diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 02a92c1..2c92d24 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6043,10 +6043,11 @@ make_extraction (enum machine_mode mode, rtx inner, HOST_WIDE_INT pos, { if (tmode != inner_mode) { - if (in_dest) + /* We can't call gen_lowpart_for_combine in a DEST since we + always want a SUBREG (see below) and it would sometimes + return a new hard register. */ + if (pos || in_dest) { - /* We can't call gen_lowpart_for_combine here since we always want - a SUBREG and it would sometimes return a new hard register. */ HOST_WIDE_INT final_word = pos / BITS_PER_WORD; if (WORDS_BIG_ENDIAN |