Backports to gcc-9-branch

Hi! I've backorted following 10 patches from trunk to 9 branch, bootstrapped/regtested them on x86_64-linux and i686-linux and committed. Jakub 2019-11-08 Jakub Jelinek Backported from mainline 2019-10-21 Jakub Jelinek PR c++/92015 * constexpr.c

[committed] Backports to gcc-9-branch

Hi! I've backported following 18 patches (20 trunk commits in total) from trunk to gcc-9-branch, bootstrapped/regtested on x86_64-linux and i686-linux and committed to gcc-9-branch. Jakub 2019-10-21 Jakub Jelinek Backported from mainline 2019-08-02 Jakub Jelinek

Backports to gcc-9-branch

Hi! I've backported following 5 patches from trunk to 9.2, bootstrapped/regtested on x86_64-linux and i686-linux, committed to gcc-9-branch. Jakub 2019-08-01 Jakub Jelinek Backported from mainline 2019-07-17 Jakub Jelinek PR tree-optimization/91157

Backports to gcc-9-branch

Hi! I've backported following 4 patches from trunk to 9 branch, bootstrapped/regtested on x86_64-linux and i686-linux, committed. Jakub 2019-06-05 Jakub Jelinek Backported from mainline 2019-05-24 Jakub Jelinek PR libgomp/90585 *

Backports to gcc-9-branch

Hi! I've backported following 11 patches from trunk to gcc-9-branch, bootstrapped/regtested on x86_64-linux and i686-linux, committed. Jakub 2019-05-17 Jakub Jelinek Backported from mainline 2019-04-26 Jakub Jelinek PR debug/90197 * c-tree.h