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ipa-inline-analysis.c (eliminated_by_inlining_prob): Handle &this->field expressions.

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* ipa-inline-analysis.c (eliminated_by_inlining_prob): Handle
	&this->field expressions.

From-SVN: r192899
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Jan Hubicka 2012-10-29 00:59:31 +01:00 committed by Jan Hubicka
parent 1d5d667b3b
commit a7dbc1cbe5
2 changed files with 20 additions and 0 deletions
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5
gcc/ChangeLog
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@ -1,3 +1,8 @@
2012-10-28 Jan Hubicka <jh@suse.cz>
* ipa-inline-analysis.c (eliminated_by_inlining_prob): Handle
&this->field expressions.
2012-10-28 Vladimir Makarov <vmakarov@redhat.com>
* rtl.h (struct rtx_def): Add a comment for member unchanging.

15
gcc/ipa-inline-analysis.c
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@ -1567,6 +1567,7 @@ eliminated_by_inlining_prob (gimple stmt)
if (gimple_assign_rhs_code (stmt) == CONVERT_EXPR
|| gimple_assign_rhs_code (stmt) == NOP_EXPR
|| gimple_assign_rhs_code (stmt) == VIEW_CONVERT_EXPR
|| gimple_assign_rhs_code (stmt) == ADDR_EXPR
|| gimple_assign_rhs_class (stmt) == GIMPLE_SINGLE_RHS)
{
tree rhs = gimple_assign_rhs1 (stmt);
@ -1584,6 +1585,20 @@ eliminated_by_inlining_prob (gimple stmt)
/* Reads of parameter are expected to be free. */
if (unmodified_parm (stmt, inner_rhs))
rhs_free = true;
/* Match expressions of form &this->field. Those will most likely
combine with something upstream after inlining. */
else if (TREE_CODE (inner_rhs) == ADDR_EXPR)
{
tree op = get_base_address (TREE_OPERAND (inner_rhs, 0));
if (TREE_CODE (op) == PARM_DECL)
rhs_free = true;
else if (TREE_CODE (op) == MEM_REF)
{
op = get_base_address (TREE_OPERAND (op, 0));
if (unmodified_parm (stmt, op))
rhs_free = true;
}
}
/* When parameter is not SSA register because its address is taken
and it is just copied into one, the statement will be completely