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| author | Richard Guenther <rguenther@suse.de> | 2005-08-01 08:58:25 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2005-08-01 08:58:25 +0000 |
| commit | a8f82ec4377e4a314ec3d602f8f1f603bd76b749 (patch) | |
| tree | 0ac2d5dd61af001d5b05d83f9c8b9c54f5ce7b48 | |
| parent | ac264fef2367c4773f4ed4868bdaa13c39b1ab44 (diff) | |
| download | gcc-a8f82ec4377e4a314ec3d602f8f1f603bd76b749.zip gcc-a8f82ec4377e4a314ec3d602f8f1f603bd76b749.tar.gz gcc-a8f82ec4377e4a314ec3d602f8f1f603bd76b749.tar.bz2 | |
re PR tree-optimization/23133 (recip does not factor division by function parameter)
2005-08-01 Richard Guenther <rguenther@suse.de>
PR tree-optimization/23133
* tree-ssa-math-opts.c (execute_cse_reciprocals): Walk
current functions parameter decls to find defs to cse
reciprocals of.
From-SVN: r102628
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/tree-ssa-math-opts.c | 12 |
2 files changed, 18 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 07b3141..a4818a4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,12 @@ 2005-08-01 Richard Guenther <rguenther@suse.de> + PR tree-optimization/23133 + * tree-ssa-math-opts.c (execute_cse_reciprocals): Walk + current functions parameter decls to find defs to cse + reciprocals of. + +2005-08-01 Richard Guenther <rguenther@suse.de> + PR tree-optimization/23109 * tree-ssa-math-opts.c (execute_cse_reciprocals_1): If trapping math is in effect, use post-dominator information diff --git a/gcc/tree-ssa-math-opts.c b/gcc/tree-ssa-math-opts.c index bff3c1d..be2d758 100644 --- a/gcc/tree-ssa-math-opts.c +++ b/gcc/tree-ssa-math-opts.c @@ -122,10 +122,20 @@ static void execute_cse_reciprocals (void) { basic_block bb; + tree arg; if (flag_trapping_math) calculate_dominance_info (CDI_POST_DOMINATORS); + if (single_succ_p (ENTRY_BLOCK_PTR)) + for (arg = DECL_ARGUMENTS (cfun->decl); arg; arg = TREE_CHAIN (arg)) + if (default_def (arg)) + { + block_stmt_iterator bsi; + bsi = bsi_start (single_succ (ENTRY_BLOCK_PTR)); + execute_cse_reciprocals_1 (&bsi, default_def (arg), false); + } + FOR_EACH_BB (bb) { block_stmt_iterator bsi; @@ -149,7 +159,7 @@ execute_cse_reciprocals (void) if (TREE_CODE (stmt) == MODIFY_EXPR && (def = SINGLE_SSA_TREE_OPERAND (stmt, SSA_OP_DEF)) != NULL && FLOAT_TYPE_P (TREE_TYPE (def)) - && is_gimple_reg (def)) + && TREE_CODE (def) == SSA_NAME) execute_cse_reciprocals_1 (&bsi, def, false); } } |