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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=rel-lookup-table-converter -mtriple=x86_64-linux -S | FileCheck %s
; RUN: opt < %s -passes=rel-lookup-table-converter -mtriple=i386-unknown-unknown -relocation-model=pic -S | FileCheck %s
; RUN: opt < %s -passes=rel-lookup-table-converter -mtriple=x86_64-linux -relocation-model=pic -code-model=medium -S | FileCheck %s
; RUN: opt < %s -passes=rel-lookup-table-converter -mtriple=x86_64-linux -relocation-model=pic -code-model=large -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
@.str = private unnamed_addr constant [5 x i8] c"zero\00", align 1
@.str.1 = private unnamed_addr constant [4 x i8] c"one\00", align 1
@.str.2 = private unnamed_addr constant [4 x i8] c"two\00", align 1
@.str.3 = private unnamed_addr constant [8 x i8] c"default\00", align 1
@switch.table.string_table = private unnamed_addr constant [3 x i8*]
[
i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0),
i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0),
i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0)
], align 8
; Switch lookup table
; CHECK: @switch.table.string_table = private unnamed_addr constant [3 x i8*]
; CHECK-SAME: [
; CHECK-SAME: i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str, i64 0, i64 0),
; CHECK-SAME: i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.1, i64 0, i64 0),
; CHECK-SAME: i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str.2, i64 0, i64 0)
; CHECK-SAME: ], align 8
; ; Relative switch lookup table for strings
define i8* @string_table(i32 %cond) {
; CHECK-LABEL: @string_table(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = icmp ult i32 [[COND:%.*]], 3
; CHECK-NEXT: br i1 [[TMP0]], label [[SWITCH_LOOKUP:%.*]], label [[RETURN:%.*]]
; CHECK: switch.lookup:
; CHECK-NEXT: [[SWITCH_GEP:%.*]] = getelementptr inbounds [3 x i8*], [3 x i8*]* @switch.table.string_table, i32 0, i32 [[COND]]
; CHECK-NEXT: [[SWITCH_LOAD:%.*]] = load i8*, i8** [[SWITCH_GEP]], align 8
; CHECK-NEXT: ret i8* [[SWITCH_LOAD]]
; CHECK: return:
; CHECK-NEXT: ret i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0)
entry:
%0 = icmp ult i32 %cond, 3
br i1 %0, label %switch.lookup, label %return
switch.lookup: ; preds = %entry
%switch.gep = getelementptr inbounds [3 x i8*], [3 x i8*]* @switch.table.string_table, i32 0, i32 %cond
%switch.load = load i8*, i8** %switch.gep, align 8
ret i8* %switch.load
return: ; preds = %entry
ret i8* getelementptr inbounds ([8 x i8], [8 x i8]* @.str.3, i64 0, i64 0)
}
|
