1 ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -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 @b = common global [2048 x i32] zeroinitializer, align 16 8 @c = common global [2048 x i32] zeroinitializer, align 16 9 10 ;CHECK-LABEL: @example1( 11 ;CHECK-NOT: load <4 x i32> 12 ;CHECK: ret void 13 define void @example1() nounwind uwtable ssp { 14 br label %1 15 16 ; <label>:1 ; preds = %1, %0 17 %indvars.iv = phi i64 [ 0, %0 ], [ %indvars.iv.next, %1 ] 18 %2 = getelementptr inbounds [2048 x i32]* @b, i64 0, i64 %indvars.iv 19 %3 = load i32* %2, align 4 20 %4 = getelementptr inbounds [2048 x i32]* @c, i64 0, i64 %indvars.iv 21 %5 = load i32* %4, align 4 22 %6 = add nsw i32 %5, %3 23 %7 = getelementptr inbounds [2048 x i32]* @a, i64 0, i64 %indvars.iv 24 store i32 %6, i32* %7, align 4 25 %indvars.iv.next = add i64 %indvars.iv, 1 26 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 27 %exitcond = icmp eq i32 %lftr.wideiv, 8 ; <----- A really small trip count. 28 br i1 %exitcond, label %8, label %1 29 30 ; <label>:8 ; preds = %1 31 ret void 32 } 33 34
