Hi,
I've decided to update my mspgcc and I have compiled the 20120224
version (using Ubuntu 8.04). But I've noticed something strange, it
appears that the compiler is generating incorrect assembly code. This
is simple example:
void foo() {
volatile int y = 1;
}
int dummy() {
volatile int x = 0;
return x;
}
int main(void) {
if (dummy() == 1) {
foo();
return 1;
}
return 0;
}
Compiling with " msp430-gcc -mmcu=msp430f1611 -O2 -fno-inline main.c",
I get the following code for the main function:
0000403e <main>:
403e: b0 12 62 40 call #0x4062
4042: 1f 93 cmp #1, r15 ;r3 As==01
4044: 01 24 jz $+4 ;abs 0x4048
4046: 0f 43 clr r15
4048: b0 12 58 40 call #0x4058
404c: 1f 43 mov #1, r15 ;r3 As==01
0000404e <__stop_progExec__>:
Notice how the second call is executed regardless if the jump is taken
or not, which is incorrect. This causes foo() to be called even if
dummy() does not return 1.
Can anyone reproduce this issue? Is there a bug or I've messed up
somewhere? I've just tested the Windows build and I get the same
results.
Thanks!
Conrado
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