From 7b0e48fb44b44241ae79e34a666edc87fdfbeb78 Mon Sep 17 00:00:00 2001 From: Daniel Berlin <dberlin@gcc.gnu.org> Date: Tue, 14 Aug 2007 20:52:47 +0000 Subject: [PATCH] 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 --- gcc/ChangeLog | 20 ++++++++++++ gcc/passes.c | 27 +++++----------- gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/alias-12.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/pr23382.c | 15 ++------- gcc/testsuite/gcc.dg/tree-ssa/pr26421.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c | 6 ++-- gcc/testsuite/gcc.dg/tree-ssa/salias-1.c | 2 +- gcc/tree-flow.h | 1 + gcc/tree-pass.h | 15 +++++---- gcc/tree-sra.c | 4 ++- gcc/tree-ssa-alias.c | 34 ++++++-------------- gcc/tree-ssa-ccp.c | 10 ++++-- gcc/tree-ssa-pre.c | 2 +- 18 files changed, 86 insertions(+), 92 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index bda9ad83fe0..11d3ad8e2a5 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -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 diff --git a/gcc/passes.c b/gcc/passes.c index 2d26a9031c9..1ec6b0a2c0d 100644 --- a/gcc/passes.c +++ b/gcc/passes.c @@ -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 (); diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c index a81edaf79f4..46a3be7ee22 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/20031015-1.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c index 85d5074f803..318ba7c1a19 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/20040517-1.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c b/gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c index 3ddef717d8d..ac2b961d9dc 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/20040911-1.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/alias-12.c b/gcc/testsuite/gcc.dg/tree-ssa/alias-12.c index 409452686bb..970ddc7323e 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/alias-12.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/alias-12.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c index e14c45e4eec..97c25b1be93 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-1.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c index f3dd1fd671f..33443e0234d 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/inline_asm-2.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr23382.c b/gcc/testsuite/gcc.dg/tree-ssa/pr23382.c index 62b4051ee71..d0b208825bc 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/pr23382.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr23382.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr26421.c b/gcc/testsuite/gcc.dg/tree-ssa/pr26421.c index 4a6560ab102..d2d99baf0a1 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/pr26421.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr26421.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c b/gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c index 4a64d2490f4..b9d84dffa8a 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/pta-fp.c @@ -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" } } */ diff --git a/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c b/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c index 9933cc8ca31..5e47db40a73 100644 --- a/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c +++ b/gcc/testsuite/gcc.dg/tree-ssa/salias-1.c @@ -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" } } */ diff --git a/gcc/tree-flow.h b/gcc/tree-flow.h index 7e60dae42a8..f55922ba11a 100644 --- a/gcc/tree-flow.h +++ b/gcc/tree-flow.h @@ -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 *); diff --git a/gcc/tree-pass.h b/gcc/tree-pass.h index fc12a6c738e..5a20772339e 100644 --- a/gcc/tree-pass.h +++ b/gcc/tree-pass.h @@ -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; diff --git a/gcc/tree-sra.c b/gcc/tree-sra.c index f2e64c702e4..5d69a49b7eb 100644 --- a/gcc/tree-sra.c +++ b/gcc/tree-sra.c @@ -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 diff --git a/gcc/tree-ssa-alias.c b/gcc/tree-ssa-alias.c index b1dcf44f803..3889ea5aa75 100644 --- a/gcc/tree-ssa-alias.c +++ b/gcc/tree-ssa-alias.c @@ -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 diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c index 5d4d3d859ec..e6dfcd83e88 100644 --- a/gcc/tree-ssa-ccp.c +++ b/gcc/tree-ssa-ccp.c @@ -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; } diff --git a/gcc/tree-ssa-pre.c b/gcc/tree-ssa-pre.c index 059af1212b7..bfbf20ed860 100644 --- a/gcc/tree-ssa-pre.c +++ b/gcc/tree-ssa-pre.c @@ -3981,7 +3981,7 @@ static unsigned int do_pre (void) { execute_pre (false); - return 0; + return TODO_rebuild_alias; } static bool