diff options
| -rw-r--r-- | gcc/testsuite/gcc.target/gcn/pr113163.c | 30 | ||||
| -rw-r--r-- | gcc/tree-vect-loop-manip.cc | 19 |
2 files changed, 49 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.target/gcn/pr113163.c b/gcc/testsuite/gcc.target/gcn/pr113163.c new file mode 100644 index 0000000..99b0fdb --- /dev/null +++ b/gcc/testsuite/gcc.target/gcn/pr113163.c @@ -0,0 +1,30 @@ +/* { dg-do compile } */ +/* { dg-additional-options "-O2 -ftree-vectorize" } */ + +struct _reent { union { struct { char _l64a_buf[8]; } _reent; } _new; }; +static const char R64_ARRAY[] = "./0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; +char * +_l64a_r (struct _reent *rptr, + long value) +{ + char *ptr; + char *result; + int i, index; + unsigned long tmp = (unsigned long)value & 0xffffffff; + result = + (( + rptr + )->_new._reent._l64a_buf) + ; + ptr = result; + for (i = 0; i < 6; ++i) + { + if (tmp == 0) + { + *ptr = '\0'; + break; + } + *ptr++ = R64_ARRAY[index]; + tmp >>= 6; + } +} diff --git a/gcc/tree-vect-loop-manip.cc b/gcc/tree-vect-loop-manip.cc index 927f76a..2313d26 100644 --- a/gcc/tree-vect-loop-manip.cc +++ b/gcc/tree-vect-loop-manip.cc @@ -2063,6 +2063,25 @@ vect_can_peel_nonlinear_iv_p (loop_vec_info loop_vinfo, return false; } + /* We can't support partial vectors and early breaks with an induction + type other than add or neg since we require the epilog and can't + perform the peeling. The below condition mirrors that of + vect_gen_vector_loop_niters where niters_vector_mult_vf_var then sets + step_vector to VF rather than 1. This is what creates the nonlinear + IV. PR113163. */ + if (LOOP_VINFO_EARLY_BREAKS (loop_vinfo) + && LOOP_VINFO_VECT_FACTOR (loop_vinfo).is_constant () + && LOOP_VINFO_USING_PARTIAL_VECTORS_P (loop_vinfo) + && induction_type != vect_step_op_neg) + { + if (dump_enabled_p ()) + dump_printf_loc (MSG_MISSED_OPTIMIZATION, vect_location, + "Peeling for epilogue is not supported" + " for nonlinear induction except neg" + " when VF is known and early breaks.\n"); + return false; + } + return true; } |