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tree-ssa-ccp.c (ccp_fold): Remove code that produces non-gimple min minvariant.

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* tree-ssa-ccp.c (ccp_fold): Remove code that produces
	non-gimple min minvariant.

From-SVN: r100301
This commit is contained in:
Kazu Hirata 2005-05-28 21:03:53 +00:00 committed by Kazu Hirata
parent d1aa35ae8e
commit 7954799503
2 changed files with 5 additions and 32 deletions
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5
gcc/ChangeLog
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@ -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):

32
gcc/tree-ssa-ccp.c
View File

@ -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