype.c (adjust_field_rtx_def): Likewise.
        * config/i386/i386.c (ix86_output_function_epilogue): For MachO
        clear CODE_LABEL_NUMBER of NOTE_INSN_DELETED_DEBUG_LABEL
        if their are at the end of function and nop hasn't been emitted.
        * config/rs6000/rs6000.c (rs6000_output_function_epilogue): Likewise.