Access size problem on ARM architecture
Philip Blundell
philb@gnu.org
Sat May 19 11:37:00 GMT 2001
>No warnings or errors are displayed.
>The generated assembly file contains:
>
> ldr r3, [r2, #24]! @ loadhi
>
>which is wrong since r3 is loaded with a 32 bit value instead of 16 bit.
>This leads to wrong behaviour of the while statement.
You should find that this instruction is followed by:
mov r3, r3, lsl #16
cmp r0, e3, lsr #16
or some similar construct that drops the unwanted bits from the register.
If you are seeing genuinely wrong behaviour, please post a complete testcase
that exhibits the problem.
p.
More information about the Gcc-bugs
mailing list