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1; Tests that coro-split pass splits the coroutine into f, f.resume and f.destroy2; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s3 4define ptr @f() presplitcoroutine !func_sanitize !0 {5entry:6 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)7 %need.alloc = call i1 @llvm.coro.alloc(token %id)8 br i1 %need.alloc, label %dyn.alloc, label %begin9 10dyn.alloc: 11 %size = call i32 @llvm.coro.size.i32()12 %alloc = call ptr @malloc(i32 %size)13 br label %begin14 15begin:16 %phi = phi ptr [ null, %entry ], [ %alloc, %dyn.alloc ]17 %hdl = call ptr @llvm.coro.begin(token %id, ptr %phi)18 call void @print(i32 0)19 %0 = call i8 @llvm.coro.suspend(token none, i1 false)20 switch i8 %0, label %suspend [i8 0, label %resume 21 i8 1, label %cleanup]22resume:23 call void @print(i32 1)24 br label %cleanup25 26cleanup:27 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)28 call void @free(ptr %mem)29 br label %suspend30suspend:31 call void @llvm.coro.end(ptr %hdl, i1 0, token none) 32 ret ptr %hdl33}34 35; Make a safe_elide call to f and CoroSplit should generate the .noalloc variant36define void @caller() presplitcoroutine {37entry:38 %ptr = call ptr @f() #139 ret void40}41 42; CHECK-LABEL: @f() !func_sanitize !0 {43; CHECK: call ptr @malloc44; CHECK: @llvm.coro.begin(token %id, ptr %phi)45; CHECK: store ptr @f.resume, ptr %hdl46; CHECK: %[[SEL:.+]] = select i1 %need.alloc, ptr @f.destroy, ptr @f.cleanup47; CHECK: store ptr %[[SEL]], ptr %destroy.addr48; CHECK: call void @print(i32 0)49; CHECK-NOT: call void @print(i32 1)50; CHECK-NOT: call void @free(51; CHECK: ret ptr %hdl52 53; CHECK-LABEL: @f.resume({{.*}}) {54; CHECK-NOT: call ptr @malloc55; CHECK-NOT: call void @print(i32 0)56; CHECK: call void @print(i32 1)57; CHECK-NOT: call void @print(i32 0)58; CHECK: call void @free(59; CHECK: ret void60 61; CHECK-LABEL: @f.destroy({{.*}}) {62; CHECK-NOT: call ptr @malloc63; CHECK-NOT: call void @print(64; CHECK: call void @free(65; CHECK: ret void66 67; CHECK-LABEL: @f.cleanup({{.*}}) {68; CHECK-NOT: call ptr @malloc69; CHECK-NOT: call void @print(70; CHECK-NOT: call void @free(71; CHECK: ret void72 73; CHECK-LABEL: @f.noalloc(ptr noundef nonnull align 8 dereferenceable(24) %{{.*}})74; CHECK-NOT: call ptr @malloc75; CHECK: call void @print(i32 0)76; CHECK-NOT: call void @print(i32 1)77; CHECK-NOT: call void @free(78; CHECK: ret ptr %{{.*}}79 80declare ptr @llvm.coro.free(token, ptr)81declare i32 @llvm.coro.size.i32()82declare i8 @llvm.coro.suspend(token, i1)83declare void @llvm.coro.resume(ptr)84declare void @llvm.coro.destroy(ptr)85 86declare token @llvm.coro.id(i32, ptr, ptr, ptr)87declare i1 @llvm.coro.alloc(token)88declare ptr @llvm.coro.begin(token, ptr)89declare void @llvm.coro.end(ptr, i1, token) 90 91declare noalias ptr @malloc(i32) allockind("alloc,uninitialized") "alloc-family"="malloc"92declare void @print(i32)93declare void @free(ptr) willreturn allockind("free") "alloc-family"="malloc"94 95!0 = !{i32 846595819, ptr null}96attributes #1 = { coro_elide_safe }97