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
|
;=========================== begin_copyright_notice ============================
;
; Copyright (C) 2022 Intel Corporation
;
; SPDX-License-Identifier: MIT
;
;============================ end_copyright_notice =============================
;
; RUN: igc_opt -igc-intdiv-red -S < %s | FileCheck %s
; ------------------------------------------------
; IntDivConstantReduction
; ------------------------------------------------
define spir_kernel void @test_div_1(i32 %src1) {
; CHECK-LABEL: @test_div_1(
; CHECK: call void @use.i32(i32 %src1)
; CHECK: ret void
;
%1 = udiv i32 %src1, 1
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_rem_1(i32 %src1) {
; CHECK-LABEL: @test_rem_1(
; CHECK: call void @use.i32(i32 0)
; CHECK: ret void
;
%1 = urem i32 %src1, 1
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_sdiv_neg1(i32 %src1) {
; CHECK-LABEL: @test_sdiv_neg1(
; CHECK: [[TMP1:%.*]] = sub i32 0, %src1
; CHECK: call void @use.i32(i32 [[TMP1]])
; CHECK: ret void
;
%1 = sdiv i32 %src1, -1
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_srem_neg1(i32 %src1) {
; CHECK-LABEL: @test_srem_neg1(
; CHECK: call void @use.i32(i32 0)
; CHECK: ret void
;
%1 = srem i32 %src1, -1
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_div_4(i32 %src1) {
; CHECK-LABEL: @test_div_4(
; CHECK: [[TMP1:%.*]] = lshr i32 %src1, 2
; CHECK: call void @use.i32(i32 [[TMP1]])
; CHECK: ret void
;
%1 = udiv i32 %src1, 4
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_sdiv_neg4(i32 %src1) {
; CHECK-LABEL: @test_sdiv_neg4(
; CHECK: [[IS_NEG:%.*]] = icmp slt i32 %src1, 0
; CHECK: br i1 [[IS_NEG]], label [[COND_ADD:%.*]], label [[COND_ADD_JOIN:%.*]]
; CHECK: cond-add:
; CHECK: [[SRC11:%.*]] = add i32 %src1, 3
; CHECK: br label [[COND_ADD_JOIN]]
; CHECK: cond-add-join:
; CHECK: [[SRC12:%.*]] = phi i32 [ %src1, [[TMP0:%.*]] ], [ [[SRC11]], [[COND_ADD]] ]
; CHECK: [[NEG_QOT:%.*]] = ashr i32 [[SRC12]], 2
; CHECK: [[QOT:%.*]] = sub i32 0, [[NEG_QOT]]
; CHECK: call void @use.i32(i32 [[QOT]])
; CHECK: ret void
;
%1 = sdiv i32 %src1, -4
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_sdiv_neg3(i32 %src1) {
; CHECK-LABEL: @test_sdiv_neg3(
; CHECK: [[Q_APPX:%.*]] = call i32 @llvm.genx.GenISA.imulH.i32(i32 %src1, i32 1431655765)
; CHECK: [[Q_APPX1:%.*]] = sub i32 [[Q_APPX]], %src1
; CHECK: [[Q_APPX2:%.*]] = ashr i32 [[Q_APPX1]], 1
; CHECK: [[TMP1:%.*]] = icmp slt i32 [[Q_APPX2]], 0
; CHECK: br i1 [[TMP1]], label [[COND_ADD:%.*]], label [[COND_ADD_JOIN:%.*]]
; CHECK: cond-add:
; CHECK: [[Q_APPX23:%.*]] = add i32 [[Q_APPX2]], 1
; CHECK: br label [[COND_ADD_JOIN]]
; CHECK: cond-add-join:
; CHECK: [[Q_APPX24:%.*]] = phi i32 [ [[Q_APPX2]], [[TMP0:%.*]] ], [ [[Q_APPX23]], [[COND_ADD]] ]
; CHECK: call void @use.i32(i32 [[Q_APPX24]])
; CHECK: ret void
;
%1 = sdiv i32 %src1, -3
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_div_3(i32 %src1) {
; CHECK-LABEL: @test_div_3(
; CHECK: [[Q_APPX:%.*]] = call i32 @llvm.genx.GenISA.umulH.i32(i32 %src1, i32 -1431655765)
; CHECK: [[Q_APPX1:%.*]] = lshr i32 [[Q_APPX]], 1
; CHECK: call void @use.i32(i32 [[Q_APPX1]])
; CHECK: ret void
;
%1 = udiv i32 %src1, 3
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_sdiv_max(i32 %src1) {
; CHECK-LABEL: @test_sdiv_max(
; CHECK: [[IS_NEG:%.*]] = icmp slt i32 %src1, 0
; CHECK: br i1 [[IS_NEG]], label [[COND_ADD:%.*]], label [[COND_ADD_JOIN:%.*]]
; CHECK: cond-add:
; CHECK: [[SRC11:%.*]] = add i32 %src1, 2147483647
; CHECK: br label [[COND_ADD_JOIN]]
; CHECK: cond-add-join:
; CHECK: [[SRC12:%.*]] = phi i32 [ %src1, [[TMP0:%.*]] ], [ [[SRC11]], [[COND_ADD]] ]
; CHECK: [[NEG_QOT:%.*]] = ashr i32 [[SRC12]], 31
; CHECK: [[QOT:%.*]] = sub i32 0, [[NEG_QOT]]
; CHECK: call void @use.i32(i32 [[QOT]])
; CHECK: ret void
;
%1 = sdiv i32 %src1, -2147483648
call void @use.i32(i32 %1)
ret void
}
define spir_kernel void @test_udiv_max(i32 %src1) {
; CHECK-LABEL: @test_udiv_max(
; CHECK: [[Q_APPX:%.*]] = call i32 @llvm.genx.GenISA.umulH.i32(i32 %src1, i32 -2147483647)
; CHECK: [[Q_APPX1:%.*]] = lshr i32 [[Q_APPX]], 31
; CHECK: call void @use.i32(i32 [[Q_APPX1]])
; CHECK: ret void
;
%1 = udiv i32 %src1, 4294967295
call void @use.i32(i32 %1)
ret void
}
declare void @use.i32(i32)
|
