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1; Tests that a coroutine is split, inlined into the caller and devirtualized.2; RUN: opt < %s -S -passes='default<O2>' | FileCheck %s3 4define ptr @f() presplitcoroutine {5entry:6 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)7 %need.dyn.alloc = call i1 @llvm.coro.alloc(token %id)8 br i1 %need.dyn.alloc, label %dyn.alloc, label %coro.begin9dyn.alloc:10 %size = call i32 @llvm.coro.size.i32()11 %alloc = call ptr @malloc(i32 %size)12 br label %coro.begin13coro.begin:14 %phi = phi ptr [ null, %entry ], [ %alloc, %dyn.alloc ]15 %hdl = call ptr @llvm.coro.begin(token %id, ptr %phi)16 call void @print(i32 0)17 %0 = call i8 @llvm.coro.suspend(token none, i1 false)18 switch i8 %0, label %suspend [i8 0, label %resume 19 i8 1, label %cleanup]20resume:21 call void @print(i32 1)22 br label %cleanup23 24cleanup:25 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)26 call void @free(ptr %mem)27 br label %suspend28suspend:29 call void @llvm.coro.end(ptr %hdl, i1 0, token none) 30 ret ptr %hdl31}32define i32 @main() {33entry:34 %hdl = call ptr @f()35 call void @llvm.coro.resume(ptr %hdl)36 ret i32 037; CHECK-LABEL: @main(38; CHECK: call void @print(i32 0)39; CHECK: call void @print(i32 1)40; CHECK: ret i32 041}42 43declare ptr @llvm.coro.free(token, ptr)44declare i32 @llvm.coro.size.i32()45declare i8 @llvm.coro.suspend(token, i1)46declare void @llvm.coro.resume(ptr)47declare void @llvm.coro.destroy(ptr)48 49declare token @llvm.coro.id(i32, ptr, ptr, ptr)50declare i1 @llvm.coro.alloc(token)51declare ptr @llvm.coro.begin(token, ptr)52declare void @llvm.coro.end(ptr, i1, token) 53 54declare noalias ptr @malloc(i32)55declare void @print(i32)56declare void @free(ptr)57