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| author | Richard Sandiford <rdsandiford@googlemail.com> | 2010-08-14 19:59:13 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2010-08-14 19:59:13 +0000 |
| commit | 6d1e1a26d9b19fcdc8a8586f56df904a3a8e4730 (patch) | |
| tree | e4d87023973b6ea8dcdaaaed7bf74737c0d3fd59 /gcc/ira-lives.c | |
| parent | 73a949c0ba62310e9068fd3c89fc74672f85d282 (diff) | |
| download | gcc-6d1e1a26d9b19fcdc8a8586f56df904a3a8e4730.zip gcc-6d1e1a26d9b19fcdc8a8586f56df904a3a8e4730.tar.gz gcc-6d1e1a26d9b19fcdc8a8586f56df904a3a8e4730.tar.bz2 | |
re PR target/43358 (IRA: internal compiler error: in pool_free, at alloc-pool.c:335)
gcc/
PR rtl-optimization/43358
* ira-lives.c (process_single_reg_class_operands): Adjust the costs
of a single hard register, using simplify_subreg_regno to decide
what that register should be.
From-SVN: r163249
Diffstat (limited to 'gcc/ira-lives.c')
| -rw-r--r-- | gcc/ira-lives.c | 56 |
1 files changed, 35 insertions, 21 deletions
diff --git a/gcc/ira-lives.c b/gcc/ira-lives.c index 1ffed78..b189698 100644 --- a/gcc/ira-lives.c +++ b/gcc/ira-lives.c @@ -897,7 +897,7 @@ ira_implicitly_set_insn_hard_regs (HARD_REG_SET *set) static void process_single_reg_class_operands (bool in_p, int freq) { - int i, regno, cost; + int i, regno; unsigned int px; enum reg_class cl; rtx operand; @@ -924,32 +924,46 @@ process_single_reg_class_operands (bool in_p, int freq) if (REG_P (operand) && (regno = REGNO (operand)) >= FIRST_PSEUDO_REGISTER) { - enum machine_mode mode; enum reg_class cover_class; operand_a = ira_curr_regno_allocno_map[regno]; - mode = ALLOCNO_MODE (operand_a); cover_class = ALLOCNO_COVER_CLASS (operand_a); if (ira_class_subset_p[cl][cover_class] - && ira_class_hard_regs_num[cl] != 0 - && (ira_class_hard_reg_index[cover_class] - [ira_class_hard_regs[cl][0]]) >= 0 - && reg_class_size[cl] <= (unsigned) CLASS_MAX_NREGS (cl, mode)) + && ira_class_hard_regs_num[cl] != 0) { - int i, size; - cost - = (freq - * (in_p - ? ira_get_register_move_cost (mode, cover_class, cl) - : ira_get_register_move_cost (mode, cl, cover_class))); - ira_allocate_and_set_costs - (&ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a), cover_class, 0); - size = ira_reg_class_nregs[cover_class][mode]; - for (i = 0; i < size; i++) - ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a) - [ira_class_hard_reg_index - [cover_class][ira_class_hard_regs[cl][i]]] - -= cost; + /* View the desired allocation of OPERAND as: + + (REG:YMODE YREGNO), + + a simplification of: + + (subreg:YMODE (reg:XMODE XREGNO) OFFSET). */ + enum machine_mode ymode, xmode; + int xregno, yregno; + HOST_WIDE_INT offset; + + xmode = recog_data.operand_mode[i]; + xregno = ira_class_hard_regs[cl][0]; + ymode = ALLOCNO_MODE (operand_a); + offset = subreg_lowpart_offset (ymode, xmode); + yregno = simplify_subreg_regno (xregno, xmode, offset, ymode); + if (yregno >= 0 + && ira_class_hard_reg_index[cover_class][yregno] >= 0) + { + int cost; + + ira_allocate_and_set_costs + (&ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a), + cover_class, 0); + cost + = (freq + * (in_p + ? ira_get_register_move_cost (xmode, cover_class, cl) + : ira_get_register_move_cost (xmode, cl, + cover_class))); + ALLOCNO_CONFLICT_HARD_REG_COSTS (operand_a) + [ira_class_hard_reg_index[cover_class][yregno]] -= cost; + } } } |