* tree-ssa-loop-niter.c (record_estimate): Add "upper" argument.
Update constant estimates of number of iterations.
(record_nonwrapping_iv): Add "upper" argument. "data_size_bounds_p"
argument renamed to "realistic".
(compute_estimated_nb_iterations): Removed.
(record_niter_bound): New function.
(idx_infer_loop_bounds): For possible but unlikely tail arrays,
call record_nonwrapping_iv with upper = false.
(infer_loop_bounds_from_signedness): Pass upper argument to
record_nonwrapping_iv.
(estimate_numbers_of_iterations_loop): Do not call
compute_estimated_nb_iterations. Record estimate based on profile
information. Initialize the constant estimates of number of
iterations.
* tree-data-ref.c (estimated_loop_iterations): Return the recorded
estimates.
* tree-ssa-loop-prefetch.c (loop_prefetch_arrays): Add dump when
number of iterations is too small.
* cfgloop.h (struct nb_iter_bound): Remove "realistic" field.
(EST_NOT_AVAILABLE): Removed.
(struct loop): Replace estimated_nb_iterations by any_upper_bound,
nb_iterations_upper_bound, any_estimate and nb_iterations_estimate
fields.
* gcc.dg/tree-ssa/prefetch-5.c: New test.
From-SVN: r122969
2007-03-15 Manuel Lopez-Ibanez <manu@gcc.gnu.org>
PR c++/24924
* c-opts.c (c_common_post_options): Handle C++ post-processing here.
Set also -pedantic-errors by default for the preprocessor unless
-fpermissive is given.
cp/
* decl.c (cxx_init_decl_processing): Move command-line options
processing to c-opts.c.
testsuite/
* g++.dg/cpp/pedantic-errors.C: New.
* g++.dg/cpp/permissive.C: New.
From-SVN: r122961
2007-03-15 Richard Guenther <rguenther@suse.de>
PR middle-end/29719
PR middle-end/31161
* builtins.c (expand_builtin_int_roundingfn): Always fall
back to floor/ceil and its variants even if they may be
not available.
(expand_builtin_cexpi): As a fallback if we
don't have builtins for sincos or cexp create a function
declaration for cexp and expand to a call to that.
From-SVN: r122958
* cfglayout.c (fixup_reorder_chain): Postpone deleting dead
jump tables, move the call to delete_dead_jumptables from here...
(cfg_layout_finalize): ...to here. But rebuild jump labels first.
* cfgrtl.c (cfg_layout_can_merge_blocks_p): When not optimizing,
don't allow merging of blocks that try_redirect_by_replacing_jump
also does not handle when not optimizing.
From-SVN: r122957
* tree-loop-linear.c (gather_interchange_stats): For multidimensional
arrays, multiply the access strides by the size of the sub-array.
* testsuite/gcc.dg/tree-ssa/ltrans-5.c: New.
From-SVN: r122935
gcc/
200x-xx-xx Richard Sandiford <richard@codesourcery.com>
Phil Edwards <phil@codesourcery.com>
* gthr-vxworks.h: Add an extern "C" wrapper for C++.
(__gthread_once_t): Remove busy field for RTPs.
(__GTHREAD_ONCE_INIT): Update accordingly.
Co-Authored-By: Phil Edwards <phil@codesourcery.com>
From-SVN: r122923
2007-03-13 Seongbae Park <seongbae.park@gmail.com>
PR tree-optimization/30590
* tree-nrv.c (tree_nrv): Check for the partial update of the
return value.
From-SVN: r122909
gcc/ChangeLog:
PR middle-end/31127
* cse.c (cse_find_path): Do not bail out if a basic block that
we already visited now becomes part of a path that starts at a
different basic block. Just disallow this, to make sure we
visit each basic block at most once.
gcc/testsuite/ChangeLog:
PR middle-end/31127
* gcc.dg/pr31127.c: New.
From-SVN: r122900
* ipa-inline.c (cgraph_maybe_hot_edge_p): Look for hot/cold attributes,
when profile esitmate is present, calls with very low frequency are
cold.
From-SVN: r122898
PR tree-optimization/30730
PR tree-optimization/26900
* tree-ssa-loop-niter.c: Include gmp.h.
(bounds): New type.
(mpz_set_double_int, get_type_bounds, mpz_to_double_int,
split_to_var_and_offset, determine_value_range,
bound_difference_of_offsetted_base, refine_bounds_using_guard,
bound_difference, bounds_add, bounds_negate,
number_of_iterations_ne_max, dump_affine_iv): New functions.
(number_of_iterations_ne, number_of_iterations_lt_to_ne,
assert_loop_rolls_lt, assert_loop_rolls_le): Use bounds on the
difference of initial and final value of control iv to validate
results.
(number_of_iterations_cond): Add loop parameter. Determine bounds
on the difference of the extremes of the control iv. Add dumps.
(expand_simple_operations): Handle phi nodes.
(simplify_using_initial_conditions): Do not record used conditions.
(number_of_iterations_exit): Pass loop to number_of_iterations_cond.
Do not set additional_info.
(implies_nonnegative_p, implies_ge_p): Removed.
(derive_constant_upper_bound): Do not use parameter `additional'.
(record_estimate): Parameter `additional' removed. Parameter
`i_bound' added. Do not call derive_constant_upper_bound.
(record_nonwrapping_iv): Use derive_constant_upper_bound to
bound the number of iterations estimate.
(estimate_numbers_of_iterations_loop): Pass the estimate from
the number of iterations analysis to record_estimate.
* tree.h (multiple_of_p): Declare.
* tree-scalar-evolution.c (expression_expensive_p): Removed.
(scev_const_prop): Do not check expression_expensive_p.
* fold-const.c (multiple_of_p): Exported.
* double-int.c (double_int_mask): Exported.
* double-int.h (double_int_mask): Declare.
* tree-flow.h (struct tree_niter_desc): Removed additional_info
field. Added max field.
* gcc.dg/tree-ssa/loop-26.c: New test.
From-SVN: r122896
2007-03-13 David Taylor <taylor@candd.org>
PR driver/12448:
* gcc.c (cpp_unique_options): If -MT or -MQ is seen, don't pass
default -MQ.
From-SVN: r122889
* configure.ac: Test for assembler tolerance to # 0 "".
* configure, config.in: Rebuilt.
* final.c (final_scan_insn): Emit it if HAVE_AS_LINE_ZERO.
From-SVN: r122879
* config/rs6000/darwin-fallback.c: Compile file only on powerpc.
(handle_syscall): Handle direct system calls.
* config/rs6000/darwin.h (HAS_MD_FALLBACK_FRAME_STATE_FOR): Delete.
From-SVN: r122877
ChangeLog:
2007-03-12 Seongbae Park <seongbae.park@gmail.com>
* gcc/doc/invoke.texi (Wvla): New warning.
gcc/ChangeLog:
2007-03-12 Seongbae Park <seongbae.park@gmail.com>
* c-decl.c (warn_variable_length_array): New function.
Refactored from grokdeclarator to handle warn_vla
and handle unnamed array case.
(grokdeclarator): Refactored VLA warning case.
* c.opt (Wvla): New flag.
gcc/cp/ChangeLog:
2007-03-12 Seongbae Park <seongbae.park@gmail.com>
* decl.c (compute_array_index_type): New warning flag warn_vla.
gcc/testsuite/ChangeLog:
2007-03-12 Seongbae Park <seongbae.park@gmail.com>
* gcc.dg/wvla-1.c: New test
* gcc.dg/wvla-2.c: New test
* gcc.dg/wvla-3.c: New test
* gcc.dg/wvla-4.c: New test
* gcc.dg/wvla-5.c: New test
* gcc.dg/wvla-6.c: New test
* gcc.dg/wvla-7.c: New test
* g++.dg/warn/Wvla-1.C: New test
* g++.dg/warn/Wvla-2.C: New test
* g++.dg/warn/Wvla-3.C: New test
From-SVN: r122851
* config/i386/i386.md (fixuns_trunc<mode>hi2): Implement from
fixuns_truncsfhi2 and fixuns_truncdfhi2 using SSEMODEF
mode macro.
(fix_trunc<mode>di_sse): Implement from fix_truncsfdi_sse and
fix_truncdfdi_sse using SSEMODEF mode macro.
(fix_trunc<mode>si_sse): Implement from fix_truncsfsi_sse and
fix_truncdfsi_sse using SSEMODEF mode macro.
(fix_trunc?f?i_sse peephole2): Implement using SSEMODEF mode macro.
(fix_trunc?f?i_sse K8 peephole2): Fix register constraint.
From-SVN: r122839
2007-03-11 Richard Guenther <rguenther@suse.de>
PR tree-optimization/31115
* tree-vrp.c (extract_range_from_binary_expr): Make sure
the shift count is positive and non-anti-range for RSHIFT_EXPR.
A shift count of zero is not special as with *_DIV_EXPR.
(vrp_int_const_binop): Handle RSHIFT_EXPR for determining overflow
direction.
* gcc.dg/torture/pr31115.c: New testcase.
From-SVN: r122821
* tree-data-ref.c (analyze_offset): Add a return value (bool) to
indicate success/failure of the analysis. Add negation to subtrahend
in case of subtraction. Fail if both operands contain constants.
(create_data_ref): Fail if analyze_offset fails.
From-SVN: r122817
* lower-subreg.c: Include except.h.
(decompose_multiword_subregs): Verify that the only control flow
insns we can split are loads to multi-words pseudos.
Handle breaking such blocks after splitting, instead of calling
find_many_sub_basic_blocks.
* loop-unroll.c (split_edge_and_insert): Don't set BB_SUPERBLOCK
on the new basic block. Add a lengthy comment explaining why we
thought this was necessary.
* cfglayout.c (cfg_layout_finalize): Don't break superblocks.
From-SVN: r122807
PR c++/20924
* tree.c (walk_type_fields): Recurse into the element type of
ARRAY_TYPEs if there is a pointer set.
PR c++/20924
* g++.dg/template/array18.C: New test.
From-SVN: r122801