Created attachment 23275 [details]
Test case in C

Consider the following snippet compiled with -O3:

int lsl_short(int f) {
    return f << 1;
}

gcc 4.3.3 is copying the value from r25:r24 (first parameter) to r19:r18, then moving back to r25:r24 (return value). Same for longs but with 4 registers.

Expected:
The lsl and rol should happen directly on r25:r24, just as they did in 4.2