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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
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-v128:128:128-n32:64"
target triple = "powerpc64-unknown-linux-gnu"
; RUN: llc -ppc-gpr-icmps=all -verify-machineinstrs -O2 -ppc-asm-full-reg-names -mcpu=pwr7 -ppc-gen-isel=false < %s | FileCheck %s --implicit-check-not isel
define signext i32 @testExpandISELToIfElse(i32 signext %i, i32 signext %j) {
entry:
%cmp = icmp sgt i32 %i, 0
%add = add nsw i32 %i, 1
%cond = select i1 %cmp, i32 %add, i32 %j
ret i32 %cond
; CHECK-LABEL: @testExpandISELToIfElse
; CHECK: addi r5, r3, 1
; CHECK-NEXT: cmpwi r3, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK: ori r3, r4, 0
; CHECK-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r3, r5, 0
; CHECK-NEXT: [[SUCCESSOR]]
; CHECK-NEXT: extsw r3, r3
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELToIf(i32 signext %i, i32 signext %j) {
entry:
%cmp = icmp sgt i32 %i, 0
%cond = select i1 %cmp, i32 %j, i32 %i
ret i32 %cond
; CHECK-LABEL: @testExpandISELToIf
; CHECK: cmpwi r3, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK-NEXT: blr
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r3, r4, 0
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELToElse(i32 signext %i, i32 signext %j) {
entry:
%cmp = icmp sgt i32 %i, 0
%cond = select i1 %cmp, i32 %i, i32 %j
ret i32 %cond
; CHECK-LABEL: @testExpandISELToElse
; CHECK: cmpwi r3, 0
; CHECK-NEXT: bclr 12, gt, 0
; CHECK: ori r3, r4, 0
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELToNull(i32 signext %i, i32 signext %j) {
entry:
%cmp = icmp sgt i32 %i, 0
%cond = select i1 %cmp, i32 %i, i32 %i
ret i32 %cond
; CHECK-LABEL: @testExpandISELToNull
; CHECK-NOT: b {{.LBB[0-9]+}}
; CHECK-NOT: bc
; CHECK: blr
}
define signext i32 @testExpandISELsTo2ORIs2ADDIs
(i32 signext %a, i32 signext %b, i32 signext %d,
i32 signext %f, i32 signext %g) {
entry:
%cmp = icmp sgt i32 %g, 0
%a.b = select i1 %cmp, i32 %g, i32 %b
%d.f = select i1 %cmp, i32 %d, i32 %f
%add = add nsw i32 %a.b, %d.f
ret i32 %add
; CHECK-LABEL: @testExpandISELsTo2ORIs2ADDIs
; CHECK: cmpwi r7, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK: ori r3, r4, 0
; CHECK-NEXT: ori r4, r6, 0
; CHECK-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r3, r7, 0
; CHECK-NEXT: addi r4, r5, 0
; CHECK-NEXT: [[SUCCESSOR]]
; CHECK-NEXT: add r3, r3, r4
; CHECK-NEXT: extsw r3, r3
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELsTo2ORIs1ADDI
(i32 signext %a, i32 signext %b, i32 signext %d,
i32 signext %f, i32 signext %g) {
entry:
%cmp = icmp sgt i32 %g, 0
%a.b = select i1 %cmp, i32 %a, i32 %b
%d.f = select i1 %cmp, i32 %d, i32 %f
%add = add nsw i32 %a.b, %d.f
ret i32 %add
; CHECK-LABEL: @testExpandISELsTo2ORIs1ADDI
; CHECK: cmpwi r7, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK: ori r3, r4, 0
; CHECK-NEXT: ori r4, r6, 0
; CHECK-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r4, r5, 0
; CHECK-NEXT: [[SUCCESSOR]]
; CHECK-NEXT: add r3, r3, r4
; CHECK-NEXT: extsw r3, r3
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELsTo1ORI1ADDI
(i32 signext %a, i32 signext %b, i32 signext %d,
i32 signext %f, i32 signext %g) {
entry:
%cmp = icmp sgt i32 %g, 0
%a.b = select i1 %cmp, i32 %a, i32 %b
%d.f = select i1 %cmp, i32 %d, i32 %f
%add1 = add nsw i32 %a.b, %d.f
%add2 = add nsw i32 %a, %add1
ret i32 %add2
; CHECK-LABEL: @testExpandISELsTo1ORI1ADDI
; CHECK: cmpwi r7, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK: ori r5, r6, 0
; CHECK-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r4, r3, 0
; CHECK-NEXT: [[SUCCESSOR]]
; CHECK-NEXT: add r4, r4, r5
; CHECK-NEXT: add r3, r3, r4
; CHECK-NEXT: extsw r3, r3
; CHECK-NEXT: blr
}
define signext i32 @testExpandISELsTo0ORI2ADDIs
(i32 signext %a, i32 signext %b, i32 signext %d,
i32 signext %f, i32 signext %g) {
entry:
%cmp = icmp sgt i32 %g, 0
%a.b = select i1 %cmp, i32 %a, i32 %b
%d.f = select i1 %cmp, i32 %d, i32 %f
%add1 = add nsw i32 %a.b, %d.f
%add2 = add nsw i32 %a, %add1
%sub1 = sub nsw i32 %add2, %d
ret i32 %sub1
; CHECK-LABEL: @testExpandISELsTo0ORI2ADDIs
; CHECK: cmpwi r7, 0
; CHECK-NEXT: bc 12, gt, [[TRUE:.LBB[0-9]+]]
; CHECK-NEXT: b [[SUCCESSOR:.LBB[0-9]+]]
; CHECK-NEXT: [[TRUE]]
; CHECK-NEXT: addi r4, r3, 0
; CHECK-NEXT: addi r6, r5, 0
; CHECK-NEXT: [[SUCCESSOR]]
; CHECK-NEXT: add r4, r4, r6
; CHECK-NEXT: add r3, r3, r4
; CHECK-NEXT: sub r3, r3, r5
; CHECK-NEXT: extsw r3, r3
; CHECK-NEXT: blr
}
@b = local_unnamed_addr global i32 0, align 4
@a = local_unnamed_addr global i32 0, align 4
; Function Attrs: norecurse nounwind readonly
define signext i32 @testComplexISEL() #0 {
entry:
%0 = load i32, i32* @b, align 4, !tbaa !1
%tobool = icmp eq i32 %0, 0
br i1 %tobool, label %if.end, label %cleanup
if.end:
%1 = load i32, i32* @a, align 4, !tbaa !1
%conv = sext i32 %1 to i64
%2 = inttoptr i64 %conv to i32 (...)*
%cmp = icmp eq i32 (...)* %2, bitcast (i32 ()* @testComplexISEL to i32 (...)*)
%conv3 = zext i1 %cmp to i32
br label %cleanup
cleanup:
%retval.0 = phi i32 [ %conv3, %if.end ], [ 1, %entry ]
ret i32 %retval.0
; CHECK-LABEL: @testComplexISEL
; CHECK: cmplwi r3, 0
; CHECK: li r3, 1
; CHECK: beq cr0, [[TGT:.LBB[0-9_]+]]
; CHECK: clrldi r3, r3, 32
; CHECK: blr
; CHECK: [[TGT]]
; CHECK: xor [[XOR:r[0-9]+]]
; CHECK: cntlzd [[CZ:r[0-9]+]], [[XOR]]
; CHECK: rldicl [[SH:r[0-9]+]], [[CZ]], 58, 63
}
!1 = !{!2, !2, i64 0}
!2 = !{!"int", !3, i64 0}
!3 = !{!"omnipotent char", !4, i64 0}
!4 = !{!"Simple C/C++ TBAA"}
|
