diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index 1d0e8beeb2c..cd864ccb0d4 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -6736,7 +6736,7 @@ simplify_set (rtx x) + (UNITS_PER_WORD - 1)) / UNITS_PER_WORD)) && (WORD_REGISTER_OPERATIONS || (GET_MODE_SIZE (GET_MODE (src)) - < GET_MODE_SIZE (GET_MODE (SUBREG_REG (src))))) + <= GET_MODE_SIZE (GET_MODE (SUBREG_REG (src))))) #ifdef CANNOT_CHANGE_MODE_CLASS && ! (REG_P (dest) && REGNO (dest) < FIRST_PSEUDO_REGISTER && REG_CANNOT_CHANGE_MODE_P (REGNO (dest), @@ -8037,6 +8037,7 @@ make_compound_operation (rtx x, enum rtx_code in_code) && ! (GET_CODE (lhs) == SUBREG && (OBJECT_P (SUBREG_REG (lhs)))) && CONST_INT_P (rhs) + && INTVAL (rhs) >= 0 && INTVAL (rhs) < HOST_BITS_PER_WIDE_INT && INTVAL (rhs) < mode_width && (new_rtx = extract_left_shift (lhs, INTVAL (rhs))) != 0) @@ -11096,6 +11097,7 @@ change_zero_ext (rtx *src) XEXP (x, 0), GEN_INT (start)); } else if (GET_CODE (x) == ZERO_EXTEND + && SCALAR_INT_MODE_P (mode) && GET_CODE (XEXP (x, 0)) == SUBREG && GET_MODE (SUBREG_REG (XEXP (x, 0))) == mode && subreg_lowpart_p (XEXP (x, 0))) @@ -11106,11 +11108,8 @@ change_zero_ext (rtx *src) else continue; - unsigned HOST_WIDE_INT mask = 1; - mask <<= size; - mask--; - - x = gen_rtx_AND (mode, x, GEN_INT (mask)); + wide_int mask = wi::mask (size, false, GET_MODE_PRECISION (mode)); + x = gen_rtx_AND (mode, x, immed_wide_int_const (mask, mode)); SUBST (**iter, x); changed = true; |