PR tree-optimization/20100

	PR tree-optimization/20115
	* tree-optimize.c (init_tree_optimization_passes): Remove
	pass_maybe_create_global_var.
	* tree-pass.h (pass_maybe_create_global_var): Remove.
	* tree-ssa-alias.c (aliases_computed_p): Declare.
	(struct alias_info): Add field NUM_PURE_CONST_CALLS_FOUND.
	(count_calls_and_maybe_create_global_var): Remove.
	(pass_maybe_create_global_var): Remove.
	(init_alias_info): Do not declare aliases_computed_p.
	(maybe_create_global_var): If the function contains no
	call-clobbered variables and a mix of pure/const and regular
	function calls, create .GLOBAL_VAR.
	Mark all call-clobbered variables for renaming.
	(merge_pointed_to_info): Update comment.
	(add_pointed_to_var): Likewise.
	(is_escape_site): Likewise.
	Accept struct alias_info * instead of size_t *.
	Update all users.
	Update AI->NUM_CALLS_FOUND and AI->NUM_PURE_CONST_CALLS_FOUND
	as necessary.
	* tree-ssa-operands.c (get_call_expr_operands): If
	ALIASES_COMPUTED_P is false, do not add call-clobbering
	operands.
	* tree-ssa.c (init_tree_ssa): Set ALIASES_COMPUTED_P to false.
	(delete_tree_ssa): Likewise.

testsuite/ChangeLog

	PR tree-optimization/20100
	PR tree-optimization/20115
	* gcc.dg/pr20115.c: New test.
	* gcc.dg/pr20115-1.c: New test.
	* gcc.dg/pr20100.c: New test.
	* gcc.dg/tree-ssa/20040517-1.c: Expect virtual operands for
	call-clobbered variables after alias1.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@95437 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 2 insertions, 0 deletions

diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c
index 56a181a37cd..b39c260c273 100644
--- a/gcc/tree-ssa.c
+++ b/gcc/tree-ssa.c
@@ -723,6 +723,7 @@ init_tree_ssa (void)
   init_ssanames ();
   init_phinodes ();
   global_var = NULL_TREE;
+  aliases_computed_p = false;
 }
 
 
@@ -767,6 +768,7 @@ delete_tree_ssa (void)
   BITMAP_FREE (addressable_vars);
   addressable_vars = NULL;
   modified_noreturn_calls = NULL;
+  aliases_computed_p = false;
 }