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flow.c: Grammar check and clarify a lot of comments.

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* flow.c: Grammar check and clarify a lot of comments.
        (try_simplify_condjump): Rename variables to be clearer.
        (try_forward_edges): Skip complex and fallthru edges.
        Rearrange tests to avoid duplicate checks.
        (flow_find_cross_jump): Likewise.
        (outgoing_edges_match): Allow match if neither branch has
        probability data.  Loosen probability match to 5%.
        (try_crossjump_to_edge): Hoist repeated indirection into
        local variables.
        (try_crossjump_bb): Don't check complex edges.  Eliminate
        redundant crossjump tests.
        (try_optimize_cfg): Fix use of bool.  Reorganize cheaper
        checks before more expensive checks.

From-SVN: r44257
This commit is contained in:
Richard Henderson 2001-07-23 00:03:34 -07:00 committed by Richard Henderson
parent 18fee3ee73
commit b02eea61ce
2 changed files with 420 additions and 288 deletions
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@ -1,3 +1,19 @@
2001-07-22 Richard Henderson <rth@redhat.com>
* flow.c: Grammar check and clarify a lot of comments.
(try_simplify_condjump): Rename variables to be clearer.
(try_forward_edges): Skip complex and fallthru edges.
Rearrange tests to avoid duplicate checks.
(flow_find_cross_jump): Likewise.
(outgoing_edges_match): Allow match if neither branch has
probability data. Loosen probability match to 5%.
(try_crossjump_to_edge): Hoist repeated indirection into
local variables.
(try_crossjump_bb): Don't check complex edges. Eliminate
redundant crossjump tests.
(try_optimize_cfg): Fix use of bool. Reorganize cheaper
checks before more expensive checks.
2001-07-22 Richard Henderson <rth@redhat.com>
* fold-const.c (fold): Test vs FLOAT_TYPE_P instead of

692
gcc/flow.c
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