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  1. 19 Mar, 2017 1 commit
  3. 18 Mar, 2017 10 commits
  5. 17 Mar, 2017 19 commits
  7. 16 Mar, 2017 10 commits
    • stabilize store merging · 50b6d676 
      Don't let pointer randomization change the order in which we process
store chains.  This may cause SSA_NAMEs to be released in different
order, and if they're reused later, they may cause differences in SSA
partitioning, leading to differences in expand, and ultimately to
different code.

bootstrap-debug-lean (-fcompare-debug) on i686-linux-gnu has failed in
haifa-sched.c since r245196 exposed the latent ordering problem in
store merging.  In this case, the IR differences (different SSA names
selected for copies in out-of-SSA, resulting in some off-by-one
differences in pseudos) were not significant enough to be visible in
the compiler output.


for  gcc/ChangeLog

	* gimple-ssa-store-merging.c (struct imm_store_chain_info):
	Add linked-list forward and backlinks.  Insert on
	construction, remove on destruction.
	(class pass_store_merging): Add m_stores_head field.
	(pass_store_merging::terminate_and_process_all_chains):
	Iterate over m_stores_head list.
	(pass_store_merging::terminate_all_aliasing_chains):
	Likewise.
	(pass_store_merging::execute): Check for debug stmts first.
	Push new chains onto the m_stores_head stack.

From-SVN: r246213
      Alexandre Oliva committed
    • * decl.c (start_enum): std::byte aliases anything. · 2e92d7ad 
      From-SVN: r246212
      Jason Merrill committed
    • * init.c (cpp_init_builtins): Update __cplusplus for C++17. · 85e653c9 
      From-SVN: r246211
      Jason Merrill committed
    • re PR c++/79797 (ICE with NSDMI, this pointer and constexpr) · fbd603c4 
      	PR c++/79797
	* constexpr.c (lookup_placeholder): Tweak.

From-SVN: r246210
      Jason Merrill committed
    • re PR target/71294 (ICE in gen_add2_insn, at optabs.c:4442 on powerpc64le-linux) · 207f3423 
      [gcc]
2017-03-16  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/71294
	* config/rs6000/vsx.md (vsx_splat_<mode>, VSX_D iterator): Allow a
	SPLAT operation on ISA 2.07 64-bit systems that have direct move,
	but no MTVSRDD support, by doing MTVSRD and XXPERMDI.

[gcc/testsuite]
2017-03-16  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/71294
	* g++.dg/pr71294.C: New test.

From-SVN: r246209
      Michael Meissner committed
    • re PR tree-optimization/71437 (Performance regression after r235817) · c8755022 
      	PR tree-optimization/71437
	* tree-ssa-dom.c (dom_opt_dom_walker): Remove thread_across_edge
	member function.  Implementation moved into after_dom_children
	member function and into the threader's thread_outgoing_edges
	function.
	(dom_opt_dom_walker::after_dom_children): Simplify by moving
	some code into new thread_outgoing_edges.
	* tree-ssa-threadedge.c (thread_across_edge): Make static and simplify
	definition.  Simplify marker handling (do it here).   Assume we always
	have the available expression and the const/copies tables.
	(thread_outgoing_edges): New function extracted from tree-ssa-dom.c
	and tree-vrp.c
	* tree-ssa-threadedge.h (thread_outgoing_edges): Declare.
	* tree-vrp.c (equiv_stack): No longer file scoped.
	(vrp_dom_walker): New class.
	(vrp_dom_walker::before_dom_children): New member function.
	(vrp_dom_walker::after_dom_children): Likewise.
	(identify_jump_threads):  Setup domwalker.  Use it rather than
	walking edges in a random order by hand.  Simplify setup/finalization.
	(finalize_jump_threads): Remove.
	(vrp_finalize): Do not call identify_jump_threads here.
	(execute_vrp): Do it here instead and call thread_through_all_blocks
	here too.

From-SVN: r246208
      Jeff Law committed
    • re PR tree-optimization/71437 (Performance regression after r235817) · 8d7437be 
      	PR tree-optimization/71437
	* tree-ssa-dom.c (pfn_simplify): Add basic_block argument.  All
	callers changed.
	(simplify_stmt_for_jump_threading): Add basic_block argument.  All
	callers changed.
	(lhs_of_dominating_assert): Moved from here into tree-vrp.c.
	(dom_opt_dom_walker::thread_across_edge): Remove
	handle_dominating_asserts argument.  All callers changed.
	(record_temporary_equivalences_from_stmts_at_dest): Corresponding
	changes.  Remove calls to lhs_of_dominating_assert.  Other
	uses of handle_dominating_asserts turn into unconditional code
	(simplify_control_stmt_condition_1): Likewise.
	(simplify_control_stmt_condition): Likewise.
	(thread_through_normal_block, thread_across_edge): Likewise.
	* tree-ssa-threadedge.h (thread_across_edge): Corresponding changes.
	* tree-vrp.c (lhs_of_dominating_assert): Move here.  Return original
	object if it is not an SSA_NAME.
	(simplify_stmt_for_jump_threading): Call lhs_of_dominating_assert
	before calling into the VRP specific simplifiers.
	(identify_jump_threads): Remove handle_dominating_asserts
	argument.

From-SVN: r246207
      Jeff Law committed
    • Fix tree-prof/pr66295.c · 9fc900af 
      This testcase can only ever be built on x86 (it needs the "avx*"
attributes).  This patch skips the test elsewhere.


gcc/testsuite/
	* gcc.dg/tree-prof/pr66295.c: Skip unless on an x86 target.

From-SVN: r246206
      Segher Boessenkool committed
    • PR libstdc++/79980 fix target type of cast · e363c939 
      	PR libstdc++/79980
	* src/c++11/codecvt.cc (to_integer(codecvt_mode)): Fix target type.

From-SVN: r246205
      Jonathan Wakely committed
    • re PR fortran/80010 (diagnostics: typo $!) · e711928b 
      	PR fortran/80010
	* parse.c (gfc_ascii_statement): Use !$ACC for ST_OACC_ATOMIC
	and ST_OACC_END_ATOMIC, instead of !ACC.
	* trans-decl.c (finish_oacc_declare): Use !$ACC instead of $!ACC.
	* openmp.c (gfc_match_oacc_declare, gfc_match_oacc_wait,
	gfc_resolve_oacc_declare): Likewise.

	* gfortran.dg/goacc/asyncwait-3.f95: Adjust expected diagnostic.

From-SVN: r246204
      Jakub Jelinek committed