60 lines · plain
1; Tests lowerings of different versions of coro.await.suspend2; RUN: opt < %s -passes='module(coro-early),cgscc(coro-split),simplifycfg' -S | FileCheck %s3 4%Awaiter = type {}5 6define void @f() presplitcoroutine {7entry:8 %awaiter = alloca %Awaiter9 %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)10 %size = call i32 @llvm.coro.size.i32()11 %alloc = call ptr @malloc(i32 %size)12 %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)13 call void @llvm.coro.await.suspend.handle(ptr %awaiter, ptr %hdl, ptr @await_suspend_wrapper_handle)14 %suspend.init = call i8 @llvm.coro.suspend(token none, i1 false)15 switch i8 %suspend.init, label %ret [16 i8 0, label %step17 i8 1, label %cleanup18 ]19 20; Check the calling convention for resuming function is fastcc21; CHECK: define {{[^@]*}} @f()22; CHECK: entry:23; CHECK: %[[NEXT_HDL:.+]] = call ptr @await_suspend_wrapper_handle(24; CHECK-NEXT: %[[CONT:.+]] = call ptr @llvm.coro.subfn.addr(ptr %[[NEXT_HDL]], i8 0)25; CHECK-NEXT: call fastcc void %[[CONT]](ptr %[[NEXT_HDL]])26step:27 br label %cleanup28 29cleanup:30 %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)31 call void @free(ptr %mem)32 br label %ret33 34ret:35 call void @llvm.coro.end(ptr %hdl, i1 0, token none)36 ret void37}38 39; check that we were haven't accidentally went out of @f body40; CHECK-LABEL: @f.resume(41; CHECK-LABEL: @f.destroy(42; CHECK-LABEL: @f.cleanup(43 44declare ptr @await_suspend_wrapper_handle(ptr, ptr)45 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.await.suspend.handle(ptr, ptr, ptr)56declare void @llvm.coro.end(ptr, i1, token)57 58declare noalias ptr @malloc(i32)59declare void @free(ptr)60