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
|
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
; RUN: llc -mtriple riscv64 < %s | FileCheck %s
declare signext i32 @func1(ptr noundef) local_unnamed_addr
declare signext i32 @func2(ptr noundef) local_unnamed_addr
declare signext i32 @func3(ptr noundef) local_unnamed_addr
declare signext i32 @func4(ptr noundef) local_unnamed_addr
declare signext i32 @func5(ptr noundef) local_unnamed_addr
declare signext i32 @default_func(ptr noundef) local_unnamed_addr
define dso_local signext i32 @test_shrinkwrap_jump_table(ptr noundef %m) local_unnamed_addr {
; CHECK-LABEL: test_shrinkwrap_jump_table:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: lw a1, 0(a0)
; CHECK-NEXT: addi a1, a1, -1
; CHECK-NEXT: li a2, 4
; CHECK-NEXT: bltu a2, a1, .LBB0_3
; CHECK-NEXT: # %bb.1: # %entry
; CHECK-NEXT: slli a1, a1, 2
; CHECK-NEXT: lui a2, %hi(.LJTI0_0)
; CHECK-NEXT: addi a2, a2, %lo(.LJTI0_0)
; CHECK-NEXT: add a1, a1, a2
; CHECK-NEXT: lw a1, 0(a1)
; CHECK-NEXT: jr a1
; CHECK-NEXT: .LBB0_2: # %sw.bb
; CHECK-NEXT: tail func1@plt
; CHECK-NEXT: .LBB0_3: # %sw.default
; CHECK-NEXT: addi sp, sp, -16
; CHECK-NEXT: .cfi_def_cfa_offset 16
; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
; CHECK-NEXT: .cfi_offset ra, -8
; CHECK-NEXT: call default_func@plt
; CHECK-NEXT: li a0, 0
; CHECK-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
; CHECK-NEXT: addi sp, sp, 16
; CHECK-NEXT: ret
; CHECK-NEXT: .LBB0_4: # %sw.bb1
; CHECK-NEXT: tail func2@plt
; CHECK-NEXT: .LBB0_5: # %sw.bb3
; CHECK-NEXT: tail func3@plt
; CHECK-NEXT: .LBB0_6: # %sw.bb5
; CHECK-NEXT: tail func4@plt
; CHECK-NEXT: .LBB0_7: # %sw.bb7
; CHECK-NEXT: tail func5@plt
entry:
%0 = load i32, ptr %m, align 4
switch i32 %0, label %sw.default [
i32 1, label %sw.bb
i32 2, label %sw.bb1
i32 3, label %sw.bb3
i32 4, label %sw.bb5
i32 5, label %sw.bb7
]
sw.bb:
%call = tail call signext i32 @func1(ptr noundef nonnull %m)
br label %sw.epilog
sw.bb1:
%call2 = tail call signext i32 @func2(ptr noundef nonnull %m)
br label %sw.epilog
sw.bb3:
%call4 = tail call signext i32 @func3(ptr noundef nonnull %m)
br label %sw.epilog
sw.bb5:
%call6 = tail call signext i32 @func4(ptr noundef nonnull %m)
br label %sw.epilog
sw.bb7:
%call8 = tail call signext i32 @func5(ptr noundef nonnull %m)
br label %sw.epilog
sw.default:
%call9 = tail call signext i32 @default_func(ptr noundef nonnull %m)
br label %sw.epilog
sw.epilog:
%ret.0 = phi i32 [ 0, %sw.default ], [ %call8, %sw.bb7 ], [ %call6, %sw.bb5 ], [ %call4, %sw.bb3 ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
ret i32 %ret.0
}
|
