2012-04-06 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/52668
* module.c: Only mark symbols as use_only if they have been
imported via an only list.
2012-04-06 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/52668
* gfortran.dg/use_only_6.f90: New test.
From-SVN: r186199
Avoid instructions that incur expensive length-changing prefix (LCP) stalls
on some x86-64 implementations, notably Core2 and Corei7. Specifically, a move of
a 16-bit constant into memory requires a length-changing prefix and can incur significant
penalties. Modified an old patch written by H.J to split such instructions
during peephole2.
2012-04-05 Teresa Johnson <tejohnson@google.com>
H.J. Lu <hongjiu.lu@intel.com>
* config/i386/i386.h (ix86_tune_indices): Add
X86_TUNE_LCP_STALL.
* config/i386/i386.md (move immediate to memory peephole2):
Add cases for HImode move when LCP stall avoidance is needed.
* config/i386/i386.c (initial_ix86_tune_features): Initialize
X86_TUNE_LCP_STALL entry.
Co-Authored-By: H.J. Lu <hongjiu.lu@intel.com>
From-SVN: r186176
PR target/50751
* config/sh/sh.c (sh_find_mov_disp_adjust): Take machine_mode as the
first argument instead of mode size. Move displacement calculations
to ...
(mov_insn_size, max_mov_insn_displacement, mov_insn_alignment_mask):
... these new functions.
(disp_adjust): Remove max_mov_disp field.
(sh_legitimate_index_p): Use max_mov_insn_displacement and
mov_insn_alignment_mask.
(sh_address_cost): Use max_mov_insn_displacement.
From-SVN: r186169
2012-04-05 Richard Guenther <rguenther@suse.de>
* gimple.c (walk_gimple_op): Compute val_only for the LHS
of an assigment in the canonical way, avoiding is_gimple_mem_rhs.
(is_gimple_mem_rhs, is_gimple_reg_rhs, is_gimple_stmt): Move ...
* gimplify.c (is_gimple_mem_rhs, is_gimple_reg_rhs, is_gimple_stmt):
... here and make static.
* gimple.h (is_gimple_mem_rhs, is_gimple_reg_rhs, is_gimple_stmt):
Remove.
From-SVN: r186165
2012-04-05 Richard Guenther <rguenther@suse.de>
* tree-ssa-dse.c (dse_optimize_stmt): Remember the stmt
basic-block before removing it.
From-SVN: r186164
2012-04-05 Richard Guenther <rguenther@suse.de>
* tree-ssanames.c (release_dead_ssa_names): Compact the SSA
version namespace as we release the freelist.
From-SVN: r186162
2012-04-05 Bernhard Reutner-Fischer <aldot@gcc.gnu.org>
PR bootstrap/52840
* src/Makefile.am (build-debug): Do not adjust vpath dir, remove
Makefile.tmp
* src/Makefile.in: Adjust as per above.
From-SVN: r186156
* doc/rtl.texi (const_double): Document as sign-extending.
* expmed.c (expand_mult): Ensure we don't use shift
incorrectly.
* emit-rtl.c (immed_double_int_const): Refine to state the
value is signed.
* simplify-rtx.c (mode_signbit_p): Add a fixme for wider than
CONST_DOUBLE integers.
(simplify_const_unary_operation, UNSIGNED_FLOAT): Ensure no
negative values are converted. Fix conversions bigger than
HOST_BITS_PER_WIDE_INT.
(simplify_binary_operation_1): Ensure we don't use shift
incorrectly.
(simplify_immed_subreg): Sign-extend CONST_DOUBLEs.
* explow.c (plus_constant_mode): Add.
(plus_constant): Implement with plus_constant_mode.
* rtl.h (plus_constant_mode): Add.
From-SVN: r186147
2012-04-04 H.J. Lu <hongjiu.lu@intel.com>
PR libitm/52854
* config/x86/target.h (gtm_jmpbuf): Replace long with long long
for x86-64.
From-SVN: r186140
* expr.c (get_bit_range): Add OFFSET parameter and adjust BITPOS.
Change type of BITOFFSET to signed. Make sure the lower bound of
the computed range is non-negative by adjusting OFFSET and BITPOS.
(expand_assignment): Adjust call to get_bit_range.
From-SVN: r186110
* h8300/h8300.c (h8300_current_function_monitor_function_p):
New function. Added to check monitor functions.
(h8300_option_override): Modified to generate error/warning
messages for invalid combinations of different command line
options.
* h8300/h8300.md: Generate 'rte' for monitor functions. Do not
save EXR on stack for monitor function in case of H8S target
when "-mno-exr" is passed.
* h8300/h8300-protos.h
(h8300_current_function_monitor_function_p): Add prototype.
* doc/invoke.texi: Document H8S options.
From-SVN: r186109
2012-04-03 Richard Guenther <rguenther@suse.de>
PR tree-optimization/52808
* tracer.c (tail_duplicate): Return whether we have duplicated
any block.
(tracer): If we have duplicated any block, cleanup the CFG.
* cfghooks.c (duplicate_block): If we duplicated a loop
header but not its loop, destroy the loop because it now has
multiple entries.
* tree-ssa-threadupdate.c (thread_through_loop_header): Tell
the cfg manipulation routines we are not creating a multiple
entry loop.
* gcc.dg/pr52808.c: New testcase.
From-SVN: r186104
* varasm.c (initializer_constant_valid_for_bitfield_p): Return true
for REAL_CST as well.
(output_constructor): Use RECORD_OR_UNION_TYPE_P predicate.
In the bitfield case, if the value is a REAL_CST, convert it first to
an INTEGER_CST.
From-SVN: r186100
2012-04-02 H.J. Lu <hongjiu.lu@intel.com>
* config.gcc: Use i386/biarchx32.h instead of i386/biarch64.h
for --with-abi={x32|mx32} or --with-multilib-list=mx32.
(supported_defaults): Add abi for i[34567]86-*-* and x86_64-*-*.
* config/i386/biarchx32.h: New.
From-SVN: r186099
