1    /*
2     * Generic one-operand compare-and-branch operation.  Provide a "condition"
3     * fragment that specifies the comparison to perform, e.g. for
4     * "if-lez" you would use "le".
5     *
6     * For: if-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez
7     */
8    /* if-cmp vAA, +BBBB */
9    .extern MterpProfileBranch
10    srl     a2, rINST, 8                # a2 <- AA
11    lh      rINST, 2(rPC)               # rINST <- offset (sign-extended BBBB)
12    GET_VREG a0, a2                     # a0 <- vAA
13    b${condition}zc a0, 1f
14    li      rINST, 2                    # offset if branch not taken
151:
16#if MTERP_PROFILE_BRANCHES
17    EXPORT_PC
18    move    a0, rSELF
19    daddu   a1, rFP, OFF_FP_SHADOWFRAME
20    move    a2, rINST
21    jal     MterpProfileBranch          # (self, shadow_frame, offset)
22    bnezc   v0, MterpOnStackReplacement # Note: offset must be in rINST
23#endif
24    dlsa    rPC, rINST, rPC, 1          # rPC <- rPC + offset * 2
25    lw      ra, THREAD_FLAGS_OFFSET(rSELF)  # Preload flags for MterpCheckSuspendAndContinue
26    move    a0, rINST                   # a0 <- offset
27    FETCH_INST                          # load rINST
28    bltz    a0, MterpCheckSuspendAndContinue  # suspend check if backwards branch
29    GET_INST_OPCODE v0                  # extract opcode from rINST
30    GOTO_OPCODE v0                      # jump to next instruction
31