reduction.ll
7.31 KB
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
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -slp-vectorizer -dce -S -mtriple=i386-apple-macosx10.8.0 -mcpu=corei7-avx | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.8.0"
; int foo(double *A, int n, int m) {
; double sum = 0, v1 = 2, v0 = 3;
; for (int i=0; i < n; ++i)
; sum += 7*A[i*2] + 7*A[i*2+1];
; return sum;
; }
define i32 @reduce(double* nocapture %A, i32 %n, i32 %m) {
; CHECK-LABEL: @reduce(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP13:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP13]], label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[I_015:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT: [[SUM_014:%.*]] = phi double [ [[ADD6:%.*]], [[FOR_BODY]] ], [ 0.000000e+00, [[ENTRY]] ]
; CHECK-NEXT: [[MUL:%.*]] = shl nsw i32 [[I_015]], 1
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds double, double* [[A:%.*]], i32 [[MUL]]
; CHECK-NEXT: [[TMP0:%.*]] = bitcast double* [[ARRAYIDX]] to <2 x double>*
; CHECK-NEXT: [[TMP1:%.*]] = load <2 x double>, <2 x double>* [[TMP0]], align 4
; CHECK-NEXT: [[TMP2:%.*]] = fmul <2 x double> [[TMP1]], <double 7.000000e+00, double 7.000000e+00>
; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x double> [[TMP2]], i32 0
; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x double> [[TMP2]], i32 1
; CHECK-NEXT: [[ADD5:%.*]] = fadd double [[TMP3]], [[TMP4]]
; CHECK-NEXT: [[ADD6]] = fadd double [[SUM_014]], [[ADD5]]
; CHECK-NEXT: [[INC]] = add nsw i32 [[I_015]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[N]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_FOR_END_CRIT_EDGE:%.*]], label [[FOR_BODY]]
; CHECK: for.cond.for.end_crit_edge:
; CHECK-NEXT: [[PHITMP:%.*]] = fptosi double [[ADD6]] to i32
; CHECK-NEXT: br label [[FOR_END]]
; CHECK: for.end:
; CHECK-NEXT: [[SUM_0_LCSSA:%.*]] = phi i32 [ [[PHITMP]], [[FOR_COND_FOR_END_CRIT_EDGE]] ], [ 0, [[ENTRY]] ]
; CHECK-NEXT: ret i32 [[SUM_0_LCSSA]]
;
entry:
%cmp13 = icmp sgt i32 %n, 0
br i1 %cmp13, label %for.body, label %for.end
for.body: ; preds = %entry, %for.body
%i.015 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
%sum.014 = phi double [ %add6, %for.body ], [ 0.000000e+00, %entry ]
%mul = shl nsw i32 %i.015, 1
%arrayidx = getelementptr inbounds double, double* %A, i32 %mul
%0 = load double, double* %arrayidx, align 4
%mul1 = fmul double %0, 7.000000e+00
%add12 = or i32 %mul, 1
%arrayidx3 = getelementptr inbounds double, double* %A, i32 %add12
%1 = load double, double* %arrayidx3, align 4
%mul4 = fmul double %1, 7.000000e+00
%add5 = fadd double %mul1, %mul4
%add6 = fadd double %sum.014, %add5
%inc = add nsw i32 %i.015, 1
%exitcond = icmp eq i32 %inc, %n
br i1 %exitcond, label %for.cond.for.end_crit_edge, label %for.body
for.cond.for.end_crit_edge: ; preds = %for.body
%phitmp = fptosi double %add6 to i32
br label %for.end
for.end: ; preds = %for.cond.for.end_crit_edge, %entry
%sum.0.lcssa = phi i32 [ %phitmp, %for.cond.for.end_crit_edge ], [ 0, %entry ]
ret i32 %sum.0.lcssa
}
; FIXME: PR43948 - https://bugs.llvm.org/show_bug.cgi?id=43948
; The extra use of a non-vectorized element of a reduction must not be killed.
define i32 @horiz_max_multiple_uses([32 x i32]* %x, i32* %p) {
; CHECK-LABEL: @horiz_max_multiple_uses(
; CHECK-NEXT: [[X0:%.*]] = getelementptr [32 x i32], [32 x i32]* [[X:%.*]], i64 0, i64 0
; CHECK-NEXT: [[X4:%.*]] = getelementptr [32 x i32], [32 x i32]* [[X]], i64 0, i64 4
; CHECK-NEXT: [[X5:%.*]] = getelementptr [32 x i32], [32 x i32]* [[X]], i64 0, i64 5
; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[X0]] to <4 x i32>*
; CHECK-NEXT: [[TMP2:%.*]] = load <4 x i32>, <4 x i32>* [[TMP1]], align 4
; CHECK-NEXT: [[T4:%.*]] = load i32, i32* [[X4]], align 4
; CHECK-NEXT: [[T5:%.*]] = load i32, i32* [[X5]], align 4
; CHECK-NEXT: [[TMP3:%.*]] = call i32 @llvm.experimental.vector.reduce.smax.v4i32(<4 x i32> [[TMP2]])
; CHECK-NEXT: [[TMP4:%.*]] = icmp sgt i32 [[TMP3]], [[T4]]
; CHECK-NEXT: [[TMP5:%.*]] = select i1 [[TMP4]], i32 [[TMP3]], i32 [[T4]]
; CHECK-NEXT: [[C012345:%.*]] = icmp sgt i32 [[TMP5]], [[T5]]
; CHECK-NEXT: [[T17:%.*]] = select i1 [[C012345]], i32 [[TMP5]], i32 [[T5]]
; CHECK-NEXT: [[THREE_OR_FOUR:%.*]] = select i1 [[TMP4]], i32 3, i32 4
; CHECK-NEXT: store i32 [[THREE_OR_FOUR]], i32* [[P:%.*]], align 8
; CHECK-NEXT: ret i32 [[T17]]
;
%x0 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 0
%x1 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 1
%x2 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 2
%x3 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 3
%x4 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 4
%x5 = getelementptr [32 x i32], [32 x i32]* %x, i64 0, i64 5
%t0 = load i32, i32* %x0
%t1 = load i32, i32* %x1
%t2 = load i32, i32* %x2
%t3 = load i32, i32* %x3
%t4 = load i32, i32* %x4
%t5 = load i32, i32* %x5
%c01 = icmp sgt i32 %t0, %t1
%s5 = select i1 %c01, i32 %t0, i32 %t1
%c012 = icmp sgt i32 %s5, %t2
%t8 = select i1 %c012, i32 %s5, i32 %t2
%c0123 = icmp sgt i32 %t8, %t3
%rdx4 = select i1 %c0123, i32 %t8, i32 %t3
%MAX_ROOT_CMP = icmp sgt i32 %rdx4, %t4
%MAX_ROOT_SEL = select i1 %MAX_ROOT_CMP, i32 %rdx4, i32 %t4
%c012345 = icmp sgt i32 %MAX_ROOT_SEL, %t5
%t17 = select i1 %c012345, i32 %MAX_ROOT_SEL, i32 %t5
%three_or_four = select i1 %MAX_ROOT_CMP, i32 3, i32 4
store i32 %three_or_four, i32* %p, align 8
ret i32 %t17
}
; FIXME: This is a miscompile (see the undef operand) and/or test for invalid IR.
define i1 @bad_insertpoint_rdx([8 x i32]* %p) #0 {
; CHECK-LABEL: @bad_insertpoint_rdx(
; CHECK-NEXT: [[ARRAYIDX22:%.*]] = getelementptr inbounds [8 x i32], [8 x i32]* [[P:%.*]], i64 0, i64 0
; CHECK-NEXT: [[T0:%.*]] = load i32, i32* [[ARRAYIDX22]], align 16
; CHECK-NEXT: [[CMP23:%.*]] = icmp sgt i32 [[T0]], 0
; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP23]], i32 [[T0]], i32 0
; CHECK-NEXT: [[ARRAYIDX22_1:%.*]] = getelementptr inbounds [8 x i32], [8 x i32]* [[P]], i64 0, i64 1
; CHECK-NEXT: [[T1:%.*]] = load i32, i32* [[ARRAYIDX22_1]], align 4
; CHECK-NEXT: [[CMP23_1:%.*]] = icmp sgt i32 [[T1]], [[SPEC_SELECT]]
; CHECK-NEXT: [[SPEC_STORE_SELECT87:%.*]] = zext i1 [[CMP23_1]] to i32
; CHECK-NEXT: [[SPEC_SELECT88:%.*]] = select i1 [[CMP23_1]], i32 [[T1]], i32 [[SPEC_SELECT]]
; CHECK-NEXT: [[CMP23_2:%.*]] = icmp sgt i32 [[SPEC_STORE_SELECT87]], [[SPEC_SELECT88]]
; CHECK-NEXT: ret i1 [[CMP23_2]]
;
%arrayidx22 = getelementptr inbounds [8 x i32], [8 x i32]* %p, i64 0, i64 0
%t0 = load i32, i32* %arrayidx22, align 16
%cmp23 = icmp sgt i32 %t0, 0
%spec.select = select i1 %cmp23, i32 %t0, i32 0
%arrayidx22.1 = getelementptr inbounds [8 x i32], [8 x i32]* %p, i64 0, i64 1
%t1 = load i32, i32* %arrayidx22.1, align 4
%cmp23.1 = icmp sgt i32 %t1, %spec.select
%spec.store.select87 = zext i1 %cmp23.1 to i32
%spec.select88 = select i1 %cmp23.1, i32 %t1, i32 %spec.select
%cmp23.2 = icmp sgt i32 %spec.store.select87, %spec.select88
ret i1 %cmp23.2
}