On 01/04/2018 03:02 AM, Richard Sandiford wrote: > tree-ssa-forwprop.c was asserting that a VEC_PERM_EXPR fold on three > VECTOR_CSTs would always succeed, but it's possible for it to fail > with variable-length vectors. > > Tested on aarch64-linux-gnu, x86_64-linux-gnu and powerpc64le-linux-gnu. > Also tested by comparing the before and after assembly output for at > least one target per CPU directory. OK to install? > > Richard > > > 2018-01-04 Richard Sandiford <richard.sandif...@linaro.org> > > gcc/ > * tree-ssa-forwprop.c (is_combined_permutation_identity): Allow > the VEC_PERM_EXPR fold to fail. OK. Ideally we'd have a test which failed here.
jeff
