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; Tests lowerings of different versions of coro.await.suspend
; RUN: opt < %s -passes='module(coro-early),cgscc(coro-split),simplifycfg' -S | FileCheck %s
%Awaiter = type {}
define void @f() presplitcoroutine {
entry:
%awaiter = alloca %Awaiter
%id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
%size = call i32 @llvm.coro.size.i32()
%alloc = call ptr @malloc(i32 %size)
%hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
call void @llvm.coro.await.suspend.handle(ptr %awaiter, ptr %hdl, ptr @await_suspend_wrapper_handle)
%suspend.init = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %suspend.init, label %ret [
i8 0, label %step
i8 1, label %cleanup
]
; Check the calling convention for resuming function is fastcc
; CHECK: define {{[^@]*}} @f()
; CHECK: entry:
; CHECK: %[[NEXT_HDL:.+]] = call ptr @await_suspend_wrapper_handle(
; CHECK-NEXT: %[[CONT:.+]] = call ptr @llvm.coro.subfn.addr(ptr %[[NEXT_HDL]], i8 0)
; CHECK-NEXT: call fastcc void %[[CONT]](ptr %[[NEXT_HDL]])
step:
br label %cleanup
cleanup:
%mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
call void @free(ptr %mem)
br label %ret
ret:
call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
ret void
}
; check that we were haven't accidentally went out of @f body
; CHECK-LABEL: @f.resume(
; CHECK-LABEL: @f.destroy(
; CHECK-LABEL: @f.cleanup(
declare ptr @await_suspend_wrapper_handle(ptr, ptr)
declare ptr @llvm.coro.free(token, ptr)
declare i32 @llvm.coro.size.i32()
declare i8 @llvm.coro.suspend(token, i1)
declare void @llvm.coro.resume(ptr)
declare void @llvm.coro.destroy(ptr)
declare token @llvm.coro.id(i32, ptr, ptr, ptr)
declare i1 @llvm.coro.alloc(token)
declare ptr @llvm.coro.begin(token, ptr)
declare void @llvm.coro.await.suspend.handle(ptr, ptr, ptr)
declare i1 @llvm.coro.end(ptr, i1, token)
declare noalias ptr @malloc(i32)
declare void @free(ptr)
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