diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index fa6947a..19cdb2d 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -7707,8 +7707,9 @@ make_extraction (machine_mode mode, rtx inner, HOST_WIDE_INT pos, are the same as for a register operation, since at present we don't have named patterns for aligned memory structures. */ struct extraction_insn insn; - if (get_best_reg_extraction_insn (&insn, pattern, - GET_MODE_BITSIZE (inner_mode), mode)) + unsigned int inner_size; + if (GET_MODE_BITSIZE (inner_mode).is_constant (&inner_size) + && get_best_reg_extraction_insn (&insn, pattern, inner_size, mode)) { wanted_inner_reg_mode = insn.struct_mode.require (); pos_mode = insn.pos_mode; @@ -7744,9 +7745,11 @@ make_extraction (machine_mode mode, rtx inner, HOST_WIDE_INT pos, If it's a MEM we need to recompute POS relative to that. However, if we're extracting from (or inserting into) a register, we want to recompute POS relative to wanted_inner_mode. */ - int width = (MEM_P (inner) - ? GET_MODE_BITSIZE (is_mode) - : GET_MODE_BITSIZE (wanted_inner_mode)); + int width; + if (!MEM_P (inner)) + width = GET_MODE_BITSIZE (wanted_inner_mode); + else if (!GET_MODE_BITSIZE (is_mode).is_constant (&width)) + return NULL_RTX; if (pos_rtx == 0) pos = width - len - pos; |