1 ; RUN: opt -basicaa -loop-distribute -enable-loop-distribute -verify-loop-info -verify-dom-info -S \
2 ; RUN: < %s | FileCheck %s
4 ; RUN: opt -basicaa -loop-distribute -enable-loop-distribute -loop-vectorize -force-vector-width=4 \
5 ; RUN: -verify-loop-info -verify-dom-info -S < %s | \
6 ; RUN: FileCheck --check-prefix=VECTORIZE %s
8 ; The memcheck version of basic.ll. We should distribute and vectorize the
9 ; second part of this loop with 5 memchecks (A+1 x {C, D, E} + C x {A, B})
11 ; for (i = 0; i < n; i++) {
12 ; A[i + 1] = A[i] * B[i];
13 ; -------------------------------
17 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
18 target triple = "x86_64-apple-macosx10.10.0"
20 @B = common global i32* null, align 8
21 @A = common global i32* null, align 8
22 @C = common global i32* null, align 8
23 @D = common global i32* null, align 8
24 @E = common global i32* null, align 8
28 %a = load i32*, i32** @A, align 8
29 %b = load i32*, i32** @B, align 8
30 %c = load i32*, i32** @C, align 8
31 %d = load i32*, i32** @D, align 8
32 %e = load i32*, i32** @E, align 8
35 ; We have two compares for each array overlap check.
36 ; Since the checks to A and A + 4 get merged, this will give us a
37 ; total of 8 compares.
39 ; CHECK: for.body.lver.check:
53 ; CHECK: br i1 %memcheck.conflict, label %for.body.ph.lver.orig, label %for.body.ph.ldist1
55 ; The non-distributed loop that the memchecks fall back on.
57 ; CHECK: for.body.ph.lver.orig:
58 ; CHECK: br label %for.body.lver.orig
59 ; CHECK: for.body.lver.orig:
60 ; CHECK: br i1 %exitcond.lver.orig, label %for.end, label %for.body.lver.orig
62 ; Verify the two distributed loops.
64 ; CHECK: for.body.ph.ldist1:
65 ; CHECK: br label %for.body.ldist1
66 ; CHECK: for.body.ldist1:
67 ; CHECK: %mulA.ldist1 = mul i32 %loadB.ldist1, %loadA.ldist1
68 ; CHECK: br i1 %exitcond.ldist1, label %for.body.ph, label %for.body.ldist1
71 ; CHECK: br label %for.body
73 ; CHECK: %mulC = mul i32 %loadD, %loadE
77 ; VECTORIZE: mul <4 x i32>
79 for.body: ; preds = %for.body, %entry
80 %ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
82 %arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
83 %loadA = load i32, i32* %arrayidxA, align 4
85 %arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
86 %loadB = load i32, i32* %arrayidxB, align 4
88 %mulA = mul i32 %loadB, %loadA
90 %add = add nuw nsw i64 %ind, 1
91 %arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
92 store i32 %mulA, i32* %arrayidxA_plus_4, align 4
94 %arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
95 %loadD = load i32, i32* %arrayidxD, align 4
97 %arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
98 %loadE = load i32, i32* %arrayidxE, align 4
100 %mulC = mul i32 %loadD, %loadE
102 %arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
103 store i32 %mulC, i32* %arrayidxC, align 4
105 %exitcond = icmp eq i64 %add, 20
106 br i1 %exitcond, label %for.end, label %for.body
108 for.end: ; preds = %for.body