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1; Tests that the meaningless lifetime intrinsics could be removed after corosplit.2; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s3 4define ptr @f(i1 %n) presplitcoroutine {5entry:6 %x = alloca i647 %y = alloca i648 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)9 %size = call i32 @llvm.coro.size.i32()10 %alloc = call ptr @malloc(i32 %size)11 %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)12 br i1 %n, label %flag_true, label %flag_false13 14flag_true:15 call void @llvm.lifetime.start.p0(ptr %x)16 br label %merge17 18flag_false:19 call void @llvm.lifetime.start.p0(ptr %y)20 br label %merge21 22merge:23 %phi = phi ptr [ %x, %flag_true ], [ %y, %flag_false ]24 store i8 1, ptr %phi25 %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)26 switch i8 %sp1, label %suspend [i8 0, label %resume27 i8 1, label %cleanup]28resume:29 call void @print(ptr %phi)30 call void @llvm.lifetime.end.p0(ptr %x)31 call void @llvm.lifetime.end.p0(ptr %y)32 br label %cleanup33 34cleanup:35 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)36 call void @free(ptr %mem)37 br label %suspend38 39suspend:40 call void @llvm.coro.end(ptr %hdl, i1 0, token none)41 ret ptr %hdl42}43 44; CHECK-NOT: call{{.*}}@llvm.lifetime45 46declare ptr @llvm.coro.free(token, ptr)47declare i32 @llvm.coro.size.i32()48declare i8 @llvm.coro.suspend(token, i1)49declare void @llvm.coro.resume(ptr)50declare void @llvm.coro.destroy(ptr)51 52declare token @llvm.coro.id(i32, ptr, ptr, ptr)53declare i1 @llvm.coro.alloc(token)54declare ptr @llvm.coro.begin(token, ptr)55declare void @llvm.coro.end(ptr, i1, token)56 57declare void @llvm.lifetime.start.p0(ptr nocapture)58declare void @llvm.lifetime.end.p0(ptr nocapture)59 60declare void @print(ptr)61declare noalias ptr @malloc(i32)62declare void @free(ptr)63