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comparison test/Transforms/LoopVectorize/metadata-unroll.ll @ 0:95c75e76d11b LLVM3.4

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LLVM 3.4
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Thu, 12 Dec 2013 13:56:28 +0900
parents
children 54457678186b
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-1:000000000000 0:95c75e76d11b
1 ; RUN: opt < %s -loop-vectorize -force-vector-width=4 -dce -instcombine -S | FileCheck %s
2
3 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"
4 target triple = "x86_64-apple-macosx10.8.0"
5
6 @a = common global [2048 x i32] zeroinitializer, align 16
7
8 ; This is the loop.
9 ; for (i=0; i<n; i++){
10 ; a[i] += i;
11 ; }
12 ;CHECK-LABEL: @inc(
13 ;CHECK: load <4 x i32>
14 ;CHECK: load <4 x i32>
15 ;CHECK: add nsw <4 x i32>
16 ;CHECK: add nsw <4 x i32>
17 ;CHECK: store <4 x i32>
18 ;CHECK: store <4 x i32>
19 ;CHECK: ret void
20 define void @inc(i32 %n) nounwind uwtable noinline ssp {
21 %1 = icmp sgt i32 %n, 0
22 br i1 %1, label %.lr.ph, label %._crit_edge
23
24 .lr.ph: ; preds = %0, %.lr.ph
25 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
26 %2 = getelementptr inbounds [2048 x i32]* @a, i64 0, i64 %indvars.iv
27 %3 = load i32* %2, align 4
28 %4 = trunc i64 %indvars.iv to i32
29 %5 = add nsw i32 %3, %4
30 store i32 %5, i32* %2, align 4
31 %indvars.iv.next = add i64 %indvars.iv, 1
32 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
33 %exitcond = icmp eq i32 %lftr.wideiv, %n
34 br i1 %exitcond, label %._crit_edge, label %.lr.ph, !llvm.loop !0
35
36 ._crit_edge: ; preds = %.lr.ph, %0
37 ret void
38 }
39
40 !0 = metadata !{metadata !0, metadata !1}
41 !1 = metadata !{metadata !"llvm.vectorizer.unroll", i32 2}