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| author | Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org> | 2017-10-27 10:48:49 +0000 |
|---|---|---|
| committer | Prathamesh Kulkarni <prathamesh3492@gcc.gnu.org> | 2017-10-27 10:48:49 +0000 |
| commit | 0fab169b28a37a9239138aee499b211523c39f28 (patch) | |
| tree | 1433564004d27e19c8c00ff03d4817e57f99cab7 /gcc/common.opt | |
| parent | e89b556bafe224a4017bc4513d88b3e52253ce74 (diff) | |
| download | gcc-0fab169b28a37a9239138aee499b211523c39f28.tar.gz | |
Extend ipa-pure-const pass to propagate malloc attribute.
2017-10-27 Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
* cgraph.h (set_malloc_flag): Declare.
* cgraph.c (set_malloc_flag_1): New function.
(set_malloc_flag): Likewise.
* ipa-fnsummary.h (ipa_call_summary): Add new field is_return_callee.
* ipa-fnsummary.c (ipa_call_summary::reset): Set is_return_callee to
false.
(read_ipa_call_summary): Add support for reading is_return_callee.
(write_ipa_call_summary): Stream is_return_callee.
* ipa-inline.c (ipa_inline): Remove call to ipa_free_fn_summary.
* ipa-pure-const.c: Add headers ssa.h, alloc-pool.h, symbol-summary.h,
ipa-prop.h, ipa-fnsummary.h.
(pure_const_names): Change to static.
(malloc_state_e): Define.
(malloc_state_names): Define.
(funct_state_d): Add field malloc_state.
(varying_state): Set malloc_state to STATE_MALLOC_BOTTOM.
(check_retval_uses): New function.
(malloc_candidate_p): Likewise.
(analyze_function): Add support for malloc attribute.
(pure_const_write_summary): Stream malloc_state.
(pure_const_read_summary): Add support for reading malloc_state.
(dump_malloc_lattice): New function.
(propagate_malloc): New function.
(warn_function_malloc): New function.
(ipa_pure_const::execute): Call propagate_malloc and
ipa_free_fn_summary.
(pass_local_pure_const::execute): Add support for malloc attribute.
* ssa-iterators.h (RETURN_FROM_IMM_USE_STMT): New macro.
* doc/invoke.texi: Document Wsuggest-attribute=malloc.
testsuite/
* gcc.dg/ipa/propmalloc-1.c: New test-case.
* gcc.dg/ipa/propmalloc-2.c: Likewise.
* gcc.dg/ipa/propmalloc-3.c: Likewise.
From-SVN: r254140
Diffstat (limited to 'gcc/common.opt')
| -rw-r--r-- | gcc/common.opt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/common.opt b/gcc/common.opt index 836f05b95a2..d5e831d6b4c 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -741,6 +741,10 @@ Wsuggest-attribute=noreturn Common Var(warn_suggest_attribute_noreturn) Warning Warn about functions which might be candidates for __attribute__((noreturn)). +Wsuggest-attribute=malloc +Common Var(warn_suggest_attribute_malloc) Warning +Warn about functions which might be candidates for __attribute__((malloc)). + Wsuggest-final-types Common Var(warn_suggest_final_types) Warning Warn about C++ polymorphic types where adding final keyword would improve code quality. |