Yvan Roux
2017-07-13 15:59:07 UTC
The Linaro Toolchain Working Group (TCWG) is pleased to announce the 2017.07
snapshot of Linaro GCC 6 and 7 source packages.
o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug
(present since GCC 5, see link below) that affects conformance to the procedure
call standard (AAPCS). The bug affects some C++ code where class objects are
passed by value to functions and could result in incorrect or inconsistent code
being generated. If the option -Wpsabi is enabled (on by default) the compiler
will emit a diagnostic note for code that might be affected by this ABI change.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
For an explanation of the changes please see the following website:
https://gcc.gnu.org/gcc-7/changes.html
o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn250046 and
includes performance improvements and bug fixes backported from mainline GCC.
The contents of this snapshot will be part of the 2017.08 stable[2] quarterly
release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.07/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 7.1+svn250046
* Backport of [Bugfix] [AArch32] PR target/71778 ICE using
non-constant argument to Neon intrinsic that requires constant
arguments
* Backport of [Bugfix] [AArch64] PR target/71663 aarch64 Vector
initialization can be improved slightly
* Backport of [AArch32] Enable FP16 vector arithmetic operations
* Backport of [AArch32] Fix ARM bootstrap failure due to an odd warning
* Backport of [AArch32] Modify idiv costs for Cortex-A53
* Backport of [AArch64] Add combine pattern for storing lane zero of a vector
* Backport of [AArch64] Add HF vector modes to lane-to-lane INS pattern
* Backport of [AArch64] Add prefetch configuration to aarch64 backend
* Backport of [AArch64] Adjust costs so udiv is preferred over sdiv
when both are valid
* Backport of [AArch64] Allow CMP+SHIFT when comparing with zero
* Backport of [AArch64] Allow const0_rtx operand for atomic
compare-exchange patterns
* Backport of [AArch64] Emit tighter strong atomic compare-exchange
loop when comparing against zero
* Backport of [AArch64] Enable -fprefetch-loop-arrays at given
optimization level
* Backport of [AArch64] Fix -fstack-check with really big frames on aarch64
* Backport of [AArch64] Fix subreg bug in scalar copysign
* Backport of [AArch64] Peephole for SUBS
* Backport of [AArch64] Simplify call, call_value, sibcall,
sibcall_value patterns
* Backport of [AArch64] Update prefetch tuning parameters for qdf24xx.
* Backport of [AArch64] Use SUBS for parallel subtraction and
comparison with immediate
* Backport of [Misc] Add debug counter for loop array prefetching
* Backport of [Misc] Improve debug output of loop data prefetching
* Backport of [Cleanup] [AArch32] Complete legend for ARM register
allocation in arm.h
* Backport of [Cleanup] [AArch32] Fix comment for
cmse_nonsecure_call_clear_caller_saved
* Backport of [Cleanup] [AArch32] Fix typo in comment in arm_expand_prologue
* Backport of [Testsuite] [AArch32] Add MOVT testing for ARMv8-M Baseline
* Backport of [Testsuite] Add dg-require-stack-check
* Backport of [Testsuite] Fix stack-check-1.c
o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.4+svn250045 and
includes performance improvements and bug fixes backported from mainline GCC.
This snapshot contents will be part of the 2017.08 stable[2] quarterly release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.07/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 6.4+svn250045
* Linaro BZ #3040 -- CC1 and cc1plus cannot convert UTF-8: Regenerate
intl configure
* Backport of [AArch64] Fix -fstack-check with really big frames on aarch64
* Backport of [Testsuite] Add dg-require-stack-check
* Backport of [Testsuite] Fix stack-check-1.c
o Subscribe to the important Linaro mailing lists and join our IRC channels to
stay on top of Linaro development.
** Linaro Toolchain Development "mailing list":
http://lists.linaro.org/mailman/listinfo/linaro-toolchain
** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@
* Bug reports should be filed in bugzilla against GCC product:
http://bugs.linaro.org/enter_bug.cgi?product=GCC
* Interested in commercial support? inquire at "Linaro support":
mailto:***@linaro.org
[1]. Source package snapshots are defined when the compiler is only
put through unit-testing and full validation is not performed.
[2]. Stable source package releases are defined as releases where the
full Linaro Toolchain validation plan is executed.
snapshot of Linaro GCC 6 and 7 source packages.
o The GCC 7 series introduced an ABI change for ARM targets by fixing a bug
(present since GCC 5, see link below) that affects conformance to the procedure
call standard (AAPCS). The bug affects some C++ code where class objects are
passed by value to functions and could result in incorrect or inconsistent code
being generated. If the option -Wpsabi is enabled (on by default) the compiler
will emit a diagnostic note for code that might be affected by this ABI change.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77728
For an explanation of the changes please see the following website:
https://gcc.gnu.org/gcc-7/changes.html
o Linaro GCC 7 monthly snapshot[1] is based on FSF GCC 7.1+svn250046 and
includes performance improvements and bug fixes backported from mainline GCC.
The contents of this snapshot will be part of the 2017.08 stable[2] quarterly
release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/7.1-2017.07/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 7.1+svn250046
* Backport of [Bugfix] [AArch32] PR target/71778 ICE using
non-constant argument to Neon intrinsic that requires constant
arguments
* Backport of [Bugfix] [AArch64] PR target/71663 aarch64 Vector
initialization can be improved slightly
* Backport of [AArch32] Enable FP16 vector arithmetic operations
* Backport of [AArch32] Fix ARM bootstrap failure due to an odd warning
* Backport of [AArch32] Modify idiv costs for Cortex-A53
* Backport of [AArch64] Add combine pattern for storing lane zero of a vector
* Backport of [AArch64] Add HF vector modes to lane-to-lane INS pattern
* Backport of [AArch64] Add prefetch configuration to aarch64 backend
* Backport of [AArch64] Adjust costs so udiv is preferred over sdiv
when both are valid
* Backport of [AArch64] Allow CMP+SHIFT when comparing with zero
* Backport of [AArch64] Allow const0_rtx operand for atomic
compare-exchange patterns
* Backport of [AArch64] Emit tighter strong atomic compare-exchange
loop when comparing against zero
* Backport of [AArch64] Enable -fprefetch-loop-arrays at given
optimization level
* Backport of [AArch64] Fix -fstack-check with really big frames on aarch64
* Backport of [AArch64] Fix subreg bug in scalar copysign
* Backport of [AArch64] Peephole for SUBS
* Backport of [AArch64] Simplify call, call_value, sibcall,
sibcall_value patterns
* Backport of [AArch64] Update prefetch tuning parameters for qdf24xx.
* Backport of [AArch64] Use SUBS for parallel subtraction and
comparison with immediate
* Backport of [Misc] Add debug counter for loop array prefetching
* Backport of [Misc] Improve debug output of loop data prefetching
* Backport of [Cleanup] [AArch32] Complete legend for ARM register
allocation in arm.h
* Backport of [Cleanup] [AArch32] Fix comment for
cmse_nonsecure_call_clear_caller_saved
* Backport of [Cleanup] [AArch32] Fix typo in comment in arm_expand_prologue
* Backport of [Testsuite] [AArch32] Add MOVT testing for ARMv8-M Baseline
* Backport of [Testsuite] Add dg-require-stack-check
* Backport of [Testsuite] Fix stack-check-1.c
o Linaro GCC 6 monthly snapshot[1] is based on FSF GCC 6.4+svn250045 and
includes performance improvements and bug fixes backported from mainline GCC.
This snapshot contents will be part of the 2017.08 stable[2] quarterly release.
This snapshot tarball is available on:
http://snapshots.linaro.org/components/toolchain/gcc-linaro/6.4-2017.07/
Interesting changes in this GCC source package snapshot include:
* Updates to GCC 6.4+svn250045
* Linaro BZ #3040 -- CC1 and cc1plus cannot convert UTF-8: Regenerate
intl configure
* Backport of [AArch64] Fix -fstack-check with really big frames on aarch64
* Backport of [Testsuite] Add dg-require-stack-check
* Backport of [Testsuite] Fix stack-check-1.c
o Subscribe to the important Linaro mailing lists and join our IRC channels to
stay on top of Linaro development.
** Linaro Toolchain Development "mailing list":
http://lists.linaro.org/mailman/listinfo/linaro-toolchain
** Linaro Toolchain IRC channel on irc.freenode.net at @#linaro-tcwg@
* Bug reports should be filed in bugzilla against GCC product:
http://bugs.linaro.org/enter_bug.cgi?product=GCC
* Interested in commercial support? inquire at "Linaro support":
mailto:***@linaro.org
[1]. Source package snapshots are defined when the compiler is only
put through unit-testing and full validation is not performed.
[2]. Stable source package releases are defined as releases where the
full Linaro Toolchain validation plan is executed.