https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83914
--- Comment #6 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> --- Author: rsandifo Date: Fri Jan 19 11:57:34 2018 New Revision: 256884 URL: https://gcc.gnu.org/viewcvs?rev=256884&root=gcc&view=rev Log: Avoid ICE for nested inductions (PR 83914) This testcase ICEd because we converted the initial value of an induction to the vector element type even for nested inductions. This isn't necessary because the initial expression is vectorised normally, and it meant that init_expr was no longer the original statement operand by the time we called vect_get_vec_def_for_operand. Also, adding the conversion code here made the existing SLP conversion redundant. 2018-01-19 Richard Sandiford <richard.sandif...@linaro.org> gcc/ PR tree-optimization/83914 * tree-vect-loop.c (vectorizable_induction): Don't convert init_expr or apply the peeling adjustment for inductions that are nested within the vectorized loop. gcc/testsuite/ PR tree-optimization/83914 * gcc.dg/vect/pr83914.c: New test. Added: trunk/gcc/testsuite/gcc.dg/vect/pr83914.c Modified: trunk/gcc/ChangeLog trunk/gcc/testsuite/ChangeLog trunk/gcc/tree-vect-loop.c
