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re PR middle-end/42233 (c++ builtin_expect code generation regression)

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PR middle-end/42233
	* gimplify.c (gimple_boolify): For __builtin_expect call
	gimple_boolify also on its first argument.

From-SVN: r156888
This commit is contained in:
Jakub Jelinek 2010-02-19 10:50:30 +01:00 committed by Jakub Jelinek
parent 40e053e3b8
commit 554cf33034
2 changed files with 32 additions and 0 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2010-02-19 Jakub Jelinek <jakub@redhat.com>
PR middle-end/42233
* gimplify.c (gimple_boolify): For __builtin_expect call
gimple_boolify also on its first argument.
2010-02-18 Uros Bizjak <ubizjak@gmail.com>
* configure.ac (gnu-unique-object): Wrap regexps using [] in

26
gcc/gimplify.c
View File

@ -2720,6 +2720,32 @@ gimple_boolify (tree expr)
tree type = TREE_TYPE (expr);
location_t loc = EXPR_LOCATION (expr);
if (TREE_CODE (expr) == NE_EXPR
&& TREE_CODE (TREE_OPERAND (expr, 0)) == CALL_EXPR
&& integer_zerop (TREE_OPERAND (expr, 1)))
{
tree call = TREE_OPERAND (expr, 0);
tree fn = get_callee_fndecl (call);
/* For __builtin_expect ((long) (x), y) recurse into x as well. */
if (fn
&& DECL_BUILT_IN_CLASS (fn) == BUILT_IN_NORMAL
&& DECL_FUNCTION_CODE (fn) == BUILT_IN_EXPECT
&& call_expr_nargs (call) == 2)
{
tree arg = CALL_EXPR_ARG (call, 0);
if (arg)
{
if (TREE_CODE (arg) == NOP_EXPR
&& TREE_TYPE (arg) == TREE_TYPE (call))
arg = TREE_OPERAND (arg, 0);
arg = gimple_boolify (arg);
CALL_EXPR_ARG (call, 0)
= fold_convert_loc (loc, TREE_TYPE (call), arg);
}
}
}
if (TREE_CODE (type) == BOOLEAN_TYPE)
return expr;