1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
; Need to move users of allocas that were moved into the coroutine frame after
; coro.begin.
; RUN: opt < %s -passes='cgscc(coro-split),simplifycfg,early-cse' -S | FileCheck %s
define nonnull i8* @f(i32 %n) "coroutine.presplit"="1" {
; CHECK-LABEL: @f(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ID:%.*]] = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* bitcast ([3 x void (%f.Frame*)*]* @f.resumers to i8*))
; CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
; CHECK-NEXT: store i32 [[N:%.*]], i32* [[N_ADDR]], align 4
; CHECK-NEXT: [[CALL:%.*]] = tail call i8* @malloc(i32 24)
; CHECK-NEXT: [[TMP0:%.*]] = tail call noalias nonnull i8* @llvm.coro.begin(token [[ID]], i8* [[CALL]])
; CHECK-NEXT: [[FRAMEPTR:%.*]] = bitcast i8* [[TMP0]] to %f.Frame*
; CHECK-NEXT: [[RESUME_ADDR:%.*]] = getelementptr inbounds [[F_FRAME:%.*]], %f.Frame* [[FRAMEPTR]], i32 0, i32 0
; CHECK-NEXT: store void (%f.Frame*)* @f.resume, void (%f.Frame*)** [[RESUME_ADDR]], align 8
; CHECK-NEXT: [[DESTROY_ADDR:%.*]] = getelementptr inbounds [[F_FRAME]], %f.Frame* [[FRAMEPTR]], i32 0, i32 1
; CHECK-NEXT: store void (%f.Frame*)* @f.destroy, void (%f.Frame*)** [[DESTROY_ADDR]], align 8
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[F_FRAME]], %f.Frame* [[FRAMEPTR]], i32 0, i32 2
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[N_ADDR]], align 4
; CHECK-NEXT: store i32 [[TMP2]], i32* [[TMP1]], align 4
;
entry:
%id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null);
%n.addr = alloca i32
store i32 %n, i32* %n.addr ; this needs to go after coro.begin
%0 = tail call i32 @llvm.coro.size.i32()
%call = tail call i8* @malloc(i32 %0)
%1 = tail call noalias nonnull i8* @llvm.coro.begin(token %id, i8* %call)
%2 = bitcast i32* %n.addr to i8*
call void @ctor(i8* %2)
br label %for.cond
for.cond:
%3 = load i32, i32* %n.addr
%dec = add nsw i32 %3, -1
store i32 %dec, i32* %n.addr
call void @print(i32 %3)
%4 = call i8 @llvm.coro.suspend(token none, i1 false)
%conv = sext i8 %4 to i32
switch i32 %conv, label %coro_Suspend [
i32 0, label %for.cond
i32 1, label %coro_Cleanup
]
coro_Cleanup:
%5 = call i8* @llvm.coro.free(token %id, i8* nonnull %1)
call void @free(i8* %5)
br label %coro_Suspend
coro_Suspend:
call i1 @llvm.coro.end(i8* null, i1 false)
ret i8* %1
}
; CHECK-LABEL: @main
define i32 @main() {
entry:
%hdl = call i8* @f(i32 4)
call void @llvm.coro.resume(i8* %hdl)
call void @llvm.coro.resume(i8* %hdl)
call void @llvm.coro.destroy(i8* %hdl)
ret i32 0
}
declare i8* @malloc(i32)
declare void @free(i8*)
declare void @print(i32)
declare void @ctor(i8* nocapture readonly)
declare token @llvm.coro.id(i32, i8*, i8*, i8*)
declare i32 @llvm.coro.size.i32()
declare i8* @llvm.coro.begin(token, i8*)
declare i8 @llvm.coro.suspend(token, i1)
declare i8* @llvm.coro.free(token, i8*)
declare i1 @llvm.coro.end(i8*, i1)
declare void @llvm.coro.resume(i8*)
declare void @llvm.coro.destroy(i8*)
|
