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tree-ssa-loop-im.c (stmt_cost): Add WIDEN_*, FMA_EXPR and rotates to the set of expensive operations.

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2011-10-20  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-loop-im.c (stmt_cost): Add WIDEN_*, FMA_EXPR
	and rotates to the set of expensive operations.

From-SVN: r180237
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Richard Guenther 2011-10-20 07:57:48 +00:00 committed by Richard Biener
parent 53e7c794d1
commit 67af611e2e
2 changed files with 13 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2011-10-20 Richard Guenther <rguenther@suse.de>
* tree-ssa-loop-im.c (stmt_cost): Add WIDEN_*, FMA_EXPR
and rotates to the set of expensive operations.
2011-10-19 David S. Miller <davem@davemloft.net>
* config/sparc/sparc.c (sparc_expand_move): Use

8
gcc/tree-ssa-loop-im.c
View File

@ -549,6 +549,11 @@ stmt_cost (gimple stmt)
switch (gimple_assign_rhs_code (stmt))
{
case MULT_EXPR:
case WIDEN_MULT_EXPR:
case WIDEN_MULT_PLUS_EXPR:
case WIDEN_MULT_MINUS_EXPR:
case DOT_PROD_EXPR:
case FMA_EXPR:
case TRUNC_DIV_EXPR:
case CEIL_DIV_EXPR:
case FLOOR_DIV_EXPR:
@ -565,6 +570,9 @@ stmt_cost (gimple stmt)
case LSHIFT_EXPR:
case RSHIFT_EXPR:
case WIDEN_LSHIFT_EXPR:
case LROTATE_EXPR:
case RROTATE_EXPR:
cost += 20;
break;