1 ; RUN: llc -o - %s | FileCheck %s
2 target triple = "x86_64-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, float %a2, float %a3, i32 %a4, i32 %a5) {
8 ; CHECK-LABEL: select_and
14 %cmp0 = icmp ult i32 %a0, %a1
15 %cmp1 = fcmp olt float %a2, %a3
16 %and = and i1 %cmp0, %cmp1
17 %res = select i1 %and, i32 %a4, i32 %a5
21 define i32 @select_or(i32 %a0, i32 %a1, float %a2, float %a3, i32 %a4, i32 %a5) {
22 ; select with and i1 condition should be implemented as a series of 2 cmovs, not
23 ; by producing two conditions and using and on them.
24 ; CHECK-LABEL: select_or
30 %cmp0 = icmp ult i32 %a0, %a1
31 %cmp1 = fcmp olt float %a2, %a3
32 %and = or i1 %cmp0, %cmp1
33 %res = select i1 %and, i32 %a4, i32 %a5
37 ; If one of the conditions is materialized as a 0/1 value anyway, then the
38 ; sequence of 2 cmovs should not be used.
41 define i32 @select_noopt(i32 %a0, i32 %a1, i32 %a2, i32 %a3, i32 %a4) {
42 ; CHECK-LABEL: select_noopt
45 %cmp0 = icmp ult i32 %a0, %a1
46 %cmp1 = icmp ult i32 %a1, %a2
47 %or = or i1 %cmp0, %cmp1
48 %zero_one = zext i1 %or to i32
49 store volatile i32 %zero_one, i32* @var32
50 %res = select i1 %or, i32 %a3, i32 %a4