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
| ; RUN: opt %loadPolly -polly-codegen -polly-vectorizer=polly -S < %s | FileCheck %s
; ModuleID = 'reverse.c'
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
;int A[100];
;void foo() {
; for (int i=3; i >= 0; i--)
; A[i]+=1;
;}
@A = common global [100 x i32] zeroinitializer, align 16
; Function Attrs: nounwind uwtable
define void @foo() #0 {
entry:
br label %for.body
for.body: ; preds = %entry, %for.body
%indvars.iv = phi i64 [ 3, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds [100 x i32], [100 x i32]* @A, i64 0, i64 %indvars.iv
%0 = load i32, i32* %arrayidx, align 4
%add = add nsw i32 %0, 1
store i32 %add, i32* %arrayidx, align 4
%indvars.iv.next = add nsw i64 %indvars.iv, -1
%1 = trunc i64 %indvars.iv to i32
%cmp = icmp sgt i32 %1, 0
br i1 %cmp, label %for.body, label %for.end
for.end: ; preds = %for.body
ret void
}
; CHECK: @foo
; CHECK: [[LOAD:%[a-zA-Z0-9_]+]] = load <4 x i32>, <4 x i32>*
; CHECK: [[REVERSE_LOAD:%[a-zA-Z0-9_]+reverse]] = shufflevector <4 x i32> [[LOAD]], <4 x i32> [[LOAD]], <4 x i32> <i32 3, i32 2, i32 1, i32 0>
|