Re: [PATCH] Add a new option "-fmerge-bitfields" (patch / doc inside)
On Thu, 17 Apr 2014 11:59:16 +
Zoran Jovanovic wrote:
> --- a/gcc/doc/invoke.texi
> +++ b/gcc/doc/invoke.texi
> @@ -7789,6 +7789,11 @@ pointer alignment information.
> This pass only operates on local scalar variables and is enabled by default
> at @option{-O} and higher. It requires that @option{-ftree-ccp} is enabled.
>
> +@item -fmerge-bitfields
> +@opindex fmerge-bitfields
> +Combines several adjacent bit-field accesses that copy values
> +from one memory location to another into one single bit-field access.
> +
> @item -ftree-ccp
> @opindex ftree-ccp
> Perform sparse conditional constant propagation (CCP) on trees. This
Can you mention that it's enabled at level -O2 here? Also don't forget to
add it to the list of flags enabled by -O2 that appears earlier (@item -O2).
That list is woefully out of date but let's not make it any worse.
--
Ryan Hillpsn: dirtyepic_sk
gcc-porting/toolchain/wxwidgets @ gentoo.org
47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463
signature.asc
Description: PGP signature
Re: [PATCH] Fix PR59626, _FORTIFY_SOURCE wrappers and LTO
On Fri, 4 Apr 2014 08:18:26 +0200 Jan Hubicka wrote: > Hi, > here is an updated version of my earlier ipa.c change. It turns out that the > problem was that I did not drop always_inline. > In this version I just drop always_inline attribute on all functions whose > body is removed. The patch will affect non-LTO compilation, too, but IMO > only by making us to not inline&diagnose the cases where indirect call to > always inline is turned direct in between early opts and inline. Does that > seem acceptable? (I personally would preffer this over inventing yet another > way to special case always_inline for LTO only; we never made any strong > promises on always_inline and indirect calls) > > Honza > > * lto-cgraph.c (input_overwrite_node): Check that partitioning > flags are set only during streaming. > * ipa.c (process_references, walk_polymorphic_call_targets, > symtab_remove_unreachable_nodes): Drop bodies of always inline > after early inlining. > (symtab_remove_unreachable_nodes): Remove always_inline attribute. > > * gcc.dg/lto/pr59626_0.c: New testcase. > * gcc.dg/lto/pr59626_1.c: New testcase. Would it be possible to backport this to 4.8? It fixes a number of issues we're seeing, including a couple unrelated to LTO (eg. PR50506). -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: Enale -fno-fat-lto-objects by default
On Mon, 18 Nov 2013 19:04:59 +0100 Jan Hubicka wrote: > Hi, > this patch switches the default for fat-lto-objects as was documented for a > while. -ffat-lto-objects doubles compilation time and often makes users to > not notice that LTO was not used at all (because they forgot to use > gcc-ar/gcc-nm plugins). > > Sadly I had to add -ffat-lto-objects to bootstrap. This is because I do not > know how to convince our build machinery to use gcc-ar/gcc-nm during the > stage2+ > > ltobootstrapped/regtested ppc64-linux, OK? > > Honza > > * config/bootstrap-lto.mk: Use -ffat-lto-objects. > * common.opt (ffat-lto-objects): Disable by default. > * doc/invoke.texi (fat-lto-objects): Update documentation. > * opts.c: Enable fat-lto-objects on lto plugin disable setups. Hi. You seem to have included some unrelated -fipa-sem-equality stuff in common.opt and opts.c with this commit. -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH] Final removal of mudflap
On Sat, 26 Oct 2013 14:41:01 -0600 Jeff Law wrote: > Here's the final patch to remove mudflap. Per the multiple > recommendations, it leaves the options as nops and warns for them. Can you write something about this for changes.html? -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH][x86] march aliases
On Mon, 23 Dec 2013 05:10:06 -0800 "H.J. Lu" wrote: > This is the patch I checked in. I will submit separate patches for > other parts. Please be sure to update changes.html. -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH][1-3] New configure option to enable Position independent executable as default.
On Wed, 13 Nov 2013 23:28:45 +0100
Magnus Granberg wrote:
> Hi
> This patchset will add a new configure options --enable-default-pie.
> With the new option enable will make it pass -fPIE and -pie from the gcc and
> g++ frontend. Have only add the support for two targets but should work on
> more targes. In configure.ac we add the new option. We can't compile the
> compiler or the crt stuff with -fPIE it will brake the PCH and the crtbegin
> and crtend files. The disabling is done in the Makefiles. The needed spec is
> added to DRIVER_SELF_SPECS. We disable all the profiling test for the linking
> will fail.Tested on x86_64 linux (Gentoo).
>
> /Magnus Granberg
Hey Magnus. Some nits:
> --- a/gcc/configure.ac2013-09-25 18:10:35.0 +0200
> +++ b/gcc/configure.ac2013-10-22 21:26:56.287602139 +0200
> @@ -5434,6 +5434,31 @@ if test x"${LINKER_HASH_STYLE}" != x; th
> [The linker hash style])
> fi
>
> +# Check whether --enable-default-pie was given and target have the support.
> +AC_ARG_ENABLE(default-pie,
> +[AS_HELP_STRING([--enable-default-pie], [Enable Position independent
> executable as default.
Help strings begin with a lowercase letter and do not end with a period. "enable
Position Independent Executables by default".
> + If we have suppot for it when compiling and linking.
> + Linux targets supported i?86 and x86_64.])],
I would drop these lines.
> +enable_default_pie=$enableval,
> +enable_default_pie=no)
> +if test x$enable_default_pie = xyes; then
> + AC_MSG_CHECKING(if $target support to default with -fPIE and link with
> -pie as default)
"if $target supports default PIE"
> + enable_default_pie=no
> + case $target in
> +i?86*-*-linux* | x86_64*-*-linux*)
> + enable_default_pie=yes
> + ;;
> +*)
> + ;;
> +esac
> + AC_MSG_RESULT($enable_default_pie)
> +fi
> +if test x$enable_default_pie == xyes ; then
> + AC_DEFINE(ENABLE_DEFAULT_PIE, 1,
> + [Define if your target support default-pie and you have enable it.])
"supports default PIE and it is enabled."
> +fi
> +AC_SUBST([enable_default_pie])
> +
> # Configure the subdirectories
> # AC_CONFIG_SUBDIRS($subdirs)
>
> --- a/gcc/doc/install.texi2013-10-01 19:29:40.0 +0200
> +++ b/gcc/doc/install.texi2013-11-09 15:40:20.831402110 +0100
> @@ -1421,6 +1421,11 @@ do a @samp{make -C gcc gnatlib_and_tools
> Specify that the run-time libraries for stack smashing protection
> should not be built.
>
> +@item --enable-default-pie
> +We will turn on @option{-fPIE} and @option{-pie} as default when
> +compileing and linking if the support is there. We only support
> +i?86-*-linux* and x86-64-*-linux* as target for now.
"Turn on @option{-fPIE} and @option{-pie} by default if supported.
Currently supported targets are i?86-*-linux* and x86-64-*-linux*."
Also two spaces between sentences.
> --- a/gcc/doc/invoke.texi 2012-03-01 10:57:59.0 +0100
> +++ b/gcc/doc/invoke.texi 2012-07-30 00:57:03.766847851 +0200
> @@ -9457,6 +9480,12 @@ For predictable results, you must also s
> that were used to generate code (@option{-fpie}, @option{-fPIE},
> or model suboptions) when you specify this option.
>
> +NOTE: With configure --enable-default-pie this option is enabled by default
Extra space (also in the hunk for fPIE).
> +for C, C++, ObjC, ObjC++, if none of @option{-fno-PIE}, @option{-fno-pie},
> +@option{-fPIC}, @option{-fpic}, @option{-fno-PIC}, @option{-fno-pic},
> +@option{-nostdlib}, @option{-nostartfiles}, @option{-shared},
> +@option{-nodefaultlibs}, nor @option{static} are found.
Looks like nodefaultlibs is missing from PIE_DRIVER_SELF_SPECS or this needs
to be updated.
Thanks!
--
Ryan Hillpsn: dirtyepic_sk
gcc-porting/toolchain/wxwidgets @ gentoo.org
47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463
signature.asc
Description: PGP signature
Re: [PATCH, i386] PR 57927: -march=core-avx2 different than -march=native on INTEL Haswell (i7-4700K)
On Tue, 27 Aug 2013 19:41:09 +0200 Uros Bizjak wrote: > On Tue, Aug 27, 2013 at 7:36 PM, H.J. Lu wrote: > > >>> As reported in [1] the host processor detection has not yet been updated > >>> to recognize Intel Ivy Bridge and Haswell processors. > >>> This small patch adds the detection of these processors and assumes > >>> core-avx2 as march for unknown processors of the PENTIUMPRO family that > >>> support AVX2. > >> > >> I have committed slightly improved (attached) patch that uses > >> core-avx-i for IvyBridge and adds another IvyBridge model number. > >> While there, I also reordered a bunch of statements. > >> > >> Thanks, > >> Uros. > > > > Page C-3 in ntel optimization guide shows: > > > > 06_3CH, 06_45H, 06_46H Intel microarchitecture Haswell > > 06_3AH, 06_3EH Intel microarchitecture Ivy Bridge > > 06_2AH, 06_2DH Intel microarchitecture Sandy Bridge > > 06_25H, 06_2CH, 06_2FH Intel microarchitecture Westmere > > 06_1AH, 06_1EH, 06_1FH, Intel microarchitecture Nehalem > > 06_2EH > > 06_17H, 06_1DH Enhanced Intel Core microarchitecture > > 06_0FH Intel Core microarchitecture > > > > At least, we should add 0x45 and 0x46 to Haswell. > > OK, the patch is pre-approved. Can these changes be backported to 4.8 and the Ivy Bridge parts to 4.7 as well? We've had a couple reports of bad -march=native results for Haswell on 4.7. I can file PRs if you're interested. -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [RFC] Parallel build broken on trunk.
On Wed, 21 Nov 2012 13:15:34 + Marcus Shawcroft wrote: > Thanks for looking at this Laurynas. > > I've committed the attached to trunk. > > > /Marcus > > 2012-11-21 Marcus Shawcroft > > * Makefile.in (gengtype-lex.o): Add dependency on $(BCONFIG_H). This also affects 4.7. Can we get a backport please? -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH] [libatomic] Add --enable-werror.
On Mon, 8 Jul 2013 20:19:24 -0600 Ryan Hill wrote: Ping. > On Mon, 1 Jul 2013 14:55:35 -0600 > Ryan Hill wrote: > > Ping. > http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00032.html > > > libatomic is currently unconditionally built with -Werror. This patch adds > > --enable-werror to control it (enabled by default). Bootstrapped and tested > > on x86_64, and inspected build logs to ensure it was doing what it should. > > > > I'm assuming copyright assignment isn't necessary for a small change like > > this. I will also need someone to check this in for me please. > > > > gcc/libatomic/ > > 2013-06-30 Ryan Hill > > > > * configure.ac: Add --enable-werror. > > (XCFLAGS): Use it. > > * configure: Regenerate. > > > > --- > > libatomic/configure.ac | 10 -- > > 1 file changed, 8 insertions(+), 2 deletions(-) > > > > diff --git a/libatomic/configure.ac b/libatomic/configure.ac > > index 0dc4a98..4020d23 100644 > > --- a/libatomic/configure.ac > > +++ b/libatomic/configure.ac > > @@ -226,9 +226,15 @@ LIBAT_ENABLE_SYMVERS > > CFLAGS="$save_CFLAGS" > > AC_CACHE_SAVE > > > > -# Add -Wall -Werror if we are using GCC. > > +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], > > + [turns on -Werror @<:@default=yes@:>@])]) > > +# Add -Wall if we are using GCC. > > if test "x$GCC" = "xyes"; then > > - XCFLAGS="$XCFLAGS -Wall -Werror" > > + XCFLAGS="$XCFLAGS -Wall" > > + # Add -Werror if requested. > > + if test "x$enable_werror" != "xno"; then > > +XCFLAGS="$XCFLAGS -Werror" > > + fi > > fi > > > > XCFLAGS="$XCFLAGS $XPCFLAGS" -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH] [libitm] Add --enable-werror.
On Mon, 8 Jul 2013 20:20:01 -0600 Ryan Hill wrote: Ping. > On Mon, 1 Jul 2013 14:56:01 -0600 > Ryan Hill wrote: > > Ping. > http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00033.html > > > > libitm is currently unconditionally built with -Werror. This patch adds > > --enable-werror to control it (enabled by default). Bootstrapped and tested > > on x86_64, and inspected build logs to ensure it was doing what it should. > > > > I'm assuming copyright assignment isn't necessary for a small change like > > this. I will also need someone to check this in for me please. > > > > > > gcc/libitm/ > > 2013-06-30 Ryan Hill > > > > * configure.ac: Add --enable-werror. > > (XCFLAGS): Use it. > > * configure: Regenerate. > > > > --- > > libitm/configure.ac | 10 -- > > 1 file changed, 8 insertions(+), 2 deletions(-) > > > > diff --git a/libitm/configure.ac b/libitm/configure.ac > > index ff41266..5a9400d 100644 > > --- a/libitm/configure.ac > > +++ b/libitm/configure.ac > > @@ -252,9 +252,15 @@ GCC_CHECK_ELF_STYLE_WEAKREF > > CFLAGS="$save_CFLAGS" > > AC_CACHE_SAVE > > > > -# Add -Wall -Werror if we are using GCC. > > +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], > > + [turns on -Werror @<:@default=yes@:>@])]) > > +# Add -Wall if we are using GCC. > > if test "x$GCC" = "xyes"; then > > - XCFLAGS="$XCFLAGS -Wall -Werror" > > + XCFLAGS="$XCFLAGS -Wall" > > + # Add -Werror if requested. > > + if test "x$enable_werror" != "xno"; then > > +XCFLAGS="$XCFLAGS -Werror" > > + fi > > fi > > > > XCFLAGS="$XCFLAGS $XPCFLAGS" > > > -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH] [libitm] Add --enable-werror.
On Mon, 1 Jul 2013 14:56:01 -0600 Ryan Hill wrote: Ping. http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00033.html > libitm is currently unconditionally built with -Werror. This patch adds > --enable-werror to control it (enabled by default). Bootstrapped and tested > on x86_64, and inspected build logs to ensure it was doing what it should. > > I'm assuming copyright assignment isn't necessary for a small change like > this. I will also need someone to check this in for me please. > > > gcc/libitm/ > 2013-06-30 Ryan Hill > > * configure.ac: Add --enable-werror. > (XCFLAGS): Use it. > * configure: Regenerate. > > --- > libitm/configure.ac | 10 -- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/libitm/configure.ac b/libitm/configure.ac > index ff41266..5a9400d 100644 > --- a/libitm/configure.ac > +++ b/libitm/configure.ac > @@ -252,9 +252,15 @@ GCC_CHECK_ELF_STYLE_WEAKREF > CFLAGS="$save_CFLAGS" > AC_CACHE_SAVE > > -# Add -Wall -Werror if we are using GCC. > +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], > + [turns on -Werror @<:@default=yes@:>@])]) > +# Add -Wall if we are using GCC. > if test "x$GCC" = "xyes"; then > - XCFLAGS="$XCFLAGS -Wall -Werror" > + XCFLAGS="$XCFLAGS -Wall" > + # Add -Werror if requested. > + if test "x$enable_werror" != "xno"; then > +XCFLAGS="$XCFLAGS -Werror" > + fi > fi > > XCFLAGS="$XCFLAGS $XPCFLAGS" -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
Re: [PATCH] [libatomic] Add --enable-werror.
On Mon, 1 Jul 2013 14:55:35 -0600 Ryan Hill wrote: Ping. http://gcc.gnu.org/ml/gcc-patches/2013-07/msg00032.html > libatomic is currently unconditionally built with -Werror. This patch adds > --enable-werror to control it (enabled by default). Bootstrapped and tested > on x86_64, and inspected build logs to ensure it was doing what it should. > > I'm assuming copyright assignment isn't necessary for a small change like > this. I will also need someone to check this in for me please. > > gcc/libatomic/ > 2013-06-30 Ryan Hill > > * configure.ac: Add --enable-werror. > (XCFLAGS): Use it. > * configure: Regenerate. > > --- > libatomic/configure.ac | 10 -- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/libatomic/configure.ac b/libatomic/configure.ac > index 0dc4a98..4020d23 100644 > --- a/libatomic/configure.ac > +++ b/libatomic/configure.ac > @@ -226,9 +226,15 @@ LIBAT_ENABLE_SYMVERS > CFLAGS="$save_CFLAGS" > AC_CACHE_SAVE > > -# Add -Wall -Werror if we are using GCC. > +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], > + [turns on -Werror @<:@default=yes@:>@])]) > +# Add -Wall if we are using GCC. > if test "x$GCC" = "xyes"; then > - XCFLAGS="$XCFLAGS -Wall -Werror" > + XCFLAGS="$XCFLAGS -Wall" > + # Add -Werror if requested. > + if test "x$enable_werror" != "xno"; then > +XCFLAGS="$XCFLAGS -Werror" > + fi > fi > > XCFLAGS="$XCFLAGS $XPCFLAGS" -- Ryan Hillpsn: dirtyepic_sk gcc-porting/toolchain/wxwidgets @ gentoo.org 47C3 6D62 4864 0E49 8E9E 7F92 ED38 BD49 957A 8463 signature.asc Description: PGP signature
[PATCH] [libatomic] Add --enable-werror.
libatomic is currently unconditionally built with -Werror. This patch adds --enable-werror to control it (enabled by default). Bootstrapped and tested on x86_64, and inspected build logs to ensure it was doing what it should. I'm assuming copyright assignment isn't necessary for a small change like this. I will also need someone to check this in for me please. gcc/libatomic/ 2013-06-30 Ryan Hill * configure.ac: Add --enable-werror. (XCFLAGS): Use it. * configure: Regenerate. --- libatomic/configure.ac | 10 -- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libatomic/configure.ac b/libatomic/configure.ac index 0dc4a98..4020d23 100644 --- a/libatomic/configure.ac +++ b/libatomic/configure.ac @@ -226,9 +226,15 @@ LIBAT_ENABLE_SYMVERS CFLAGS="$save_CFLAGS" AC_CACHE_SAVE -# Add -Wall -Werror if we are using GCC. +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], + [turns on -Werror @<:@default=yes@:>@])]) +# Add -Wall if we are using GCC. if test "x$GCC" = "xyes"; then - XCFLAGS="$XCFLAGS -Wall -Werror" + XCFLAGS="$XCFLAGS -Wall" + # Add -Werror if requested. + if test "x$enable_werror" != "xno"; then +XCFLAGS="$XCFLAGS -Werror" + fi fi XCFLAGS="$XCFLAGS $XPCFLAGS" -- 1.8.2.1
[PATCH] [libitm] Add --enable-werror.
libitm is currently unconditionally built with -Werror. This patch adds --enable-werror to control it (enabled by default). Bootstrapped and tested on x86_64, and inspected build logs to ensure it was doing what it should. I'm assuming copyright assignment isn't necessary for a small change like this. I will also need someone to check this in for me please. gcc/libitm/ 2013-06-30 Ryan Hill * configure.ac: Add --enable-werror. (XCFLAGS): Use it. * configure: Regenerate. --- libitm/configure.ac | 10 -- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/libitm/configure.ac b/libitm/configure.ac index ff41266..5a9400d 100644 --- a/libitm/configure.ac +++ b/libitm/configure.ac @@ -252,9 +252,15 @@ GCC_CHECK_ELF_STYLE_WEAKREF CFLAGS="$save_CFLAGS" AC_CACHE_SAVE -# Add -Wall -Werror if we are using GCC. +AC_ARG_ENABLE(werror, [AS_HELP_STRING([--enable-werror], + [turns on -Werror @<:@default=yes@:>@])]) +# Add -Wall if we are using GCC. if test "x$GCC" = "xyes"; then - XCFLAGS="$XCFLAGS -Wall -Werror" + XCFLAGS="$XCFLAGS -Wall" + # Add -Werror if requested. + if test "x$enable_werror" != "xno"; then +XCFLAGS="$XCFLAGS -Werror" + fi fi XCFLAGS="$XCFLAGS $XPCFLAGS" -- 1.8.2.1
Re: PATCH: Turn on -fomit-frame-pointer by default for 32bit Linux/x86
This change seems to have broken bootstrap with -march=pentium{2,3,-m} on
the 4.6 branch.
http://gcc.gnu.org/PR53728
--
gcc-porting
toolchain, wxwidgetslearn a language baby, it's that kind of place
@ gentoo.org where low card is hunger and high card is taste
signature.asc
Description: PGP signature
Re: [wwwdocs] gcc-4.6/porting_to.html
On Wed, 16 Mar 2011 23:51:30 -0700 Benjamin Kosnik wrote: > Needs some more work, here's a rough draft. The one I've seen most often other than including cstddef is due to linker options starting with -- (eg. --export-dynamic, --no-undefined) now being errors. Previously they were just silently ignored. The fix of course is to prepend "-Wl," to these flags. http://gcc.gnu.org/PR46410 -- fonts, gcc-porting, it makes no sense how it makes no sense toolchain, wxwidgets but i'll take it free anytime @ gentoo.orgEFFD 380E 047A 4B51 D2BD C64F 8AA8 8346 F9A4 0662 signature.asc Description: PGP signature
