diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index 51614396da4..2feac6f45e1 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -6550,9 +6550,26 @@ arm_legitimize_reload_address (rtx *p, int opnum, int type, int ind_levels ATTRIBUTE_UNUSED) { + /* We must recognize output that we have already generated ourselves. */ + if (GET_CODE (*p) == PLUS + && GET_CODE (XEXP (*p, 0)) == PLUS + && GET_CODE (XEXP (XEXP (*p, 0), 0)) == REG + && GET_CODE (XEXP (XEXP (*p, 0), 1)) == CONST_INT + && GET_CODE (XEXP (*p, 1)) == CONST_INT) + { + push_reload (XEXP (*p, 0), NULL_RTX, &XEXP (*p, 0), NULL, + MODE_BASE_REG_CLASS (mode), GET_MODE (*p), + VOIDmode, 0, 0, opnum, (enum reload_type) type); + return true; + } + if (GET_CODE (*p) == PLUS && GET_CODE (XEXP (*p, 0)) == REG && ARM_REGNO_OK_FOR_BASE_P (REGNO (XEXP (*p, 0))) + /* If the base register is equivalent to a constant, let the generic + code handle it. Otherwise we will run into problems if a future + reload pass decides to rematerialize the constant. */ + && !reg_equiv_constant (ORIGINAL_REGNO (XEXP (*p, 0))) && GET_CODE (XEXP (*p, 1)) == CONST_INT) { HOST_WIDE_INT val = INTVAL (XEXP (*p, 1)); |