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| author | Jakub Jelinek <jakub@redhat.com> | 2017-03-31 08:38:35 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-03-31 08:38:35 +0200 |
| commit | 7d790165457c7c6912ed98da4a64d9b020c6f483 (patch) | |
| tree | a2de62c5d9b9d71a0b6cd2125e29b6575d8fc3d4 /gcc/expmed.c | |
| parent | a7d551541989a53c964d5cc54359069bf4cf919a (diff) | |
| download | gcc-7d790165457c7c6912ed98da4a64d9b020c6f483.zip gcc-7d790165457c7c6912ed98da4a64d9b020c6f483.tar.gz gcc-7d790165457c7c6912ed98da4a64d9b020c6f483.tar.bz2 | |
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
Diffstat (limited to 'gcc/expmed.c')
| -rw-r--r-- | gcc/expmed.c | 10 |
1 files changed, 8 insertions, 2 deletions
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) { |