diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index a249248..91e32c8 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7830,6 +7830,10 @@ make_extraction (machine_mode mode, rtx inner, HOST_WIDE_INT pos, && partial_subreg_p (extraction_mode, mode)) extraction_mode = mode; + /* Punt if len is too large for extraction_mode. */ + if (maybe_gt (len, GET_MODE_PRECISION (extraction_mode))) + return NULL_RTX; + if (!MEM_P (inner)) wanted_inner_mode = wanted_inner_reg_mode; else |