diff options
Diffstat (limited to 'gcc/cse.c')
| -rw-r--r-- | gcc/cse.c | 18 |
1 files changed, 7 insertions, 11 deletions
@@ -4865,7 +4865,7 @@ cse_insn (rtx insn, rtx libcall_insn) else SET_SRC (sets[i].rtl) = new; - if (GET_CODE (dest) == ZERO_EXTRACT || GET_CODE (dest) == SIGN_EXTRACT) + if (GET_CODE (dest) == ZERO_EXTRACT) { validate_change (insn, &XEXP (dest, 1), canon_reg (XEXP (dest, 1), insn), 1); @@ -4873,9 +4873,9 @@ cse_insn (rtx insn, rtx libcall_insn) canon_reg (XEXP (dest, 2), insn), 1); } - while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == STRICT_LOW_PART + while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == ZERO_EXTRACT - || GET_CODE (dest) == SIGN_EXTRACT) + || GET_CODE (dest) == STRICT_LOW_PART) dest = XEXP (dest, 0); if (MEM_P (dest)) @@ -4972,8 +4972,7 @@ cse_insn (rtx insn, rtx libcall_insn) causes later instructions to be mis-optimized. */ /* If storing a constant in a bitfield, pre-truncate the constant so we will be able to record it later. */ - if (GET_CODE (SET_DEST (sets[i].rtl)) == ZERO_EXTRACT - || GET_CODE (SET_DEST (sets[i].rtl)) == SIGN_EXTRACT) + if (GET_CODE (SET_DEST (sets[i].rtl)) == ZERO_EXTRACT) { rtx width = XEXP (SET_DEST (sets[i].rtl), 1); @@ -5629,11 +5628,9 @@ cse_insn (rtx insn, rtx libcall_insn) /* Now deal with the destination. */ do_not_record = 0; - /* Look within any SIGN_EXTRACT or ZERO_EXTRACT - to the MEM or REG within it. */ - while (GET_CODE (dest) == SIGN_EXTRACT + /* Look within any ZERO_EXTRACT to the MEM or REG within it. */ + while (GET_CODE (dest) == SUBREG || GET_CODE (dest) == ZERO_EXTRACT - || GET_CODE (dest) == SUBREG || GET_CODE (dest) == STRICT_LOW_PART) dest = XEXP (dest, 0); @@ -5661,8 +5658,7 @@ cse_insn (rtx insn, rtx libcall_insn) because the value in it after the store may not equal what was stored, due to truncation. */ - if (GET_CODE (SET_DEST (sets[i].rtl)) == ZERO_EXTRACT - || GET_CODE (SET_DEST (sets[i].rtl)) == SIGN_EXTRACT) + if (GET_CODE (SET_DEST (sets[i].rtl)) == ZERO_EXTRACT) { rtx width = XEXP (SET_DEST (sets[i].rtl), 1); |