From 8ed805d20c65c2b262321b16c2825d9df5836c97 Mon Sep 17 00:00:00 2001 From: Graham Stott Date: Wed, 27 Feb 2002 15:01:10 +0000 Subject: [PATCH] unroll.c (loop_iterations): Return 0 if the add_val for a BIV is REG. * unroll.c (loop_iterations): Return 0 if the add_val for a BIV is REG. From-SVN: r50100 --- gcc/ChangeLog | 3 +++ gcc/unroll.c | 13 ++++++++++++- 2 files changed, 15 insertions(+), 1 deletion(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 025b4e86304..062716db492 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,8 @@ 2002-02-27 Graham Stott + * unroll.c (loop_iterations): Return 0 if the add_val for + a BIV is REG. + * final.c (output_operand_lossage): Constify PFX_STR. * df.c (df_insn_refs_record): Use XEXP (x, 0) for USE. diff --git a/gcc/unroll.c b/gcc/unroll.c index 9a0cfcf6871..2b941470ecd 100644 --- a/gcc/unroll.c +++ b/gcc/unroll.c @@ -3744,7 +3744,18 @@ loop_iterations (loop) for (biv_inc = bl->biv; biv_inc; biv_inc = biv_inc->next_iv) { if (loop_insn_first_p (v->insn, biv_inc->insn)) - offset -= INTVAL (biv_inc->add_val); + { + if (REG_P (biv_inc->add_val)) + { + if (loop_dump_stream) + fprintf (loop_dump_stream, + "Loop iterations: Basic induction var add_val is REG %d.\n", + REGNO (biv_inc->add_val)); + return 0; + } + + offset -= INTVAL (biv_inc->add_val); + } } } if (loop_dump_stream) -- 2.30.2