You need to read the datasheet for the particular PIC you want to use. On the 16F88, the HPWM 1 module (shown in the pinout as CCP1) is on RB0 instead of RB2. The pin that is 180 degrees out of phase is specified by you in the code. In "SPLITPHASE" I used RB7. You can use any port you want to duplicate and invert the HPWM output by specifying the pin you want.

START:
HPwm 1,127,100 'OUTPUT 100HZ SQUARE WAVE ON PORTB.0 ON 16F88

NEWSPLITPHASE: 'FOR 16F88
IF PORTB.0 = 1 THEN LOW PORTB.X 'IF RB0 IS HIGH MAKE YOUR PORTB PIN LOW
IF PORTB.0 = 0 THEN HIGH PORTB.X 'IF RB0 IS LOW MAKE YOUR PORTB PIN HIGH
GOTO NEWSPLITPHASE

You now have an inverted duplicate of the HPWM output on RB0 on your choice of portb. (In the code as PORTB.X)