auto-inc-dec.c
50.6 KB
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gOlogy: fix debug binds in auto-inc-dec · 91c03124
As auto_inc_dec pass combines incs and mems from different insns, it often causes regs to temporarily hold a value different from the one it would before the transformation. Debug insns within that range would therefore end up binding to the wrong expression after the transformation. This patch adjusts debug binds in the affected range. for gcc/ChangeLog * auto-inc-dec.c: Include valtrack.h. Improve comments. (reg_next_debug_use): New. (attempt_change): Propagate adjusted expression into affected debug insns. (merge_in_block): Track uses in debug insns. (pass_inc_dec::execute): Allocate and release reg_next_debug_use. From-SVN: r265828
Alexandre Oliva committed