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tree-ssa-pre.c (eliminate): When replacing a PHI node carry out a necessary conversion.

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2009-04-15  Richard Guenther  <rguenther@suse.de>

	* tree-ssa-pre.c (eliminate): When replacing a PHI node carry
	out a necessary conversion.
	* tree-ssa-sccvn.c (run_scc_vn): Also assign value-ids to
	names we didn't value number.
	* tree-mudflap.c (mf_build_check_statement_for): Use correct types.

From-SVN: r146121
This commit is contained in:
Richard Guenther 2009-04-15 14:18:22 +00:00 committed by Richard Biener
parent 25e20805c0
commit f116fecf89
4 changed files with 15 additions and 4 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2009-04-15 Richard Guenther <rguenther@suse.de>
* tree-ssa-pre.c (eliminate): When replacing a PHI node carry
out a necessary conversion.
* tree-ssa-sccvn.c (run_scc_vn): Also assign value-ids to
names we didn't value number.
* tree-mudflap.c (mf_build_check_statement_for): Use correct types.
2009-04-15 Richard Guenther <rguenther@suse.de>
PR tree-optimization/39764

6
gcc/tree-mudflap.c
View File

@ -634,7 +634,7 @@ mf_build_check_statement_for (tree base, tree limit,
/* Build the conditional jump. 'cond' is just a temporary so we can
simply build a void COND_EXPR. We do need labels in both arms though. */
g = gimple_build_cond (NE_EXPR, cond, integer_zero_node, NULL_TREE,
g = gimple_build_cond (NE_EXPR, cond, boolean_false_node, NULL_TREE,
NULL_TREE);
gimple_set_location (g, location);
gimple_seq_add_stmt (&seq, g);
@ -664,9 +664,9 @@ mf_build_check_statement_for (tree base, tree limit,
/* u is a string, so it is already a gimple value. */
u = mf_file_function_line_tree (location);
/* NB: we pass the overall [base..limit] range to mf_check. */
v = fold_build2 (PLUS_EXPR, integer_type_node,
v = fold_build2 (PLUS_EXPR, mf_uintptr_type,
fold_build2 (MINUS_EXPR, mf_uintptr_type, mf_limit, mf_base),
integer_one_node);
build_int_cst (mf_uintptr_type, 1));
v = force_gimple_operand (v, &stmts, true, NULL_TREE);
gimple_seq_add_seq (&seq, stmts);
g = gimple_build_call (mf_check_fndecl, 4, mf_base, v, dirflag, u);

2
gcc/tree-ssa-pre.c
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@ -4181,6 +4181,8 @@ eliminate (void)
remove_phi_node (&gsi, false);
if (!useless_type_conversion_p (TREE_TYPE (res), TREE_TYPE (sprime)))
sprime = fold_convert (TREE_TYPE (res), sprime);
stmt = gimple_build_assign (res, sprime);
SSA_NAME_DEF_STMT (res) = stmt;
if (TREE_CODE (sprime) == SSA_NAME)

3
gcc/tree-ssa-sccvn.c
View File

@ -2886,7 +2886,8 @@ run_scc_vn (bool may_insert_arg)
if (!name)
continue;
info = VN_INFO (name);
if (info->valnum == name)
if (info->valnum == name
|| info->valnum == VN_TOP)
info->value_id = get_next_value_id ();
else if (is_gimple_min_invariant (info->valnum))
info->value_id = get_or_alloc_constant_value_id (info->valnum);