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
| # RUN: llc -mtriple=wasm32-unknown-unknown -exception-model=wasm -mattr=+exception-handling -run-pass wasm-late-eh-prepare -run-pass wasm-cfg-stackify %s -o - | FileCheck %s
# This tests 'try' and 'catch' instructions are correctly placed with respect to
# EH_LABEL instructions.
--- |
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
declare i32 @__gxx_wasm_personality_v0(...)
declare void @foo()
define void @eh_label_test() personality i8* bitcast (i32 (...)* @__gxx_wasm_personality_v0 to i8*) {
ret void
}
...
---
# CHECK-LABEL: eh_label_test
name: eh_label_test
liveins:
- { reg: '$arguments' }
body: |
bb.0:
; TRY should be before EH_LABEL wrappers of throwing calls
; CHECK: TRY
; CHECK-NEXT: EH_LABEL
; CHECK-NEXT: CALL_VOID @foo
; CHECK-NEXT: EH_LABEL
successors: %bb.1, %bb.2
EH_LABEL <mcsymbol .Ltmp0>
CALL_VOID @foo, implicit-def dead $arguments, implicit $sp32, implicit $sp64
EH_LABEL <mcsymbol .Ltmp1>
bb.1 (landing-pad):
; predecessors: %bb.0
successors: %bb.2
; CATCH should be after an EH_LABEL at the beginning of an EH pad
; CHECK: EH_LABEL
; CHECK-NEXT: CATCH
EH_LABEL <mcsymbol .Ltmp2>
dead %0:i32 = EXTRACT_EXCEPTION_I32 implicit-def dead $arguments
CATCHRET %bb.2, %bb.0, implicit-def dead $arguments
bb.2:
; predecessors: %bb.0, %bb.1
RETURN implicit-def dead $arguments
...
|