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| author | Eric Botcazou <ebotcazou@adacore.com> | 2010-10-13 21:43:42 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2010-10-13 21:43:42 +0000 |
| commit | 8908df28a64f163b2215fccff7940e6e2b482615 (patch) | |
| tree | bdb90237b6cec0a8cd6c6ba17503d4263d5cbe5f /gcc/ira-costs.c | |
| parent | 1e27129f2e48fd6752e6d329e1294ed1e922df6d (diff) | |
| download | gcc-8908df28a64f163b2215fccff7940e6e2b482615.zip gcc-8908df28a64f163b2215fccff7940e6e2b482615.tar.gz gcc-8908df28a64f163b2215fccff7940e6e2b482615.tar.bz2 | |
re PR rtl-optimization/45912 (Patch for PR tree-optimization/44972 caused 2500+ FAILs on Solaris 2/SPARC)
PR rtl-optimization/45912
* ira-costs.c (ira_tune_allocno_costs_and_cover_classes): Test the
regno of registers instead of their index to compute the alignment.
From-SVN: r165437
Diffstat (limited to 'gcc/ira-costs.c')
| -rw-r--r-- | gcc/ira-costs.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/gcc/ira-costs.c b/gcc/ira-costs.c index 3d8298d..db9ed7c 100644 --- a/gcc/ira-costs.c +++ b/gcc/ira-costs.c @@ -1789,15 +1789,14 @@ ira_tune_allocno_costs_and_cover_classes (void) if (min_cost != INT_MAX) ALLOCNO_COVER_CLASS_COST (a) = min_cost; - /* Some targets allow pseudos to be allocated to unaligned - sequences of hard registers. However, selecting an unaligned - sequence can unnecessarily restrict later allocations. So - increase the cost of unaligned hard regs to encourage the use - of aligned hard regs. */ + /* Some targets allow pseudos to be allocated to unaligned sequences + of hard registers. However, selecting an unaligned sequence can + unnecessarily restrict later allocations. So increase the cost of + unaligned hard regs to encourage the use of aligned hard regs. */ { - int nregs, index; + const int nregs = ira_reg_class_nregs[cover_class][ALLOCNO_MODE (a)]; - if ((nregs = ira_reg_class_nregs[cover_class][ALLOCNO_MODE (a)]) > 1) + if (nregs > 1) { ira_allocate_and_set_costs (&ALLOCNO_HARD_REG_COSTS (a), cover_class, @@ -1805,10 +1804,10 @@ ira_tune_allocno_costs_and_cover_classes (void) reg_costs = ALLOCNO_HARD_REG_COSTS (a); for (j = n - 1; j >= 0; j--) { - if (j % nregs != 0) + regno = ira_non_ordered_class_hard_regs[cover_class][j]; + if ((regno % nregs) != 0) { - regno = ira_non_ordered_class_hard_regs[cover_class][j]; - index = ira_class_hard_reg_index[cover_class][regno]; + int index = ira_class_hard_reg_index[cover_class][regno]; ira_assert (index != -1); reg_costs[index] += ALLOCNO_FREQ (a); } |