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comparison test/CodeGen/X86/win32-seh-catchpad-realign.ll @ 95:afa8332a0e37 LLVM3.8

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LLVM 3.8
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Tue, 13 Oct 2015 17:48:58 +0900
parents
children 7d135dc70f03
comparison
equal deleted inserted replaced
84:f3e34b893a5f 95:afa8332a0e37
1 ; RUN: llc < %s | FileCheck %s
2
3 ; The aligned alloca means that we have to realign the stack, which forces the
4 ; use of ESI to address local variables.
5
6 target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
7 target triple = "i686--windows-msvc"
8
9 ; Function Attrs: nounwind
10 define void @realigned_try() personality i8* bitcast (i32 (...)* @_except_handler3 to i8*) {
11 entry:
12 %x = alloca [4 x i32], align 16
13 %arrayidx = getelementptr inbounds [4 x i32], [4 x i32]* %x, i32 0, i32 0
14 invoke void @useit(i32* %arrayidx)
15 to label %__try.cont unwind label %catch.dispatch
16
17 catch.dispatch: ; preds = %entry
18 %pad = catchpad [i8* bitcast (i32 ()* @"\01?filt$0@0@realigned_try@@" to i8*)]
19 to label %__except.ret unwind label %catchendblock
20
21 __except.ret: ; preds = %catch.dispatch
22 catchret %pad to label %__try.cont
23
24 __try.cont: ; preds = %entry, %__except.ret
25 ret void
26
27 catchendblock: ; preds = %catch.dispatch
28 catchendpad unwind to caller
29 }
30
31 ; Function Attrs: nounwind argmemonly
32
33 ; Function Attrs: nounwind
34 define internal i32 @"\01?filt$0@0@realigned_try@@"() {
35 entry:
36 ret i32 1
37 }
38
39 declare void @useit(i32*)
40
41 declare i32 @_except_handler3(...)
42
43 ; CHECK-LABEL: _realigned_try:
44 ; Prologue
45 ; CHECK: pushl %ebp
46 ; CHECK: movl %esp, %ebp
47 ; CHECK: pushl %ebx
48 ; CHECK: pushl %edi
49 ; CHECK: pushl %esi
50 ; CHECK: andl $-16, %esp
51 ; CHECK: subl $64, %esp
52 ; CHECK: movl %esp, %esi
53 ; Spill EBP
54 ; CHECK: movl %ebp, 12(%esi)
55 ; Spill ESP
56 ; CHECK: movl %esp, 36(%esi)
57 ; The state is stored at ESI+56, the end of the node is ESI+60.
58 ; CHECK: movl $-1, 56(%esi)
59 ;
60 ; __try
61 ; CHECK: calll _useit
62 ;
63 ; Epilogue
64 ; CHECK: LBB0_1: # %__try.cont
65 ; CHECK: leal -12(%ebp), %esp
66 ; CHECK: popl %esi
67 ; CHECK: popl %edi
68 ; CHECK: popl %ebx
69 ; CHECK: popl %ebp
70 ; CHECK: retl
71 ;
72 ; CHECK: LBB0_2: # %catch.dispatch
73 ; Restore ESP
74 ; CHECK: movl -24(%ebp), %esp
75 ; Recompute ESI by subtracting 60 from the end of the registration node.
76 ; CHECK: leal -60(%ebp), %esi
77 ; Restore EBP
78 ; CHECK: movl 12(%esi), %ebp
79 ; Rejoin normal control flow
80 ; CHECK: jmp LBB0_1