DSPIC跳过指令

我在优化时遇到了这个问题。XC16 V1.30，-O1。DSPIC33 EV256GM106所发生的是调用一个函数，但其中一个参数不是校正函数原型。UE被加载到WrGe0.WRG1中，加载了结构的基地址，然后调用函数。两个地址是正确的。问题是……地址0x2550的指令被跳过！！！！从拆卸视图中退出。除了指令0x2550之外的所有单步骤（跳过）和W9的值在指令之前和之后都没有改变。**我在调用之前还添加了NOP，只是为了保证如果我禁用优化，这不会发生，但是代码变成20%个大的什么？？



      以下为原文

    I'm having this issue when optimization is enabled.

XC16 v1.30, -O1 enabled.
DSPIC33EV256GM106

what is happening is that a function is called but one of the parameter isn't correct

function prototype
void function(unsigned int param, mystruct_t *mystruct)

this is compiled as


0x2750: MOV #0x1514, W9
0x27A2: MOV #0x1300, W1
0x27A4: MOV [W9], W0
0x27A6: RCALL function



translated, WREG9 is loaded with the address of the variable and then its current value is loaded into WREG0.
WREG1 is loaded with the base address of the structure, then the function is called.
the two addresses are CORRECT

the problem is...
INSTRUCTION AT ADDRESS 0x2750 IS SKIPPED!!!
stepped from disassembly view.. all single steps besides instruction 0x2750 (skipped over) and value of W9 doesn't change before and after the instruction.

** I also added NOPs before the call just to be sure

this is not happening if i disable optimizations, however code becomes 20% bigger
what the??