diff options
| author | Richard Sandiford <richard.sandiford@linaro.org> | 2017-08-30 15:28:18 +0000 |
|---|---|---|
| committer | Richard Sandiford <rsandifo@gcc.gnu.org> | 2017-08-30 15:28:18 +0000 |
| commit | 33845ca96bdaa9510cfb041540a45c3e8be6c477 (patch) | |
| tree | bc69488d125557e352f5d02d91a2fdac5505faa3 /gcc/df-scan.c | |
| parent | bd4288c02b487cc8a9afcfa9c21bfe594a78e26d (diff) | |
Drop df_ from df_read_modify_subreg_p
...it's really a general RTL predicate, rather than something that depends
on the DF state. Thanks to Segher for the suggestion.
2017-08-30 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
* df.h (df_read_modify_subreg_p): Remove in favor of...
* rtl.h (read_modify_subreg_p): ...this new function. Take a
const_rtx instead of an rtx.
* cprop.c (local_cprop_find_used_regs): Update accordingly.
* df-problems.c (df_word_lr_mark_ref): Likewise.
* ira-lives.c (mark_pseudo_reg_live): Likewise.
(mark_pseudo_reg_dead): Likewise.
(mark_ref_dead): Likewise.
* reginfo.c (init_subregs_of_mode): Likewise.
* sched-deps.c (sched_analyze_1): Likewise.
* df-scan.c (df_def_record_1): Likewise.
(df_uses_record): Likewise.
(df_read_modify_subreg_p): Remove in favor of...
* rtlanal.c (read_modify_subreg_p): ...this new function. Take a
const_rtx instead of an rtx.
From-SVN: r251537
Diffstat (limited to 'gcc/df-scan.c')
| -rw-r--r-- | gcc/df-scan.c | 22 |
1 files changed, 2 insertions, 20 deletions
diff --git a/gcc/df-scan.c b/gcc/df-scan.c index dde6d15d07b..8ab3d716ea2 100644 --- a/gcc/df-scan.c +++ b/gcc/df-scan.c @@ -2623,24 +2623,6 @@ df_ref_record (enum df_ref_class cl, } -/* A set to a non-paradoxical SUBREG for which the number of word_mode units - covered by the outer mode is smaller than that covered by the inner mode, - is a read-modify-write operation. - This function returns true iff the SUBREG X is such a SUBREG. */ - -bool -df_read_modify_subreg_p (rtx x) -{ - unsigned int isize, osize; - if (GET_CODE (x) != SUBREG) - return false; - isize = GET_MODE_SIZE (GET_MODE (SUBREG_REG (x))); - osize = GET_MODE_SIZE (GET_MODE (x)); - return isize > osize - && isize > REGMODE_NATURAL_SIZE (GET_MODE (SUBREG_REG (x))); -} - - /* Process all the registers defined in the rtx pointed by LOC. Autoincrement/decrement definitions will be picked up by df_uses_record. Any change here has to be matched in df_find_hard_reg_defs_1. */ @@ -2696,7 +2678,7 @@ df_def_record_1 (struct df_collection_rec *collection_rec, } else if (GET_CODE (dst) == SUBREG && REG_P (SUBREG_REG (dst))) { - if (df_read_modify_subreg_p (dst)) + if (read_modify_subreg_p (dst)) flags |= DF_REF_READ_WRITE | DF_REF_PARTIAL; flags |= DF_REF_SUBREG; @@ -2910,7 +2892,7 @@ df_uses_record (struct df_collection_rec *collection_rec, switch (GET_CODE (dst)) { case SUBREG: - if (df_read_modify_subreg_p (dst)) + if (read_modify_subreg_p (dst)) { df_uses_record (collection_rec, &SUBREG_REG (dst), DF_REF_REG_USE, bb, insn_info, |