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| author | Bernd Schmidt <bernds@codesourcery.com> | 2011-07-13 10:18:32 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2011-07-13 10:18:32 +0000 |
| commit | a19af9c4e401e168f46180adab9210a6fdb1757e (patch) | |
| tree | fb8bf8be019b0110f5a291264ebbc7b8c6c33ab7 /gcc/haifa-sched.c | |
| parent | 2d1efe2d2d19872257bffb1561838805eb5f4fab (diff) | |
| download | gcc-a19af9c4e401e168f46180adab9210a6fdb1757e.zip gcc-a19af9c4e401e168f46180adab9210a6fdb1757e.tar.gz gcc-a19af9c4e401e168f46180adab9210a6fdb1757e.tar.bz2 | |
sched-int.h (struct _dep): Add member cost.
* sched-int.h (struct _dep): Add member cost.
(DEP_COST, UNKNOWN_DEP_COST): New macros.
* sched-deps.c (init_dep_1): Initialize DEP_COST.
* haifa-sched.c (dep_cost_1): Use and set DEP_COST.
(sched_change_pattern): Reset it for dependent insns.
From-SVN: r176226
Diffstat (limited to 'gcc/haifa-sched.c')
| -rw-r--r-- | gcc/haifa-sched.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/haifa-sched.c b/gcc/haifa-sched.c index f4caecd..bc36d07 100644 --- a/gcc/haifa-sched.c +++ b/gcc/haifa-sched.c @@ -854,6 +854,9 @@ dep_cost_1 (dep_t link, dw_t dw) rtx used = DEP_CON (link); int cost; + if (DEP_COST (link) != UNKNOWN_DEP_COST) + return DEP_COST (link); + /* A USE insn should never require the value used to be computed. This allows the computation of a function's result and parameter values to overlap the return and call. We don't care about the @@ -911,6 +914,7 @@ dep_cost_1 (dep_t link, dw_t dw) cost = 0; } + DEP_COST (link) = cost; return cost; } @@ -4865,11 +4869,21 @@ fix_recovery_deps (basic_block rec) void sched_change_pattern (rtx insn, rtx new_pat) { + sd_iterator_def sd_it; + dep_t dep; int t; t = validate_change (insn, &PATTERN (insn), new_pat, 0); gcc_assert (t); dfa_clear_single_insn_cache (insn); + + for (sd_it = sd_iterator_start (insn, (SD_LIST_FORW | SD_LIST_BACK + | SD_LIST_RES_BACK)); + sd_iterator_cond (&sd_it, &dep);) + { + DEP_COST (dep) = UNKNOWN_DEP_COST; + sd_iterator_next (&sd_it); + } } /* Change pattern of INSN to NEW_PAT. Invalidate cached haifa |