https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111500
--- Comment #4 from Luke <cptarse-luke at yahoo dot com> ---
the a.i file for example #1a is:
# 1 "a.c"
# 1 "/tmp//"
# 1 "<built-in>"
# 1 "<command-line>"
# 1 "a.c"
void artiSUBS() {
for (int i=100; i>0; i--)
*(volatile int*)0xE000E014 = i;
}
the command-line was:
> arm-none-eabi-gcc -save-temps -S a.c -O3 -g -mcpu=cortex-m0plus -mthumb -Wall
> --specs=nosys.specs -nostdlib -fdata-sections -ffunction-sections
> -ffreestanding -Winline
and the resulting a.s file contains that subs/cmp sequence...
