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| author | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-06-15 00:47:53 +0000 |
|---|---|---|
| committer | rth <rth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2002-06-15 00:47:53 +0000 |
| commit | fa81344030faf9d4f501a535dac42d6fdb58000a (patch) | |
| tree | 1ac5195ffc0714d0aa1bded32ae53682474e6221 /gcc/loop.c | |
| parent | 77a5ccfcd868c74a5afbc618cf6293819898023b (diff) | |
| download | ppe42-gcc-fa81344030faf9d4f501a535dac42d6fdb58000a.tar.gz ppe42-gcc-fa81344030faf9d4f501a535dac42d6fdb58000a.zip | |
* loop.c (for_each_insn_in_loop): Fix formatting and comments.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54633 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/loop.c')
| -rw-r--r-- | gcc/loop.c | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/gcc/loop.c b/gcc/loop.c index 85c9c9fef10..d3b62af6ceb 100644 --- a/gcc/loop.c +++ b/gcc/loop.c @@ -4247,8 +4247,8 @@ static rtx addr_placeholder; LOOP and INSN parameters pass MAYBE_MULTIPLE and NOT_EVERY_ITERATION to the callback. - NOT_EVERY_ITERATION if current insn is not executed at least once for every - loop iteration except for the last one. + NOT_EVERY_ITERATION is 1 if current insn is not known to be executed at + least once for every loop iteration except for the last one. MAYBE_MULTIPLE is 1 if current insn may be executed more than once for every loop iteration. @@ -4258,8 +4258,6 @@ for_each_insn_in_loop (loop, fncall) struct loop *loop; loop_insn_callback fncall; { - /* This is 1 if current insn is not executed at least once for every loop - iteration. */ int not_every_iteration = 0; int maybe_multiple = 0; int past_loop_latch = 0; @@ -4271,8 +4269,7 @@ for_each_insn_in_loop (loop, fncall) if (prev_nonnote_insn (loop->scan_start) != prev_nonnote_insn (loop->start)) maybe_multiple = back_branch_in_range_p (loop, loop->scan_start); - /* Scan through loop to find all possible bivs. */ - + /* Scan through loop and update NOT_EVERY_ITERATION and MAYBE_MULTIPLE. */ for (p = next_insn_in_loop (loop, loop->scan_start); p != NULL_RTX; p = next_insn_in_loop (loop, p)) @@ -4329,9 +4326,9 @@ for_each_insn_in_loop (loop, fncall) This can be any kind of jump, since we want to know if insns will be executed if the loop is executed. */ && !(JUMP_LABEL (p) == loop->top - && ((NEXT_INSN (NEXT_INSN (p)) == loop->end - && any_uncondjump_p (p)) - || (NEXT_INSN (p) == loop->end && any_condjump_p (p))))) + && ((NEXT_INSN (NEXT_INSN (p)) == loop->end + && any_uncondjump_p (p)) + || (NEXT_INSN (p) == loop->end && any_condjump_p (p))))) { rtx label = 0; |
