buildroot/toolchain
Romain Naour 7cbc19471b toolchain/toolchain-wrapper: disable -ftree-loop-distribute-patterns when building for microblaze with gcc >= 10
GCC 10 now enable by default -ftree-loop-distribute-patterns at -O2 or -Os
optimization level instead of -O3, see commit [1].

Due to this change, the microblaze kernel doesn't boot (as reported by
toolchain-builder project).

The gcc docs between version 9 and 10 has been updated accordingly [2] [3]
but there no word about this change in the gcc 10 changelog [4].

Fixes microblazebe:
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359536 (glibc)
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359538 (musl)
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359540 (uClubc-ng)

Fixes microblazeel:
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359542 (glibc)
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359544 (musl)
https://gitlab.com/bootlin/toolchains-builder/-/jobs/729359546 (uClibc-ng)

This has been reported upsteam [5].

[1] https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff;h=5879ab5fafedc8f6f9bfe95a4cf8501b0df90edd
[2] https://gcc.gnu.org/onlinedocs/gcc-9.3.0/gcc/Optimize-Options.html#Optimize-Options
[3] https://gcc.gnu.org/onlinedocs/gcc-10.2.0/gcc/Optimize-Options.html#Optimize-Options
[4] https://gcc.gnu.org/gcc-10/changes.html
[5] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97208

Signed-off-by: Romain Naour <romain.naour@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
2020-10-25 10:48:58 +01:00
..
toolchain toolchain/toolchain: set TOOLCHAIN_INSTALL_STAGING only once 2019-10-27 14:56:52 +01:00
toolchain-buildroot toolchain/toolchain-buildroot: allow uclibc-ng for riscv 2020-10-06 23:32:49 +02:00
toolchain-external toolchain/toolchain-external/toolchain-external-bootlin: regenerate with new PowerPC toolchains 2020-10-15 00:00:42 +02:00
Config.in {linux, linux-headers}: add version 5.9 2020-10-12 22:36:28 +02:00
helpers.mk toolchain: adjust version check to allow for single numbers 2020-06-14 22:11:06 +02:00
toolchain-wrapper.c toolchain/toolchain-wrapper: let recent GCC handle SOURCE_DATE_EPOCH 2020-06-27 17:19:53 +02:00
toolchain-wrapper.mk toolchain/toolchain-wrapper: disable -ftree-loop-distribute-patterns when building for microblaze with gcc >= 10 2020-10-25 10:48:58 +01:00
toolchain.mk toolchain: move glibc nsswitch.conf handling to a post-target hook 2018-10-21 01:50:35 +02:00