xref: /llvm-project/llvm/test/Transforms/Coroutines/coro-padding.ll (revision 51d5d7bbae92493a5bfa7cc6b519de8a5bb32fdb)
1; Check that we will insert the correct padding if natural alignment of the
2; spilled data does not match the alignment specified in alloca instruction.
3; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
4
5%PackedStruct = type <{ i64 }>
6
7declare void @consume(ptr)
8
9define ptr @f() presplitcoroutine {
10entry:
11  %data = alloca %PackedStruct, align 32
12  %id = call token @llvm.coro.id(i32 0, ptr null, ptr null, ptr null)
13  %size = call i32 @llvm.coro.size.i32()
14  %alloc = call ptr @malloc(i32 %size)
15  %hdl = call ptr @llvm.coro.begin(token %id, ptr %alloc)
16  call void @consume(ptr %data)
17  %0 = call i8 @llvm.coro.suspend(token none, i1 false)
18  switch i8 %0, label %suspend [i8 0, label %resume
19                                i8 1, label %cleanup]
20resume:
21  call void @consume(ptr %data)
22  br label %cleanup
23
24cleanup:
25  %mem = call ptr @llvm.coro.free(token %id, ptr %hdl)
26  call void @free(ptr %mem)
27  br label %suspend
28suspend:
29  call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
30  ret ptr %hdl
31}
32
33; See if the padding was inserted before PackedStruct
34; CHECK-LABEL: %f.Frame = type { ptr, ptr, i1, [15 x i8], %PackedStruct }
35
36; See if we used correct index to access packed struct (padding is field 3)
37; CHECK-LABEL: @f(
38; CHECK:       %[[DATA:.+]] = getelementptr inbounds %f.Frame, ptr %hdl, i32 0, i32 4
39; CHECK-NEXT:  call void @consume(ptr %[[DATA]])
40; CHECK: ret ptr
41
42; See if we used correct index to access packed struct (padding is field 3)
43; CHECK-LABEL: @f.resume(
44; CHECK:       %[[DATA:.+]] = getelementptr inbounds %f.Frame, ptr %hdl, i32 0, i32 4
45; CHECK-NEXT:  call void @consume(ptr %[[DATA]])
46; CHECK: ret void
47
48declare ptr @llvm.coro.free(token, ptr)
49declare i32 @llvm.coro.size.i32()
50declare i8  @llvm.coro.suspend(token, i1)
51declare void @llvm.coro.resume(ptr)
52declare void @llvm.coro.destroy(ptr)
53
54declare token @llvm.coro.id(i32, ptr, ptr, ptr)
55declare i1 @llvm.coro.alloc(token)
56declare ptr @llvm.coro.begin(token, ptr)
57declare i1 @llvm.coro.end(ptr, i1, token)
58
59declare noalias ptr @malloc(i32)
60declare double @print(double)
61declare void @free(ptr)
62