| ; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s |
| |
| 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" |
| target triple = "x86_64-apple-macosx10.9.0" |
| |
| ; Make sure we vectorize this loop: |
| ; int foo(float *a, float *b, int n) { |
| ; for (int i=0; i<n; ++i) |
| ; a[i] = b[i] * 3; |
| ; } |
| |
| ;CHECK: for.body.preheader: |
| ;CHECK: br i1 %cmp.zero, label %middle.block, label %vector.memcheck |
| ;CHECK: vector.memcheck: |
| ;CHECK: br i1 %found.conflict, label %middle.block, label %vector.ph |
| ;CHECK: load <4 x float> |
| define i32 @foo(float* nocapture %a, float* nocapture %b, i32 %n) nounwind uwtable ssp { |
| entry: |
| %cmp6 = icmp sgt i32 %n, 0 |
| br i1 %cmp6, label %for.body, label %for.end |
| |
| for.body: ; preds = %entry, %for.body |
| %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %entry ] |
| %arrayidx = getelementptr inbounds float* %b, i64 %indvars.iv |
| %0 = load float* %arrayidx, align 4 |
| %mul = fmul float %0, 3.000000e+00 |
| %arrayidx2 = getelementptr inbounds float* %a, i64 %indvars.iv |
| store float %mul, float* %arrayidx2, align 4 |
| %indvars.iv.next = add i64 %indvars.iv, 1 |
| %lftr.wideiv = trunc i64 %indvars.iv.next to i32 |
| %exitcond = icmp eq i32 %lftr.wideiv, %n |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| ret i32 undef |
| } |
