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
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
; RUN: opt -mtriple=riscv32-unknown-elf -S -passes=consthoist < %s | FileCheck %s
; RUN: opt -mtriple=riscv64-unknown-elf -S -passes=consthoist < %s | FileCheck %s
; Check that we don't hoist immediates with small values.
define i64 @test1(i64 %a) nounwind {
; CHECK-LABEL: test1
; CHECK-NOT: %const = bitcast i64 2 to i64
%1 = mul i64 %a, 2
%2 = add i64 %1, 2
ret i64 %2
}
; Check that we don't hoist immediates with small values.
define i64 @test2(i64 %a) nounwind {
; CHECK-LABEL: test2
; CHECK-NOT: %const = bitcast i64 2047 to i64
%1 = mul i64 %a, 2047
%2 = add i64 %1, 2047
ret i64 %2
}
; Check that we hoist immediates with large values.
define i64 @test3(i64 %a) nounwind {
; CHECK-LABEL: test3
; CHECK: %const = bitcast i64 32766 to i64
%1 = mul i64 %a, 32766
%2 = add i64 %1, 32766
ret i64 %2
}
; Check that we hoist immediates with very large values.
define i128 @test4(i128 %a) nounwind {
; CHECK-LABEL: test4
; CHECK: %const = bitcast i128 12297829382473034410122878 to i128
%1 = add i128 %a, 12297829382473034410122878
%2 = add i128 %1, 12297829382473034410122878
ret i128 %2
}
; Check that we hoist zext.h without Zbb.
define i32 @test5(i32 %a) nounwind {
; CHECK-LABEL: test5
; CHECK: %const = bitcast i32 65535 to i32
%1 = and i32 %a, 65535
%2 = and i32 %1, 65535
ret i32 %2
}
; Check that we don't hoist zext.h with 65535 with Zbb.
define i32 @test6(i32 %a) nounwind "target-features"="+zbb" {
; CHECK-LABEL: test6
; CHECK: and i32 %a, 65535
%1 = and i32 %a, 65535
%2 = and i32 %1, 65535
ret i32 %2
}
; Check that we hoist zext.w without Zba.
define i64 @test7(i64 %a) nounwind {
; CHECK-LABEL: test7
; CHECK: %const = bitcast i64 4294967295 to i64
%1 = and i64 %a, 4294967295
%2 = and i64 %1, 4294967295
ret i64 %2
}
; Check that we don't hoist zext.w with Zba.
define i64 @test8(i64 %a) nounwind "target-features"="+zba" {
; CHECK-LABEL: test8
; CHECK: and i64 %a, 4294967295
%1 = and i64 %a, 4294967295
%2 = and i64 %1, 4294967295
ret i64 %2
}
; Check that we don't hoist mul with negated power of 2.
define i64 @test9(i64 %a) nounwind {
; CHECK-LABEL: test9
; CHECK: mul i64 %a, -4294967296
%1 = mul i64 %a, -4294967296
%2 = mul i64 %1, -4294967296
ret i64 %2
}
define i32 @test10(i32 %a, i32 %b) nounwind {
; CHECK-LABEL: @test10(
; CHECK: shl i32 %a, 8
; CHECK: and i32 %1, 65280
; CHECK: shl i32 %b, 8
; CHECK: and i32 %3, 65280
%1 = shl i32 %a, 8
%2 = and i32 %1, 65280
%3 = shl i32 %b, 8
%4 = and i32 %3, 65280
%5 = mul i32 %2, %4
ret i32 %5
}
; bseti
define i64 @test11(i64 %a) nounwind "target-features"="+zbs" {
; CHECK-LABEL: test11
; CHECK: or i64 %a, 8589934592
%1 = or i64 %a, 8589934592 ; 1 << 33
%2 = or i64 %1, 8589934592 ; 1 << 33
ret i64 %2
}
; binvi
define i64 @test12(i64 %a) nounwind "target-features"="+zbs" {
; CHECK-LABEL: test12
; CHECK: xor i64 %a, -9223372036854775808
%1 = xor i64 %a, -9223372036854775808 ; 1 << 63
%2 = xor i64 %1, -9223372036854775808 ; 1 << 63
ret i64 %2
}
; bclri
define i64 @test13(i64 %a) nounwind "target-features"="+zbs" {
; CHECK-LABEL: test13
; CHECK: and i64 %a, -281474976710657
%1 = and i64 %a, -281474976710657 ; ~(1 << 48)
%2 = and i64 %1, -281474976710657 ; ~(1 << 48)
ret i64 %2
}
; Check that we don't hoist mul by a power of 2.
define i64 @test14(i64 %a) nounwind {
; CHECK-LABEL: test14
; CHECK: mul i64 %a, 2048
%1 = mul i64 %a, 2048
%2 = mul i64 %1, 2048
ret i64 %2
}
; Check that we don't hoist mul by one less than a power of 2.
define i64 @test15(i64 %a) nounwind {
; CHECK-LABEL: test15
; CHECK: mul i64 %a, 65535
%1 = mul i64 %a, 65535
%2 = mul i64 %1, 65535
ret i64 %2
}
; Check that we don't hoist mul by one more than a power of 2.
define i64 @test16(i64 %a) nounwind {
; CHECK-LABEL: test16
; CHECK: mul i64 %a, 65537
%1 = mul i64 %a, 65537
%2 = mul i64 %1, 65537
ret i64 %2
}
|
