1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -instcombine -S | FileCheck %s
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-macosx10.9.0"
6 %struct.coordinate = type { i32, i32 }
8 ; Make sure that we don't generate a wide load when accessing the struct.
15 ; int foo(struct coordinate *A, int n) {
18 ; for (int i = 0; i < n; ++i)
25 ;CHECK-NOT: load <4 x i32>
27 define i32 @foo(%struct.coordinate* nocapture %A, i32 %n) nounwind uwtable readonly ssp {
29 %cmp4 = icmp sgt i32 %n, 0
30 br i1 %cmp4, label %for.body, label %for.end
32 for.body: ; preds = %entry, %for.body
33 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
34 %sum.05 = phi i32 [ %add, %for.body ], [ 0, %entry ]
35 %x = getelementptr inbounds %struct.coordinate* %A, i64 %indvars.iv, i32 0
36 %0 = load i32* %x, align 4
37 %add = add nsw i32 %0, %sum.05
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, %n
41 br i1 %exitcond, label %for.end, label %for.body
43 for.end: ; preds = %for.body, %entry
44 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]
48 %struct.lit = type { i32 }
50 ; Verify that we still vectorize the access if the struct has the same size as
57 ; int bar(struct lit *A, int n) {
60 ; for (int i = 0; i < n; ++i)
67 ;CHECK: load <4 x i32>
69 define i32 @bar(%struct.lit* nocapture %A, i32 %n) nounwind uwtable readonly ssp {
71 %cmp4 = icmp sgt i32 %n, 0
72 br i1 %cmp4, label %for.body, label %for.end
74 for.body: ; preds = %entry, %for.body
75 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ]
76 %sum.05 = phi i32 [ %add, %for.body ], [ 0, %entry ]
77 %x = getelementptr inbounds %struct.lit* %A, i64 %indvars.iv, i32 0
78 %0 = load i32* %x, align 4
79 %add = add nsw i32 %0, %sum.05
80 %indvars.iv.next = add i64 %indvars.iv, 1
81 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
82 %exitcond = icmp eq i32 %lftr.wideiv, %n
83 br i1 %exitcond, label %for.end, label %for.body
85 for.end: ; preds = %for.body, %entry
86 %sum.0.lcssa = phi i32 [ 0, %entry ], [ %add, %for.body ]