Backports to 7.x branch

Hi! I've backported following 61 trunk commits to 7.x branch (2 patches contain more than one commit), bootstrapped/regtested them on x86_64-linux and i686-linux and committed to 7.x branch. Jakub 2018-06-22 Jakub Jelinek Backported from mainline 2018-03-02 Jakub

[committed] Backports to 7.x

Hi! I've backported following 5 patches to 7.x. The PR81715 one, because it could be risky, is enabled only for -fsanitize=kernel-address which it has been reported for and where it causes major issues for the kernel during sanitization. Bootstrapped/regtested on x86_64-linux and i686-linux,

Backports to 7.x

Hi! I've bootstrapped/regtested (x86_64-linux and i686-linux) and committed following 4 backports to gcc-7-branch: Jakub 2017-09-15 Jakub Jelinek Backported from mainline 2017-09-12 Jakub Jelinek PR target/82112

Backports to 7.x

Hi! I've bootstrapped/regtested and committed to gcc-7-branch backports of 10 trunk commits. Jakub 2017-09-07 Jakub Jelinek Backported from mainline 2017-07-27 Jakub Jelinek PR c/45784 * c-omp.c

Backports to 7.x

Hi! I've bootstrapped/regtested and committed following 5 backports from mainline to 7.x. Jakub 2017-07-17 Jakub Jelinek Backported from mainline 2017-06-30 Jakub Jelinek PR target/81225 * config/i386/sse.md