| ; RUN: opt -basic-aa -loop-idiom < %s -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" |
| |
| ;; memcpy.atomic formation (atomic load & store) -- element size 2 |
| ;; Will not create call due to a max element size of 0 |
| define void @test1(i64 %Size) nounwind ssp { |
| ; CHECK-LABEL: @test1( |
| ; CHECK-NOT: call void @llvm.memcpy.element.unordered.atomic |
| ; CHECK: store |
| ; CHECK: ret void |
| bb.nph: |
| %Base = alloca i16, i32 10000 |
| %Dest = alloca i16, i32 10000 |
| br label %for.body |
| |
| for.body: ; preds = %bb.nph, %for.body |
| %indvar = phi i64 [ 0, %bb.nph ], [ %indvar.next, %for.body ] |
| %I.0.014 = getelementptr i16, i16* %Base, i64 %indvar |
| %DestI = getelementptr i16, i16* %Dest, i64 %indvar |
| %V = load atomic i16, i16* %I.0.014 unordered, align 2 |
| store atomic i16 %V, i16* %DestI unordered, align 2 |
| %indvar.next = add i64 %indvar, 1 |
| %exitcond = icmp eq i64 %indvar.next, %Size |
| br i1 %exitcond, label %for.end, label %for.body |
| |
| for.end: ; preds = %for.body, %entry |
| ret void |
| } |