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; RUN: opt -loop-vectorize -vectorizer-maximize-bandwidth -mcpu=corei7-avx -debug-only=loop-vectorize -S < %s 2>&1 | FileCheck %s
; REQUIRES: asserts
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@a = global [1000 x i8] zeroinitializer, align 16
@b = global [1000 x i8] zeroinitializer, align 16
@c = global [1000 x i8] zeroinitializer, align 16
@u = global [1000 x i32] zeroinitializer, align 16
@v = global [1000 x i32] zeroinitializer, align 16
@w = global [1000 x i32] zeroinitializer, align 16
; Tests that the vectorization factor is determined by the smallest instead of
; widest type in the loop for maximum bandwidth when
; -vectorizer-maximize-bandwidth is indicated.
;
; CHECK-label: foo
; CHECK: LV: Selecting VF: 16.
define void @foo() {
entry:
br label %for.body
for.cond.cleanup:
ret void
for.body:
%indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds [1000 x i8], [1000 x i8]* @b, i64 0, i64 %indvars.iv
%0 = load i8, i8* %arrayidx, align 1
%arrayidx2 = getelementptr inbounds [1000 x i8], [1000 x i8]* @c, i64 0, i64 %indvars.iv
%1 = load i8, i8* %arrayidx2, align 1
%add = add i8 %1, %0
%arrayidx6 = getelementptr inbounds [1000 x i8], [1000 x i8]* @a, i64 0, i64 %indvars.iv
store i8 %add, i8* %arrayidx6, align 1
%arrayidx8 = getelementptr inbounds [1000 x i32], [1000 x i32]* @v, i64 0, i64 %indvars.iv
%2 = load i32, i32* %arrayidx8, align 4
%arrayidx10 = getelementptr inbounds [1000 x i32], [1000 x i32]* @w, i64 0, i64 %indvars.iv
%3 = load i32, i32* %arrayidx10, align 4
%add11 = add nsw i32 %3, %2
%arrayidx13 = getelementptr inbounds [1000 x i32], [1000 x i32]* @u, i64 0, i64 %indvars.iv
store i32 %add11, i32* %arrayidx13, align 4
%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
%exitcond = icmp eq i64 %indvars.iv.next, 1000
br i1 %exitcond, label %for.cond.cleanup, label %for.body
}
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