diff options
| author | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-17 21:10:19 +0000 |
|---|---|---|
| committer | ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> | 2010-11-17 21:10:19 +0000 |
| commit | 8b52f64ecc5a7f89b891bb608c6b9165ce847d1e (patch) | |
| tree | 1ed791d76477d1f0e296456bed57934afc778f47 /gcc/postreload.c | |
| parent | 601d6e05f3062752c70b3da325d03fd3b34ca6b0 (diff) | |
| download | gcc-8b52f64ecc5a7f89b891bb608c6b9165ce847d1e.tar.gz | |
* postreload.c (reload_combine): Call control_flow_insn_p only once.
Reverse backward loop. Fix formatting issues.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@166878 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/postreload.c')
| -rw-r--r-- | gcc/postreload.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/gcc/postreload.c b/gcc/postreload.c index 4d3bae4f320..1772c9e058d 100644 --- a/gcc/postreload.c +++ b/gcc/postreload.c @@ -1224,7 +1224,6 @@ static void reload_combine (void) { rtx insn, prev; - int i; basic_block bb; unsigned int r; int min_labelno, n_labels; @@ -1292,6 +1291,7 @@ reload_combine (void) for (insn = get_last_insn (); insn; insn = prev) { + bool control_flow_insn; rtx note; prev = PREV_INSN (insn); @@ -1311,7 +1311,8 @@ reload_combine (void) reload_combine_ruid++; - if (control_flow_insn_p (insn)) + control_flow_insn = control_flow_insn_p (insn); + if (control_flow_insn) last_jump_ruid = reload_combine_ruid; if (reload_combine_recognize_const_pattern (insn) @@ -1339,9 +1340,9 @@ reload_combine (void) { unsigned int i; unsigned int start_reg = REGNO (usage_rtx); - unsigned int num_regs = - hard_regno_nregs[start_reg][GET_MODE (usage_rtx)]; - unsigned int end_reg = start_reg + num_regs - 1; + unsigned int num_regs + = hard_regno_nregs[start_reg][GET_MODE (usage_rtx)]; + unsigned int end_reg = start_reg + num_regs - 1; for (i = start_reg; i <= end_reg; i++) if (GET_CODE (XEXP (link, 0)) == CLOBBER) { @@ -1352,10 +1353,9 @@ reload_combine (void) reg_state[i].use_index = -1; } } - } - if (control_flow_insn_p (insn) && GET_CODE (PATTERN (insn)) != RETURN) + if (control_flow_insn && GET_CODE (PATTERN (insn)) != RETURN) { /* Non-spill registers might be used at the call destination in some unknown fashion, so we have to mark the unknown use. */ @@ -1367,20 +1367,19 @@ reload_combine (void) else live = &ever_live_at_start; - for (i = FIRST_PSEUDO_REGISTER - 1; i >= 0; --i) - if (TEST_HARD_REG_BIT (*live, i)) - reg_state[i].use_index = -1; + for (r = 0; r < FIRST_PSEUDO_REGISTER; r++) + if (TEST_HARD_REG_BIT (*live, r)) + reg_state[r].use_index = -1; } - reload_combine_note_use (&PATTERN (insn), insn, - reload_combine_ruid, NULL_RTX); + reload_combine_note_use (&PATTERN (insn), insn, reload_combine_ruid, + NULL_RTX); + for (note = REG_NOTES (insn); note; note = XEXP (note, 1)) { - if (REG_NOTE_KIND (note) == REG_INC - && REG_P (XEXP (note, 0))) + if (REG_NOTE_KIND (note) == REG_INC && REG_P (XEXP (note, 0))) { int regno = REGNO (XEXP (note, 0)); - reg_state[regno].store_ruid = reload_combine_ruid; reg_state[regno].real_store_ruid = reload_combine_ruid; reg_state[regno].use_index = -1; |