1; RUN: opt -passes='loop(loop-instsimplify,loop-simplifycfg,unswitch),verify<loops>' -S < %s | FileCheck %s 2; RUN: opt -verify-memoryssa -passes='loop-mssa(loop-instsimplify,loop-simplifycfg,unswitch),verify<loops>' -S < %s | FileCheck %s 3 4declare void @some_func() noreturn 5 6define i32 @test1(i32* %var, i1 %cond1, i1 %cond2) { 7; CHECK-LABEL: @test1( 8entry: 9 br label %loop_begin 10; CHECK-NEXT: entry: 11; CHECK-NEXT: br i1 %{{.*}}, label %entry.split, label %loop_exit.split 12; 13; CHECK: entry.split: 14; CHECK-NEXT: br i1 %{{.*}}, label %entry.split.split, label %loop_exit 15; 16; CHECK: entry.split.split: 17; CHECK-NEXT: br label %loop_begin 18 19loop_begin: 20 br i1 %cond1, label %continue, label %loop_exit ; first trivial condition 21 22continue: 23 %var_val = load i32, i32* %var 24 %var_cond = trunc i32 %var_val to i1 25 %maybe_cond = select i1 %cond1, i1 %cond2, i1 %var_cond 26 br i1 %maybe_cond, label %do_something, label %loop_exit ; second trivial condition 27 28do_something: 29 call void @some_func() noreturn nounwind 30 br label %loop_begin 31; CHECK: loop_begin: 32; CHECK-NEXT: call 33; CHECK-NEXT: br label %loop_begin 34 35loop_exit: 36 ret i32 0 37; CHECK: loop_exit: 38; CHECK-NEXT: br label %loop_exit.split 39; 40; CHECK: loop_exit.split: 41; CHECK-NEXT: ret 42} 43