Hi all, I get this error with -O3 (= -O2 -finline-functions -frename-registers):
----------------------------msp430-gcc -c -g -O2 -finline-functions -frename-registers -mmcu=msp430x1121 bug.c msp430-gcc -c -g -O2 -finline-functions -frename-registers -mmcu=msp430x1121 dco_speed.c
dco_speed.c: In function `dco_speed':dco_speed.c:54: Internal compiler error in verify_local_live_at_start, at flow.c:586
Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://gcc.gnu.org/bugs.html> for instructions. make: *** [dco_speed.o] Error 1 ---------------------------- It works without -frename-registers. Ciao, Paul bug.c: ---------------------------- #include "dco_speed.h" int main(void){ dco_speed(); } ---------------------------- dco_speed.h: ---------------------------- #ifndef DCO_SPEED_H #define DCO_SPEED_H #include <io.h> #include <iomacros.h> #include <signal.h> /** * Determine MCLK freq */ unsigned long dco_speed(); #endif ---------------------------- dco_speed.c: ---------------------------- #include "dco_speed.h" /** * Determine the CPU clock frequency (MCLK). There has to be * a 32768 Hz oscilator connected to the MSP430. */ unsigned long dco_speed(){ //assume, there is a 32768 Hz low speed oscilator connected volatile unsigned int i=0; unsigned long ret=0; //set maximal DCO CPU speed DCOCTL = DCO0 + DCO1 + DCO2; BCSCTL1 = DIVA_3 + RSEL2 + RSEL1 + RSEL0; BCSCTL2 = 0x00; while(++i); //wait //timer settings TACTL=TASSEL1+MC1+TACLR; //clock for TAR is MCLK, upmode CCTL2=CCIS0+CM0+CAP; //ACLK/8 input, capture mode, rising edge //measure while (!(CCTL2 & 1)); //wait until int occure CCTL2&=0xfffe; //clear ie flag ret=CCR2; for (i=0;i<16;i++){ while (!(CCTL2 & 1)); //wait until int occure CCTL2&=0xfffe; //clear ie flag } return (CCR2-ret)*(32768/(8*16)); //exact MCLK freq } ---------------------------- Makefile: ---------------------------- #OBJS=start.o uart.o dco_speed.o OBJS=bug.o dco_speed.o TARGET=bug.elf CC=msp430-gcc DELETER=del #-O3 = -O2 -finline-functions -frename-registers #following line cause compiler error!! FLAGS=-g -O2 -finline-functions -frename-registers -mmcu=msp430x1121 #it works without -frename-registers #FLAGS=-g -O2 -finline-functions -mmcu=msp430x1121 .c.o: $(CC) -c $(FLAGS) $< all: $(OBJS) $(CC) $(FLAGS) -o $(TARGET) $(OBJS)clean:
$(DELETER) *.o *.bak *.elf ----------------------------
<<attachment: bug.zip>>
