On 06/11/12 18:49, Ian Bolton wrote:
OK for trunk?
Cheers,
Ian
2012-11-06 Ian Bolton
* gcc/config/aarch64/aarch64.md (*compare_neg): New pattern.
* gcc/testsuite/gcc.target/aarch64/cmn.c: New test.
* gcc/testsuite/gcc.target/aarch64/adds.c: New test.
* gcc/tes
Hi all,
When we perform an addition but only use the result for a comparison,
we can save an instruction.
Consider this function:
int foo (int a, int b) {
return ((a + b) == 0) ? 1 : 7;
}
Here is the original output:
foo:
add w0, w0, w1
cmp w0, wzr
mov w1, 7
