%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 */ GET_OPA4(a0) # a0 <- A+ GET_OPB(a1) # a1 <- B GET_VREG(a3, a1) # a3 <- vB GET_VREG(a2, a0) # a2 <- vA b${revcmp} a2, a3, 1f # branch to 1 if comparison failed FETCH_S(a1, 1) # a1<- branch offset, in code units b 2f 1: li a1, 2 # a1- BYTE branch dist for not-taken 2: addu a2, a1, a1 # convert to bytes FETCH_ADVANCE_INST_RB(a2) # update rPC, load rINST #if defined(WITH_JIT) lw a0, offThread_pJitProfTable(rSELF) bgez a2, 3f lw rIBASE, offThread_curHandlerTable(rSELF) # refresh rIBASE 3: bnez a0, common_updateProfile #else bgez a2, 4f lw rIBASE, offThread_curHandlerTable(rSELF) # refresh rIBASE 4: #endif GET_INST_OPCODE(t0) # extract opcode from rINST GOTO_OPCODE(t0) # jump to next instruction