xref: /llvm-project/llvm/test/CodeGen/Hexagon/hvx-loopidiom-memcpy.ll (revision ef57977f2aa32661a09fa6538f47ddee0a004d11)
1; RUN: opt -march=hexagon -hexagon-loop-idiom -S < %s | FileCheck %s
2; RUN: opt -mtriple=hexagon-- -p hexagon-loop-idiom -disable-memcpy-idiom -S < %s | FileCheck %s
3
4; Make sure we don't convert load/store loops into memcpy if the access type
5; is a vector. Using vector instructions is generally better in such cases.
6
7; CHECK-NOT: @llvm.memcpy
8
9%s.0 = type { i32 }
10
11define void @f0(ptr noalias %a0, ptr noalias %a1) #0 align 2 {
12b0:
13  br i1 undef, label %b1, label %b2
14
15b1:                                               ; preds = %b1, %b0
16  %v0 = phi i32 [ %v7, %b1 ], [ 0, %b0 ]
17  %v1 = mul nuw nsw i32 %v0, 64
18  %v2 = getelementptr %s.0, ptr %a0, i32 %v1
19  %v3 = getelementptr %s.0, ptr %a1, i32 %v1
20  %v5 = load <64 x i32>, ptr %v2, align 256
21  store <64 x i32> %v5, ptr %v3, align 256
22  %v7 = add nuw nsw i32 %v0, 1
23  br i1 undef, label %b1, label %b2
24
25b2:                                               ; preds = %b1, %b0
26  ret void
27}
28
29attributes #0 = { "target-cpu"="hexagonv60" "target-features"="+hvx,+hvx-length64b" }
30