diff options
Diffstat (limited to 'gcc/combine.c')
| -rw-r--r-- | gcc/combine.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gcc/combine.c b/gcc/combine.c index ae25ef3..ce6cfde 100644 --- a/gcc/combine.c +++ b/gcc/combine.c @@ -11230,7 +11230,8 @@ change_zero_ext (rtx pat) else if (GET_CODE (x) == ZERO_EXTEND && SCALAR_INT_MODE_P (mode) && REG_P (XEXP (x, 0)) - && HARD_REGISTER_P (XEXP (x, 0))) + && HARD_REGISTER_P (XEXP (x, 0)) + && can_change_dest_mode (XEXP (x, 0), 0, mode)) { size = GET_MODE_PRECISION (GET_MODE (XEXP (x, 0))); x = gen_rtx_REG (mode, REGNO (XEXP (x, 0))); |