1 ; RUN: opt < %s -loop-unswitch -loop-unswitch-threshold=0 -S 2>&1 | FileCheck %s
2 ; RUN: opt < %s -loop-unswitch -loop-unswitch-threshold=0 -enable-mssa-loop-dependency=true -verify-memoryssa -S 2>&1 | FileCheck %s
4 ; This is to test trivial loop unswitch only happens when trivial condition
5 ; itself is an LIV loop condition (not partial LIV which could occur in and/or).
7 define i32 @test(i1 %cond1, i32 %var1) {
12 %var3 = phi i32 [%var1, %entry], [%var2, %do_something]
13 %cond2 = icmp eq i32 %var3, 10
14 %cond.and = and i1 %cond1, %cond2
16 ; %cond.and only has %cond1 as LIV so no unswitch should happen.
17 ; CHECK: br i1 %cond.and, label %do_something, label %loop_exit
18 br i1 %cond.and, label %do_something, label %loop_exit
21 %var2 = add i32 %var3, 1
22 call void @some_func() noreturn nounwind
29 declare void @some_func() noreturn