Conditional Execution not enabled?

Hi,

I am studying ARM's conditional execution code for my research. In my opinion, ARM condition codes and status registers is one of the greatest strengths of the processor.

I downloaded Keil uVision4 Evaluation Version and coded a simple C code I plucked from Wikipedia (en.wikipedia.org/.../ARM_architecture).

I then proceeded to compile the C code and switched to debug mode to study the asm code. However, instead of the optimized, more denser conditional codes, the codes are compiled into a "normal", non-optimized version.

For e.g. I am getting this:

CMP       R2,R1
BLE       0x00000104
SUB       R2,R2,R1
B         0x00000108
SUB       R1,R1,R2
CMP       R2,R1
BNE       0x000000F4

Instead of:

CMP    Ri, Rj
SUBGT  Ri, Ri, Rj
SUBLT  Rj, Rj, Ri
BNE    loop

And this is my C code:

while(i != j) {
        if (i > j)
           i -= j;
        else
           j -= i;
    }

I am wondering if there is something wrong with my setting. I am looking for the most compact code possible especially on conditional execution.

Any type of help or advice is greatly appreciated.

HY