r254140 - in /trunk/gcc: ChangeLog cgraph.c cgr...

[prathamesh3492 at gcc dot gnu dot org]

Author: prathamesh3492
Date: Fri Oct 27 10:48:49 2017
New Revision: 254140

URL: https://gcc.gnu.org/viewcvs?rev=254140&root=gcc&view=rev
Log:
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.

Added:
    trunk/gcc/testsuite/gcc.dg/ipa/propmalloc-1.c
    trunk/gcc/testsuite/gcc.dg/ipa/propmalloc-2.c
    trunk/gcc/testsuite/gcc.dg/ipa/propmalloc-3.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cgraph.c
    trunk/gcc/cgraph.h
    trunk/gcc/common.opt
    trunk/gcc/doc/invoke.texi
    trunk/gcc/ipa-fnsummary.c
    trunk/gcc/ipa-fnsummary.h
    trunk/gcc/ipa-inline.c
    trunk/gcc/ipa-pure-const.c
    trunk/gcc/ssa-iterators.h
    trunk/gcc/testsuite/ChangeLog