diff options
Diffstat (limited to 'gcc/emit-rtl.c')
| -rw-r--r-- | gcc/emit-rtl.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c index 06721c6c467..477c5813084 100644 --- a/gcc/emit-rtl.c +++ b/gcc/emit-rtl.c @@ -812,13 +812,12 @@ gen_reg_rtx (enum machine_mode mode) return val; } -/* Generate a register with same attributes as REG, but offsetted by OFFSET. +/* Update NEW with same attributes as REG, but offsetted by OFFSET. Do the big endian correction if needed. */ -rtx -gen_rtx_REG_offset (rtx reg, enum machine_mode mode, unsigned int regno, int offset) +static void +update_reg_offset (rtx new, rtx reg, int offset) { - rtx new = gen_rtx_REG (mode, regno); tree decl; HOST_WIDE_INT var_size; @@ -860,7 +859,7 @@ gen_rtx_REG_offset (rtx reg, enum machine_mode mode, unsigned int regno, int off if ((BYTES_BIG_ENDIAN || WORDS_BIG_ENDIAN) && decl != NULL && offset > 0 - && GET_MODE_SIZE (GET_MODE (reg)) > GET_MODE_SIZE (mode) + && GET_MODE_SIZE (GET_MODE (reg)) > GET_MODE_SIZE (GET_MODE (new)) && ((var_size = int_size_in_bytes (TREE_TYPE (decl))) > 0 && var_size < GET_MODE_SIZE (GET_MODE (reg)))) { @@ -904,6 +903,27 @@ gen_rtx_REG_offset (rtx reg, enum machine_mode mode, unsigned int regno, int off REG_ATTRS (new) = get_reg_attrs (REG_EXPR (reg), REG_OFFSET (reg) + offset); +} + +/* Generate a register with same attributes as REG, but offsetted by OFFSET. */ + +rtx +gen_rtx_REG_offset (rtx reg, enum machine_mode mode, + unsigned int regno, int offset) +{ + rtx new = gen_rtx_REG (mode, regno); + update_reg_offset (new, reg, offset); + return new; +} + +/* Generate a new pseudo register with same attributes as REG, but + offsetted by OFFSET. */ + +rtx +gen_reg_rtx_offset (rtx reg, enum machine_mode mode, int offset) +{ + rtx new = gen_reg_rtx (mode); + update_reg_offset (new, reg, offset); return new; } @@ -1153,8 +1173,9 @@ gen_lowpart_common (enum machine_mode mode, rtx x) return gen_rtx_fmt_e (GET_CODE (x), mode, XEXP (x, 0)); } else if (GET_CODE (x) == SUBREG || REG_P (x) - || GET_CODE (x) == CONCAT || GET_CODE (x) == CONST_VECTOR - || GET_CODE (x) == CONST_DOUBLE || GET_CODE (x) == CONST_INT) + || GET_CODE (x) == CONCAT || GET_CODE (x) == CONCATN + || GET_CODE (x) == CONST_VECTOR || GET_CODE (x) == CONST_DOUBLE + || GET_CODE (x) == CONST_INT) return simplify_gen_subreg (mode, x, innermode, offset); /* Otherwise, we can't do this. */ |