Kelvin Nilsen [Tue, 26 Jun 2018 19:45:01 +0000 (19:45 +0000)]
backport: rs6000-c.c (altivec_overloaded_builtins): Change behavior of vec_packsu (vector unsigned long long...
gcc/ChangeLog:
2018-06-26 Kelvin Nilsen <kelvin@gcc.gnu.org>
Backported from mainline
2018-06-20 Kelvin Nilsen <kelvin@gcc.gnu.org>
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Change
behavior of vec_packsu (vector unsigned long long, vector unsigned
long long) to match behavior of vec_packs with same signature.
gcc/testsuite/ChangeLog:
2018-06-26 Kelvin Nilsen <kelvin@gcc.gnu.org>
Backported from mainline
2018-06-20 Kelvin Nilsen <kelvin@gcc.gnu.org>
* gcc.target/powerpc/builtins-1.c: Add dg directives to scan
for vpkudus.
Robin Dapp [Tue, 26 Jun 2018 12:23:02 +0000 (12:23 +0000)]
S/390: Fix mtune default.
When building with --with-tune=zEC12 and calling the resulting gcc
with --march=z13 (no extra -mtune), the binary would unexpectedly be compiled
with -march=z13 -mtune=zEC12. This patch avoids using the default tune
parameter if -march is specified as argument but the user can still
explicitly state -march=z13 -mtune=zEC12.
gcc/ChangeLog:
2018-06-26 Robin Dapp <rdapp@linux.ibm.com>
* config/s390/s390.h (enum processor_flags): Do not use
default tune parameter when -march was specified.
Jakub Jelinek [Tue, 26 Jun 2018 11:54:29 +0000 (13:54 +0200)]
re PR target/86314 (GCC 7.x and 8.x zero out "eax" before using "rax" in "lock bts")
PR target/86314
* config/i386/i386.md (setcc + movzbl to xor + setcc peephole2s):
Check reg_overlap_mentioned_p in addition to reg_set_p with the same
operands.
Jakub Jelinek [Mon, 25 Jun 2018 12:48:29 +0000 (14:48 +0200)]
re PR target/84786 ([miscompilation] vunpcklpd accessing xmm16-22 targeting KNL)
PR target/84786
* config/i386/sse.md (vshift_count): New mode attr.
(<shift_insn><mode>3<mask_name>): Use <vshift_count>N instead of vN
as last operand's constraint for VI2_AVX2_AVX512BW shifts. Use YvN
instead of vN as last operand's constraint for VI48_AVX2 shifts.
Paul Thomas [Mon, 25 Jun 2018 07:52:09 +0000 (07:52 +0000)]
re PR fortran/83118 (Bad intrinsic assignment of class(*) array component of derived type)
2018-06-25 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83118
Back port from trunk
* resolve.c (resolve_ordinary_assign): Force the creation of a
vtable for assignment of non-polymorphic expressions to an
unlimited polymorphic object.
* trans-array.c (gfc_alloc_allocatable_for_assignment): Use the
size of the rhs type for such assignments. Set the dtype, _len
and vptrs appropriately.
* trans-expr.c (gfc_trans_assignment): Force the use of the
_copy function for these assignments.
2018-06-25 Paul Thomas <pault@gcc.gnu.org>
PR fortran/83118
Back port from trunk
* gfortran.dg/unlimited_polymorphic_30.f03: New test.
2018-06-23 Richard Sandiford <richard.sandiford@linaro.org>
gcc/
PR tree-optimization/85989
* gimple-ssa-backprop.c (backprop::m_visited_phis): New member
variable.
(backprop::intersect_uses): Check it when deciding whether this
is a backedge reference.
(backprop::process_block): Add each phi to m_visited_phis
after visiting it, then clear it at the end.
gcc/testsuite/
PR tree-optimization/85989
* gcc.dg/torture/pr85989.c: New test.
Jakub Jelinek [Fri, 22 Jun 2018 21:33:07 +0000 (23:33 +0200)]
backport: re PR tree-optimization/86231 (vrp_meet causes wrong-code)
Backported from mainline
2018-06-20 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/86231
* tree-vrp.c (union_ranges): For ( [ ) ] or ( )[ ] range and
anti-range don't overwrite *vr0min before using it to compute *vr0max.
* gcc.dg/tree-ssa/vrp119.c: New test.
* gcc.c-torture/execute/pr86231.c: New test.
Jakub Jelinek [Fri, 22 Jun 2018 21:27:25 +0000 (23:27 +0200)]
backport: re PR c/85696 (OpenMP with variably modified and default(none) won't compile)
Backported from mainline
2018-05-11 Jakub Jelinek <jakub@redhat.com>
PR c/85696
* c-omp.c (c_omp_predetermined_sharing): Return
OMP_CLAUSE_DEFAULT_SHARED for artificial vars with integral type.
* c-typeck.c (c_finish_omp_clauses): Don't use
c_omp_predetermined_sharing, instead just check TREE_READONLY.
* cp-tree.h (cxx_omp_predetermined_sharing_1): New prototype.
* cp-gimplify.c (cxx_omp_predetermined_sharing): New wrapper around
cxx_omp_predetermined_sharing_1. Rename old function to ...
(cxx_omp_predetermined_sharing_1): ... this.
* semantics.c (finish_omp_clauses): Use cxx_omp_predetermined_sharing_1
instead of cxx_omp_predetermined_sharing.
Jakub Jelinek [Fri, 22 Jun 2018 21:25:04 +0000 (23:25 +0200)]
backport: re PR c/85696 (OpenMP with variably modified and default(none) won't compile)
Backported from mainline
2018-05-11 Jakub Jelinek <jakub@redhat.com>
PR c/85696
* c-omp.c (c_omp_predetermined_sharing): Return
OMP_CLAUSE_DEFAULT_SHARED for artificial vars with integral type.
* c-typeck.c (c_finish_omp_clauses): Don't use
c_omp_predetermined_sharing, instead just check TREE_READONLY.
* cp-tree.h (cxx_omp_predetermined_sharing_1): New prototype.
* cp-gimplify.c (cxx_omp_predetermined_sharing): New wrapper around
cxx_omp_predetermined_sharing_1. Rename old function to ...
(cxx_omp_predetermined_sharing_1): ... this.
* semantics.c (finish_omp_clauses): Use cxx_omp_predetermined_sharing_1
instead of cxx_omp_predetermined_sharing.
Jakub Jelinek [Fri, 22 Jun 2018 21:23:03 +0000 (23:23 +0200)]
backport: re PR c++/85662 ("error: non-constant condition for static assertion" from __builtin_offsetof in C++)
Backported from mainline
2018-06-22 Jakub Jelinek <jakub@redhat.com>
PR c++/85662
* g++.dg/ext/offsetof3.C: New test.
2018-05-10 Jakub Jelinek <jakub@redhat.com>
PR c++/85662
* c-common.h (fold_offsetof_1): Removed.
(fold_offsetof): Add TYPE argument defaulted to size_type_node and
CTX argument defaulted to ERROR_MARK.
* c-common.c (fold_offsetof_1): Renamed to ...
(fold_offsetof): ... this. Remove wrapper function. Add TYPE
argument, convert the pointer constant to TYPE and use size_binop
with PLUS_EXPR instead of fold_build_pointer_plus if type is not
a pointer type. Adjust recursive calls.
* c-fold.c (c_fully_fold_internal): Use fold_offsetof rather than
fold_offsetof_1, pass TREE_TYPE (expr) as TYPE to it and drop the
fold_convert_loc.
* c-typeck.c (build_unary_op): Use fold_offsetof rather than
fold_offsetof_1, pass argtype as TYPE to it and drop the
fold_convert_loc.
* cp-gimplify.c (cp_fold): Use fold_offsetof rather than
fold_offsetof_1, pass TREE_TYPE (x) as TYPE to it and drop the
fold_convert.
Jakub Jelinek [Fri, 22 Jun 2018 21:19:32 +0000 (23:19 +0200)]
backport: re PR tree-optimization/85529 (wrong code at -O2 and -O3 on x86_64-linux-gnu)
Backported from mainline
2018-04-27 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/85529
* tree-ssa-reassoc.c (optimize_range_tests_var_bound): Add FIRST_BB
argument. Don't call get_nonzero_bits if opcode is ERROR_MARK_NODE,
rhs2 def stmt's bb is dominated by first_bb and it isn't an obvious
zero extension or masking of the MSB bit.
(optimize_range_tests): Add FIRST_BB argument, pass it through
to optimize_range_tests_var_bound.
(maybe_optimize_range_tests, reassociate_bb): Adjust
optimize_range_tests callers.
* gcc.c-torture/execute/pr85529-1.c: New test.
* gcc.c-torture/execute/pr85529-2.c: New test.
* gcc.dg/pr85529.c: New test.
Jakub Jelinek [Fri, 22 Jun 2018 21:18:32 +0000 (23:18 +0200)]
backport: re PR tree-optimization/85446 (wrong-code on riscv64)
Backported from mainline
2018-04-19 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/85446
* match.pd ((intptr_t) x eq/ne CST to x eq/ne (typeof x) cst): Require
the integral and pointer types to have the same precision.
Jakub Jelinek [Fri, 22 Jun 2018 21:16:41 +0000 (23:16 +0200)]
backport: re PR jit/85384 (libgccjit does not work if --with-gcc-major-version is used)
2018-06-22 Jakub Jelinek <jakub@redhat.com>
Backported from mainline
2018-04-18 David Malcolm <dmalcolm@redhat.com>
PR jit/85384
* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.
* configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
by using gcc_base_ver to generate a gcc_driver_version, and use
it when generating GCC_DRIVER_NAME.
* configure: Regenerate.
Jakub Jelinek [Fri, 22 Jun 2018 21:12:32 +0000 (23:12 +0200)]
backport: re PR c++/84463 (Supposedly-incompliant "error: '* key0' is not a constant expression")
Backported from mainline
2018-04-18 Jakub Jelinek <jakub@redhat.com>
PR c++/84463
* typeck.c (cp_build_addr_expr_1): Move handling of offsetof-like
tricks from here to ...
* cp-gimplify.c (cp_fold) <case ADDR_EXPR>: ... here. Only use it
if INDIRECT_REF's operand is INTEGER_CST cast to pointer type.
* g++.dg/cpp0x/constexpr-nullptr-1.C: Add -O1 to dg-options.
* g++.dg/cpp0x/constexpr-nullptr-2.C: Expect different diagnostics
in two cases. Uncomment two other tests and add expected dg-error for
them.
* g++.dg/init/struct2.C: Cast to int rather than long to avoid
-Wnarrowing diagnostics on some targets for c++11.
* g++.dg/parse/array-size2.C: Remove xfail.
* g++.dg/cpp0x/constexpr-84463.C: New test.
Jakub Jelinek [Fri, 22 Jun 2018 21:11:28 +0000 (23:11 +0200)]
backport: re PR rtl-optimization/85431 (UBSAN: ../../gcc/dse.c:303:15: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int')
Backported from mainline
2018-04-17 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/85431
* dse.c (record_store): Ignore zero width stores.
Jakub Jelinek [Fri, 22 Jun 2018 21:10:17 +0000 (23:10 +0200)]
backport: re PR rtl-optimization/85300 (ICE in exact_int_to_float_conversion_p, at simplify-rtx.c:895)
Backported from mainline
2018-04-10 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/85300
* combine.c (subst): Handle subst of CONST_SCALAR_INT_P new_rtx also
into FLOAT and UNSIGNED_FLOAT like ZERO_EXTEND, return a CLOBBER if
simplify_unary_operation fails.
Jakub Jelinek [Fri, 22 Jun 2018 21:08:47 +0000 (23:08 +0200)]
backport: re PR tree-optimization/85257 (wrong code with -O -fno-tree-ccp and reading zeroed vector member)
Backported from mainline
2018-04-07 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/85257
* fold-const.c (native_encode_vector): If not all elts could fit
and off is -1, return 0 rather than offset.
* tree-ssa-sccvn.c (vn_reference_lookup_3): Pass
(offset - offset2) / BITS_PER_UNIT as 4th argument to
native_encode_expr. Verify len * BITS_PER_UNIT >= maxsizei. Don't
adjust buffer in native_interpret_expr call.
Jakub Jelinek [Fri, 22 Jun 2018 21:06:41 +0000 (23:06 +0200)]
backport: re PR c++/85208 (ICE with #pragma weak and structured binding)
Backported from mainline
2018-04-05 Jakub Jelinek <jakub@redhat.com>
PR c++/85208
* decl.c (start_decl): For DECL_DECOMPOSITION_P decls, don't call
maybe_apply_pragma_weak here...
(cp_maybe_mangle_decomp): ... but call it here instead.
Jakub Jelinek [Fri, 22 Jun 2018 21:05:52 +0000 (23:05 +0200)]
backport: re PR inline-asm/85172 (internal compiler error: unexpected expression '<statement>' of kind asm_expr)
Backported from mainline
2018-04-04 Jakub Jelinek <jakub@redhat.com>
PR inline-asm/85172
* constexpr.c (cxx_eval_builtin_function_call): For calls to
builtin_valid_in_constant_expr_p functions, don't call
cxx_eval_constant_expression if argument is not
potential_constant_expression.
* g++.dg/ext/builtin13.C: New test.
* g++.dg/ext/atomic-4.C: New test.
Jakub Jelinek [Fri, 22 Jun 2018 21:02:52 +0000 (23:02 +0200)]
backport: re PR c++/84791 (ICE with broken OpenMP reduction clause)
Backported from mainline
2018-03-30 Jakub Jelinek <jakub@redhat.com>
PR c++/84791
* semantics.c (finish_omp_reduction_clause): If
OMP_CLAUSE_REDUCTION_PLACEHOLDER is error_mark_node, return true
even if processing_template_decl.
Jakub Jelinek [Fri, 22 Jun 2018 20:56:25 +0000 (22:56 +0200)]
backport: re PR inline-asm/84941 (internal compiler error: in reg_overlap_mentioned_p, at rtlanal.c:1870 (reg_overlap_mentioned_p()/match_asm_constraints_1()))
Backported from mainline
2018-03-22 Jakub Jelinek <jakub@redhat.com>
PR inline-asm/84941
* function.c (match_asm_constraints_1): Don't do the optimization
if input isn't a REG, SUBREG, MEM or constant.
Jakub Jelinek [Fri, 22 Jun 2018 20:54:44 +0000 (22:54 +0200)]
backport: re PR c++/84961 (ICE error: SSA_NAME_DEF_STMT is wrong)
Backported from mainline
2018-03-21 Jakub Jelinek <jakub@redhat.com>
PR c++/84961
* cp-tree.h (genericize_compound_lvalue): Declare.
* typeck.c (genericize_compound_lvalue): New function.
(unary_complex_lvalue, cp_build_modify_expr): Use it.
* semantics.c (finish_asm_stmt): Replace MODIFY_EXPR, PREINCREMENT_EXPR
and PREDECREMENT_EXPR in output and "m" constrained input operands with
COMPOUND_EXPR. Call cxx_mark_addressable on the rightmost
COMPOUND_EXPR operand.
* c-c++-common/pr43690.c: Don't expect errors on "m" (--x) and
"m" (++x) in C++.
* g++.dg/torture/pr84961-1.C: New test.
* g++.dg/torture/pr84961-2.C: New test.
Jakub Jelinek [Fri, 22 Jun 2018 20:51:42 +0000 (22:51 +0200)]
backport: re PR sanitizer/85018 (Many sanitizer tests ICE since r258681)
Backported from mainline
2018-03-22 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/85018
* dwarf2asm.c (dw2_output_indirect_constant_1): Set
DECL_INITIAL (decl) to decl at the end.
* varasm.c (use_blocks_for_decl_p): Revert the 2018-03-20 change,
adjust the comment.
2018-03-20 Jakub Jelinek <jakub@redhat.com>
PR target/84990
* dwarf2asm.c (dw2_output_indirect_constant_1): Temporarily turn off
flag_section_anchors.
* varasm.c (use_blocks_for_decl_p): Remove hack for
dw2_force_const_mem.
2018-03-19 Jakub Jelinek <jakub@redhat.com>
PR sanitizer/78651
* dwarf2asm.c: Include fold-const.c.
(dw2_output_indirect_constant_1): Set DECL_INITIAL (decl) to ADDR_EXPR
of decl rather than decl itself.
Jakub Jelinek [Fri, 22 Jun 2018 20:48:57 +0000 (22:48 +0200)]
backport: re PR target/84899 (ICE: in final_scan_insn_1, at final.c:3139 (error: could not split insn))
Backported from mainline
2018-03-16 Jakub Jelinek <jakub@redhat.com>
PR target/84899
* postreload.c (reload_combine_recognize_pattern): Perform
INTVAL addition in unsigned HOST_WIDE_INT type to avoid UB and
truncate_int_for_mode the result for the destination's mode.
Jakub Jelinek [Fri, 22 Jun 2018 20:46:37 +0000 (22:46 +0200)]
backport: re PR tree-optimization/84841 (ICE: tree check: expected ssa_name, have real_cst in rewrite_expr_tree_parallel, at tree-ssa-reassoc.c:4624)
Backported from mainline
2018-03-16 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/84841
* tree-ssa-reassoc.c (INTEGER_CONST_TYPE): Change to 1 << 4 from
1 << 3.
(FLOAT_ONE_CONST_TYPE): Define.
(constant_type): Return FLOAT_ONE_CONST_TYPE for -1.0 and 1.0.
(sort_by_operand_rank): Put entries with higher constant_type last
rather than first to match comments.
Jakub Jelinek [Fri, 22 Jun 2018 20:43:09 +0000 (22:43 +0200)]
backport: re PR c++/84222 ([[deprecated]] class complains about internal class usage)
Backported from mainline
2018-03-15 Jakub Jelinek <jakub@redhat.com>
PR c++/84222
* cp-tree.h (cp_warn_deprecated_use): Declare.
* tree.c (cp_warn_deprecated_use): New function.
* typeck2.c (build_functional_cast): Use it.
* decl.c (grokparms): Likewise.
(grokdeclarator): Likewise. Temporarily push nested class scope
around grokparms call for out of class member definitions.
* g++.dg/warn/deprecated.C (T::member3): Change dg-warning to dg-bogus.
* g++.dg/warn/deprecated-6.C (T::member3): Likewise.
* g++.dg/warn/deprecated-13.C: New test.
Jakub Jelinek [Fri, 22 Jun 2018 20:40:45 +0000 (22:40 +0200)]
backport: re PR c/84853 (ICE: verify_gimple failed (expand_shift_1))
Backported from mainline
2018-03-15 Jakub Jelinek <jakub@redhat.com>
PR c/84853
* c-typeck.c (build_binary_op) <case RSHIFT_EXPR, case LSHIFT_EXPR>:
If code1 is INTEGER_TYPE, only allow code0 VECTOR_TYPE if it has
INTEGER_TYPE element type.
Jakub Jelinek [Fri, 22 Jun 2018 20:38:25 +0000 (22:38 +0200)]
backport: re PR middle-end/84834 (ICE: tree check: expected integer_cst, have complex_cst in to_wide, at tree.h:5527)
Backported from mainline
2018-03-13 Jakub Jelinek <jakub@redhat.com>
PR middle-end/84834
* match.pd ((A & C) != 0 ? D : 0): Use INTEGER_CST@2 instead of
integer_pow2p@2 and test integer_pow2p in condition.
(A < 0 ? C : 0): Similarly for @1.
Jakub Jelinek [Fri, 22 Jun 2018 20:35:29 +0000 (22:35 +0200)]
backport: re PR target/84772 (powerpc-spe: Spurious "is used uninitialized" warning, or possibly incorrect codegen for va_arg(long double))
Backported from mainline
2018-03-09 Jakub Jelinek <jakub@redhat.com>
PR target/84772
* config/rs6000/rs6000.c (rs6000_gimplify_va_arg): Mark va_arg_tmp
temporary TREE_ADDRESSABLE before gimplification of BUILT_IN_MEMCPY.
Jakub Jelinek [Fri, 22 Jun 2018 20:34:33 +0000 (22:34 +0200)]
backport: re PR c++/84076 (Warning about objects through POD mistakenly claims the object is a pointer)
Backported from mainline
2018-03-09 Jason Merrill <jason@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/84076
* call.c (convert_arg_to_ellipsis): Instead of cp_build_addr_expr
build ADDR_EXPR with REFERENCE_TYPE.
(build_over_call): For purposes of check_function_arguments, if
argarray[j] is ADDR_EXPR with REFERENCE_TYPE created above, use
its operand rather than the argument itself.
Jakub Jelinek [Fri, 22 Jun 2018 20:32:15 +0000 (22:32 +0200)]
backport: re PR c++/80598 (-Wunused triggers for functions used in uninstantiated templates)
Backported from mainline
2018-03-08 Jason Merrill <jason@redhat.com>
Jakub Jelinek <jakub@redhat.com>
PR c++/80598
* call.c (build_over_call): In templates set TREE_USED (first_fn) when
not calling mark_used for the benefit of -Wunused-function warning.
Jakub Jelinek [Fri, 22 Jun 2018 20:31:10 +0000 (22:31 +0200)]
backport: re PR tree-optimization/84739 (ICE in get_value_for_expr, at tree-ssa-ccp.c:649)
Backported from mainline
2018-03-08 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/84739
* tree-tailcall.c (find_tail_calls): Check call arguments against
DECL_ARGUMENTS (current_function_decl) rather than
DECL_ARGUMENTS (func) when checking for tail recursion.
Jakub Jelinek [Fri, 22 Jun 2018 20:29:34 +0000 (22:29 +0200)]
backport: re PR target/84700 (ICE on 32-bit BE powerpc targets w/ -misel -O1)
Backported from mainline
2018-03-05 Jakub Jelinek <jakub@redhat.com>
PR target/84700
* combine.c (combine_simplify_rtx): Don't try to simplify if
if_then_else_cond returned non-NULL, but either true_rtx or false_rtx
are equal to x.
Jakub Jelinek [Fri, 22 Jun 2018 20:28:04 +0000 (22:28 +0200)]
backport: re PR c++/84662 (internal compiler error: tree check: expected class 'type', have 'exceptional' (error_mark) in is_bitfield_expr_with_lowered_type, at cp/typeck.c:1944)
Backported from mainline
2018-03-02 Jakub Jelinek <jakub@redhat.com>
PR c++/84662
* pt.c (tsubst_copy_and_build) <case TEMPLATE_ID_EXPR>: Use
RETURN instead of return.
<case POINTER_PLUS_EXPR>: Likewise.
<case CONVERT_EXPR>: If op0 is error_mark_node, just return
it instead of wrapping it into CONVERT_EXPR.
Jonathan Wakely [Fri, 22 Jun 2018 15:58:38 +0000 (16:58 +0100)]
PR libstdc++/86138 prevent implicit instantiation of COW empty rep
The explicit instantiation declarations for std::basic_string are
disabled for C++17 (and later) so that basic_string symbols get
implicitly instantiated in every translation unit that needs them. On
targets that don't support STB_GNU_UNIQUE this leads to multiple copies
of the empty rep symbol for COW strings. In order to detect whether a
COW string needs to deallocate its storage it compares the address with
the empty rep. When there are multiple copies of the empty rep object
the address is not unique, and so string destructors try to delete the
empty rep, which crashes.
In order to guarantee uniqueness of the _S_empty_rep_storage symbol this
patch adds an explicit instantiation declaration for just that symbol.
This means the other symbols are still implicitly instantiated in C++17
code, but for the empty rep the definition in the library gets used.
Separately, there is no need for C++17 code to implicitly instantiate
the I/O functions for strings, so this also restores the explicit
instantiation declarations for those functions.
Backport from mainline
2018-06-22 Jonathan Wakely <jwakely@redhat.com>
Sebastian Huber [Thu, 21 Jun 2018 09:36:40 +0000 (09:36 +0000)]
RISC-V: Add custom RTEMS multilibs
Add multilib variants for -march=rv64imafd, e.g. to support the BOOMv2 core.
Add -mcmodel=medany as a variant of the 64-bit multilibs for RTEMS. The
rationale for this change is that several existing RISC-V chips map the
RAM at 0x80000000. In RTEMS, we do not use virtual memory, so
applications will run at this location which is outside the +-2GiB range
in a 64-bit configuration.
gcc/
* config.gcc (riscv*-*-elf* | riscv*-*-rtems*): Use custom
multilibs for *-*-rtems*.
* config/riscv/t-rtems: New file.
Max Filippov [Tue, 19 Jun 2018 21:01:22 +0000 (21:01 +0000)]
xtensa: fix PR target/65416
The issue is caused by reordering of stack pointer update after stack
space allocation with instructions that write to the allocated stack
space. In windowed ABI register spill area for the previous call frame
is located just below the stack pointer and may be reloaded back into
the register file on movsp.
Implement allocate_stack pattern for windowed ABI configuration and
insert an instruction that prevents reordering of frame memory access
and stack pointer update.
gcc/
2018-06-19 Max Filippov <jcmvbkbc@gmail.com>
Backport from mainline
2018-06-19 Max Filippov <jcmvbkbc@gmail.com>
* config/xtensa/xtensa.md (UNSPEC_FRAME_BLOCKAGE): New unspec
constant.
(allocate_stack, frame_blockage, *frame_blockage): New patterns.
Martin Sebor [Tue, 19 Jun 2018 00:02:30 +0000 (00:02 +0000)]
PR middle-end/82063 - issues with arguments enabled by -Wall
gcc/ChangeLog:
PR middle-end/82063
* calls.c (alloc_max_size): Correct a logic error/typo.
Treat excessive arguments as infinite. Warn for invalid arguments.
* doc/invoke.texi (-Walloc-size-larger-than): Update.
gcc/testsuite/ChangeLog:
PR middle-end/82063
* gcc.dg/Walloc-size-larger-than-1.c: New test.
* gcc.dg/Walloc-size-larger-than-10.c: New test.
* gcc.dg/Walloc-size-larger-than-11.c: New test.
* gcc.dg/Walloc-size-larger-than-12.c: New test.
* gcc.dg/Walloc-size-larger-than-13.c: New test.
* gcc.dg/Walloc-size-larger-than-14.c: New test.
* gcc.dg/Walloc-size-larger-than-15.c: New test.
* gcc.dg/Walloc-size-larger-than-16.c: New test.
* gcc.dg/Walloc-size-larger-than-2.c: New test.
* gcc.dg/Walloc-size-larger-than-3.c: New test.
* gcc.dg/Walloc-size-larger-than-4.c: New test.
* gcc.dg/Walloc-size-larger-than-5.c: New test.
* gcc.dg/Walloc-size-larger-than-6.c: New test.
* gcc.dg/Walloc-size-larger-than-7.c: New test.
* gcc.dg/Walloc-size-larger-than-8.c: New test.
* gcc.dg/Walloc-size-larger-than-9.c: New test.
* gcc.dg/Walloc-size-larger-than.c: New test.
Sebastian Huber [Thu, 14 Jun 2018 05:19:35 +0000 (05:19 +0000)]
RTEMS: Prefer int for int32_t
Common systems like glibc and FreeBSD define int32_t to int. This means
a lot of third party code works well in these cases:
#include <stdint.h>
void f(int32_t);
void f(int);
void g(int32_t *);
void h(void)
{
int i;
g(&i);
}
On RTEMS you got however in C
test.c:5:6: error: conflicting types for 'f'
void f(int);
^
test.c:3:6: note: previous declaration of 'f' was here
void f(int32_t);
^
test.c: In function 'h':
test.c:12:4: warning: passing argument 1 of 'g' from incompatible
pointer type [-Wincompatible-pointer-types]
g(&i);
^
test.c:7:6: note: expected 'int32_t * {aka long int *}' but argument
is of type 'int *' void g(int32_t *);
and C++
test.c: In function 'void h()':
test.c:12:4: error: invalid conversion from 'int*' to 'int32_t* {aka
long int*}' [-fpermissive]
g(&i);
^~
test.c:7:6: note: initializing argument 1 of 'void g(int32_t*)'
void g(int32_t *);
^
This was due to a Newlib speciality which uses long for int32_t if long
is a 32-bit type. To ease the use of third party software in RTEMS we
override this Newlib option now and use int for int32_t if int is a
32-bit type.
projects / thirdparty / gcc.git / log
