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| author | Kazu Hirata <kazu@cs.umass.edu> | 2004-12-03 07:38:39 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2004-12-03 07:38:39 +0000 |
| commit | a18428f344e55707ac6ea630195e491677a155fe (patch) | |
| tree | a742595d8b3287073662c8372dfcf433adc9568a /gcc | |
| parent | 7bd3a4933029a0d65da2aa8a585cfcf7f9789516 (diff) | |
| download | gcc-a18428f344e55707ac6ea630195e491677a155fe.zip gcc-a18428f344e55707ac6ea630195e491677a155fe.tar.gz gcc-a18428f344e55707ac6ea630195e491677a155fe.tar.bz2 | |
tree-ssa-dom.c (record_equivalences_from_phis): Remove an "if" whose condition is always true.
* tree-ssa-dom.c (record_equivalences_from_phis): Remove an
"if" whose condition is always true.
From-SVN: r91676
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-dom.c | 29 |
2 files changed, 17 insertions, 17 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 42c3c20..6298db4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-12-03 Kazu Hirata <kazu@cs.umass.edu> + + * tree-ssa-dom.c (record_equivalences_from_phis): Remove an + "if" whose condition is always true. + 2004-12-02 Stan Shebs <shebs@apple.com> * config/rs6000/rs6000.c (rs6000_override_options): Make 64-bit diff --git a/gcc/tree-ssa-dom.c b/gcc/tree-ssa-dom.c index a2d1459..cce0412 100644 --- a/gcc/tree-ssa-dom.c +++ b/gcc/tree-ssa-dom.c @@ -1177,23 +1177,18 @@ record_equivalences_from_phis (basic_block bb) { tree t = PHI_ARG_DEF (phi, i); - if (TREE_CODE (t) == SSA_NAME || is_gimple_min_invariant (t)) - { - /* Ignore alternatives which are the same as our LHS. */ - if (operand_equal_for_phi_arg_p (lhs, t)) - continue; - - /* If we have not processed an alternative yet, then set - RHS to this alternative. */ - if (rhs == NULL) - rhs = t; - /* If we have processed an alternative (stored in RHS), then - see if it is equal to this one. If it isn't, then stop - the search. */ - else if (! operand_equal_for_phi_arg_p (rhs, t)) - break; - } - else + /* Ignore alternatives which are the same as our LHS. */ + if (operand_equal_for_phi_arg_p (lhs, t)) + continue; + + /* If we have not processed an alternative yet, then set + RHS to this alternative. */ + if (rhs == NULL) + rhs = t; + /* If we have processed an alternative (stored in RHS), then + see if it is equal to this one. If it isn't, then stop + the search. */ + else if (! operand_equal_for_phi_arg_p (rhs, t)) break; } |