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/*
* Generic one-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-eqz, if-nez, if-ltz, if-gez, if-gtz, if-lez
*/
/* if-cmp vAA, +BBBB */
mov r0, rINST, lsr #8 @ r0<- AA
GET_VREG r2, r0 @ r2<- vAA
FETCH_S rINST, 1 @ rINST<- branch offset, in code units
ldr lr, [rSELF, #THREAD_FLAGS_OFFSET]
cmp r2, #0 @ compare (vA, 0)
mov${revcmp} rINST, #2
#if MTERP_PROFILE_BRANCHES
@ TUNING: once measurements are complete, remove #if and hand-schedule.
EXPORT_PC
mov r0, rSELF
add r1, rFP, #OFF_FP_SHADOWFRAME
mov r2, rINST
bl MterpProfileBranch @ (self, shadow_frame, offset)
cmp r0, #0
bne MterpOnStackReplacement @ Note: offset must be in rINST
#endif
adds r1, rINST, rINST @ convert to bytes & set flags
FETCH_ADVANCE_INST_RB r1 @ update rPC, load rINST
bmi MterpCheckSuspendAndContinue
GET_INST_OPCODE ip @ extract opcode from rINST
GOTO_OPCODE ip @ jump to next instruction
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