------- Comment #10 from mueller at gcc dot gnu dot org 2006-03-13 16:17 ------- it looks to me that this commit exposed/introduced the ICE:
r111300 | dberlin | 2006-02-20 14:38:01 +0100 (Mon, 20 Feb 2006) | 22 lines Changed paths: M /trunk/gcc/ChangeLog M /trunk/gcc/passes.c M /trunk/gcc/tree-flow.h M /trunk/gcc/tree-pass.h M /trunk/gcc/tree-sra.c M /trunk/gcc/tree-ssa-alias.c M /trunk/gcc/tree-ssa-forwprop.c M /trunk/gcc/tree-ssa-operands.c M /trunk/gcc/tree.h 2006-02-20 Daniel Berlin <[EMAIL PROTECTED]> * tree.h (struct tree_memory_tag): Add is_used_alone member. (TMT_USED_ALONE): New macro. * tree-pass.h (PROP_tmt_usage): New property. (TODO_update_tmt_usage): New todo. * tree-ssa-alias.c (updating_used_alone): New variable. (recalculate_used_alone): New function. (compute_may_aliases): Set updating_used_alone, call recalculate_used_alone. * tree-sra.c (pass_sra): Note that this pass destroys PROP_tmt_usage, and add TODO_update_tmt_usage. * tree-ssa-forwprop.c (pass_forwprop): Ditto. * tree-flow.h (updating_used_alone): Prototype. (recalculate_used_alone): Ditto. * passes.c (execute_todo): Add code to set updating_used_alone, and call recalculate. * tree-ssa-operands.c (add_virtual_operand): Only append bare def for clobber if used alone, and add assert to verify used_alone status. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26626