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| author | Vladimir Makarov <vmakarov@redhat.com> | 2009-03-26 19:21:18 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2009-03-26 19:21:18 +0000 |
| commit | d5f89b53026d0705832786606216a7b3a08c4478 (patch) | |
| tree | 2ef34201f4df14c498170cd86eb9e4b7f45f141f /gcc/reload1.c | |
| parent | 359b867255469491a68466f8d4258aa63ef2ff5c (diff) | |
| download | gcc-d5f89b53026d0705832786606216a7b3a08c4478.zip gcc-d5f89b53026d0705832786606216a7b3a08c4478.tar.gz gcc-d5f89b53026d0705832786606216a7b3a08c4478.tar.bz2 | |
re PR rtl-optimization/39522 (fix for PR37514 gives FAIL: gcc.c-torture/execute/stdarg-3.c compilation, -O3 -fomit-frame-pointer -funroll-loops (internal compiler error))
2009-03-26 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/39522
* reload1.c (reload_as_needed): Invalidate reg_last_reload_reg too
when reg_reloaded_valid is set.
From-SVN: r145093
Diffstat (limited to 'gcc/reload1.c')
| -rw-r--r-- | gcc/reload1.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/gcc/reload1.c b/gcc/reload1.c index 9a485f0..fcf0bd3 100644 --- a/gcc/reload1.c +++ b/gcc/reload1.c @@ -4367,29 +4367,39 @@ reload_as_needed (int live_known) SET_REGNO_REG_SET (®_has_output_reload, REGNO (XEXP (in_reg, 0))); } - else if ((code == PRE_INC || code == PRE_DEC - || code == POST_INC || code == POST_DEC)) + else if (code == PRE_INC || code == PRE_DEC + || code == POST_INC || code == POST_DEC) { - int in_hard_regno; int in_regno = REGNO (XEXP (in_reg, 0)); if (reg_last_reload_reg[in_regno] != NULL_RTX) { + int in_hard_regno; + bool forget_p = true; + in_hard_regno = REGNO (reg_last_reload_reg[in_regno]); - gcc_assert (TEST_HARD_REG_BIT (reg_reloaded_valid, - in_hard_regno)); - for (x = old_prev ? NEXT_INSN (old_prev) : insn; - x != old_next; - x = NEXT_INSN (x)) - if (x == reg_reloaded_insn[in_hard_regno]) - break; + if (TEST_HARD_REG_BIT (reg_reloaded_valid, + in_hard_regno)) + { + for (x = old_prev ? NEXT_INSN (old_prev) : insn; + x != old_next; + x = NEXT_INSN (x)) + if (x == reg_reloaded_insn[in_hard_regno]) + { + forget_p = false; + break; + } + } /* If for some reasons, we didn't set up reg_last_reload_reg in this insn, invalidate inheritance from previous insns for the incremented/decremented register. Such registers will be not in - reg_has_output_reload. */ - if (x == old_next) + reg_has_output_reload. Invalidate it + also if the corresponding element in + reg_reloaded_insn is also + invalidated. */ + if (forget_p) forget_old_reloads_1 (XEXP (in_reg, 0), NULL_RTX, NULL); } |