1 ; RUN: llc -o - %s | FileCheck %s
2 target triple = "arm-unknown-unknown"
4 ; select with and i1/or i1 condition should be implemented as a series of 2
5 ; cmovs, not by producing two conditions and using and on them.
7 define i32 @select_and(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5) {
8 ; CHECK-LABEL: select_and
13 %cmp0 = icmp ult i32 %a0, %a1
14 %cmp1 = icmp ult i32 %a2, %a3
15 %and = and i1 %cmp0, %cmp1
16 %res = select i1 %and, i32 %a4, i32 %a5
20 define i32 @select_or(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4, i32 %a5) {
21 ; select with and i1 condition should be implemented as a series of 2 cmovs, not
22 ; by producing two conditions and using and on them.
23 ; CHECK-LABEL: select_or
28 %cmp0 = icmp ult i32 %a0, %a1
29 %cmp1 = icmp ult i32 %a2, %a3
30 %and = or i1 %cmp0, %cmp1
31 %res = select i1 %and, i32 %a4, i32 %a5
35 ; If one of the conditions is materialized as a 0/1 value anyway, then the
36 ; sequence of 2 cmovs should not be used.
39 define i32 @select_noopt(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) {
40 ; CHECK-LABEL: select_noopt
43 %cmp0 = icmp ult i32 %a0, %a1
44 %cmp1 = icmp ult i32 %a1, %a2
45 %or = or i1 %cmp0, %cmp1
46 %zero_one = zext i1 %or to i32
47 store volatile i32 %zero_one, i32* @var32
48 %res = select i1 %or, i32 %a3, i32 %a4