SwitchLowering.ll
2.28 KB
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
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=i686-- | FileCheck %s
; PR964
define i8* @FindChar(i8* %CurPtr) {
; CHECK-LABEL: FindChar:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: pushl %edi
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: pushl %esi
; CHECK-NEXT: .cfi_def_cfa_offset 12
; CHECK-NEXT: .cfi_offset %esi, -12
; CHECK-NEXT: .cfi_offset %edi, -8
; CHECK-NEXT: xorl %edi, %edi
; CHECK-NEXT: movl {{[0-9]+}}(%esp), %esi
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: .LBB0_1: # %bb
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movzbl (%esi,%edi), %eax
; CHECK-NEXT: incl %edi
; CHECK-NEXT: cmpb $120, %al
; CHECK-NEXT: je .LBB0_3
; CHECK-NEXT: # %bb.2: # %bb
; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
; CHECK-NEXT: testb %al, %al
; CHECK-NEXT: jne .LBB0_1
; CHECK-NEXT: .LBB0_3: # %bb7
; CHECK-NEXT: movzbl %al, %eax
; CHECK-NEXT: pushl %eax
; CHECK-NEXT: .cfi_adjust_cfa_offset 4
; CHECK-NEXT: calll foo
; CHECK-NEXT: addl $4, %esp
; CHECK-NEXT: .cfi_adjust_cfa_offset -4
; CHECK-NEXT: addl %edi, %esi
; CHECK-NEXT: movl %esi, %eax
; CHECK-NEXT: popl %esi
; CHECK-NEXT: .cfi_def_cfa_offset 8
; CHECK-NEXT: popl %edi
; CHECK-NEXT: .cfi_def_cfa_offset 4
; CHECK-NEXT: retl
entry:
br label %bb
bb: ; preds = %bb, %entry
%indvar = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=3]
%CurPtr_addr.0.rec = bitcast i32 %indvar to i32 ; <i32> [#uses=1]
%gep.upgrd.1 = zext i32 %indvar to i64 ; <i64> [#uses=1]
%CurPtr_addr.0 = getelementptr i8, i8* %CurPtr, i64 %gep.upgrd.1 ; <i8*> [#uses=1]
%tmp = load i8, i8* %CurPtr_addr.0 ; <i8> [#uses=3]
%tmp2.rec = add i32 %CurPtr_addr.0.rec, 1 ; <i32> [#uses=1]
%tmp2 = getelementptr i8, i8* %CurPtr, i32 %tmp2.rec ; <i8*> [#uses=1]
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
switch i8 %tmp, label %bb [
i8 0, label %bb7
i8 120, label %bb7
]
bb7: ; preds = %bb, %bb
tail call void @foo( i8 %tmp )
ret i8* %tmp2
}
declare void @foo(i8)