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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx | 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-S128"
target triple = "x86_64-apple-macosx10.8.0"
; SLP vectorization example from http://cs.stanford.edu/people/eschkufz/research/asplos291-schkufza.pdf
define void @SAXPY(i32* noalias nocapture %x, i32* noalias nocapture %y, i32 %a, i64 %i) {
; CHECK-LABEL: @SAXPY(
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[X:%.*]], i64 [[I:%.*]]
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[Y:%.*]], i64 [[I]]
; CHECK-NEXT: [[TMP3:%.*]] = bitcast i32* [[TMP1]] to <4 x i32>*
; CHECK-NEXT: [[TMP4:%.*]] = load <4 x i32>, <4 x i32>* [[TMP3]], align 4
; CHECK-NEXT: [[TMP5:%.*]] = insertelement <4 x i32> poison, i32 [[A:%.*]], i32 0
; CHECK-NEXT: [[SHUFFLE:%.*]] = shufflevector <4 x i32> [[TMP5]], <4 x i32> poison, <4 x i32> zeroinitializer
; CHECK-NEXT: [[TMP6:%.*]] = mul nsw <4 x i32> [[TMP4]], [[SHUFFLE]]
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP2]] to <4 x i32>*
; CHECK-NEXT: [[TMP8:%.*]] = load <4 x i32>, <4 x i32>* [[TMP7]], align 4
; CHECK-NEXT: [[TMP9:%.*]] = add nsw <4 x i32> [[TMP6]], [[TMP8]]
; CHECK-NEXT: [[TMP10:%.*]] = bitcast i32* [[TMP1]] to <4 x i32>*
; CHECK-NEXT: store <4 x i32> [[TMP9]], <4 x i32>* [[TMP10]], align 4
; CHECK-NEXT: ret void
;
%1 = getelementptr inbounds i32, i32* %x, i64 %i
%2 = load i32, i32* %1, align 4
%3 = mul nsw i32 %2, %a
%4 = getelementptr inbounds i32, i32* %y, i64 %i
%5 = load i32, i32* %4, align 4
%6 = add nsw i32 %3, %5
store i32 %6, i32* %1, align 4
%7 = add i64 %i, 1
%8 = getelementptr inbounds i32, i32* %x, i64 %7
%9 = load i32, i32* %8, align 4
%10 = mul nsw i32 %9, %a
%11 = getelementptr inbounds i32, i32* %y, i64 %7
%12 = load i32, i32* %11, align 4
%13 = add nsw i32 %10, %12
store i32 %13, i32* %8, align 4
%14 = add i64 %i, 2
%15 = getelementptr inbounds i32, i32* %x, i64 %14
%16 = load i32, i32* %15, align 4
%17 = mul nsw i32 %16, %a
%18 = getelementptr inbounds i32, i32* %y, i64 %14
%19 = load i32, i32* %18, align 4
%20 = add nsw i32 %17, %19
store i32 %20, i32* %15, align 4
%21 = add i64 %i, 3
%22 = getelementptr inbounds i32, i32* %x, i64 %21
%23 = load i32, i32* %22, align 4
%24 = mul nsw i32 %23, %a
%25 = getelementptr inbounds i32, i32* %y, i64 %21
%26 = load i32, i32* %25, align 4
%27 = add nsw i32 %24, %26
store i32 %27, i32* %22, align 4
ret void
}
; Make sure we don't crash on this one.
define void @SAXPY_crash(i32* noalias nocapture %x, i32* noalias nocapture %y, i64 %i) {
; CHECK-LABEL: @SAXPY_crash(
; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[I:%.*]], 1
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds i32, i32* [[X:%.*]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, i32* [[Y:%.*]], i64 [[TMP1]]
; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <2 x i32>*
; CHECK-NEXT: [[TMP5:%.*]] = load <2 x i32>, <2 x i32>* [[TMP4]], align 4
; CHECK-NEXT: [[TMP6:%.*]] = add nsw <2 x i32> undef, [[TMP5]]
; CHECK-NEXT: [[TMP7:%.*]] = bitcast i32* [[TMP2]] to <2 x i32>*
; CHECK-NEXT: store <2 x i32> [[TMP6]], <2 x i32>* [[TMP7]], align 4
; CHECK-NEXT: ret void
;
%1 = add i64 %i, 1
%2 = getelementptr inbounds i32, i32* %x, i64 %1
%3 = getelementptr inbounds i32, i32* %y, i64 %1
%4 = load i32, i32* %3, align 4
%5 = add nsw i32 undef, %4
store i32 %5, i32* %2, align 4
%6 = add i64 %i, 2
%7 = getelementptr inbounds i32, i32* %x, i64 %6
%8 = getelementptr inbounds i32, i32* %y, i64 %6
%9 = load i32, i32* %8, align 4
%10 = add nsw i32 undef, %9
store i32 %10, i32* %7, align 4
ret void
}
|
