xref: /llvm-project/llvm/test/Transforms/Coroutines/coro-split-alloc.ll (revision 51d5d7bbae92493a5bfa7cc6b519de8a5bb32fdb) 
1; Tests that coro-split passes initialized values to coroutine frame allocator.
2; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
3
4define ptr @f(i32 %argument) presplitcoroutine {
5entry:
6  %argument.addr = alloca i32, align 4
7  %incremented = add i32 %argument, 1
8  store i32 %incremented, ptr %argument.addr, align 4
9  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
10  %need.alloc = call i1 @llvm.coro.alloc(token %id)
11  br i1 %need.alloc, label %dyn.alloc, label %begin
12
13dyn.alloc:
14  %size = call i32 @llvm.coro.size.i32()
15  %allocator_argument = load i32, ptr %argument.addr, align 4
16  %alloc = call ptr @custom_alloctor(i32 %size, i32 %allocator_argument)
17  br label %begin
18
19begin:
20  %phi = phi ptr [ null, %entry ], [ %alloc, %dyn.alloc ]
21  %hdl = call ptr @llvm.coro.begin(token %id, ptr %phi)
22  %print_argument = load i32, ptr %argument.addr, align 4
23  call void @print(i32 %print_argument)
24  %0 = call i8 @llvm.coro.suspend(token none, i1 false)
25  switch i8 %0, label %suspend [i8 0, label %resume
26                                i8 1, label %cleanup]
27resume:
28  call void @print(i32 1)
29  br label %cleanup
30
31cleanup:
32  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
33  call void @free(ptr %mem)
34  br label %suspend
35suspend:
36  call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
37  ret ptr %hdl
38}
39
40; CHECK-LABEL: @f(
41; CHECK: %argument.addr = alloca i32
42; CHECK: %incremented = add i32 %argument, 1
43; CHECK-NEXT: store i32 %incremented, ptr %argument.addr
44; CHECK-LABEL: dyn.alloc:
45; CHECK: %allocator_argument = load i32, ptr %argument.addr
46; CHECK: %alloc = call ptr @custom_alloctor(i32 24, i32 %allocator_argument)
47; CHECK-LABEL: begin:
48; CHECK: %print_argument = load i32, ptr %argument.addr
49; CHECK: call void @print(i32 %print_argument)
50
51declare ptr @llvm.coro.free(token, ptr)
52declare i32 @llvm.coro.size.i32()
53declare i8  @llvm.coro.suspend(token, i1)
54declare void @llvm.coro.resume(ptr)
55declare void @llvm.coro.destroy(ptr)
56
57declare token @llvm.coro.id(i32, ptr, ptr, ptr)
58declare i1 @llvm.coro.alloc(token)
59declare ptr @llvm.coro.begin(token, ptr)
60declare i1 @llvm.coro.end(ptr, i1, token)
61
62declare noalias ptr @custom_alloctor(i32, i32)
63declare void @print(i32)
64declare void @free(ptr)
65