1; REQUIRES: asserts
2; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -disable-output -stats 2>&1| FileCheck %s
3; RUN: opt < %s -loop-unswitch -enable-new-pm=0 -enable-mssa-loop-dependency=true -verify-memoryssa -disable-output -stats 2>&1| FileCheck %s
4
5; Check the select statement in the loop will be unswitched.
6; CHECK: 1 loop-unswitch - Number of selects unswitched
7define i32 @test(i1 zeroext %x, i32 %a) local_unnamed_addr #0 {
8entry:
9  br label %while.cond
10
11while.cond:                                       ; preds = %while.body, %entry
12  %i.0 = phi i32 [ 0, %entry ], [ %inc, %while.body ]
13  %s.0 = phi i32 [ %a, %entry ], [ %add, %while.body ]
14  %cmp = icmp slt i32 %i.0, 10000
15  br i1 %cmp, label %while.body, label %while.end
16
17while.body:                                       ; preds = %while.cond
18  %cond = select i1 %x, i32 %a, i32 %i.0
19  %add = add nsw i32 %s.0, %cond
20  %inc = add nsw i32 %i.0, 1
21  br label %while.cond
22
23while.end:                                        ; preds = %while.cond
24  %s.0.lcssa = phi i32 [ %s.0, %while.cond ]
25  ret i32 %s.0.lcssa
26}
27
28