2 ; RUN: opt < %s -loop-unswitch -disable-output -stats 2>&1| FileCheck %s
3 ; RUN: opt < %s -loop-unswitch -enable-mssa-loop-dependency=true -verify-memoryssa -disable-output -stats 2>&1| FileCheck %s
5 ; Check the select statement in the loop will be unswitched.
6 ; CHECK: 1 loop-unswitch - Number of selects unswitched
7 define i32 @test(i1 zeroext %x, i32 %a) local_unnamed_addr #0 {
11 while.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
17 while.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
23 while.end: ; preds = %while.cond
24 %s.0.lcssa = phi i32 [ %s.0, %while.cond ]