1; RUN: opt < %s -loop-vectorize -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7-avx -S | FileCheck %s 2 3target 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" 4target triple = "x86_64-apple-macosx10.8.0" 5 6@c = common global [2048 x i32] zeroinitializer, align 16 7@b = common global [2048 x i32] zeroinitializer, align 16 8@d = common global [2048 x i32] zeroinitializer, align 16 9@a = common global [2048 x i32] zeroinitializer, align 16 10 11; The program below gathers and scatters data. We better not vectorize it. 12;CHECK-LABEL: @cost_model_1( 13;CHECK-NOT: <2 x i32> 14;CHECK-NOT: <4 x i32> 15;CHECK-NOT: <8 x i32> 16;CHECK: ret void 17define void @cost_model_1() nounwind uwtable noinline ssp { 18entry: 19 br label %for.body 20 21for.body: ; preds = %for.body, %entry 22 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ] 23 %0 = shl nsw i64 %indvars.iv, 1 24 %arrayidx = getelementptr inbounds [2048 x i32], [2048 x i32]* @c, i64 0, i64 %0 25 %1 = load i32, i32* %arrayidx, align 8 26 %idxprom1 = sext i32 %1 to i64 27 %arrayidx2 = getelementptr inbounds [2048 x i32], [2048 x i32]* @b, i64 0, i64 %idxprom1 28 %2 = load i32, i32* %arrayidx2, align 4 29 %arrayidx4 = getelementptr inbounds [2048 x i32], [2048 x i32]* @d, i64 0, i64 %indvars.iv 30 %3 = load i32, i32* %arrayidx4, align 4 31 %idxprom5 = sext i32 %3 to i64 32 %arrayidx6 = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %idxprom5 33 store i32 %2, i32* %arrayidx6, align 4 34 %indvars.iv.next = add i64 %indvars.iv, 1 35 %lftr.wideiv = trunc i64 %indvars.iv.next to i32 36 %exitcond = icmp eq i32 %lftr.wideiv, 256 37 br i1 %exitcond, label %for.end, label %for.body 38 39for.end: ; preds = %for.body 40 ret void 41} 42