| %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 */ |
| mov r0, rINST, lsr #8 @ r0<- A+ |
| mov r1, rINST, lsr #12 @ r1<- B |
| and r0, r0, #15 |
| GET_VREG(r3, r1) @ r3<- vB |
| GET_VREG(r2, r0) @ r2<- vA |
| FETCH_S(r1, 1) @ r1<- branch offset, in code units |
| cmp r2, r3 @ compare (vA, vB) |
| mov${revcmp} r1, #2 @ r1<- BYTE branch dist for not-taken |
| adds r2, r1, r1 @ convert to bytes, check sign |
| FETCH_ADVANCE_INST_RB(r2) @ update rPC, load rINST |
| #if defined(WITH_JIT) |
| ldr r0, [rSELF, #offThread_pJitProfTable] |
| ldrmi rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh rIBASE |
| cmp r0,#0 |
| bne common_updateProfile |
| #else |
| ldrmi rIBASE, [rSELF, #offThread_curHandlerTable] @ refresh rIBASE |
| #endif |
| GET_INST_OPCODE(ip) @ extract opcode from rINST |
| GOTO_OPCODE(ip) @ jump to next instruction |
