From f9e67232ef84bdb81faf1f70359c5d6f2ffcc2e9 Mon Sep 17 00:00:00 2001 From: Richard Stallman Date: Sat, 31 Oct 1992 21:16:47 +0000 Subject: [PATCH] (simplify_shift_const): For a subreg, require subreg_lowpart_p and not paradoxical. From-SVN: r2664 --- gcc/combine.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/gcc/combine.c b/gcc/combine.c index 51835084b9a..3f90edb926d 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6792,7 +6792,9 @@ simplify_shift_const (x, code, result_mode, varop, count) /* If VAROP is a SUBREG, strip it as long as the inner operand has the same number of words as what we've seen so far. Then store the widest mode in MODE. */ - if (SUBREG_WORD (varop) == 0 + if (subreg_lowpart_p (varop) + && (GET_MODE_SIZE (GET_MODE (SUBREG_REG (varop))) + > GET_MODE_SIZE (GET_MODE (varop))) && (((GET_MODE_SIZE (GET_MODE (SUBREG_REG (varop))) + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD) == mode_words)) -- 2.30.2