| %def zcmp(compare="1", branch=""): | |
| /* | |
| * Generic one-operand compare-and-branch operation. Provide a "condition" | |
| * fragment that specifies the comparison to perform. | |
| * | |
| * for: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez | |
| */ | |
| /* if-cmp vAA, +BBBB */ | |
| lsr w0, wINST, #8 // w0<- AA | |
| GET_VREG w2, w0 // w2<- vAA | |
| FETCH_S wINST, 1 // w1<- branch offset, in code units | |
| .if ${compare} | |
| cmp w2, #0 // compare (vA, 0) | |
| .endif | |
| ${branch} MterpCommonTakenBranchNoFlags | |
| cmp wPROFILE, #JIT_CHECK_OSR // possible OSR re-entry? | |
| b.eq .L_check_not_taken_osr | |
| FETCH_ADVANCE_INST 2 | |
| GET_INST_OPCODE ip // extract opcode from wINST | |
| GOTO_OPCODE ip // jump to next instruction |