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| author | Eric Botcazou <ebotcazou@adacore.com> | 2011-10-09 21:39:12 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2011-10-09 21:39:12 +0000 |
| commit | 75e649f6f48d121f830f244827551618d903fd07 (patch) | |
| tree | 113c5588f603f68fb0d8f8a6cf5152e1f5b03392 /gcc | |
| parent | 7de61dc6ac5ec699bffb6af49636db501f436004 (diff) | |
| download | gcc-75e649f6f48d121f830f244827551618d903fd07.zip gcc-75e649f6f48d121f830f244827551618d903fd07.tar.gz gcc-75e649f6f48d121f830f244827551618d903fd07.tar.bz2 | |
tree-ssa-forwprop.c (forward_propagate_into_comparison): Do not make the replacement if the conversion to the LHS type is not useless.
* tree-ssa-forwprop.c (forward_propagate_into_comparison): Do not make
the replacement if the conversion to the LHS type is not useless.
From-SVN: r179730
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-forwprop.c | 7 |
2 files changed, 8 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 925b625..3a3c985 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2011-10-09 Eric Botcazou <ebotcazou@adacore.com> + + * tree-ssa-forwprop.c (forward_propagate_into_comparison): Do not make + the replacement if the conversion to the LHS type is not useless. + 2011-10-09 Ira Rosen <ira.rosen@linaro.org> PR tree-optimization/50635 diff --git a/gcc/tree-ssa-forwprop.c b/gcc/tree-ssa-forwprop.c index a8737da..de782c9 100644 --- a/gcc/tree-ssa-forwprop.c +++ b/gcc/tree-ssa-forwprop.c @@ -465,16 +465,15 @@ forward_propagate_into_comparison (gimple_stmt_iterator *gsi) gimple stmt = gsi_stmt (*gsi); tree tmp; bool cfg_changed = false; + tree type = TREE_TYPE (gimple_assign_lhs (stmt)); tree rhs1 = gimple_assign_rhs1 (stmt); tree rhs2 = gimple_assign_rhs2 (stmt); /* Combine the comparison with defining statements. */ tmp = forward_propagate_into_comparison_1 (stmt, gimple_assign_rhs_code (stmt), - TREE_TYPE - (gimple_assign_lhs (stmt)), - rhs1, rhs2); - if (tmp) + type, rhs1, rhs2); + if (tmp && useless_type_conversion_p (type, TREE_TYPE (tmp))) { gimple_assign_set_rhs_from_tree (gsi, tmp); fold_stmt (gsi); |