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| author | Jan Hubicka <jh@suse.cz> | 2005-11-21 14:14:02 +0100 |
|---|---|---|
| committer | Jan Hubicka <hubicka@gcc.gnu.org> | 2005-11-21 13:14:02 +0000 |
| commit | 078152a256a43a888048dcec5e2c6d503db5b75c (patch) | |
| tree | 9be13a35411c4736c5d5aaa5999fe92678e322c0 /gcc | |
| parent | 1c2871213e18fe5a0c1cf7e6c517adf9680e48b6 (diff) | |
| download | gcc-078152a256a43a888048dcec5e2c6d503db5b75c.zip gcc-078152a256a43a888048dcec5e2c6d503db5b75c.tar.gz gcc-078152a256a43a888048dcec5e2c6d503db5b75c.tar.bz2 | |
re PR tree-optimization/24653 (EON regressed seriously on x86-64)
PR tree-optimization/24653
* tree-ssa-ccp.c (ccp_fold): Strip down useless conversions.
From-SVN: r107304
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 4 |
2 files changed, 9 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c9e309a..008444d 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-11-21 Jan Hubicka <jh@suse.cz> + + PR tree-optimization/24653 + * tree-ssa-ccp.c (ccp_fold): Strip down useless conversions. + 2005-11-21 Uros Bizjak <uros@kss-loka.si> * config/i386/predicates.md (ax_reg_operand): New predicate. diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index cd446ee..a838ce9 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -879,6 +879,10 @@ ccp_fold (tree stmt) op0 = get_value (op0, true)->value; } + if ((code == NOP_EXPR || code == CONVERT_EXPR) + && tree_ssa_useless_type_conversion_1 (TREE_TYPE (rhs), + TREE_TYPE (op0))) + return op0; return fold_unary (code, TREE_TYPE (rhs), op0); } |