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| author | Uros Bizjak <uros@gcc.gnu.org> | 2011-05-09 14:11:25 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2011-05-09 14:11:25 +0200 |
| commit | eb1485a68b1413b3db7c2cb67efb378658c4ff37 (patch) | |
| tree | d5aea3efc3350bea77719c98422be119161392a7 /gcc/ira-lives.c | |
| parent | c46d001a91568c9fd19ee74c73d34f87ebd4aef5 (diff) | |
| download | gcc-eb1485a68b1413b3db7c2cb67efb378658c4ff37.tar.gz | |
re PR rtl-optimization/48927 (Issues with "enable" attribute and IRA register preferences)
PR rtl-optimization/48927
* ira-conflicts.c (commutative_constraint_p): Use
recog_data.alternative_enabled_p to disable alternatives where
"enabled" attribute is false.
(get_dup_num): Ditto.
* ira-lives.c (single_reg_class): Ditto.
(ira_implicitly_set_insn_hard_regs): Ditto.
From-SVN: r173568
Diffstat (limited to 'gcc/ira-lives.c')
| -rw-r--r-- | gcc/ira-lives.c | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/gcc/ira-lives.c b/gcc/ira-lives.c index 8eb9c03190e..d308bb39de2 100644 --- a/gcc/ira-lives.c +++ b/gcc/ira-lives.c @@ -726,18 +726,21 @@ mark_hard_reg_early_clobbers (rtx insn, bool live_p) static enum reg_class single_reg_class (const char *constraints, rtx op, rtx equiv_const) { - int ignore_p; + int curr_alt, c; + bool ignore_p; enum reg_class cl, next_cl; - int c; cl = NO_REGS; - for (ignore_p = false; + for (ignore_p = false, curr_alt = 0; (c = *constraints); constraints += CONSTRAINT_LEN (c, constraints)) - if (c == '#') + if (c == '#' || !recog_data.alternative_enabled_p[curr_alt]) ignore_p = true; else if (c == ',') - ignore_p = false; + { + curr_alt++; + ignore_p = false; + } else if (! ignore_p) switch (c) { @@ -873,7 +876,7 @@ single_reg_operand_class (int op_num) void ira_implicitly_set_insn_hard_regs (HARD_REG_SET *set) { - int i, c, regno = 0; + int i, curr_alt, c, regno = 0; bool ignore_p; enum reg_class cl; rtx op; @@ -895,11 +898,16 @@ ira_implicitly_set_insn_hard_regs (HARD_REG_SET *set) mode = (GET_CODE (op) == SCRATCH ? GET_MODE (op) : PSEUDO_REGNO_MODE (regno)); cl = NO_REGS; - for (ignore_p = false; (c = *p); p += CONSTRAINT_LEN (c, p)) - if (c == '#') + for (ignore_p = false, curr_alt = 0; + (c = *p); + p += CONSTRAINT_LEN (c, p)) + if (c == '#' || !recog_data.alternative_enabled_p[curr_alt]) ignore_p = true; else if (c == ',') - ignore_p = false; + { + curr_alt++; + ignore_p = false; + } else if (! ignore_p) switch (c) { |