diff options
Diffstat (limited to 'gcc/unroll.c')
| -rw-r--r-- | gcc/unroll.c | 29 |
1 files changed, 1 insertions, 28 deletions
diff --git a/gcc/unroll.c b/gcc/unroll.c index 761abce..23932fb 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -1117,11 +1117,7 @@ unroll_loop (loop_end, insn_count, loop_start, end_insert_before, /* At this point, we are guaranteed to unroll the loop. */ /* Keep track of the unroll factor for the loop. */ - if (unroll_type == UNROLL_COMPLETELY) - loop_info->unroll_number = -1; - else - loop_info->unroll_number = unroll_number; - + loop_info->unroll_number = unroll_number; /* For each biv and giv, determine whether it can be safely split into a different variable for each unrolled copy of the loop body. @@ -3500,7 +3496,6 @@ loop_find_equiv_value (loop_start, reg) return ret; } - /* Return a simplified rtx for the expression OP - REG. REG must appear in OP, and OP must be a register or the sum of a register @@ -3566,7 +3561,6 @@ find_common_reg_term (op0, op1) return NULL_RTX; } - /* Calculate the number of loop iterations. Returns the exact number of loop iterations if it can be calculated, otherwise returns zero. */ @@ -3584,7 +3578,6 @@ loop_iterations (loop_start, loop_end, loop_info) int increment_dir; int unsigned_p, compare_dir, final_larger; rtx last_loop_insn; - rtx vtop; rtx reg_term; loop_info->n_iterations = 0; @@ -3596,7 +3589,6 @@ loop_iterations (loop_start, loop_end, loop_info) loop_info->increment = 0; loop_info->iteration_var = 0; loop_info->unroll_number = 1; - loop_info->vtop = 0; /* We used to use prev_nonnote_insn here, but that fails because it might accidentally get the branch for a contained loop if the branch for this @@ -3645,25 +3637,6 @@ loop_iterations (loop_start, loop_end, loop_info) iteration_var = XEXP (comparison, 0); comparison_value = XEXP (comparison, 1); - /* Check if there is a NOTE_INSN_LOOP_VTOP note. If there is, - that means that this is a for or while style loop, with - a loop exit test at the start. Thus, we can assume that - the loop condition was true when the loop was entered. - - We start at the end and search backwards for the previous - NOTE. If there is no NOTE_INSN_LOOP_VTOP for this loop, - the search will stop at the NOTE_INSN_LOOP_CONT. */ - vtop = loop_end; - do - vtop = PREV_INSN (vtop); - while (GET_CODE (vtop) != NOTE - || NOTE_LINE_NUMBER (vtop) > 0 - || NOTE_LINE_NUMBER (vtop) == NOTE_REPEATED_LINE_NUMBER - || NOTE_LINE_NUMBER (vtop) == NOTE_INSN_DELETED); - if (NOTE_LINE_NUMBER (vtop) != NOTE_INSN_LOOP_VTOP) - vtop = NULL_RTX; - loop_info->vtop = vtop; - if (GET_CODE (iteration_var) != REG) { if (loop_dump_stream) |