Merge in trunk.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/wide-int@206028 138bc75d-0d04-0410-961f-82ee72b054a4

diff --cc gcc/Makefile.in
Simple merge

diff --cc gcc/config/i386/i386.c
Simple merge

diff --cc gcc/emit-rtl.c
Simple merge

diff --cc gcc/gimple.c
Simple merge

diff --cc gcc/ipa-devirt.c
Simple merge

diff --cc gcc/ipa-prop.c
Simple merge

diff --cc gcc/omp-low.c
Simple merge

diff --cc gcc/recog.c
Simple merge

diff --cc gcc/tree-vrp.c
Simple merge

diff --cc gcc/var-tracking.c
Simple merge