diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 14 |
1 files changed, 10 insertions, 4 deletions
@@ -4552,14 +4552,17 @@ cse_insn (rtx_insn *insn) && CONST_INT_P (XEXP (SET_DEST (sets[0].rtl), 2))) { rtx dest_reg = XEXP (SET_DEST (sets[0].rtl), 0); + /* This is the mode of XEXP (tem, 0) as well. */ + scalar_int_mode dest_mode + = as_a <scalar_int_mode> (GET_MODE (dest_reg)); rtx width = XEXP (SET_DEST (sets[0].rtl), 1); rtx pos = XEXP (SET_DEST (sets[0].rtl), 2); HOST_WIDE_INT val = INTVAL (XEXP (tem, 0)); HOST_WIDE_INT mask; unsigned int shift; if (BITS_BIG_ENDIAN) - shift = GET_MODE_PRECISION (GET_MODE (dest_reg)) - - INTVAL (pos) - INTVAL (width); + shift = (GET_MODE_PRECISION (dest_mode) + - INTVAL (pos) - INTVAL (width)); else shift = INTVAL (pos); if (INTVAL (width) == HOST_BITS_PER_WIDE_INT) @@ -5231,8 +5234,11 @@ cse_insn (rtx_insn *insn) HOST_WIDE_INT val = INTVAL (dest_cst); HOST_WIDE_INT mask; unsigned int shift; + /* This is the mode of DEST_CST as well. */ + scalar_int_mode dest_mode + = as_a <scalar_int_mode> (GET_MODE (dest_reg)); if (BITS_BIG_ENDIAN) - shift = GET_MODE_PRECISION (GET_MODE (dest_reg)) + shift = GET_MODE_PRECISION (dest_mode) - INTVAL (pos) - INTVAL (width); else shift = INTVAL (pos); @@ -5242,7 +5248,7 @@ cse_insn (rtx_insn *insn) mask = (HOST_WIDE_INT_1 << INTVAL (width)) - 1; val &= ~(mask << shift); val |= (INTVAL (trial) & mask) << shift; - val = trunc_int_for_mode (val, GET_MODE (dest_reg)); + val = trunc_int_for_mode (val, dest_mode); validate_unshare_change (insn, &SET_DEST (sets[i].rtl), dest_reg, 1); validate_unshare_change (insn, &SET_SRC (sets[i].rtl), |