From abd13f7ec5f847d07554016d1f56158e8d747a09 Mon Sep 17 00:00:00 2001 From: Alan Hayward Date: Thu, 13 Nov 2014 11:10:36 +0000 Subject: [PATCH] BE fix load stores. Common code. --- gcc/rtlanal.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index c9bf69c..a3f7b78 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -3561,6 +3561,19 @@ subreg_get_info (unsigned int xregno, machine_mode xmode, info->offset = offset / regsize_xmode; return; } + /* Quick exit for the simple and common case of extracting whole + subregisters from a multiregister value. */ + if (!rknown + && WORDS_BIG_ENDIAN == REG_WORDS_BIG_ENDIAN + && regsize_xmode == regsize_ymode + && (offset % regsize_ymode) == 0) + { + info->representable_p = true; + info->nregs = nregs_ymode; + info->offset = offset / regsize_ymode; + gcc_assert (info->offset + info->nregs <= nregs_xmode); + return; + } } /* Lowpart subregs are otherwise valid. */ -- 1.9.1