Imported Upstream version 5.18.0.205

Former-commit-id: 7f59f7e792705db773f1caecdaa823092f4e2927

external/llvm/test/Transforms/SimpleLoopUnswitch/copy-metadata.ll

@@ -0,0 +1,34 @@
+; RUN: opt < %s -simple-loop-unswitch -S | FileCheck %s
+
+; This test checks if unswitched condition preserve make.implicit metadata.
+define i32 @test(i1 %cond) {
+; CHECK-LABEL: @test(
+entry:
+  br label %loop_begin
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    br i1 %{{.*}}, label %entry.split, label %loop_exit, !make.implicit !0
+;
+; CHECK:       entry.split:
+; CHECK-NEXT:    br label %loop_begin
+
+loop_begin:
+  br i1 %cond, label %continue, label %loop_exit, !make.implicit !0
+; CHECK:       loop_begin:
+; CHECK-NEXT:    br label %continue
+
+continue:
+  call void @some_func()
+  br label %loop_begin
+; CHECK:       continue:
+; CHECK-NEXT:    call
+; CHECK-NEXT:    br label %loop_begin
+
+loop_exit:
+  ret i32 0
+; CHECK:       loop_exit:
+; CHECK-NEXT:    ret
+}
+
+declare void @some_func()
+
+!0 = !{}