This implements the freeing back of large chunks in the ggc madvise path
Richard Guenther asked for. This way on systems with limited
address space malloc() and other allocators still have
a chance to get back at some of the memory ggc freed. The
fragmented pages are still just given back, but the address space
stays allocated.
I tried freeing only aligned 2MB areas to optimize for 2MB huge
pages, but the hit rate was quite low, so I switched to 1MB+
unaligned areas.
v2: Hardcode free unit size instead of param
gcc/:
2011-10-18 Andi Kleen <ak@linux.intel.com>
* ggc-page (release_pages): First free large continuous
chunks in the madvise path.
From-SVN: r180648
This one place in ggc forgot to round page_entry->bytes to the
next page boundary, which lead to all the heuristics in freeing to
check for continuous memory failing. Round here too, like all other
allocators already do. The memory consumed should be the same
for MMAP because the kernel would round anyways. It may slightly
increase memory usage when malloc groups are used.
This will also increase the hitrate on the free page list
slightly.
gcc/:
2011-10-18 Andi Kleen <ak@linux.intel.com>
* ggc-page.c (alloc_pages): Always round up to entry_size.
From-SVN: r180647
* config/i386/morestack.S: Correct CFI information to do proper
returns throughout function. In 32-bit mode, save %ebx so that it
is restored on unwind.
From-SVN: r180633
PR target/49313
* config/avr/avr.md (parityhi2): Expand allowing pseudos.
(*parityhi2): New pre-reload insn-and-split to map 16-bit parity
to the libgcc insn.
(*parityqihi2): Same for 8-bit parity.
From-SVN: r180620
2011-10-28 Steven G. Kargl <kargl@gcc.gnu.org>
* check.c (gfc_check_atan_2): Typo in comment.
(gfc_check_nearest): If 's' is constant, check that it is not 0.
* simplify.c (simplify_dshift, gfc_simplify_ibclr, gfc_simplify_ibits,
gfc_simplify_ibset, simplify_shift, gfc_simplify_ishftc,
gfc_simplify_nearest): Remove dead code.
2011-10-28 Steven G. Kargl <kargl@gcc.gnu.org>
* gfortran.dg/nearest_5.f90: New test.
From-SVN: r180618
ada:
PR target/50678
* init.c (Darwin/__gnat_error_handler): Apply a work-around to the
bug [filed as radar #10302855], which is inconsistent unwind data
for sigtramp.
Co-Authored-By: Eric Botcazou <ebotcazou@adacore.com>
From-SVN: r180613
PR rtl-optimization/47918
* reload1.c (set_initial_label_offsets): Use initial offsets
for labels on the nonlocal_goto_handler_labels chain.
From-SVN: r180611
gcc:
* config/rs6000/t-darwin (LIB2FUNCS_STATIC_EXTRA):
Move darwin-fpsave.asm from here to ... LIB2FUNCS_EXTRA.
(LIB2FUNCS_EXTRA): Add darwin-gpsave.asm.
(TARGET_LIBGCC2_CFLAGS): Ensure that fPIC and -pipe are inherited from
config/t-darwin.
* config/rs6000/darwin.h (FP_SAVE_INLINE): Adjust to enable.
(GP_SAVE_INLINE): Likewise.
(SAVE_FP_PREFIX, SAVE_FP_SUFFIX, RESTORE_FP_PREFIX,
RESTORE_FP_SUFFIX): Set to empty strings.
* config/rs6000/rs6000.c (rs6000_savres_strategy): Implement for Darwin.
(debug_stack_info): Print savres_strategy.
(rs6000_savres_routine_name): Implement for Darwin.
(rs6000_make_savres_rtx): Adjust used register for Darwin.
(rs6000_emit_prologue): Implement out-of-line saves for Darwin.
(rs6000_output_function_prologue): Don't emit .extern for Mach-O.
(rs6000_emit_epilogue): Implement out-of-line saves for Darwin.
* config/rs6000/darwin-gpsave.asm: New file.
From-SVN: r180610
* config/i386/sse.md (VI4SD_AVX2): Removed.
(VI48_AVX2, VI128_128, VI48_128, VI48_256): New mode iterators.
(vashl<mode>3): Use VI12_128 iterator instead of VI124_128.
Add another expander using VI48_128 iterator for
TARGET_AVX2 || TARGET_XOP and another using VI48_256 iterator
for TARGET_AVX2.
(vlshr<mode>3): Likewise. Change register_operand predicate to
nonimmediate_operand on last operand in the VI12_128 expander.
(vashr<mode>3): Use VI128_128 iterator instead of VI124_128.
(vashrv4si3, vashrv8si3): New expanders.
(avx2_ashrvv8si, avx2_ashrvv4si, avx2_<lshift>vv8si,
avx2_<lshift>vv2di): Removed.
(avx2_ashrv<mode>): New insn with VI4_AVX2 iterator.
(avx2_<lshift>v<mode>): Macroize using VI48_AVX2
iterator. Simplify pattern.
* gcc.dg/vshift-1.c: New test.
* gcc.dg/vshift-2.c: New test.
* gcc.target/i386/xop-vshift-1.c: New test.
* gcc.target/i386/xop-vshift-2.c: New test.
* gcc.target/i386/avx2-vshift-1.c: New test.
From-SVN: r180609
2010-10-28 Richard Guenther <rguenther@suse.de>
PR driver/50876
* lto-wrapper.c (get_options_from_collect_gcc_options):
Properly count arguments.
(run_gcc): Use an obstack to collect argv, properly separate
switches and their arguments.
From-SVN: r180608
2011-10-28 Richard B. Kreckel <kreckel@ginac.de>
* include/std/complex (__complex_acosh): Just use '< _Tp()'.
* include/tr1/complex (__complex_acosh): Likewise.
From-SVN: r180607
gcc/
* config/sparc/sparc.md (snedi_special): Only match when not VIS3.
(*snedi_zero): Likewise.
(*snedi_zero_trunc): Likewise.
(snedi_special_vis3): New expander.
(*snedi_zero_vis3): New insn.
(*snedi_zero_trunc_vis3): Likewise.
(*sltu_insn_vis3): Likewise.
(*sltu_insn_vis3_trunc): Likewise.
(addxc): Likewise.
(*addxc_trunc_sp64_vis3): Likewise.
* config/sparc/sparc.c (emit_scc_insn): When VIS3 use the
gen_snedi_special_vis3 expander, and try GTU/LTU addx based
sequences on DImode values.
gcc/testsuite/
* gcc.target/sparc/setcc-3.c: New test.
From-SVN: r180602
* config/i386/sse.md (avx_cvtpd2dq256_2, avx_cvttpd2dq256_2,
vec_pack_sfix_trunc_v4df, vec_pack_sfix_v4df): New expanders.
(*avx_cvtpd2dq256_2, *avx_cvttpd2dq256_2): New insns.
* gcc.target/i386/sse2-cvt-1.c: New test.
* gcc.target/i386/sse2-cvt-2.c: New test.
* gcc.target/i386/avx-cvt-1.c: New test.
* gcc.target/i386/avx-cvt-2.c: New test.
* gcc.target/i386/avx2-cvt-1.c: New test.
* gcc.target/i386/avx2-cvt-2.c: New test.
From-SVN: r180580
* config/i386/i386.c (ix86_print_operand): Handle 'q' and 'x'
overrides for -masm=intel memory.
* config/i386/sse.md (sse2_cvtdq2pd, sse2_cvtps2pd,
sse4_1_<code>v8qiv8hi2, avx2_<code>v8qiv8si2,
sse4_1_<code>v4hiv4si2, avx2_<code>v4hiv4di2,
sse4_1_<code>v2siv2di2): Use %q1 instead of %1 for -masm=intel.
(sse4_1_<code>v4qiv4si2, avx2_<code>v4qiv4di2,
sse4_1_<code>v2hiv2di2): Use %k1 instead of %1 for -masm=intel.
(sse4_1_<code>v2qiv2di2): Use %w1 instead of %1 for -masm=intel.
From-SVN: r180579
* tree-ssa-strlen.c: Include expr.h.
(get_stridx): Don't use c_strlen, instead use string_constant
and compute string length from it.
* Makefile.in (tree-ssa-strlen.o): Depend on $(EXPR_H).
From-SVN: r180574
PR rtl-optimization/46603
PR bootstrap/50879
* reload.c (push_reload): In the out case, restore previous behavior
for subregs that don't have word mode.
From-SVN: r180572
* cppdefault.c: Undef NATIVE_SYSTEM_HEADER_DIR if
CROSS_DIRECTORY_STRUCTURE is defined and TARGET_SYSTEM_ROOT is
not.
(cpp_include_defaults): Only use NATIVE_SYSTEM_HEADER_DIR if it is
defined.
From-SVN: r180569
* optabs.c (expand_vec_perm): Use the correct mode for scaling the
selector. Save the qimode constant selector for later use by the
qimode vec_perm pattern.
From-SVN: r180567
* config/c6x/c6x.c (unit_req_imbalance, res_mii): Cast the first arg
to unit_req_factor to the right enum type.
(get_unit_operand_masks, reshuffle_units, try_rename_operands,
hwloop_optimize): Remove unused variables.
From-SVN: r180565
