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
83
84
85
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -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"
define i32 @test1(i32 %x) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 16
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 65535
%tmp.2 = xor i32 %tmp.1, -32768
%tmp.3 = add i32 %tmp.2, 32768
ret i32 %tmp.3
}
define i32 @test2(i32 %x) {
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 16
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 65535
%tmp.2 = xor i32 %tmp.1, 32768
%tmp.3 = add i32 %tmp.2, -32768
ret i32 %tmp.3
}
define i32 @test3(i16 %P) {
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[TMP_5:%.*]] = sext i16 %P to i32
; CHECK-NEXT: ret i32 [[TMP_5]]
;
%tmp.1 = zext i16 %P to i32
%tmp.4 = xor i32 %tmp.1, 32768
%tmp.5 = add i32 %tmp.4, -32768
ret i32 %tmp.5
}
define i32 @test4(i32 %x) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[SEXT:%.*]] = shl i32 %x, 24
; CHECK-NEXT: [[TMP_3:%.*]] = ashr exact i32 [[SEXT]], 24
; CHECK-NEXT: ret i32 [[TMP_3]]
;
%tmp.1 = and i32 %x, 255
%tmp.2 = xor i32 %tmp.1, 128
%tmp.3 = add i32 %tmp.2, -128
ret i32 %tmp.3
}
define i32 @test5(i32 %x) {
; CHECK-LABEL: @test5(
; CHECK-NEXT: [[TMP_2:%.*]] = shl i32 %x, 16
; CHECK-NEXT: [[TMP_4:%.*]] = ashr exact i32 [[TMP_2]], 16
; CHECK-NEXT: ret i32 [[TMP_4]]
;
%tmp.2 = shl i32 %x, 16
%tmp.4 = ashr i32 %tmp.2, 16
ret i32 %tmp.4
}
define i32 @test6(i16 %P) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: [[TMP_5:%.*]] = sext i16 %P to i32
; CHECK-NEXT: ret i32 [[TMP_5]]
;
%tmp.1 = zext i16 %P to i32
%sext1 = shl i32 %tmp.1, 16
%tmp.5 = ashr i32 %sext1, 16
ret i32 %tmp.5
}
define i32 @test7(i32 %x) {
; CHECK-LABEL: @test7(
; CHECK-NEXT: [[SUB:%.*]] = ashr i32 %x, 5
; CHECK-NEXT: ret i32 [[SUB]]
;
%shr = lshr i32 %x, 5
%xor = xor i32 %shr, 67108864
%sub = add i32 %xor, -67108864
ret i32 %sub
}
|
