From 3bb24246626de6168ef3cefbd53180d1234babc3 Mon Sep 17 00:00:00 2001 From: Jim Wilson Date: Mon, 23 Jun 1997 19:47:33 -0700 Subject: [PATCH] (find_splittable_givs): Set splittable_regs_updates to biv_count for reduced givs. From-SVN: r14296 --- gcc/unroll.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/gcc/unroll.c b/gcc/unroll.c index 74e54bd9499..3f5c548994f 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -2971,12 +2971,19 @@ find_splittable_givs (bl, unroll_type, loop_start, loop_end, increment, #endif } - /* Givs are only updated once by definition. Mark it so if this is + /* Unreduced givs are only updated once by definition. Reduced givs + are updated as many times as their biv is. Mark it so if this is a splittable register. Don't need to do anything for address givs where this may not be a register. */ if (GET_CODE (v->new_reg) == REG) - splittable_regs_updates[REGNO (v->new_reg)] = 1; + { + int count = 1; + if (! v->ignore) + count = reg_biv_class[REGNO (v->src_reg)]->biv_count; + + splittable_regs_updates[REGNO (v->new_reg)] = count; + } result++;