diff options
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/flow.c | 9 |
2 files changed, 13 insertions, 3 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index a942946..3bb68a3 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2000-05-10 Nick Clifton <nickc@redhat.com> + + * flow.c (find_auto_inc): Do not bias REG_N_REFS by loop_depth + when optimising for size. + (mark_used_regs:) Ditto. + (try_pre_increment_1): Ditto. + 2000-05-10 Zack Weinberg <zack@wolery.cumb.org> * cppexp.c (lex): Use %.*s to print non-NUL-terminated string. @@ -4854,7 +4854,8 @@ find_auto_inc (pbi, x, insn) /* Count an extra reference to the reg. When a reg is incremented, spilling it is worse, so we want to make that less likely. */ - REG_N_REFS (regno) += pbi->bb->loop_depth + 1; + REG_N_REFS (regno) += (optimize_size ? 1 + : pbi->bb->loop_depth + 1); /* Count the increment as a setting of the register, even though it isn't a SET in rtl. */ @@ -4935,7 +4936,8 @@ mark_used_reg (pbi, reg, cond, insn) REG_BASIC_BLOCK (regno) = REG_BLOCK_GLOBAL; /* Count (weighted) number of uses of each reg. */ - REG_N_REFS (regno) += pbi->bb->loop_depth + 1; + REG_N_REFS (regno) += (optimize_size ? 1 + : pbi->bb->loop_depth + 1); } } @@ -5353,7 +5355,8 @@ try_pre_increment_1 (pbi, insn) less likely. */ if (regno >= FIRST_PSEUDO_REGISTER) { - REG_N_REFS (regno) += pbi->bb->loop_depth + 1; + REG_N_REFS (regno) += (optimize_size ? 1 + : pbi->bb->loop_depth + 1); REG_N_SETS (regno)++; } return 1; |