| %verify "branch taken" |
| %verify "branch not taken" |
| /* |
| * Generic two-operand compare-and-branch operation. Provide a "revcmp" |
| * fragment that specifies the *reverse* comparison to perform, e.g. |
| * for "if-le" you would use "gt". |
| * |
| * For: if-eq, if-ne, if-lt, if-ge, if-gt, if-le |
| */ |
| /* if-cmp vA, vB, +CCCC */ |
| movzx rINSTbl,%ecx # ecx <- A+ |
| andb $$0xf,%cl # ecx <- A |
| GET_VREG_R %eax %ecx # eax <- vA |
| sarl $$4,rINST # rINST<- B |
| cmpl (rFP,rINST,4),%eax # compare (vA, vB) |
| movswl 2(rPC),rINST # Get signed branch offset |
| movl $$2,%eax # assume not taken |
| j${revcmp} 1f |
| testl rINST,rINST |
| js common_backwardBranch |
| movl rINST,%eax |
| 1: |
| FETCH_INST_INDEXED %eax |
| ADVANCE_PC_INDEXED %eax |
| GOTO_NEXT |
