PR tree-optimization/67955
* tree-ssa-alias.c (same_addr_size_stores_p): New function.
(stmt_kills_ref_p): Use it.
PR tree-optimization/67955
* gcc.dg/tree-ssa/dse-points-to.c: New test.
From-SVN: r243325
Add a new flag on the Var_expression class that indicates
whether the var reference appears in an "lvalue" context
(for example, on the LHS of an assignment stmt) or an
"rvalue" context (for example, as an argument of a call).
Add a traversal pass that visits assignment stmt LHS subtrees
so as to mark things prior to backend gen. Select the right
context value in other places where Backend::var_expression is
called.
Reviewed-on: https://go-review.googlesource.com/33990
* go-gcc.cc (Gcc_backend::var_expression): Add Varexpr_context
parameter.
From-SVN: r243321
[gcc]
2016-12-06 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/78658
* config/rs6000/rs6000.md (zero_extendqi<mode>2): Use ^ instead of
?* constraints for the ISA 3.0 patterns, so the register allocator
is more likely to allocate QImode/HImode to vector registers for
conversion to floating point unless a reload is needed.
(zero_extendhi<mode>2): Likewise.
(float<QHI:mode><FP_ISA3:mode>2_internal): Properly deal with the
first alternative which is converting QImode/HImode to floating
point and the QImode/HImode value is in a vector register, and
does not allocate the second pseudo register. Remove zero
extending into traditional floating point registers, since the
instruction used only works on traditional altivec registers.
(floatuns<QHI:mode><FP_ISA3:mode>2_internal): Likewise.
[gcc/testsuite]
2016-12-06 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/78658
* gcc.target/powerpc/pr78658.c: New test.
From-SVN: r243320
gcc/ChangeLog:
* config/i386/i386.c: Include print-rtl.h.
(selftest::ix86_test_dumping_memory_blockage): New function.
(selftest::ix86_run_selftests): Call it.
* print-rtl-function.c (print_rtx_function): Create an
rtx_reuse_manager and use it.
* print-rtl.c: Include "rtl-iter.h".
(rtx_writer::rtx_writer): Add reuse_manager param.
(rtx_reuse_manager::rtx_reuse_manager): New ctor.
(uses_rtx_reuse_p): New function.
(rtx_reuse_manager::preprocess): New function.
(rtx_reuse_manager::has_reuse_id): New function.
(rtx_reuse_manager::seen_def_p): New function.
(rtx_reuse_manager::set_seen_def): New function.
(rtx_writer::print_rtx): If "in_rtx" has a reuse ID, print it as a
prefix the first time in_rtx is seen, and print reuse_rtx
subsequently.
(print_inline_rtx): Supply NULL for new reuse_manager param.
(debug_rtx): Likewise.
(print_rtl): Likewise.
(print_rtl_single): Likewise.
(rtx_writer::print_rtl_single_with_indent): Likewise.
* print-rtl.h: Include bitmap.h when building for host.
(rtx_writer::rtx_writer): Add reuse_manager param.
(rtx_writer::m_rtx_reuse_manager): New field.
(class rtx_reuse_manager): New class.
* rtl-tests.c (selftest::assert_rtl_dump_eq): Add reuse_manager
param and use it when constructing rtx_writer.
(selftest::test_dumping_rtx_reuse): New function.
(selftest::rtl_tests_c_tests): Call it.
* selftest-rtl.h (class rtx_reuse_manager): New forward decl.
(selftest::assert_rtl_dump_eq): Add reuse_manager param.
(ASSERT_RTL_DUMP_EQ): Supply NULL for reuse_manager param.
(ASSERT_RTL_DUMP_EQ_WITH_REUSE): New macro.
From-SVN: r243317
Added #ifdef case for when void* is 16 bits so it compiles in AVR
target.
2016-12-06 Felipe Magno de Almeida <felipe@expertisesolutions.com.br>
* src/c++11/cow-stdexcept.cc: Add special case for 16 bit pointers.
From-SVN: r243310
Enable libstdc++ compilation in AVR targets with AVR-Libc. Most
floating point math functions are already defined in AVR-Libc, so
defines are in place to avoid multiple definition of these functions.
2016-12-06 Felipe Magno de Almeida <felipe@expertisesolutions.com.br>
* crossconfig.m4: Add avr target for cross-compilation.
* configure: Regenerate.
From-SVN: r243309
* config/arm/arm-cores.def (cortex-m23, cortex-m33): Move into
alphabetical order with respect to other ARMv8 processors.
* config/arm/arm-tables.opt: Regenerate.
* config/arm/arm-tune.md: Likewise.
From-SVN: r243306
* python/libstdcxx/v6/printers.py (StdVariantPrinter): Update for new
data member name.
* testsuite/libstdc++-prettyprinters/cxx17.cc: Remove redundant test.
From-SVN: r243304
Constrain optional's __constexpr_addressof in its return type
and use a constexpr addressof for optional, if available.
* include/experimental/optional (__constexpr_addressof):
Constrain in the return type instead of in a template parameter.
(_Has_addressof_mem)
(_Has_addressof_free, _Has_addressof, __constexpr_addressof):
Guard with #ifndef __cpp_lib_addressof_constexpr.
(operator->()): Use std::__addressof if it's constexpr.
From-SVN: r243298
* include/std/variant (visit): Make visit constexpr. Also cleanup
__get_alternative and __storage, since we don't support reference/void
alternatives any more.
* testsuite/20_util/variant/compile.cc: Add tests.
From-SVN: r243295
PR middle-end/78566
* tree-ssa-uninit.c (can_one_predicate_be_invalidated_p): Change
argument type to a pred_chain.
(can_chain_union_be_invalidated_p): Use pred_chain instead of a
worklist.
(flatten_out_predicate_chains): Remove.
(uninit_uses_cannot_happen): Rename from
uninit_ops_invalidate_phi_use.
Change logic so that we are checking that the PHI use will
invalidate _ALL_ possibly uninitialized operands.
(is_use_properly_guarded): Rename call to
uninit_ops_invalidate_phi_use into uninit_uses_cannot_happen.
From-SVN: r243288
2016-12-06 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/78675
* tree-vect-loop.c (vectorizable_live_operation): For
VECTOR_BOOLEAN_TYPE_P vectype use integral type with bitsize precision
instead of TREE_TYPE (vectype) for the BIT_FIELD_REF.
* gcc.c-torture/execute/pr78675.c: New test.
* gcc.target/i386/pr78675-1.c: New test.
* gcc.target/i386/pr78675-2.c: New test.
From-SVN: r243283
2016-12-05 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/78688
* config/rs6000/rs6000.h (FUNCTION_VALUE_REGNO_P): Use IN_RANGE
instead of ((N) >= (X) && (N) <= (Y-X)) to silence warnings about
comparing signed to unsigned values.
(FUNCTION_ARG_REGNO_P): Likewise.
From-SVN: r243278
2016-12-05 Bill Schmidt <wschmidt@linux.vnet.ibm.com>
Stefan Freudenberger <stefan@reservoir.com>
PR tree-optimization/78646
* gimple-ssa-strength-reduction.c (replace_ref): The pointer
addition used for the memory base expression should have the type
of the candidate.
Co-Authored-By: Stefan Freudenberger <stefan@reservoir.com>
From-SVN: r243272
gcc:
* match.pd: Simplify X ? C : 0 where C is a power of 2 and
X tests a single bit.
gcc/testsuite:
* gcc.dg/fold-and-lshift.c, gcc.dg/fold-and-rshift-1.c,
gcc.dg/fold-and-rshift-2.c: New testcases.
From-SVN: r243255
gcc/
2016-12-05 Cupertino Miranda <cmiranda@synopsys.com>
* config/arc/arc.h (STARTFILE_SPEC): Use default linux specs.
(ENDFILE_SPEC): Likewise.
libgcc/
2016-12-05 Cupertino Miranda <cmiranda@synopsys.com>
* config.host (arc*-*-linux-uclibc*): Use default extra
objects. Include linux-android header.
* config/arc/crti.S (_init): Declare symbol as function.
(_fini): Likewise.
From-SVN: r243245
GCC Administrator