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
|
; Verifies that we can insert the spill for a PHI preceding the catchswitch
; RUN: opt < %s -coro-split -S | FileCheck %s
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
target triple = "i686-pc-windows-msvc"
; CHECK-LABEL: define void @f(
define void @f(i1 %cond) "coroutine.presplit"="1" personality i32 0 {
entry:
%id = call token @llvm.coro.id(i32 8, i8* null, i8* null, i8* null)
%size = call i32 @llvm.coro.size.i32()
%alloc = call i8* @malloc(i32 %size)
%hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
br i1 %cond, label %if.else, label %if.then
if.then:
invoke void @may_throw1()
to label %coro.ret unwind label %catch.dispatch
if.else:
invoke void @may_throw2()
to label %coro.ret unwind label %catch.dispatch
catch.dispatch: ; preds = %if.else, %if.then
%val = phi i32 [ 1, %if.then ], [ 2, %if.else ]
%switch = catchswitch within none [label %catch] unwind label %cleanuppad
; Verifies that we split out the PHI into a separate block
; added a cleanuppad spill cleanupret unwinding into the catchswitch.
; CHECK: catch.dispatch:
; CHECK: %val = phi i32 [ 2, %if.else ], [ 1, %if.then ]
; CHECK: %[[Pad:.+]] = cleanuppad within none []
; CHECK: %val.spill.addr = getelementptr inbounds %f.Frame, %f.Frame* %FramePtr, i32 0, i32 4
; CHECK: store i32 %val, i32* %val.spill.addr
; CHECK: cleanupret from %[[Pad]] unwind label %[[Switch:.+]]
; CHECK: [[Switch]]:
; CHECK: %switch = catchswitch within none [label %catch] unwind to caller
catch: ; preds = %catch.dispatch
%pad = catchpad within %switch [i8* null, i32 64, i8* null]
catchret from %pad to label %suspend
suspend:
%sp = call i8 @llvm.coro.suspend(token none, i1 false)
switch i8 %sp, label %coro.ret [
i8 0, label %resume
i8 1, label %coro.ret
]
resume: ; preds = %await2.suspend
call void @print(i32 %val)
br label %coro.ret
coro.ret:
call i1 @llvm.coro.end(i8* %hdl, i1 0)
ret void
cleanuppad:
%cpad = cleanuppad within none []
cleanupret from %cpad unwind to caller
}
; Function Attrs: argmemonly nounwind readonly
declare token @llvm.coro.id(i32, i8* readnone, i8* nocapture readonly, i8*) #1
; Function Attrs: nounwind
declare i1 @llvm.coro.alloc(token) #2
; Function Attrs: nobuiltin
declare i32 @llvm.coro.size.i32() #4
declare i8* @llvm.coro.begin(token, i8* writeonly) #2
declare token @llvm.coro.save(i8*)
declare i8 @llvm.coro.suspend(token, i1)
declare void @may_throw1()
declare void @may_throw2()
declare void @print(i32)
declare noalias i8* @malloc(i32)
declare void @free(i8*)
declare i1 @llvm.coro.end(i8*, i1) #2
; Function Attrs: nobuiltin nounwind
; Function Attrs: argmemonly nounwind readonly
declare i8* @llvm.coro.free(token, i8* nocapture readonly) #1
|
