diff options
| -rw-r--r-- | gcc/ChangeLog | 11 | ||||
| -rw-r--r-- | gcc/Makefile.in | 1 | ||||
| -rw-r--r-- | gcc/adjust-alignment.c | 84 | ||||
| -rw-r--r-- | gcc/passes.def | 1 | ||||
| -rw-r--r-- | gcc/tree-pass.h | 1 |
5 files changed, 98 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 9eee988..fdaa94a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,14 @@ +2020-05-20 Kito Cheng <kito.cheng@sifive.com> + + PR target/90811 + * Makefile.in (OBJS): Add adjust-alignment.o. + * adjust-alignment.c (pass_data_adjust_alignment): New. + (pass_adjust_alignment): New. + (pass_adjust_alignment::execute): New. + (make_pass_adjust_alignment): New. + * tree-pass.h (make_pass_adjust_alignment): New. + * passes.def: Add pass_adjust_alignment. + 2020-05-19 Alex Coplan <alex.coplan@arm.com> PR target/94591 diff --git a/gcc/Makefile.in b/gcc/Makefile.in index 9ba21f7..0fe2ba2 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -1267,6 +1267,7 @@ OBJS = \ insn-recog.o \ insn-enums.o \ ggc-page.o \ + adjust-alignment.o \ alias.o \ alloc-pool.o \ auto-inc-dec.o \ diff --git a/gcc/adjust-alignment.c b/gcc/adjust-alignment.c new file mode 100644 index 0000000..40cfd18 --- /dev/null +++ b/gcc/adjust-alignment.c @@ -0,0 +1,84 @@ +/* Adjust alignment for local variable. + Copyright (C) 2020 Free Software Foundation, Inc. + Contributed by Kito Cheng <kito.cheng@sifive.com> + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify it under +the terms of the GNU General Public License as published by the Free +Software Foundation; either version 3, or (at your option) any later +version. + +GCC is distributed in the hope that it will be useful, but WITHOUT ANY +WARRANTY; without even the implied warranty of MERCHANTABILITY or +FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "backend.h" +#include "target.h" +#include "tree.h" +#include "tree-pass.h" +#include "tm_p.h" + +namespace { + +const pass_data pass_data_adjust_alignment = +{ + GIMPLE_PASS, /* type */ + "adjust_alignment", /* name */ + OPTGROUP_NONE, /* optinfo_flags */ + TV_NONE, /* tv_id */ + 0, /* properties_required */ + 0, /* properties_provided */ + 0, /* properties_destroyed */ + 0, /* todo_flags_start */ + 0, /* todo_flags_finish */ +}; + +class pass_adjust_alignment : public gimple_opt_pass +{ +public: + pass_adjust_alignment (gcc::context *ctxt) + : gimple_opt_pass (pass_data_adjust_alignment, ctxt) + {} + + virtual unsigned int execute (function *); +}; // class pass_adjust_alignment + +} // anon namespace + +/* Entry point to adjust_alignment pass. */ +unsigned int +pass_adjust_alignment::execute (function *fun) +{ + size_t i; + tree var; + + FOR_EACH_LOCAL_DECL (fun, i, var) + { + /* Don't adjust aligment for static local var and hard register var. */ + if (is_global_var (var) || DECL_HARD_REGISTER (var)) + continue; + + unsigned align = LOCAL_DECL_ALIGNMENT (var); + + /* Make sure alignment only increase. */ + gcc_assert (align >= DECL_ALIGN (var)); + + SET_DECL_ALIGN (var, align); + } + return 0; +} + +gimple_opt_pass * +make_pass_adjust_alignment (gcc::context *ctxt) +{ + return new pass_adjust_alignment (ctxt); +} diff --git a/gcc/passes.def b/gcc/passes.def index 2bf2cb7..92cbe58 100644 --- a/gcc/passes.def +++ b/gcc/passes.def @@ -183,6 +183,7 @@ along with GCC; see the file COPYING3. If not see NEXT_PASS (pass_oacc_device_lower); NEXT_PASS (pass_omp_device_lower); NEXT_PASS (pass_omp_target_link); + NEXT_PASS (pass_adjust_alignment); NEXT_PASS (pass_all_optimizations); PUSH_INSERT_PASSES_WITHIN (pass_all_optimizations) NEXT_PASS (pass_remove_cgraph_callee_edges); diff --git a/gcc/tree-pass.h b/gcc/tree-pass.h index a1207a2..576b3f6 100644 --- a/gcc/tree-pass.h +++ b/gcc/tree-pass.h @@ -480,6 +480,7 @@ extern gimple_opt_pass *make_pass_sprintf_length (gcc::context *ctxt); extern gimple_opt_pass *make_pass_walloca (gcc::context *ctxt); extern gimple_opt_pass *make_pass_coroutine_lower_builtins (gcc::context *ctxt); extern gimple_opt_pass *make_pass_coroutine_early_expand_ifns (gcc::context *ctxt); +extern gimple_opt_pass *make_pass_adjust_alignment (gcc::context *ctxt); /* IPA Passes */ extern simple_ipa_opt_pass *make_pass_ipa_lower_emutls (gcc::context *ctxt); |