From 7d790165457c7c6912ed98da4a64d9b020c6f483 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Fri, 31 Mar 2017 08:38:35 +0200 Subject: re PR middle-end/80173 (ICE in store_bit_field_1, at expmed.c:787) PR middle-end/80173 * expmed.c (store_bit_field_1): Don't attempt to create a word subreg out of hard registers wider than word if they have HARD_REGNO_NREGS of 1 for their mode. * gcc.target/i386/pr80173.c: New test. From-SVN: r246608 --- gcc/expmed.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'gcc/expmed.c') diff --git a/gcc/expmed.c b/gcc/expmed.c index bcc5922..c0260c5 100644 --- a/gcc/expmed.c +++ b/gcc/expmed.c @@ -965,8 +965,14 @@ store_bit_field_1 (rtx str_rtx, unsigned HOST_WIDE_INT bitsize, } /* If OP0 is a multi-word register, narrow it to the affected word. - If the region spans two words, defer to store_split_bit_field. */ - if (!MEM_P (op0) && GET_MODE_SIZE (GET_MODE (op0)) > UNITS_PER_WORD) + If the region spans two words, defer to store_split_bit_field. + Don't do this if op0 is a single hard register wider than word + such as a float or vector register. */ + if (!MEM_P (op0) + && GET_MODE_SIZE (GET_MODE (op0)) > UNITS_PER_WORD + && (!REG_P (op0) + || !HARD_REGISTER_P (op0) + || HARD_REGNO_NREGS (REGNO (op0), GET_MODE (op0)) != 1)) { if (bitnum % BITS_PER_WORD + bitsize > BITS_PER_WORD) { -- cgit v1.1