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  1. 19 Mar, 2018 10 commits
    • [PR81647][AARCH64] Fix handling of Unordered Comparisons in aarch64-simd.md · f7d884d4 
      This patch fixes the inconsistent behavior observed at -O3 for the unordered
comparisons. According to the online docs (https://gcc.gnu.org/onlinedocs
/gcc-7.2.0/gccint/Unary-and-Binary-Expressions.html), all of the following
should not raise an FP exception:
- UNGE_EXPR
- UNGT_EXPR
- UNLE_EXPR
- UNLT_EXPR
- UNEQ_EXPR
Also ORDERED_EXPR and UNORDERED_EXPR should only return zero or one.

The aarch64-simd.md handling of these were generating exception raising
instructions such as fcmgt. This patch changes the instructions that are
emitted in order to not give out the exceptions. We first check each
operand for NaNs and force any elements containing NaN to zero before using
them in the compare.

Example: UN<cc> (a, b) -> UNORDERED (a, b)
			  | (cm<cc> (isnan (a) ? 0.0 : a, isnan (b) ? 0.0 : b))


The ORDERED_EXPR is now handled as (cmeq (a, a) & cmeq (b, b)) and
UNORDERED_EXPR as ~ORDERED_EXPR and UNEQ as (~ORDERED_EXPR | cmeq (a,b)).

ChangeLog Entries:

*** gcc/ChangeLog ***

2018-03-19  Sudakshina Das  <sudi.das@arm.com>

	PR target/81647
	* config/aarch64/aarch64-simd.md (vec_cmp<mode><v_int_equiv>): Modify
	instructions for UNLT, UNLE, UNGT, UNGE, UNEQ, UNORDERED and ORDERED.

*** gcc/testsuite/ChangeLog ***

2018-03-19  Sudakshina Das  <sudi.das@arm.com>

	PR target/81647
	* gcc.target/aarch64/pr81647.c: New.

From-SVN: r258653
      Sudakshina Das committed
    • * es.po, sv.po: Update. · a84677b8 
      From-SVN: r258651
      Joseph Myers committed
    • RISC-V: Fix bootstrap failure. · c0d3d1b6 
      	gcc/
	PR bootstrap/84856
	* config/riscv/riscv.c (riscv_function_arg_boundary): Use
	PREFERRED_STACK_BOUNDARY instead of STACK_BOUNDARY.
	(riscv_first_stack_step): Likewise.
	(riscv_option_override): Use STACK_BOUNDARY instead of
	MIN_STACK_BOUNDARY.
	* config/riscv/riscv.h (STACK_BOUNDARY): Renamed from
	MIN_STACK_BOUNDARY.
	(BIGGEST_ALIGNMENT): Set to 128.
	(PREFERRED_STACK_BOUNDARY): Renamed from STACK_BOUNDARY.
	(RISCV_STACK_ALIGN): Use PREFERRED_STACK_BOUNDARY instead of
	STACK_BOUNDARY.

From-SVN: r258650
      Jim Wilson committed
    • re PR tree-optimization/84933 (ICE in set_value_range, at tree-vrp.c:288 since r257852) · be742eb4 
      2018-03-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84933
	* tree-vrp.c (set_and_canonicalize_value_range): Treat out-of-bound
	values as -INF/INF when canonicalizing an ANTI_RANGE to a RANGE.

	* g++.dg/pr84933.C: New testcase.

From-SVN: r258646
      Richard Biener committed
    • re PR tree-optimization/84859 (bogus -Warray-bounds on a memcpy in a loop) · 68d93a19 
      2018-03-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84859
	* tree-ssa-phiopt.c (single_trailing_store_in_bb): New function.
	(cond_if_else_store_replacement): Perform sinking operation on
	single-store BBs regardless of MAX_STORES_TO_SINK setting.
	Generalize what a BB with a single eligible store is.

	* gcc.dg/tree-ssa/pr84859.c: New testcase.
	* gcc.dg/tree-ssa/pr35286.c: Disable cselim.
	* gcc.dg/tree-ssa/split-path-6.c: Likewise.
	* gcc.dg/tree-ssa/split-path-7.c: Likewise.

From-SVN: r258645
      Richard Biener committed
    • [C++/84812] ICE with local fn decl · 8f3284a4 
      https://gcc.gnu.org/ml/gcc-patches/2018-03/msg00872.html
	PR c++/84812
	* name-lookup.c (set_local_extern_decl_linkage): Defend against
	ambiguous lookups.

	PR c++/84812
	* g++.dg/lookup/pr84812.C: New.

From-SVN: r258644
      Nathan Sidwell committed
    • re PR tree-optimization/84929 (ICE at -O3 on valid code on x86_64-linux-gnu:… · 25f91fda 
      re PR tree-optimization/84929 (ICE at -O3 on valid code on x86_64-linux-gnu: tree check: expected polynomial_chrec, have nop_expr in analyze_siv_subscript_cst_affine, at tree-data-ref.c:3018)

2018-03-19  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/84929
	* tree-data-ref.c (analyze_siv_subscript_cst_affine): Guard
	chrec_is_positive against non-chrec arg.

	* gcc.dg/torture/pr84929.c: New testcase.

From-SVN: r258643
      Richard Biener committed
    • re PR target/84711 (AArch32 big-endian fails when taking subreg of a vector mode to a scalar mode.) · 8455b50e 
      gcc/
2018-03-19  Tamar Christina  <tamar.christina@arm.com>

	PR target/84711
	* config/arm/arm.c (arm_can_change_mode_class): revert r258554.
       
gcc/testsuite/
2018-03-19  Tamar Christina  <tamar.christina@arm.com>

	PR target/84711
	* gcc.target/arm/big-endian-subreg.c: Delete.

From-SVN: r258642
      Tamar Christina committed
    • re PR fortran/84931 (Expansion of array constructor with constant implied-do-object goes sideways) · 949d0060 
      2018-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84931
	* simplify.c (gfc_convert_constant): Correctly handle iterators
	for type conversion.

2018-03-19  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/84931
	* gfortran.dg/array_constructor_52.f90: New test.

From-SVN: r258641
      Thomas Koenig committed
    • Daily bump. · 43bb589d 
      From-SVN: r258640
      GCC Administrator committed
  3. 18 Mar, 2018 11 commits
  5. 17 Mar, 2018 6 commits
  7. 16 Mar, 2018 13 commits