2016-07-19 Richard Biener <rguenther@suse.de>
PR tree-optimization/71901
* tree-ssa-sccvn.h (struct vn_reference_op_struct): Add
align member, group stuff with the bitfield.
(vn_ref_op_align_unit): New inline.
* tree-ssa-sccvn.c (copy_reference_ops_from_ref): For ARRAY_REFs
record element alignment and operand 3 unchanged.
(ao_ref_init_from_vn_reference): Adjust.
(valueize_refs_1): Likewise.
* tree-ssa-pre.c (create_component_ref_by_pieces_1): Likewise.
* gcc.dg/torture/pr71901.c: New testcase.
From-SVN: r238468
2016-07-18 Richard Biener <rguenther@suse.de>
PR tree-optimization/71908
* tree-ssa-structalias.c (get_constraint_for_component_ref): Handle
symbolic constants in a more reliable way.
* gcc.dg/torture/pr71908.c: New testcase.
From-SVN: r238467
2016-07-19 Richard Biener <rguenther@suse.de>
PR lto/71907
* lto-streamer-out.c (DFS::DFS_write_tree_body): For blocks
with an abstract origin that is not an inlined function outer
scope add a self-reference as abstract origin.
* tree-streamer-out.c (write_ts_block_tree_pointers): Likewise.
From-SVN: r238456
[gcc]
2016-07-18 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/71493
* config/rs6000/rs6000.c (rs6000_function_value): Fix
unintentional System V.4 structure return breakage for structures
with a single floating point element.
[gcc/testsuite]
2016-07-18 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/71493
* gcc.target/powerpc/pr71493-1.c: New test.
* gcc.target/powerpc/pr71493-2.c: Likewise.
From-SVN: r238454
PR c++/70869
PR c++/71054
* cp-gimplify.c (cp_genericize_r): Revert the 2016-07-07 change.
* tree.c (cp_walk_subtrees): For DECL_EXPR on DECL_ARTIFICIAL
non-static VAR_DECL, walk the decl's DECL_INITIAL, DECL_SIZE and
DECL_SIZE_UNIT.
From-SVN: r238444
PR c++/71835
* call.c (build_op_call_1): Use convert_like_with_context only
if cand->fn is a decl.
* g++.dg/conversion/ambig3.C: New test.
From-SVN: r238443
PR c++/71828
* constexpr.c (cxx_eval_constant_expression) <case REALPART_EXPR>:
For lval don't use cxx_eval_unary_expression and instead recurse
and if needed rebuild the reference.
* g++.dg/cpp0x/constexpr-71828.C: New test.
From-SVN: r238442
The attached patch fixes a warning during Linux kernel compilation
on S/390 due to -mwarn-dynamicstack and runtime alignment of stack
variables with constant size causing cfun->calls_alloca to be set
(even if alloca is not used at all). The patched code places
constant size runtime aligned variables in the "virtual stack
vars" area instead of creating a "virtual stack dynamic" area.
This behaviour is activated by defining
#define ALLOCATE_DYNAMIC_STACK_SPACE_IN_PROLOGUE 1
in the backend; otherwise the old logic is used.
The kernel uses runtime alignment for the page structure (aligned
to 16 bytes), and apart from triggereing the alloca warning
(-mwarn-dynamicstack), the current Gcc also generates inefficient
code like
aghi %r15,-160 # prologue: create stack frame
lgr %r11,%r15 # prologue: generate frame pointer
aghi %r15,-32 # space for dynamic stack
which could be simplified to
aghi %r15,-192
(if later optimization passes are able to get rid of the frame
pointer). Is there a specific reason why the patched behaviour
shouldn't be used for all platforms?
--
As the placement of runtime aligned stack variables with constant
size is done completely in the middleend, I don't see a way to fix
this in the backend.
gcc/ChangeLog:
2016-07-18 Dominik Vogt <vogt@linux.vnet.ibm.com>
* cfgexpand.c (expand_stack_vars): Implement synamic stack space
allocation in the prologue.
* explow.c (get_dynamic_stack_base): New function to return an address
expression for the dynamic stack base.
(get_dynamic_stack_size): New function to do the required dynamic stack
space size calculations.
(allocate_dynamic_stack_space): Use new functions.
(align_dynamic_address): Move some code from
allocate_dynamic_stack_space to new function.
* explow.h (get_dynamic_stack_base, get_dynamic_stack_size): Export.
gcc/testsuite/ChangeLog:
2016-07-18 Dominik Vogt <vogt@linux.vnet.ibm.com>
* gcc.target/s390/warn-dynamicstack-1.c: New test.
* gcc.dg/stack-usage-2.c (foo3): Adapt expected warning.
stack-layout-dynamic-1.c: New test.
From-SVN: r238432
gcc/ChangeLog:
2016-07-18 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* config/s390/s390.c (s390_encode_section_info): Always set
notaligned marker if mode size is 0 or no MEM_ALIGN info could be
found.
gcc/testsuite/ChangeLog:
2016-07-18 Andreas Krebbel <krebbel@linux.vnet.ibm.com>
* gcc.target/s390/nolrl-1.c: New test.
From-SVN: r238427
* config/pa/pa.c (hppa_profile_hook): Allocate stack space for
register parameters. Remove code to initialize argument pointer
on TARGET_64BIT. Optimize call to _mcount when it can be reached
using a pc-relative branch. Cleanup conditional code.
* config/pa/pa.md (call_mcount): New expander.
(call_mcount_nonpic): New insn.
(call_mcount_pic): New insn and split.
(call_mcount_pic_post_reload): New insn.
(call_mcount_64bit): New insn and split.
(call_mcount_64bit_post_reload): New insn.
From-SVN: r238414
2016-07-15 Jerry DeLisle <jvdelisle@gcc.gnu.org>
Marco Restelli <mrestelli@gmail.com>
PR fortran/62125
* symbol.c (select_type_insert_tmp): Recursively call self to take care
of nested select type.
* gfortran.dg/pr62125.f90: New test.
Co-Authored-By: Marco Restelli <mrestelli@gmail.com>
From-SVN: r238400
gcc/c/
* c-parser.c (c_parser_oacc_declare): Don't scan for
GOMP_MAP_POINTER.
* c-typeck.c (handle_omp_array_sections): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.
gcc/cp/
* parser.c (cp_parser_oacc_declare): Don't scan for
GOMP_MAP_POINTER.
* semantics.c (handle_omp_array_sections): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.
gcc/
* omp-low.c (lower_omp_target): Mark data clauses with
GOMP_MAP_FORCE_{PRESENT,TO,FROM,TOFROM} as potentially having
zero-length subarrays.
libgomp/
* testsuite/libgomp.oacc-c-c++-common/zero_length_subarrays.c: New
test.
From-SVN: r238376
2016-07-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/71881
* tree-loop-distribution.c (destroy_loop): Remove blocks in
reverse DOM order to make debug temp generation happy.
* gcc.dg/torture/pr71881.c: New testcase.
From-SVN: r238374
2016-07-15 Richard Biener <rguenther@suse.de>
PR tree-optimization/71887
* tree-ssa-phiopt.c (absorbing_element_p): Add rhs arg and
verify it is not zero for division / modulo handling.
(value_replacement): Adjust.
* gcc.dg/torture/pr71887.c: New testcase.
From-SVN: r238373
Richard Biener
Ilya Enkovich
Michael Meissner
GCC Administrator
Jakub Jelinek
Uros Bizjak
Jason Merrill
Ville Voutilainen
Yuri Rumyantsev
Dominik Vogt
Andreas Krebbel
Fritz Reese
John David Anglin
Andreas Schwab
Jonathan Wakely
Jerry DeLisle
Bill Schmidt
Edward Smith-Rowland
Georg-Johann Lay
Georg-Johann Lay
Jakub Jelinek
Bin Cheng
Cesar Philippidis