From a100ece7a4b9734ef5bbcf17890fd2bd11179895 Mon Sep 17 00:00:00 2001 From: jsm28 Date: Thu, 21 Dec 2006 20:58:57 +0000 Subject: [PATCH] * rtlanal.c (subreg_get_info): Do not make register size computations for mode sizes not divisible by the number of registers. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120119 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 6 ++++++ gcc/rtlanal.c | 6 +++--- 2 files changed, 9 insertions(+), 3 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e450bd7ba1db..a6829c9d43b6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2006-12-21 Joseph Myers + + * rtlanal.c (subreg_get_info): Do not make register size + computations for mode sizes not divisible by the number of + registers. + 2006-12-21 Daniel Berlin * tree-ssa-structalias.c (build_constraint_graph): Insert complex diff --git a/gcc/rtlanal.c b/gcc/rtlanal.c index c45a020709f5..bc2da3c7e2a0 100644 --- a/gcc/rtlanal.c +++ b/gcc/rtlanal.c @@ -3028,12 +3028,12 @@ subreg_get_info (unsigned int xregno, enum machine_mode xmode, /* If registers store different numbers of bits in the different modes, we cannot generally form this subreg. */ if (!HARD_REGNO_NREGS_HAS_PADDING (xregno, xmode) - && !HARD_REGNO_NREGS_HAS_PADDING (xregno, ymode)) + && !HARD_REGNO_NREGS_HAS_PADDING (xregno, ymode) + && (GET_MODE_SIZE (xmode) % nregs_xmode) == 0 + && (GET_MODE_SIZE (ymode) % nregs_ymode) == 0) { regsize_xmode = GET_MODE_SIZE (xmode) / nregs_xmode; - gcc_assert (regsize_xmode * nregs_xmode == GET_MODE_SIZE (xmode)); regsize_ymode = GET_MODE_SIZE (ymode) / nregs_ymode; - gcc_assert (regsize_ymode * nregs_ymode == GET_MODE_SIZE (ymode)); if (!rknown && regsize_xmode > regsize_ymode && nregs_ymode > 1) { info->representable_p = false; -- 2.47.3