[Patch GCC 5/Vect] Partial backport of r228751 (pr68238)

Hi, As requested in the PR, this patch is a partial backport of r228751. I can't claim any responsibility for it, but I did take it through the paces on an aarch64-none-linux-gnu and x86_64-none-linux-gnu bootstrap/ test run and found no issues. Applied as r230092 on gcc-5-branch (pre-approved

Re: [Patch GCC 5/Vect] Partial backport of r228751 (pr68238)

On Tue, Nov 10, 2015 at 10:11:30AM +, James Greenhalgh wrote: > > Hi, > > As requested in the PR, this patch is a partial backport of r228751. > > I can't claim any responsibility for it, but I did take it through the > paces on an aarch64-none-linux-gnu and x86_64-none-linux-gnu bootstrap/