diff options
Diffstat (limited to 'gcc/config/cris/cris.c')
| -rw-r--r-- | gcc/config/cris/cris.c | 22 |
1 files changed, 16 insertions, 6 deletions
diff --git a/gcc/config/cris/cris.c b/gcc/config/cris/cris.c index 2112670de6c..bc634ddbf3e 100644 --- a/gcc/config/cris/cris.c +++ b/gcc/config/cris/cris.c @@ -1431,13 +1431,18 @@ cris_normal_notice_update_cc (rtx exp, rtx insn) if (SET_DEST (exp) == cc0_rtx) { CC_STATUS_INIT; - cc_status.value1 = SET_SRC (exp); - /* Handle flags for the special btstq on one bit. */ - if (GET_CODE (SET_SRC (exp)) == ZERO_EXTRACT - && XEXP (SET_SRC (exp), 1) == const1_rtx) + if (GET_CODE (SET_SRC (exp)) == COMPARE + && XEXP (SET_SRC (exp), 1) == const0_rtx) + cc_status.value1 = XEXP (SET_SRC (exp), 0); + else + cc_status.value1 = SET_SRC (exp); + + /* Handle flags for the special btstq on one bit. */ + if (GET_CODE (cc_status.value1) == ZERO_EXTRACT + && XEXP (cc_status.value1, 1) == const1_rtx) { - if (CONST_INT_P (XEXP (SET_SRC (exp), 0))) + if (CONST_INT_P (XEXP (cc_status.value1, 0))) /* Using cmpq. */ cc_status.flags = CC_INVERTED; else @@ -1445,7 +1450,7 @@ cris_normal_notice_update_cc (rtx exp, rtx insn) cc_status.flags = CC_Z_IN_NOT_N; } - if (GET_CODE (SET_SRC (exp)) == COMPARE) + else if (GET_CODE (SET_SRC (exp)) == COMPARE) { if (!REG_P (XEXP (SET_SRC (exp), 0)) && XEXP (SET_SRC (exp), 1) != const0_rtx) @@ -1855,6 +1860,11 @@ cris_rtx_costs (rtx x, int code, int outer_code, int *total, } return false; + case ZERO_EXTRACT: + if (outer_code != COMPARE) + return false; + /* fall through */ + case ZERO_EXTEND: case SIGN_EXTEND: *total = rtx_cost (XEXP (x, 0), outer_code, speed); return true; |