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A recent patch increased GCC's memory consumption!


Hi,

I am a friendly script caring about memory consumption in GCC.  Please
contact jh@suse.cz if something is going wrong.

Comparing memory consumption on compilation of combine.i, insn-attrtab.i,
and generate-3.4.ii I got:


comparing empty function compilation at -O0 level:
    Overall memory needed: 8331k
    Peak memory use before GGC: 3386k
    Peak memory use after GGC: 3033k
    Maximum of released memory in single GGC run: 353k
    Garbage: 525k
    Leak: 3786k
    Overhead: 913k
    GGC runs: 3

comparing empty function compilation at -O0 -g level:
    Overall memory needed: 8347k
    Peak memory use before GGC: 3413k
    Peak memory use after GGC: 3061k
    Maximum of released memory in single GGC run: 352k
    Garbage: 527k
    Leak: 3819k
    Overhead: 917k
    GGC runs: 3

comparing empty function compilation at -O1 level:
    Overall memory needed: 8387k
    Peak memory use before GGC: 3386k
    Peak memory use after GGC: 3033k
    Maximum of released memory in single GGC run: 353k
    Garbage: 530k
    Leak: 3789k
    Overhead: 913k
    GGC runs: 3

comparing empty function compilation at -O2 level:
    Overall memory needed: 8403k
    Peak memory use before GGC: 3386k
    Peak memory use after GGC: 3034k
    Maximum of released memory in single GGC run: 352k
    Garbage: 533k
    Leak: 3790k
    Overhead: 914k
    GGC runs: 3

comparing empty function compilation at -O3 level:
    Overall memory needed: 8403k
    Peak memory use before GGC: 3386k
    Peak memory use after GGC: 3034k
    Maximum of released memory in single GGC run: 352k
    Garbage: 533k
    Leak: 3790k
    Overhead: 914k
    GGC runs: 3

comparing combine.c compilation at -O0 level:
    Overall memory needed: 23759k
    Peak memory use before GGC: 10325k
    Peak memory use after GGC: 9556k
    Maximum of released memory in single GGC run: 1905k
    Garbage: 39063k
    Leak: 8844k
    Overhead: 5685k
    GGC runs: 254

comparing combine.c compilation at -O0 -g level:
    Overall memory needed: 25639k
    Peak memory use before GGC: 11988k
    Peak memory use after GGC: 11348k
    Maximum of released memory in single GGC run: 1516k
    Garbage: 39412k
    Leak: 11737k
    Overhead: 6391k
    GGC runs: 250

comparing combine.c compilation at -O1 level:
    Overall memory needed: 36303k
    Peak memory use before GGC: 18978k
    Peak memory use after GGC: 18787k
    Maximum of released memory in single GGC run: 1369k -> 1370k
    Garbage: 53254k -> 53264k
    Leak: 8899k
    Overhead: 6745k -> 6747k
    GGC runs: 326

comparing combine.c compilation at -O2 level:
    Overall memory needed: 38547k -> 38551k
    Peak memory use before GGC: 19032k
    Peak memory use after GGC: 18843k
    Maximum of released memory in single GGC run: 1404k
    Garbage: 71784k -> 71793k
    Leak: 9020k
    Overhead: 8878k -> 8880k
    GGC runs: 388

comparing combine.c compilation at -O3 level:
    Overall memory needed: 41363k
    Peak memory use before GGC: 19276k
    Peak memory use after GGC: 18967k
    Maximum of released memory in single GGC run: 2103k
    Garbage: 93363k -> 93374k
    Leak: 9133k
    Overhead: 11540k -> 11542k
    GGC runs: 417

comparing insn-attrtab.c compilation at -O0 level:
    Overall memory needed: 140355k
    Peak memory use before GGC: 60814k
    Peak memory use after GGC: 34064k
    Maximum of released memory in single GGC run: 34384k
    Garbage: 132285k
    Leak: 11334k
    Overhead: 14975k
    GGC runs: 198

comparing insn-attrtab.c compilation at -O0 -g level:
    Overall memory needed: 141595k -> 141591k
    Peak memory use before GGC: 61976k
    Peak memory use after GGC: 35225k
    Maximum of released memory in single GGC run: 34385k
    Garbage: 132506k
    Leak: 13043k
    Overhead: 15372k
    GGC runs: 201

comparing insn-attrtab.c compilation at -O1 level:
    Overall memory needed: 151591k -> 151603k
    Peak memory use before GGC: 59311k
    Peak memory use after GGC: 55086k
    Maximum of released memory in single GGC run: 23586k
    Garbage: 217482k -> 217482k
    Leak: 11462k
    Overhead: 25167k -> 25167k
    GGC runs: 229

comparing insn-attrtab.c compilation at -O2 level:
    Overall memory needed: 190819k -> 190795k
    Peak memory use before GGC: 59194k
    Peak memory use after GGC: 55147k
    Maximum of released memory in single GGC run: 21338k
    Garbage: 253145k -> 253145k
    Leak: 11457k
    Overhead: 30630k -> 30630k
    GGC runs: 254

comparing insn-attrtab.c compilation at -O3 level:
    Overall memory needed: 196531k
    Peak memory use before GGC: 71750k
    Peak memory use after GGC: 65981k
    Maximum of released memory in single GGC run: 22952k
    Garbage: 282515k -> 282515k
    Leak: 11465k
    Overhead: 32427k -> 32427k
    GGC runs: 257

comparing Gerald's testcase PR8361 compilation at -O0 level:
    Overall memory needed: 156567k -> 156595k
    Peak memory use before GGC: 91659k
    Peak memory use after GGC: 90740k
    Maximum of released memory in single GGC run: 18002k
    Garbage: 210854k -> 210854k
    Leak: 55672k
    Overhead: 26877k -> 26877k
    GGC runs: 397

comparing Gerald's testcase PR8361 compilation at -O0 -g level:
    Overall memory needed: 177315k
    Peak memory use before GGC: 104549k
    Peak memory use after GGC: 103513k
    Maximum of released memory in single GGC run: 18639k
    Garbage: 216705k -> 216705k
    Leak: 79101k
    Overhead: 32845k -> 32845k
    GGC runs: 373

comparing Gerald's testcase PR8361 compilation at -O1 level:
    Overall memory needed: 139137k -> 139145k
    Peak memory use before GGC: 93652k
    Peak memory use after GGC: 92725k
    Maximum of released memory in single GGC run: 17407k
    Garbage: 319579k -> 319590k
    Leak: 55592k
    Overhead: 32821k -> 32823k
    GGC runs: 502

comparing Gerald's testcase PR8361 compilation at -O2 level:
    Overall memory needed: 148609k -> 148605k
    Peak memory use before GGC: 94136k
    Peak memory use after GGC: 93204k
    Maximum of released memory in single GGC run: 17407k
    Garbage: 376003k -> 376015k
    Leak: 56348k
    Overhead: 39007k -> 39009k
    GGC runs: 563

comparing Gerald's testcase PR8361 compilation at -O3 level:
    Overall memory needed: 152209k -> 152213k
    Peak memory use before GGC: 95170k
    Peak memory use after GGC: 94095k
    Maximum of released memory in single GGC run: 17828k
    Garbage: 417597k -> 417609k
    Leak: 56666k
    Overhead: 42528k -> 42530k
    GGC runs: 589

comparing PR rtl-optimization/28071 testcase compilation at -O0 level:
    Overall memory needed: 381000k
    Peak memory use before GGC: 103467k
    Peak memory use after GGC: 59120k
    Maximum of released memory in single GGC run: 50583k
    Garbage: 179674k
    Leak: 8998k
    Overhead: 31652k
    GGC runs: 65

comparing PR rtl-optimization/28071 testcase compilation at -O0 -g level:
    Overall memory needed: 381816k
    Peak memory use before GGC: 104113k
    Peak memory use after GGC: 59766k
    Maximum of released memory in single GGC run: 50583k
    Garbage: 179778k
    Leak: 10766k
    Overhead: 32147k
    GGC runs: 72

comparing PR rtl-optimization/28071 testcase compilation at -O1 level:
  Amount of produced GGC garbage increased from 235816k to 236132k, overall 0.13%
    Overall memory needed: 294611k -> 294499k
    Peak memory use before GGC: 82809k
    Peak memory use after GGC: 75162k
    Maximum of released memory in single GGC run: 40023k
    Garbage: 235816k -> 236132k
    Leak: 18368k
    Overhead: 32669k -> 32733k
    GGC runs: 72

comparing PR rtl-optimization/28071 testcase compilation at -O2 level:
  Amount of produced GGC garbage increased from 245912k to 246185k, overall 0.11%
    Overall memory needed: 299827k -> 299743k
    Peak memory use before GGC: 80149k
    Peak memory use after GGC: 75163k
    Maximum of released memory in single GGC run: 33756k
    Garbage: 245912k -> 246185k
    Leak: 18450k
    Overhead: 34901k -> 34956k
    GGC runs: 85

comparing PR rtl-optimization/28071 testcase compilation at -O3 -fno-tree-pre -fno-tree-fre level:
  Amount of produced GGC garbage increased from 356177k to 356541k, overall 0.10%
    Overall memory needed: 1012675k -> 1012999k
    Peak memory use before GGC: 168790k
    Peak memory use after GGC: 158354k
    Maximum of released memory in single GGC run: 83548k -> 83549k
    Garbage: 356177k -> 356541k
    Leak: 28532k
    Overhead: 46844k -> 46917k
    GGC runs: 69

Head of the ChangeLog is:

--- /usr/src/SpecTests/sandbox-britten-memory/x86_64/mem-result/ChangeLog	2007-08-02 00:04:45.000000000 +0000
+++ /usr/src/SpecTests/sandbox-britten-memory/gcc/gcc/ChangeLog	2007-08-02 16:30:30.000000000 +0000
@@ -1,3 +1,335 @@
+2007-08-02  Steve Ellcey  <sje@cup.hp.com>
+
+	* config/ia64/constraints.md ("U"): Make constraint vector only.
+
+2007-08-02  Nathan Froyd  <froydnj@codesourcery.com>
+
+	PR middle-end/25446
+	* c-objc-common.c (c_cannot_inline_tree_fn): Check for an
+	always_inline attribute on the function decl.
+
+2007-08-02  Nathan Froyd  <froydnj@codesourcery.com>
+
+	PR middle-end/25445
+	* varasm.c (default_binds_local_p_1): Consult flag_whole_program
+	if we are compiling with -fPIC.
+
+2007-08-02  Sandra Loosemore  <sandra@codesourcery.com>
+	    Nigel Stephens  <nigel@mips.com>
+
+	* longlong.h [__mips__] (count_leading_zeros, COUNT_LEADING_ZEROS_0):
+	Define for MIPS32 and MIPS64.
+
+2007-08-02  Nick Clifton  <nickc@redhat.com>
+
+	* config/host-hpux.c: Change copyright header to refer to version
+	3 of the GNU General Public License and to point readers at the
+	COPYING3 file and the FSF's license web page.
+	* config/alpha/predicates.md, config/alpha/vms-ld.c,
+	config/alpha/linux.h, config/alpha/alpha.opt,
+	config/alpha/linux-elf.h, config/alpha/vms.h, config/alpha/elf.h,
+	config/alpha/vms-unwind.h, config/alpha/ev4.md,
+	config/alpha/ev6.md, config/alpha/alpha.c, config/alpha/vms-cc.c,
+	config/alpha/alpha.h, config/alpha/sync.md,
+	config/alpha/openbsd.h, config/alpha/alpha.md,
+	config/alpha/alpha-modes.def, config/alpha/ev5.md,
+	config/alpha/alpha-protos.h, config/alpha/freebsd.h,
+	config/alpha/osf5.h, config/alpha/netbsd.h, config/alpha/vms64.h,
+	config/alpha/constraints.md, config/alpha/osf.h,
+	config/alpha/xm-vms.h, config/alpha/unicosmk.h, config/linux.h,
+	config/frv/predicates.md, config/frv/frv.h, config/frv/linux.h,
+	config/frv/frv.md, config/frv/frv.opt, config/frv/frv-modes.def,
+	config/frv/frv-asm.h, config/frv/frv-protos.h,
+	config/frv/frv-abi.h, config/frv/frv.c, config/s390/tpf.h,
+	config/s390/s390.c, config/s390/predicates.md, config/s390/s390.h,
+	config/s390/linux.h, config/s390/tpf.md, config/s390/tpf.opt,
+	config/s390/2064.md, config/s390/2084.md, config/s390/s390.md,
+	config/s390/s390.opt, config/s390/s390-modes.def,
+	config/s390/fixdfdi.h, config/s390/constraints.md,
+	config/s390/s390-protos.h, config/s390/s390x.h, config/elfos.h,
+	config/dbxcoff.h, config/m32c/predicates.md, config/m32c/cond.md,
+	config/m32c/m32c.c, config/m32c/minmax.md, config/m32c/blkmov.md,
+	config/m32c/m32c-pragma.c, config/m32c/m32c.h,
+	config/m32c/prologue.md, config/m32c/m32c.abi,
+	config/m32c/muldiv.md, config/m32c/bitops.md, config/m32c/mov.md,
+	config/m32c/addsub.md, config/m32c/m32c.md, config/m32c/m32c.opt,
+	config/m32c/t-m32c, config/m32c/m32c-modes.def,
+	config/m32c/jump.md, config/m32c/shift.md,
+	config/m32c/m32c-protos.h, config/libgloss.h,
+	config/spu/spu-protos.h, config/spu/predicates.md,
+	config/spu/spu-builtins.h, config/spu/spu.c,
+	config/spu/spu-builtins.def, config/spu/spu-builtins.md,
+	config/spu/spu.h, config/spu/spu-elf.h, config/spu/constraints.md,
+	config/spu/spu.md, config/spu/spu-c.c, config/spu/spu.opt,
+	config/spu/spu-modes.def, config/spu/t-spu-elf, config/interix.h,
+	config/sparc/hypersparc.md, config/sparc/predicates.md,
+	config/sparc/linux.h, config/sparc/sp64-elf.h,
+	config/sparc/supersparc.md, config/sparc/cypress.md,
+	config/sparc/openbsd1-64.h, config/sparc/openbsd64.h,
+	config/sparc/niagara.md, config/sparc/sparc.md,
+	config/sparc/long-double-switch.opt, config/sparc/ultra3.md,
+	config/sparc/sparc.opt, config/sparc/sync.md,
+	config/sparc/sp-elf.h, config/sparc/sparc-protos.h,
+	config/sparc/ultra1_2.md, config/sparc/biarch64.h,
+	config/sparc/sparc.c, config/sparc/little-endian.opt,
+	config/sparc/sysv4-only.h, config/sparc/sparc.h,
+	config/sparc/linux64.h, config/sparc/freebsd.h,
+	config/sparc/sol2.h, config/sparc/rtemself.h,
+	config/sparc/netbsd-elf.h, config/sparc/vxworks.h,
+	config/sparc/sparc-modes.def, config/sparc/sparclet.md,
+	config/sparc/sysv4.h, config/vx-common.h, config/netbsd-aout.h,
+	config/flat.h, config/m32r/m32r.md, config/m32r/predicates.md,
+	config/m32r/little.h, config/m32r/m32r.c, config/m32r/m32r.opt,
+	config/m32r/linux.h, config/m32r/constraints.md,
+	config/m32r/m32r.h, config/m32r/m32r-protos.h, config/vxworks.opt,
+	config/darwin-c.c, config/darwin.opt, config/i386/i386.h,
+	config/i386/cygming.h, config/i386/linux.h, config/i386/cygwin.h,
+	config/i386/i386.md, config/i386/netware-crt0.c,
+	config/i386/sco5.h, config/i386/mmx.md, config/i386/vx-common.h,
+	config/i386/kaos-i386.h, config/i386/winnt-stubs.c,
+	config/i386/netbsd64.h, config/i386/djgpp.h, config/i386/gas.h,
+	config/i386/sol2.h, config/i386/constraints.md,
+	config/i386/netware-libgcc.c, config/i386/sysv5.h,
+	config/i386/predicates.md, config/i386/geode.md,
+	config/i386/x86-64.h, config/i386/kfreebsd-gnu.h,
+	config/i386/freebsd64.h, config/i386/vxworksae.h,
+	config/i386/pentium.md, config/i386/lynx.h, config/i386/i386elf.h,
+	config/i386/rtemself.h, config/i386/netbsd-elf.h,
+	config/i386/ppro.md, config/i386/k6.md, config/i386/netware.c,
+	config/i386/netware.h, config/i386/i386-modes.def,
+	config/i386/sysv4-cpp.h, config/i386/i386-interix.h,
+	config/i386/cygwin1.c, config/i386/djgpp.opt, config/i386/uwin.h,
+	config/i386/unix.h, config/i386/ptx4-i.h, config/i386/xm-djgpp.h,
+	config/i386/att.h, config/i386/winnt.c, config/i386/beos-elf.h,
+	config/i386/sol2-10.h, config/i386/darwin64.h, config/i386/sse.md,
+	config/i386/i386.opt, config/i386/bsd.h, config/i386/cygming.opt,
+	config/i386/xm-mingw32.h, config/i386/linux64.h,
+	config/i386/openbsdelf.h, config/i386/xm-cygwin.h,
+	config/i386/sco5.opt, config/i386/darwin.h, config/i386/mingw32.h,
+	config/i386/winnt-cxx.c, config/i386/i386-interix3.h,
+	config/i386/nwld.c, config/i386/nwld.h, config/i386/host-cygwin.c,
+	config/i386/cygwin2.c, config/i386/i386-protos.h,
+	config/i386/sync.md, config/i386/openbsd.h,
+	config/i386/host-mingw32.c, config/i386/i386-aout.h,
+	config/i386/nto.h, config/i386/biarch64.h,
+	config/i386/i386-coff.h, config/i386/freebsd.h,
+	config/i386/driver-i386.c, config/i386/knetbsd-gnu.h,
+	config/i386/host-i386-darwin.c, config/i386/vxworks.h,
+	config/i386/crtdll.h, config/i386/i386.c, config/i386/sysv4.h,
+	config/darwin-protos.h, config/linux.opt, config/sol2.c,
+	config/sol2.h, config/sh/symbian.c, config/sh/sh-protos.h,
+	config/sh/linux.h, config/sh/elf.h, config/sh/superh.h,
+	config/sh/sh4.md, config/sh/coff.h, config/sh/newlib.h,
+	config/sh/embed-elf.h, config/sh/symbian-pre.h, config/sh/rtems.h,
+	config/sh/kaos-sh.h, config/sh/sh4a.md, config/sh/constraints.md,
+	config/sh/sh64.h, config/sh/sh.opt, config/sh/symbian-post.h,
+	config/sh/sh-c.c, config/sh/predicates.md, config/sh/sh.c,
+	config/sh/sh.h, config/sh/shmedia.md, config/sh/sh-modes.def,
+	config/sh/little.h, config/sh/sh1.md, config/sh/sh4-300.md,
+	config/sh/superh64.h, config/sh/rtemself.h,
+	config/sh/netbsd-elf.h, config/sh/sh.md, config/sh/vxworks.h,
+	config/usegas.h, config/svr3.h, config/pdp11/pdp11-protos.h,
+	config/pdp11/2bsd.h, config/pdp11/pdp11.md, config/pdp11/pdp11.c,
+	config/pdp11/pdp11.opt, config/pdp11/pdp11-modes.def,
+	config/pdp11/pdp11.h, config/avr/rtems.h, config/avr/avr-protos.h,
+	config/avr/predicates.md, config/avr/constraints.md,
+	config/avr/avr.md, config/avr/avr.c, config/avr/avr.opt,
+	config/avr/avr.h, config/sol2-protos.h, config/dbxelf.h,
+	config/lynx.opt, config/crx/crx.h, config/crx/crx-protos.h,
+	config/crx/crx.md, config/crx/crx.c, config/crx/crx.opt,
+	config/c4x/c4x-c.c, config/c4x/c4x.c, config/c4x/c4x.opt,
+	config/c4x/c4x-modes.def, config/c4x/rtems.h,
+	config/c4x/predicates.md, config/c4x/c4x.h,
+	config/c4x/c4x-protos.h, config/c4x/c4x.md, config/kfreebsd-gnu.h,
+	config/xtensa/predicates.md, config/xtensa/xtensa.c,
+	config/xtensa/linux.h, config/xtensa/xtensa.h,
+	config/xtensa/elf.h, config/xtensa/xtensa.md,
+	config/xtensa/xtensa.opt, config/xtensa/constraints.md,
+	config/xtensa/xtensa-protos.h, config/dbx.h,
+	config/stormy16/predicates.md, config/stormy16/stormy16.md,
+	config/stormy16/stormy16.c, config/stormy16/stormy16.opt,
+	config/stormy16/stormy16.h, config/stormy16/stormy16-protos.h,
+	config/host-solaris.c, config/fr30/fr30.h,
+	config/fr30/predicates.md, config/fr30/fr30-protos.h,
+	config/fr30/fr30.md, config/fr30/fr30.c, config/fr30/fr30.opt,
+	config/vxworksae.h, config/sol2-c.c, config/lynx.h,
+	config/m68hc11/m68hc11-protos.h, config/m68hc11/predicates.md,
+	config/m68hc11/m68hc11.md, config/m68hc11/m68hc11.c,
+	config/m68hc11/m68hc11.opt, config/m68hc11/m68hc11.h,
+	config/m68hc11/m68hc12.h, config/openbsd-oldgas.h,
+	config/host-linux.c, config/interix3.h, config/cris/cris.c,
+	config/cris/predicates.md, config/cris/linux.h,
+	config/cris/cris.h, config/cris/aout.h, config/cris/cris.md,
+	config/cris/linux.opt, config/cris/cris.opt, config/cris/elf.opt,
+	config/cris/aout.opt, config/cris/cris-protos.h,
+	config/vxworks-dummy.h, config/netbsd.h, config/netbsd-elf.h,
+	config/iq2000/iq2000.h, config/iq2000/predicates.md,
+	config/iq2000/iq2000-protos.h, config/iq2000/iq2000.md,
+	config/iq2000/iq2000.c, config/iq2000/iq2000.opt,
+	config/host-darwin.c, config/mt/mt.md, config/mt/mt.c,
+	config/mt/mt.opt, config/mt/t-mt, config/mt/mt.h,
+	config/mt/mt-protos.h, config/svr4.h, config/host-darwin.h,
+	config/chorus.h, config/mn10300/mn10300.c,
+	config/mn10300/mn10300.opt, config/mn10300/predicates.md,
+	config/mn10300/mn10300.h, config/mn10300/linux.h,
+	config/mn10300/constraints.md, config/mn10300/mn10300-protos.h,
+	config/mn10300/mn10300.md, config/ia64/predicates.md,
+	config/ia64/itanium1.md, config/ia64/unwind-ia64.h,
+	config/ia64/ia64-c.c, config/ia64/sync.md, config/ia64/ia64.c,
+	config/ia64/itanium2.md, config/ia64/ia64.h, config/ia64/vect.md,
+	config/ia64/freebsd.h, config/ia64/ia64.md,
+	config/ia64/ia64-modes.def, config/ia64/constraints.md,
+	config/ia64/hpux.h, config/ia64/ia64-protos.h, config/windiss.h,
+	config/gofast.h, config/rtems.h, config/sol2-10.h,
+	config/m68k/predicates.md, config/m68k/m68k.md,
+	config/m68k/linux.h, config/m68k/m68k-modes.def,
+	config/m68k/print-sysroot-suffix.sh, config/m68k/m68k-protos.h,
+	config/m68k/coff.h, config/m68k/m68k-none.h, config/m68k/ieee.opt,
+	config/m68k/openbsd.h, config/m68k/m68k-aout.h,
+	config/m68k/m68k.opt, config/m68k/m68020-elf.h,
+	config/m68k/m68kelf.h, config/m68k/m68k-devices.def,
+	config/m68k/uclinux-oldabi.h, config/m68k/m68k.c,
+	config/m68k/constraints.md, config/m68k/rtemself.h,
+	config/m68k/netbsd-elf.h, config/m68k/m68k.h,
+	config/m68k/uclinux.h, config/rs6000/power4.md,
+	config/rs6000/host-darwin.c, config/rs6000/6xx.md,
+	config/rs6000/linux.h, config/rs6000/eabi.h,
+	config/rs6000/aix41.opt, config/rs6000/xcoff.h,
+	config/rs6000/secureplt.h, config/rs6000/linuxspe.h,
+	config/rs6000/eabialtivec.h, config/rs6000/8540.md,
+	config/rs6000/darwin8.h, config/rs6000/kaos-ppc.h,
+	config/rs6000/windiss.h, config/rs6000/603.md,
+	config/rs6000/aix41.h, config/rs6000/cell.md,
+	config/rs6000/mpc.md, config/rs6000/aix43.h, config/rs6000/beos.h,
+	config/rs6000/gnu.h, config/rs6000/rtems.h, config/rs6000/aix.opt,
+	config/rs6000/darwin.md, config/rs6000/darwin64.h,
+	config/rs6000/default64.h, config/rs6000/7xx.md,
+	config/rs6000/darwin.opt, config/rs6000/spe.md,
+	config/rs6000/rs6000.opt, config/rs6000/rs6000-c.c,
+	config/rs6000/rios2.md, config/rs6000/linuxaltivec.h,
+	config/rs6000/7450.md, config/rs6000/linux64.h,
+	config/rs6000/constraints.md, config/rs6000/440.md,
+	config/rs6000/darwin.h, config/rs6000/host-ppc64-darwin.c,
+	config/rs6000/rs6000.c, config/rs6000/aix52.h,
+	config/rs6000/rs6000.h, config/rs6000/power6.md,
+	config/rs6000/predicates.md, config/rs6000/altivec.md,
+	config/rs6000/aix64.opt, config/rs6000/rios1.md,
+	config/rs6000/rs6000-modes.def, config/rs6000/rs64.md,
+	config/rs6000/eabisim.h, config/rs6000/sysv4le.h,
+	config/rs6000/darwin7.h, config/rs6000/dfp.md,
+	config/rs6000/linux64.opt, config/rs6000/sync.md,
+	config/rs6000/vxworksae.h, config/rs6000/power5.md,
+	config/rs6000/lynx.h, config/rs6000/biarch64.h,
+	config/rs6000/rs6000.md, config/rs6000/sysv4.opt,
+	config/rs6000/eabispe.h, config/rs6000/e500.h,
+	config/rs6000/freebsd.h, config/rs6000/rs6000-protos.h,
+	config/rs6000/netbsd.h, config/rs6000/e500-double.h,
+	config/rs6000/aix.h, config/rs6000/vxworks.h,
+	config/rs6000/40x.md, config/rs6000/aix51.h,
+	config/rs6000/sysv4.h, config/arc/arc-protos.h, config/arc/arc.md,
+	config/arc/arc.c, config/arc/arc.opt, config/arc/arc-modes.def,
+	config/arc/arc.h, config/mcore/mcore-elf.h,
+	config/mcore/mcore-protos.h, config/mcore/predicates.md,
+	config/mcore/mcore.md, config/mcore/mcore.c,
+	config/mcore/mcore.opt, config/mcore/mcore.h,
+	config/mcore/mcore-pe.h, config/darwin.c, config/freebsd-nthr.h,
+	config/score/predicates.md, config/score/score-version.h,
+	config/score/score-protos.h, config/score/misc.md,
+	config/score/elf.h, config/score/score.c, config/score/mac.md,
+	config/score/score7.md, config/score/score.h,
+	config/score/score-conv.h, config/score/score-mdaux.c,
+	config/score/score.md, config/score/score.opt,
+	config/score/score-modes.def, config/score/score-mdaux.h,
+	config/score/mul-div.S, config/arm/uclinux-elf.h,
+	config/arm/semi.h, config/arm/ecos-elf.h, config/arm/arm1020e.md,
+	config/arm/symbian.h, config/arm/linux-elf.h,
+	config/arm/arm1026ejs.md, config/arm/arm1136jfs.md,
+	config/arm/elf.h, config/arm/aout.h, config/arm/arm.c,
+	config/arm/thumb2.md, config/arm/vec-common.md, config/arm/coff.h,
+	config/arm/strongarm-pe.h, config/arm/arm.h,
+	config/arm/cortex-a8-neon.md, config/arm/semiaof.h,
+	config/arm/cortex-a8.md, config/arm/uclinux-eabi.h,
+	config/arm/arm-modes.def, config/arm/linux-eabi.h,
+	config/arm/rtems-elf.h, config/arm/neon-schedgen.ml,
+	config/arm/arm-cores.def, config/arm/arm-protos.h,
+	config/arm/vfp.md, config/arm/aof.h, config/arm/linux-gas.h,
+	config/arm/wince-pe.h, config/arm/neon.md,
+	config/arm/constraints.md, config/arm/neon.ml,
+	config/arm/xscale-elf.h, config/arm/strongarm-coff.h,
+	config/arm/arm.opt, config/arm/arm926ejs.md,
+	config/arm/predicates.md, config/arm/iwmmxt.md,
+	config/arm/arm_neon.h, config/arm/unknown-elf.h,
+	config/arm/kaos-arm.h, config/arm/bpabi.h, config/arm/pe.opt,
+	config/arm/neon-testgen.ml, config/arm/arm.md,
+	config/arm/xscale-coff.h, config/arm/pe.c,
+	config/arm/arm-generic.md, config/arm/pe.h,
+	config/arm/kaos-strongarm.h, config/arm/freebsd.h,
+	config/arm/neon-docgen.ml, config/arm/netbsd.h, config/arm/fpa.md,
+	config/arm/strongarm-elf.h, config/arm/cirrus.md,
+	config/arm/netbsd-elf.h, config/arm/vxworks.h,
+	config/arm/neon-gen.ml, config/kaos.h, config/darwin-driver.c,
+	config/pa/predicates.md, config/pa/pa64-hpux.h,
+	config/pa/pa-hpux.opt, config/pa/som.h, config/pa/pa-hpux1010.opt,
+	config/pa/pa-hpux1111.opt, config/pa/pa-pro-end.h,
+	config/pa/elf.h, config/pa/fptr.c, config/pa/pa64-linux.h,
+	config/pa/pa.md, config/pa/pa.opt, config/pa/pa-hpux.h,
+	config/pa/pa-hpux10.h, config/pa/pa-hpux11.h,
+	config/pa/pa-hpux1010.h, config/pa/pa-protos.h,
+	config/pa/pa-osf.h, config/pa/pa-hpux1111.h, config/pa/pa-64.h,
+	config/pa/milli64.S, config/pa/pa.c, config/pa/pa-linux.h,
+	config/pa/pa.h, config/pa/pa32-linux.h, config/pa/pa64-hpux.opt,
+	config/pa/pa64-regs.h, config/pa/pa-modes.def,
+	config/pa/constraints.md, config/darwin9.h, config/mips/4100.md,
+	config/mips/linux.h, config/mips/elfoabi.h, config/mips/elf.h,
+	config/mips/sdb.h, config/mips/windiss.h, config/mips/rtems.h,
+	config/mips/3000.md, config/mips/iris5.h, config/mips/5000.md,
+	config/mips/7000.md, config/mips/9000.md, config/mips/4600.md,
+	config/mips/linux64.h, config/mips/elforion.h,
+	config/mips/constraints.md, config/mips/generic.md,
+	config/mips/predicates.md, config/mips/4300.md,
+	config/mips/mips-ps-3d.md, config/mips/iris.h, config/mips/24k.md,
+	config/mips/mips.md, config/mips/mips.opt, config/mips/4k.md,
+	config/mips/5k.md, config/mips/vr4120-div.S,
+	config/mips/openbsd.h, config/mips/iris6.h, config/mips/4000.md,
+	config/mips/mips-protos.h, config/mips/6000.md,
+	config/mips/mips.c, config/mips/mips.h, config/mips/r3900.h,
+	config/mips/74k.md, config/mips/netbsd.h, config/mips/vxworks.h,
+	config/mips/mips-modes.def, config/mips/vr.h,
+	config/soft-fp/t-softfp, config/openbsd.h, config/ptx4.h,
+	config/freebsd-spec.h, config/vax/vax.c, config/vax/openbsd.h,
+	config/vax/vax.h, config/vax/elf.h, config/vax/vax.md,
+	config/vax/bsd.h, config/vax/vax.opt, config/vax/vax-modes.def,
+	config/vax/openbsd1.h, config/vax/netbsd.h,
+	config/vax/vax-protos.h, config/vax/netbsd-elf.h,
+	config/vax/vaxv.h, config/vax/ultrix.h, config/freebsd.h,
+	config/h8300/rtems.h, config/h8300/predicates.md,
+	config/h8300/h8300.c, config/h8300/h8300.h, config/h8300/elf.h,
+	config/h8300/h8300.md, config/h8300/h8300.opt,
+	config/h8300/coff.h, config/h8300/h8300-protos.h,
+	config/v850/v850.md, config/v850/predicates.md,
+	config/v850/v850-c.c, config/v850/v850.c, config/v850/v850.opt,
+	config/v850/v850.h, config/v850/v850-protos.h, config/vxworks.c,
+	config/knetbsd-gnu.h, config/sol2-6.h, config/vxworks.h,
+	config/mmix/mmix.h, config/mmix/predicates.md,
+	config/mmix/mmix-protos.h, config/mmix/mmix.md,
+	config/mmix/mmix.c, config/mmix/mmix.opt,
+	config/mmix/mmix-modes.def, config/bfin/bfin.opt,
+	config/bfin/rtems.h, config/bfin/bfin-modes.def,
+	config/bfin/predicates.md, config/bfin/bfin-protos.h,
+	config/bfin/bfin.c, config/bfin/bfin.h, config/bfin/bfin.md:
+	Likewise.
+
+2007-08-02  Richard Sandiford  <richard@codesourcery.com>
+
+	* emit-rtl.c (reset_used_decls): Rename to...
+	(set_used_decls): ...this.  Set the used flag rather than clearing it.
+	(unshare_all_rtl_again): Update accordingly.  Set flags on argument
+	DECL_RTLs rather than resetting them.
+
+2007-08-02  Andreas Krebbel  <krebbel1@de.ibm.com>
+
+	* config/s390/s390.md ("*xordi3_cconly"): Change xr to xg.
+
 2007-08-01  Sandra Loosemore  <sandra@codesourcery.com>
 
 	* reload.c (find_reloads_address_part):  Pass correct MEMREFLOC
--- /usr/src/SpecTests/sandbox-britten-memory/x86_64/mem-result/ChangeLog.cp	2007-07-30 22:54:31.000000000 +0000
+++ /usr/src/SpecTests/sandbox-britten-memory/gcc/gcc/cp/ChangeLog	2007-08-02 16:29:56.000000000 +0000
@@ -1,3 +1,22 @@
+2007-08-02  Nick Clifton  <nickc@redhat.com>
+
+	* typeck.c: Change copyright header to refer to version 3 of the
+	GNU General Public License and to point readers at the COPYING3
+	file and the FSF's license web page.
+	* optimize.c, lang-specs.h, init.c, class.c, repo.c, decl.c,
+	config-lang.in, cp-tree.def, call.c, decl.h, ptree.c,
+	Make-lang.in, method.c, rtti.c, cp-objcp-common.c, g++spec.c,
+	cp-objcp-common.h, except.c, error.c, operators.def, cvt.c,
+	tree.c, mangle.c, cp-tree.h, dump.c, search.c, friend.c, expr.c,
+	cp-gimplify.c, cxx-pretty-print.c, cp-lang.c, typeck2.c, pt.c,
+	cxx-pretty-print.h, semantics.c, name-lookup.c, lex.c, decl2.c,
+	name-lookup.h, parser.c: Likewise.
+
+2007-08-01  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	PR middle-end/32668
+	* call.c (magic_varargs_p): Honor the "type generic" attribute.
+
 2007-07-30  Paolo Carlini  <pcarlini@suse.de>
 
 	PR c++/32108


The results can be reproduced by building a compiler with

--enable-gather-detailed-mem-stats targetting x86-64

and compiling preprocessed combine.c or testcase from PR8632 with:

-fmem-report --param=ggc-min-heapsize=1024 --param=ggc-min-expand=1 -Ox -Q

The memory consumption summary appears in the dump after detailed listing
of the places they are allocated in.  Peak memory consumption is actually
computed by looking for maximal value in {GC XXXX -> YYYY} report.

Your testing script.


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