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tree-pass.h (PROP_pta): Removed. 

2007-08-14  Daniel Berlin  <dberlin@dberlin.org>

	* tree-pass.h (PROP_pta): Removed.
	(TODO_rebuild_alias): New.
	(pass_may_alias): Removed.
	* tree-ssa-ccp.c (execute_fold_all_builtins): Only rebuild
	aliasing if we changed something.
	* tree-ssa-alias.c (compute_may_aliases): Make non-static.  Update
	SSA internally.
	(pass_may_alias): Removed.
	(create_structure_vars): Return TODO_rebuild_alias.
	* tree-ssa-pre.c (do_pre): Return TODO_rebuild_alias.
	* tree-sra.c (tree_sra): Only rebuild aliasing if something
	changed.
	(tree_sra_early): We never affect aliasing right now.
	* tree-flow.h (compute_may_aliases): New prototype.
	* passes.c: Remove pass_may_alias from the passes.
	(execute_function_todo): Support TODO_rebuild_alias.

From-SVN: r127491
This commit is contained in:
Daniel Berlin 2007-08-14 20:52:47 +00:00
parent ea2666ba5e
commit 7b0e48fb44
18 changed files with 86 additions and 92 deletions
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20
gcc/ChangeLog
View File

@ -1,3 +1,22 @@
2007-08-14 Daniel Berlin <dberlin@dberlin.org>
* tree-pass.h (PROP_pta): Removed.
(TODO_rebuild_alias): New.
(pass_may_alias): Removed.
* tree-ssa-ccp.c (execute_fold_all_builtins): Only rebuild
aliasing if we changed something.
* tree-ssa-alias.c (compute_may_aliases): Make non-static. Update
SSA internally.
(pass_may_alias): Removed.
(create_structure_vars): Return TODO_rebuild_alias.
* tree-ssa-pre.c (do_pre): Return TODO_rebuild_alias.
* tree-sra.c (tree_sra): Only rebuild aliasing if something
changed.
(tree_sra_early): We never affect aliasing right now.
* tree-flow.h (compute_may_aliases): New prototype.
* passes.c: Remove pass_may_alias from the passes.
(execute_function_todo): Support TODO_rebuild_alias.
2007-08-14 Kai Tietz <kai.tietz@onevision.com>
* i386.c: (legitimize_address): Move dllimported variable check
@ -385,6 +404,7 @@
* emit-rtl.c (try_split): Relink the insns with REG_LIBCALL note
and with REG_RETVAL note after split.
>>>>>>> .r127481
2007-08-11 David Daney <ddaney@avtrex.com>
* config/mips/mips.c (mips_sched_reorder): Mark cycle parameter

27
gcc/passes.c
View File

@ -551,7 +551,6 @@ init_optimization_passes (void)
{
struct tree_opt_pass **p = &pass_all_optimizations.sub;
NEXT_PASS (pass_create_structure_vars);
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_return_slot);
NEXT_PASS (pass_rename_ssa_copies);
@ -566,26 +565,19 @@ init_optimization_passes (void)
NEXT_PASS (pass_vrp);
NEXT_PASS (pass_dce);
NEXT_PASS (pass_dominator);
/* The only const/copy propagation opportunities left after
DOM should be due to degenerate PHI nodes. So rather than
run the full propagators, run a specialized pass which
only examines PHIs to discover const/copy propagation
opportunities. */
NEXT_PASS (pass_phi_only_cprop);
NEXT_PASS (pass_tree_ifcombine);
NEXT_PASS (pass_phiopt);
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_tail_recursion);
NEXT_PASS (pass_ch);
NEXT_PASS (pass_stdarg);
NEXT_PASS (pass_lower_complex);
NEXT_PASS (pass_sra);
/* FIXME: SRA may generate arbitrary gimple code, exposing new
aliased and call-clobbered variables. As mentioned below,
pass_may_alias should be a TODO item. */
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_rename_ssa_copies);
NEXT_PASS (pass_dominator);
@ -599,7 +591,6 @@ init_optimization_passes (void)
NEXT_PASS (pass_reassoc);
NEXT_PASS (pass_dce);
NEXT_PASS (pass_dse);
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_forwprop);
NEXT_PASS (pass_phiopt);
NEXT_PASS (pass_object_sizes);
@ -607,13 +598,8 @@ init_optimization_passes (void)
NEXT_PASS (pass_store_copy_prop);
NEXT_PASS (pass_fold_builtins);
NEXT_PASS (pass_cse_sincos);
/* FIXME: May alias should a TODO but for 4.0.0,
we add may_alias right after fold builtins
which can create arbitrary GIMPLE. */
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_split_crit_edges);
NEXT_PASS (pass_pre);
NEXT_PASS (pass_may_alias);
NEXT_PASS (pass_sink_code);
NEXT_PASS (pass_tree_loop);
{
@ -637,9 +623,6 @@ init_optimization_passes (void)
NEXT_PASS (pass_lower_vector_ssa);
NEXT_PASS (pass_dce_loop);
}
/* NEXT_PASS (pass_may_alias) cannot be done again because the
vectorizer creates alias relations that are not supported by
pass_may_alias. */
NEXT_PASS (pass_complete_unroll);
NEXT_PASS (pass_loop_prefetch);
NEXT_PASS (pass_iv_optimize);
@ -650,7 +633,7 @@ init_optimization_passes (void)
NEXT_PASS (pass_reassoc);
NEXT_PASS (pass_vrp);
NEXT_PASS (pass_dominator);
/* The only const/copy propagation opportunities left after
DOM should be due to degenerate PHI nodes. So rather than
run the full propagators, run a specialized pass which
@ -912,7 +895,13 @@ execute_function_todo (void *data)
update_ssa (update_flags);
cfun->last_verified &= ~TODO_verify_ssa;
}
if (flags & TODO_rebuild_alias)
{
compute_may_aliases ();
cfun->curr_properties |= PROP_alias;
}
if (flags & TODO_remove_unused_locals)
remove_unused_locals ();

6
gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c
View File

@ -1,7 +1,7 @@
/* With tree-ssa, gcc.dg/20000724-1.c failed because we missed
a VOP of x in the asm statement. */
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-alias1-vops" } */
/* { dg-options "-O1 -fdump-tree-salias-vops" } */
struct s { int a; };
@ -14,5 +14,5 @@ main(void)
}
/* The VDEF comes from the initial assignment and the asm. */
/* { dg-final { scan-tree-dump-times "DEF" 2 "alias1" } } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "DEF" 2 "salias" } } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-alias1-vops" } */
/* { dg-options "-O1 -fdump-tree-salias-vops" } */
extern void abort (void);
int a;
@ -17,5 +17,5 @@ void bar (void)
malloc functions may clobber global memory. Only the function result
does not alias any other pointer.
Hence, we must have a VDEF for a before and after the call to foo(). */
/* { dg-final { scan-tree-dump-times "VDEF" 2 "alias1"} } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "VDEF" 2 "salias"} } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c
View File

@ -1,7 +1,7 @@
/* Verify that points-to information is handled properly for PTR + OFFSET
pointer arithmetics. */
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-alias1-vops" } */
/* { dg-options "-O2 -fdump-tree-salias-vops" } */
char buf[4], *q;
int foo (int i)
@ -18,5 +18,5 @@ int foo (int i)
return *p;
}
/* { dg-final { scan-tree-dump-not "VUSE <c" "alias1" } } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-not "VUSE <c" "salias" } } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/alias-12.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-alias1-vops" } */
/* { dg-options "-O2 -fdump-tree-salias-vops" } */
struct {
int i;
@ -13,6 +13,6 @@ int foo(int i)
return a.x[i];
}
/* { dg-final { scan-tree-dump "VDEF" "alias1" } } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump "VDEF" "salias" } } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-optimized -fdump-tree-alias1-vops" } */
/* { dg-options "-O1 -fdump-tree-optimized -fdump-tree-salias-vops" } */
/* Test to make sure that inline-asm causes a V_MAY_DEF and that we call test_function twice. */
char test_function(void ) __attribute__((__pure__));
@ -16,5 +16,5 @@ char f(char *a)
/* { dg-final { cleanup-tree-dump "optimized" } } */
/* There should a VDEF for the inline-asm. */
/* { dg-final { scan-tree-dump-times "VDEF" 1 "alias1"} } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "VDEF" 1 "salias"} } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-alias1-vops" } */
/* { dg-options "-O1 -fdump-tree-salias-vops" } */
/* Test to make sure that inline-asm causes a V_MAY_DEF. */
@ -14,5 +14,5 @@ void f(char *a)
}
/* There should a VDEF for the inline-asm and one for the link_error. */
/* { dg-final { scan-tree-dump-times "VDEF" 2 "alias1"} } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "VDEF" 2 "salias"} } */
/* { dg-final { cleanup-tree-dump "salias" } } */

15
gcc/testsuite/gcc.dg/tree-ssa/pr23382.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-alias-vops" } */
/* { dg-options "-O2 -fdump-tree-salias-vops" } */
struct a
{
int length;
@ -13,14 +13,5 @@ int f(void)
struct a *a = malloc(sizeof(struct a));
return a->length;
}
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "alias1"} } */
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "alias2"} } */
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "alias3"} } */
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "alias4"} } */
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "alias5"} } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { cleanup-tree-dump "alias2" } } */
/* { dg-final { cleanup-tree-dump "alias3" } } */
/* { dg-final { cleanup-tree-dump "alias4" } } */
/* { dg-final { cleanup-tree-dump "alias5" } } */
/* { dg-final { cleanup-tree-dump "alias6" } } */
/* { dg-final { scan-tree-dump-times "VDEF <HEAP" 1 "salias"} } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/pr26421.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-alias1-vops" } */
/* { dg-options "-O2 -fdump-tree-salias-vops" } */
typedef struct {
int i;
@ -16,5 +16,5 @@ int foo(void)
return a.i;
}
/* { dg-final { scan-tree-dump-times "VDEF" 2 "alias1" } } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "VDEF" 2 "salias" } } */
/* { dg-final { cleanup-tree-dump "salias" } } */

6
gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c
View File

@ -1,5 +1,5 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fdump-tree-alias1" } */
/* { dg-options "-O2 -fdump-tree-salias" } */
extern double cos (double);
extern double sin (double);
double f(double a)
@ -22,5 +22,5 @@ double f(double a)
}
/* The points-to set of the final function pointer should be "sin cos" */
/* { dg-final { scan-tree-dump-times "{ sin cos }" 1 "alias1"} } */
/* { dg-final { cleanup-tree-dump "alias1" } } */
/* { dg-final { scan-tree-dump-times "{ sin cos }" 1 "salias"} } */
/* { dg-final { cleanup-tree-dump "salias" } } */

2
gcc/testsuite/gcc.dg/tree-ssa/salias-1.c
View File

@ -15,5 +15,5 @@ int foo(void)
return a.b.c.j;
}
/* { dg-final { scan-tree-dump-times "SFT" 2 "salias" } } */
/* { dg-final { scan-tree-dump-times "structure field tag SFT" 2 "salias" } } */
/* { dg-final { cleanup-tree-dump "salias" } } */

1
gcc/tree-flow.h
View File

@ -831,6 +831,7 @@ extern void record_vars (tree);
extern bool block_may_fallthru (const_tree);
/* In tree-ssa-alias.c */
extern unsigned int compute_may_aliases (void);
extern void dump_may_aliases_for (FILE *, tree);
extern void debug_may_aliases_for (tree);
extern void dump_alias_info (FILE *);

15
gcc/tree-pass.h
View File

@ -149,12 +149,11 @@ struct dump_file_info
#define PROP_gimple_leh (1 << 2) /* lowered eh */
#define PROP_cfg (1 << 3)
#define PROP_referenced_vars (1 << 4)
#define PROP_pta (1 << 5)
#define PROP_ssa (1 << 6)
#define PROP_no_crit_edges (1 << 7)
#define PROP_rtl (1 << 8)
#define PROP_alias (1 << 9)
#define PROP_gimple_lomp (1 << 10) /* lowered OpenMP directives */
#define PROP_ssa (1 << 5)
#define PROP_no_crit_edges (1 << 6)
#define PROP_rtl (1 << 7)
#define PROP_alias (1 << 8)
#define PROP_gimple_lomp (1 << 9) /* lowered OpenMP directives */
#define PROP_trees \
(PROP_gimple_any | PROP_gimple_lcf | PROP_gimple_leh | PROP_gimple_lomp)
@ -228,6 +227,9 @@ struct dump_file_info
/* Internally used for the first instance of a pass. */
#define TODO_mark_first_instance (1 << 18)
/* Rebuild aliasing info. */
#define TODO_rebuild_alias (1 << 19)
#define TODO_update_ssa_any \
(TODO_update_ssa \
| TODO_update_ssa_no_phi \
@ -278,7 +280,6 @@ extern struct tree_opt_pass pass_dce;
extern struct tree_opt_pass pass_dce_loop;
extern struct tree_opt_pass pass_cd_dce;
extern struct tree_opt_pass pass_merge_phi;
extern struct tree_opt_pass pass_may_alias;
extern struct tree_opt_pass pass_split_crit_edges;
extern struct tree_opt_pass pass_pre;
extern struct tree_opt_pass pass_profile;

4
gcc/tree-sra.c
View File

@ -2400,6 +2400,8 @@ tree_sra (void)
scan_function ();
decide_instantiations ();
scalarize_function ();
if (!bitmap_empty_p (sra_candidates))
todoflags |= TODO_rebuild_alias;
}
/* Free allocated memory. */
@ -2422,7 +2424,7 @@ tree_sra_early (void)
ret = tree_sra ();
early_sra = false;
return ret;
return ret & ~TODO_rebuild_alias;
}
static bool

34
gcc/tree-ssa-alias.c
View File

@ -1634,10 +1634,12 @@ done:
grouped to avoid severe compile-time slow downs and memory
consumption. See compute_memory_partitions. */
static unsigned int
unsigned int
compute_may_aliases (void)
{
struct alias_info *ai;
timevar_push (TV_TREE_MAY_ALIAS);
memset (&alias_stats, 0, sizeof (alias_stats));
@ -1731,33 +1733,15 @@ compute_may_aliases (void)
/* Deallocate memory used by aliasing data structures. */
delete_alias_info (ai);
if (need_ssa_update_p ())
update_ssa (TODO_update_ssa);
timevar_pop (TV_TREE_MAY_ALIAS);
return 0;
}
struct tree_opt_pass pass_may_alias =
{
"alias", /* name */
NULL, /* gate */
compute_may_aliases, /* execute */
NULL, /* sub */
NULL, /* next */
0, /* static_pass_number */
TV_TREE_MAY_ALIAS, /* tv_id */
PROP_cfg | PROP_ssa, /* properties_required */
PROP_alias, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
TODO_dump_func
| TODO_update_ssa
| TODO_ggc_collect
| TODO_verify_ssa
| TODO_verify_stmts, /* todo_flags_finish */
0 /* letter */
};
/* Data structure used to count the number of dereferences to PTR
inside an expression. */
struct count_ptr_d
@ -4028,7 +4012,7 @@ create_structure_vars (void)
}
}
return 0;
return TODO_rebuild_alias;
}
static bool

10
gcc/tree-ssa-ccp.c
View File

@ -2640,6 +2640,8 @@ execute_fold_all_builtins (void)
{
bool cfg_changed = false;
basic_block bb;
unsigned int todoflags = 0;
FOR_EACH_BB (bb)
{
block_stmt_iterator i;
@ -2697,6 +2699,7 @@ execute_fold_all_builtins (void)
{
bool ok = set_rhs (stmtp, result);
gcc_assert (ok);
todoflags |= TODO_rebuild_alias;
}
}
@ -2728,9 +2731,12 @@ execute_fold_all_builtins (void)
bsi_next (&i);
}
}
/* Delete unreachable blocks. */
return cfg_changed ? TODO_cleanup_cfg : 0;
if (cfg_changed)
todoflags |= TODO_cleanup_cfg;
return todoflags;
}

2
gcc/tree-ssa-pre.c
View File

@ -3981,7 +3981,7 @@ static unsigned int
do_pre (void)
{
execute_pre (false);
return 0;
return TODO_rebuild_alias;
}
static bool