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| author | Po-Chun Chang <pchang9@cs.wisc.edu> | 2013-07-08 09:05:38 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2013-07-08 09:05:38 +0000 |
| commit | 75fefa91634deb3b00ee0b06cc07c35ceca7e491 (patch) | |
| tree | 8389a6f45bfaeef2c7b2bc3175de374662776200 /gcc/combine.c | |
| parent | 8140c06592fe11cfb82c54f0dc467705381a8785 (diff) | |
| download | gcc-75fefa91634deb3b00ee0b06cc07c35ceca7e491.zip gcc-75fefa91634deb3b00ee0b06cc07c35ceca7e491.tar.gz gcc-75fefa91634deb3b00ee0b06cc07c35ceca7e491.tar.bz2 | |
re PR rtl-optimization/57786 (wasted work in distribute_notes)
PR rtl-optimization/57786
* combine.c (distribute_notes) <case REG_DEAD>: Change all_used to bool
and break out of the loop when it is set to false.
From-SVN: r200776
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index ca311ff..fc94c68 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -13580,14 +13580,17 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2, rtx elim_i2, && hard_regno_nregs[regno][GET_MODE (XEXP (note, 0))] > 1) { unsigned int endregno = END_HARD_REGNO (XEXP (note, 0)); - int all_used = 1; + bool all_used = true; unsigned int i; for (i = regno; i < endregno; i++) if ((! refers_to_regno_p (i, i + 1, PATTERN (place), 0) && ! find_regno_fusage (place, USE, i)) || dead_or_set_regno_p (place, i)) - all_used = 0; + { + all_used = false; + break; + } if (! all_used) { @@ -13631,7 +13634,6 @@ distribute_notes (rtx notes, rtx from_insn, rtx i3, rtx i2, rtx elim_i2, break; } } - } place = 0; |