| ; REQUIRES: asserts |
| ; RUN: opt < %s -force-vector-width=2 -force-vector-interleave=1 -loop-vectorize -S --debug-only=loop-vectorize 2>&1 | FileCheck %s |
| |
| ; This test shows extremely high interleaving cost that, probably, should be fixed. |
| ; Due to the high cost, interleaving is not beneficial and the cost model chooses to scalarize |
| ; the load instructions. |
| |
| target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128" |
| target triple = "aarch64--linux-gnu" |
| |
| %pair = type { i8, i8 } |
| |
| ; CHECK-LABEL: test |
| ; CHECK: Found an estimated cost of 20 for VF 2 For instruction: {{.*}} load i8 |
| ; CHECK: Found an estimated cost of 0 for VF 2 For instruction: {{.*}} load i8 |
| ; CHECK: vector.body |
| ; CHECK: load i8 |
| ; CHECK: br i1 {{.*}}, label %middle.block, label %vector.body |
| |
| define void @test(%pair* %p, i64 %n) { |
| entry: |
| br label %for.body |
| |
| for.body: |
| %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ] |
| %tmp0 = getelementptr %pair, %pair* %p, i64 %i, i32 0 |
| %tmp1 = load i8, i8* %tmp0, align 1 |
| %tmp2 = getelementptr %pair, %pair* %p, i64 %i, i32 1 |
| %tmp3 = load i8, i8* %tmp2, align 1 |
| %i.next = add nuw nsw i64 %i, 1 |
| %cond = icmp eq i64 %i.next, %n |
| br i1 %cond, label %for.end, label %for.body |
| |
| for.end: |
| ret void |
| } |
| |
