1 ; First example from Doc/Coroutines.rst (two block loop)
2 ; RUN: opt < %s -enable-coroutines -O2 -S | FileCheck %s
4 define i8* @f(i32 %n) {
6 %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null)
7 %size = call i32 @llvm.coro.size.i32()
8 %alloc = call i8* @malloc(i32 %size)
9 %hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
13 %n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
14 call void @print(i32 %n.val)
15 %0 = call i8 @llvm.coro.suspend(token none, i1 false)
16 switch i8 %0, label %suspend [i8 0, label %resume
19 %inc = add i32 %n.val, 1
23 %mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
24 call void @free(i8* %mem)
27 call i1 @llvm.coro.end(i8* %hdl, i1 0)
34 %hdl = call i8* @f(i32 4)
35 call void @llvm.coro.resume(i8* %hdl)
36 call void @llvm.coro.resume(i8* %hdl)
37 call void @llvm.coro.destroy(i8* %hdl)
40 ; CHECK: call void @print(i32 4)
41 ; CHECK: call void @print(i32 5)
42 ; CHECK: call void @print(i32 6)
46 declare token @llvm.coro.id(i32, i8*, i8*, i8*)
47 declare i8* @llvm.coro.alloc(token)
48 declare i8* @llvm.coro.free(token, i8*)
49 declare i32 @llvm.coro.size.i32()
50 declare i8 @llvm.coro.suspend(token, i1)
51 declare void @llvm.coro.resume(i8*)
52 declare void @llvm.coro.destroy(i8*)
54 declare i8* @llvm.coro.begin(token, i8*)
55 declare i1 @llvm.coro.end(i8*, i1)
57 declare noalias i8* @malloc(i32)
58 declare void @print(i32)
59 declare void @free(i8*)