xref: /llvm-project/llvm/test/Transforms/Coroutines/coro-align32.ll (revision 51d5d7bbae92493a5bfa7cc6b519de8a5bb32fdb) 
1; Tests that the coro.align intrinsic could be lowered to correct alignment
2; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
3
4define ptr @f() presplitcoroutine {
5entry:
6  %x = alloca i64, align 16
7  %y = alloca i32, align 32
8  %z = alloca i32, align 16
9  %alpha = alloca i1, align 8
10  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
11  %size = call i32 @llvm.coro.size.i32()
12  %align = call i32 @llvm.coro.align.i32()
13  %alloc = call ptr @aligned_alloc(i32 %align, i32 %size)
14  %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
15  %sp1 = call i8 @llvm.coro.suspend(token none, i1 false)
16  switch i8 %sp1, label %suspend [i8 0, label %resume
17                                  i8 1, label %cleanup]
18resume:
19  call void @capture_call(ptr %x)
20  call void @capture_call(ptr %y)
21  call void @capture_call(ptr %z)
22  call void @capture_call(ptr %alpha)
23  br label %cleanup
24
25cleanup:
26  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
27  call void @free(ptr %mem)
28  br label %suspend
29
30suspend:
31  call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
32  ret ptr %hdl
33}
34
35; %x needs to go to the frame since it's escaped; %y will stay as local since it doesn't escape.
36; CHECK:        %f.Frame = type { ptr, ptr, i64, i1, i1, [6 x i8], i32, [12 x i8], i32 }
37; CHECK-LABEL:  define ptr @f()
38; CHECK:          %[[ALLOC:.+]] = call ptr @aligned_alloc(i32 32, i32 56)
39; CHECK-NEXT:     call noalias nonnull ptr @llvm.coro.begin(token %id, ptr %[[ALLOC]])
40
41declare ptr @llvm.coro.free(token, ptr)
42declare i32 @llvm.coro.size.i32()
43declare i32 @llvm.coro.align.i32()
44declare i8  @llvm.coro.suspend(token, i1)
45declare void @llvm.coro.resume(ptr)
46declare void @llvm.coro.destroy(ptr)
47
48declare token @llvm.coro.id(i32, ptr, ptr, ptr)
49declare i1 @llvm.coro.alloc(token)
50declare ptr @llvm.coro.begin(token, ptr)
51declare i1 @llvm.coro.end(ptr, i1, token)
52
53declare void @capture_call(ptr)
54declare void @nocapture_call(ptr nocapture)
55declare noalias ptr @aligned_alloc(i32, i32)
56declare void @free(ptr)
57