1 ; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 -dce -instcombine -S | FileCheck %s
2 ; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 -force-vector-interleave=0 -dce -instcombine -S | FileCheck %s -check-prefix=UNROLL
4 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"
5 target triple = "x86_64-apple-macosx10.8.0"
7 @b = common global [2048 x i32] zeroinitializer, align 16
8 @c = common global [2048 x i32] zeroinitializer, align 16
9 @a = common global [2048 x i32] zeroinitializer, align 16
12 ;CHECK-LABEL: @example1(
13 ;CHECK: load <4 x i32>
14 ;CHECK: add nsw <4 x i32>
15 ;CHECK: store <4 x i32>
18 ;UNROLL-LABEL: @example1(
19 ;UNROLL: load <4 x i32>
20 ;UNROLL: load <4 x i32>
21 ;UNROLL: add nsw <4 x i32>
22 ;UNROLL: add nsw <4 x i32>
23 ;UNROLL: store <4 x i32>
24 ;UNROLL: store <4 x i32>
26 define void @example1() nounwind uwtable ssp {
29 ; <label>:1 ; preds = %1, %0
30 %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ]
31 %2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %indvars.iv
32 %3 = load i32, i32* %2, align 4
33 %4 = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %indvars.iv
34 %5 = load i32, i32* %4, align 4
35 %6 = add nsw i32 %5, %3
36 %7 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %indvars.iv
37 store i32 %6, i32* %7, align 4
38 %indvars.iv.next = add i64 %indvars.iv, 1
39 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
40 %exitcond = icmp eq i32 %lftr.wideiv, 256
41 br i1 %exitcond, label %8, label %1
43 ; <label>:8 ; preds = %1
47 ; Select VF=4 because sext <8 x i1> to <8 x i32> is expensive.
48 ;CHECK-LABEL: @example10b(
49 ;CHECK: load <4 x i16>
50 ;CHECK: sext <4 x i16>
51 ;CHECK: store <4 x i32>
53 ;UNROLL-LABEL: @example10b(
54 ;UNROLL: load <4 x i16>
55 ;UNROLL: load <4 x i16>
56 ;UNROLL: store <4 x i32>
57 ;UNROLL: store <4 x i32>
59 define void @example10b(i16* noalias nocapture %sa, i16* noalias nocapture %sb, i16* noalias nocapture %sc, i32* noalias nocapture %ia, i32* noalias nocapture %ib, i32* noalias nocapture %ic) nounwind uwtable ssp {
62 ; <label>:1 ; preds = %1, %0
63 %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ]
64 %2 = getelementptr inbounds i16, i16* %sb, i64 %indvars.iv
65 %3 = load i16, i16* %2, align 2
66 %4 = sext i16 %3 to i32
67 %5 = getelementptr inbounds i32, i32* %ia, i64 %indvars.iv
68 store i32 %4, i32* %5, align 4
69 %indvars.iv.next = add i64 %indvars.iv, 1
70 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
71 %exitcond = icmp eq i32 %lftr.wideiv, 1024
72 br i1 %exitcond, label %6, label %1
74 ; <label>:6 ; preds = %1