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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes='default<O2>' -S | FileCheck %s
target datalayout = "E-p:32:32"
define ptr @f(ptr %buffer, i32 %n, ptr swifterror %errorslot) {
; CHECK-LABEL: @f(
; CHECK-NEXT: coro.return:
; CHECK-NEXT: store i32 [[N:%.*]], ptr [[BUFFER:%.*]], align 4
; CHECK-NEXT: tail call void @print(i32 [[N]])
; CHECK-NEXT: store ptr null, ptr [[ERRORSLOT:%.*]], align 4
; CHECK-NEXT: tail call void @maybeThrow(ptr nonnull swifterror [[ERRORSLOT]])
; CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[ERRORSLOT]], align 4
; CHECK-NEXT: tail call void @logError(ptr [[TMP0]])
; CHECK-NEXT: store ptr [[TMP0]], ptr [[ERRORSLOT]], align 4
; CHECK-NEXT: ret ptr @f.resume.0
;
entry:
%id = call token @llvm.coro.id.retcon(i32 8, i32 4, ptr %buffer, ptr @f_prototype, ptr @allocate, ptr @deallocate)
%hdl = call ptr @llvm.coro.begin(token %id, ptr null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
call void @print(i32 %n.val)
call void @maybeThrow(ptr swifterror %errorslot)
%errorload1 = load ptr, ptr %errorslot
call void @logError(ptr %errorload1)
%suspend_result = call { i1, ptr } (...) @llvm.coro.suspend.retcon.i1p0p0i8()
%unwind0 = extractvalue { i1, ptr } %suspend_result, 0
br i1 %unwind0, label %cleanup, label %resume
resume:
%inc = add i32 %n.val, 1
br label %loop
cleanup:
call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
unreachable
}
; TODO: figure out a way to eliminate this
define ptr @g(ptr %buffer, i32 %n) {
; CHECK-LABEL: @g(
; CHECK-NEXT: coro.return:
; CHECK-NEXT: [[TMP0:%.*]] = alloca swifterror ptr, align 4
; CHECK-NEXT: store i32 [[N:%.*]], ptr [[BUFFER:%.*]], align 4
; CHECK-NEXT: tail call void @print(i32 [[N]])
; CHECK-NEXT: store ptr null, ptr [[TMP0]], align 4
; CHECK-NEXT: call void @maybeThrow(ptr nonnull swifterror [[TMP0]])
; CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[TMP0]], align 4
; CHECK-NEXT: [[DOTSPILL_ADDR:%.*]] = getelementptr inbounds i8, ptr [[BUFFER]], i32 4
; CHECK-NEXT: store ptr [[TMP1]], ptr [[DOTSPILL_ADDR]], align 4
; CHECK-NEXT: call void @logError(ptr [[TMP1]])
; CHECK-NEXT: ret ptr @g.resume.0
;
entry:
%errorslot = alloca swifterror ptr, align 4
store ptr null, ptr %errorslot
%id = call token @llvm.coro.id.retcon(i32 8, i32 4, ptr %buffer, ptr @g_prototype, ptr @allocate, ptr @deallocate)
%hdl = call ptr @llvm.coro.begin(token %id, ptr null)
br label %loop
loop:
%n.val = phi i32 [ %n, %entry ], [ %inc, %resume ]
call void @print(i32 %n.val)
call void @maybeThrow(ptr swifterror %errorslot)
%errorload1 = load ptr, ptr %errorslot
call void @logError(ptr %errorload1)
%unwind0 = call i1 (...) @llvm.coro.suspend.retcon.i1()
br i1 %unwind0, label %cleanup, label %resume
resume:
%inc = add i32 %n.val, 1
br label %loop
cleanup:
call i1 @llvm.coro.end(ptr %hdl, i1 0, token none)
unreachable
}
declare token @llvm.coro.id.retcon(i32, i32, ptr, ptr, ptr, ptr)
declare ptr @llvm.coro.begin(token, ptr)
declare { i1, ptr } @llvm.coro.suspend.retcon.i1p0p0i8(...)
declare i1 @llvm.coro.suspend.retcon.i1(...)
declare i1 @llvm.coro.end(ptr, i1, token)
declare ptr @llvm.coro.prepare.retcon(ptr)
declare ptr @f_prototype(ptr, i1 zeroext, ptr swifterror)
declare ptr @g_prototype(ptr, i1 zeroext)
declare noalias ptr @allocate(i32 %size)
declare void @deallocate(ptr %ptr)
declare void @print(i32)
declare void @maybeThrow(ptr swifterror)
declare void @logError(ptr)
|
