diff options
Diffstat (limited to 'gcc-4.9/gcc/config/avr/avr.c')
| -rw-r--r-- | gcc-4.9/gcc/config/avr/avr.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/gcc-4.9/gcc/config/avr/avr.c b/gcc-4.9/gcc/config/avr/avr.c index 99644ec92..fa979df46 100644 --- a/gcc-4.9/gcc/config/avr/avr.c +++ b/gcc-4.9/gcc/config/avr/avr.c @@ -2353,6 +2353,12 @@ avr_notice_update_cc (rtx body ATTRIBUTE_UNUSED, rtx insn) } break; + case CC_SET_VZN: + /* Insn like INC, DEC, NEG that set Z,N,V. We currently don't make use + of this combination, cf. also PR61055. */ + CC_STATUS_INIT; + break; + case CC_SET_CZN: /* Insn sets the Z,N,C flags of CC to recog_operand[0]. The V flag may or may not be known but that's ok because @@ -3987,7 +3993,7 @@ avr_out_store_psi (rtx insn, rtx *op, int *plen) "std Y+61,%A1" CR_TAB "std Y+62,%B1" CR_TAB "std Y+63,%C1" CR_TAB - "sbiw r28,%o0-60", op, plen, -5); + "sbiw r28,%o0-61", op, plen, -5); return avr_asm_len ("subi r28,lo8(-%o0)" CR_TAB "sbci r29,hi8(-%o0)" CR_TAB @@ -6284,7 +6290,7 @@ avr_out_plus_1 (rtx *xop, int *plen, enum rtx_code code, int *pcc, if (REG_P (xop[2])) { - *pcc = MINUS == code ? (int) CC_SET_CZN : (int) CC_SET_N; + *pcc = MINUS == code ? (int) CC_SET_CZN : (int) CC_CLOBBER; for (i = 0; i < n_bytes; i++) { @@ -6393,7 +6399,7 @@ avr_out_plus_1 (rtx *xop, int *plen, enum rtx_code code, int *pcc, op, plen, 1); if (n_bytes == 2 && PLUS == code) - *pcc = CC_SET_ZN; + *pcc = CC_SET_CZN; } i++; @@ -6416,6 +6422,7 @@ avr_out_plus_1 (rtx *xop, int *plen, enum rtx_code code, int *pcc, { avr_asm_len ((code == PLUS) ^ (val8 == 1) ? "dec %0" : "inc %0", op, plen, 1); + *pcc = CC_CLOBBER; break; } |