2016-08-03 Eric Gallager <egall@gwmail.gwu.edu>
* download_prerequisites: Explicitly remove existing symlinks
before trying to create new ones.
From-SVN: r239082
Require int32plus for tests that assume so, and conditionally skip pr44024.c,
as it only works if the target allows deletion of null pointer checks.
gcc/testsuite/ChangeLog
* gcc.dg/init-excess-2.c: Require int32plus.
* gcc.dg/pr44024.c: Skip if target keeps null pointer checks.
* gcc.dg/pr59963-2.c: Require int32plus.
* gcc.dg/pr71084.c: Cast pointer to intprt_t.
* gcc.dg/unroll-7.c: Require int32plus.
From-SVN: r239065
According to the POWER8 Processor User’s Manual and some
experimentation on power8 hardware, unaligned fp load/store on power8
does not invoke the alignment interrupt.
* config/rs6000/rs6000.h (SLOW_UNALIGNED_ACCESS): Make scalar
float access depend on TARGET_EFFICIENT_UNALIGNED_VSX.
* config/rs6000/rs6000.opt (-mefficient-unaligned-vsx): Renamed
from -mefficient-unaligned-vector. Note that this affects fp too.
From-SVN: r239013
2016-08-02 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/72778
* lra-spills.c (regno_in_use_p): New.
(lra_final_code_change): Use it.
From-SVN: r239000
2016-08-02 Roger Sayle <roger@nextmovesoftware.com>
* expr.c (push_value): Only call flush_quick_stack for non-constant
arguments.
(build_java_throw_out_of_bounds_exception): No longer wrap calls
to _Jv_ThowBadArrayIndex in a COMPOUND_EXPR as no longer needed.
(java_check_reference): Annotate COND_EXPR with __builtin_expect
to indicate that calling _Jv_ThrowNullPointerException is unlikely.
(build_java_arrayaccess): Construct an unlikely COND_EXPR instead
of a TRUTH_ANDIF_EXPR in a COMPOUND_EXPR. Only generate array
index MULT_EXPR when size_exp is not unity.
(build_array_length_annotation): When optimizing, generate a write
to the allocated array's length field to expose constant lengths
to GCC's optimizers.
(build_newarray): Call new build_array_length_annotation.
(build_anewarray): Likewise.
(expand_java_multianewarray): Fix whitespace.
(expand_java_return): Likewise.
(expand_invoke): Likewise.
(load_type_state): Likewise.
From-SVN: r238992
2016-08-02 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/69847
* lra-int.h (struct lra-reg): Use restore_rtx instead of
restore_regno.
(lra_rtx_hash): New.
* lra.c (initialize_lra_reg_info_element): Use restore_rtx instead
of restore_regno.
(lra_rtx_hash): Rename and move lra-remat.c::rtx_hash.
* lra-remat.c (rtx_hash): Rename and Move to lra.c.
* lra-spills.c (lra_final_code_change): Don't delete insn when the
next insn is USE with the same reg as the current insn source.
* lra-constraints.c (curr_insn_transform): Use restore_rtx instead
of restore_regno.
(lra_constraints_init): Call initiate_invariants.
(lra_constraints_finish): Call finish_invariants.
(struct invariant, invariant_t, invariant_ptr_t): New.
(const_invariant_ptr_t, invariants, invariants_pool): New.
(invariant_table, invariant_hash, invariant_eq_p): New.
(insert_invariant, initiate_invariants, finish_invariants): New.
(clear_invariants, invalid_invariant_regs): New.
(inherit_reload_reg, split_reg, fix_bb_live_info): Use restore_rtx
instead of restore_regno.
(invariant_p, process_invariant_for_inheritance): New.
(inherit_in_ebb): Implement invariant inheritance.
(lra_inheritance): Initialize and finalize invalid_invariant_regs.
(remove_inheritance_pseudos): Implement undoing invariant
inheritance.
(undo_optional_reloads, lra_undo_inheritance): Use restore_rtx
instead of restore_regno.
* lra-assigns.c (regno_live_length): New.
(reload_pseudo_compare_func): Use regno_live_length.
(assign_by_spills): Use restore_rtx instead of restore_regno.
(lra_assign): Ditto. Initiate regno_live_length.
From-SVN: r238991
I deleted an 'f' halfway through a line when applying r238977. Not sure
how I managed it, but entirely my fault.
gcc/
* config/aarch64/arm_neon.h (vminnm_f64): Add back missing 'f' from
__builtin_aarch64_fmindf.
From-SVN: r238989
* testsuite/18_support/bad_exception/23591_thread-1.c: Skip test if
options are present that aren't valid for C.
* testsuite/abi/header_cxxabi.c: Likewise.
From-SVN: r238988
* testsuite/tr1/5_numerical_facilities/special_functions/16_hermite/
check_value.cc: Do not add special functions to namespace std in TR1
test.
From-SVN: r238987
PR tree-optimization/34114
* tree-ssa-loop-niter.c (number_of_iterations_ne): Prove no-overflow
information for more control IVs.
gcc/testsuite
PR tree-optimization/34114
* gcc.dg/tree-ssa/loop-42.c: New test.
From-SVN: r238983
[gcc]
2016-08-01 Michael Meissner <meissner@linux.vnet.ibm.com>
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
Add support for vec_extract on vector float, vector int, vector
short, and vector char vector types.
* config/rs6000/rs6000.c (rs6000_expand_vector_extract): Add
vector float, vector int, vector short, and vector char
optimizations on 64-bit ISA 2.07 systems for both constant and
variable element numbers.
(rs6000_split_vec_extract_var): Likewise.
* config/rs6000/vsx.md (vsx_xscvspdp_scalar2): Allow SFmode to be
Altivec registers on ISA 2.07 and above.
(vsx_extract_v4sf): Delete alternative that hard coded element 0,
which never was matched due to the split occuring before register
allocation (and the code would not have worked on little endian
systems if it did match). Allow extracts to go to the Altivec
registers if ISA 2.07 (power8). Change from using "" around the
C++ code to using {}'s.
(vsx_extract_v4sf_<mode>_load): New insn to optimize vector float
vec_extracts when the vector is in memory.
(vsx_extract_v4sf_var): New insn to optimize vector float
vec_extracts when the element number is variable on 64-bit ISA
2.07 systems.
(vsx_extract_<mode>, VSX_EXTRACT_I iterator): Add optimizations
for 64-bit ISA 2.07 as well as ISA 3.0.
(vsx_extract_<mode>_p9, VSX_EXTRACT_I iterator): Likewise.
(vsx_extract_<mode>_p8, VSX_EXTRACT_I iterator): Likewise.
(vsx_extract_<mode>_load, VSX_EXTRACT_I iterator): New insn to
optimize vector int, vector short, and vector char vec_extracts
when the vector is in memory.
(vsx_extract_<mode>_var, VSX_EXTRACT_I iterator): New insn to
optimize vector int, vector short, and vector char vec_extracts
when the element number is variable.
[gcc/testsuite]
2016-08-01 Michael Meissner <meissner@linux.vnet.ibm.com>
* gcc.target/powerpc/vec-extract-5.c: New tests to test
vec_extract for vector float, vector int, vector short, and vector
char.
* gcc.target/powerpc/vec-extract-6.c: Likewise.
* gcc.target/powerpc/vec-extract-7.c: Likewise.
* gcc.target/powerpc/vec-extract-8.c: Likewise.
* gcc.target/powerpc/vec-extract-9.c: Likewise.
From-SVN: r238971
This patch optimizes the prolog and epilog code to reduce the number of
instructions and avoid multiple writes to SP. The key idea is that epilogs
are almost exact reverses of prologs, and thus all the decisions only need
to be taken once. The frame layout is decided in aarch64_layout_frame()
and decisions recorded in the new aarch64_frame fields initial_adjust,
callee_adjust, callee_offset and final_adjust.
A generic frame setup consists of 5 basic steps:
1. sub sp, sp, initial_adjust
2. stp reg1, reg2, [sp, -callee_adjust]! (push if callee_adjust != 0)
3. add fp, sp, callee_offset (if frame_pointer_needed)
4. stp reg3, reg4, [sp, callee_offset + N*16] (store remaining callee-saves)
5. sub sp, sp, final_adjust
The epilog reverses this, and may omit step 3 if alloca wasn't used.
gcc/
* config/aarch64/aarch64.h (aarch64_frame):
Remove padding0 and hardfp_offset. Add locals_offset,
initial_adjust, callee_adjust, callee_offset and final_adjust.
* config/aarch64/aarch64.c (aarch64_layout_frame):
Remove unused padding0 and hardfp_offset initializations.
Choose frame layout and set frame variables accordingly.
Use INVALID_REGNUM instead of FIRST_PSEUDO_REGISTER.
(aarch64_push_regs): Use INVALID_REGNUM, not FIRST_PSEUDO_REGISTER.
(aarch64_pop_regs): Likewise.
(aarch64_expand_prologue): Remove all decision code, just emit
prolog according to frame variables.
(aarch64_expand_epilogue): Remove all decision code, just emit
epilog according to frame variables.
(aarch64_initial_elimination_offset): Use offset to local/arg area.
testsuite/
* gcc.target/aarch64/test_frame_10.c: Fix test to check for a
single stack adjustment, no writeback.
* gcc.target/aarch64/test_frame_12.c: Likewise.
* gcc.target/aarch64/test_frame_13.c: Likewise.
* gcc.target/aarch64/test_frame_15.c: Likewise.
* gcc.target/aarch64/test_frame_6.c: Likewise.
* gcc.target/aarch64/test_frame_7.c: Likewise.
* gcc.target/aarch64/test_frame_8.c: Likewise.
* gcc.target/aarch64/test_frame_16.c: New test.
From-SVN: r238960
* constexpr.c (cxx_eval_pointer_plus_expression): Check constancy
of nelts.
* cp-gimplify.c (cp_fully_fold): Only maybe_constant_value in
C++11 and up.
From-SVN: r238957
TImode register referenced in debug insn can be converted to V1TImode by
scalar to vector optimization. When converting a TImode store to V1TImode,
we need to check all debug insns on its use chain to convert the V1TImode
register to SUBREG TImode if source register is undefined.
gcc/
PR target/72748
* config/i386/i386.c (timode_scalar_chain::convert_insn): Call
fix_debug_reg_uses after changing source register mode to
V1TImode if source register is undefined.
gcc/testsuite/
PR target/72748
* gcc.target/i386/pr72748.c: New test.
From-SVN: r238956
