From: Jim Wilson Date: Sun, 19 May 1996 00:16:38 +0000 (-0700) Subject: (copy_loop_body): When update split DEST_ADDR giv, X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=7085bad383da40cb4e8c22076991277d088bc882;p=gcc.git (copy_loop_body): When update split DEST_ADDR giv, check to make sure it was split. (find_splittable_givs): Fix reversed test of verify_addresses result. From-SVN: r12034 --- diff --git a/gcc/unroll.c b/gcc/unroll.c index e5b1e0ecb9d..377f046a822 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -1606,10 +1606,15 @@ copy_loop_body (copy_start, copy_end, map, exit_label, last_iteration, for (tv = bl->giv; tv; tv = tv->next_iv) if (tv->giv_type == DEST_ADDR && tv->same == v) { - int this_giv_inc = INTVAL (giv_inc); + int this_giv_inc; + + /* If this DEST_ADDR giv was not split, then ignore it. */ + if (*tv->location != tv->dest_reg) + continue; /* Scale this_giv_inc if the multiplicative factors of the two givs are different. */ + this_giv_inc = INTVAL (giv_inc); if (tv->mult_val != v->mult_val) this_giv_inc = (this_giv_inc / INTVAL (v->mult_val) * INTVAL (tv->mult_val)); @@ -2780,7 +2785,7 @@ find_splittable_givs (bl, unroll_type, loop_start, loop_end, increment, Try to validate both the first and the last address resulting from loop unrolling, if one fails, then can't do const elim here. */ - if (! verify_addresses (v, giv_inc, unroll_number)) + if (verify_addresses (v, giv_inc, unroll_number)) { /* Save the negative of the eliminated const, so that we can calculate the dest_reg's increment