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| author | Kazu Hirata <kazu@cs.umass.edu> | 2005-05-28 21:03:53 +0000 |
|---|---|---|
| committer | Kazu Hirata <kazu@gcc.gnu.org> | 2005-05-28 21:03:53 +0000 |
| commit | 795479950392d25da04300337b3c6c9eabd77941 (patch) | |
| tree | 9079d9b1955f3bd76707127687c446129233f4c6 /gcc | |
| parent | d1aa35ae8ee1188cdc524e1785c5ad13499922d4 (diff) | |
| download | gcc-795479950392d25da04300337b3c6c9eabd77941.zip gcc-795479950392d25da04300337b3c6c9eabd77941.tar.gz gcc-795479950392d25da04300337b3c6c9eabd77941.tar.bz2 | |
tree-ssa-ccp.c (ccp_fold): Remove code that produces non-gimple min minvariant.
* tree-ssa-ccp.c (ccp_fold): Remove code that produces
non-gimple min minvariant.
From-SVN: r100301
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/tree-ssa-ccp.c | 32 |
2 files changed, 5 insertions, 32 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 50e3e65..a925d495 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2005-05-28 Kazu Hirata <kazu@cs.umass.edu> + + * tree-ssa-ccp.c (ccp_fold): Remove code that produces + non-gimple min minvariant. + 2005-05-28 Jan Hubicka <jh@suse.cz> * tree-ssa-threadupdate.c: (create_edge_and_update_destination_phis): diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index c1593f8..01b608b 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -855,21 +855,6 @@ ccp_fold (tree stmt) use this expression. */ if (retval && ! is_gimple_min_invariant (retval)) return NULL; - - /* If we could not fold the expression, but the arguments are all - constants and gimple values, then build and return the new - expression. - - In some cases the new expression is still something we can - use as a replacement for an argument. This happens with - NOP conversions of types for example. - - In other cases the new expression can not be used as a - replacement for an argument (as it would create non-gimple - code). But the new expression can still be used to derive - other constants. */ - if (! retval && is_gimple_min_invariant (op0)) - return build1 (code, TREE_TYPE (rhs), op0); } /* Binary and comparison operators. We know one or both of the @@ -906,23 +891,6 @@ ccp_fold (tree stmt) use this expression. */ if (retval && ! is_gimple_min_invariant (retval)) return NULL; - - /* If we could not fold the expression, but the arguments are all - constants and gimple values, then build and return the new - expression. - - In some cases the new expression is still something we can - use as a replacement for an argument. This happens with - NOP conversions of types for example. - - In other cases the new expression can not be used as a - replacement for an argument (as it would create non-gimple - code). But the new expression can still be used to derive - other constants. */ - if (! retval - && is_gimple_min_invariant (op0) - && is_gimple_min_invariant (op1)) - return build (code, TREE_TYPE (rhs), op0, op1); } /* We may be able to fold away calls to builtin functions if their |