| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -loop-idiom < %s -S | FileCheck %s |
| |
| %struct.S = type { i32, i32, i8 } |
| |
| ; unsigned copy_noalias(S* __restrict a, S *b, int n) { |
| ; for (int i = 0; i < n; i++) { |
| ; a[i] = b[i]; |
| ; } |
| ; return sizeof(a[0]); |
| ; } |
| |
| ; Function Attrs: nofree nounwind uwtable mustprogress |
| define dso_local i32 @copy_noalias(%struct.S* noalias nocapture %a, %struct.S* nocapture readonly %b, i32 %n) local_unnamed_addr #0 { |
| ; CHECK-LABEL: @copy_noalias( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP7:%.*]] = icmp sgt i32 [[N:%.*]], 0 |
| ; CHECK-NEXT: br i1 [[CMP7]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]] |
| ; CHECK: for.body.preheader: |
| ; CHECK-NEXT: br label [[FOR_BODY:%.*]] |
| ; CHECK: for.cond.cleanup.loopexit: |
| ; CHECK-NEXT: br label [[FOR_COND_CLEANUP]] |
| ; CHECK: for.cond.cleanup: |
| ; CHECK-NEXT: ret i32 12 |
| ; CHECK: for.body: |
| ; CHECK-NEXT: [[I_08:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_BODY]] ], [ 0, [[FOR_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[IDXPROM:%.*]] = zext i32 [[I_08]] to i64 |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [[STRUCT_S:%.*]], %struct.S* [[B:%.*]], i64 [[IDXPROM]] |
| ; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [[STRUCT_S]], %struct.S* [[A:%.*]], i64 [[IDXPROM]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = bitcast %struct.S* [[ARRAYIDX2]] to i8* |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast %struct.S* [[ARRAYIDX]] to i8* |
| ; CHECK-NEXT: call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(12) [[TMP0]], i8* nonnull align 4 dereferenceable(12) [[TMP1]], i64 12, i1 false) |
| ; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_08]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[N]] |
| ; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]] |
| ; |
| entry: |
| %cmp7 = icmp sgt i32 %n, 0 |
| br i1 %cmp7, label %for.body.preheader, label %for.cond.cleanup |
| |
| for.body.preheader: ; preds = %entry |
| br label %for.body |
| |
| for.cond.cleanup.loopexit: ; preds = %for.body |
| br label %for.cond.cleanup |
| |
| for.cond.cleanup: ; preds = %for.cond.cleanup.loopexit, %entry |
| ret i32 12 |
| |
| for.body: ; preds = %for.body.preheader, %for.body |
| %i.08 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ] |
| %idxprom = zext i32 %i.08 to i64 |
| %arrayidx = getelementptr inbounds %struct.S, %struct.S* %b, i64 %idxprom |
| %arrayidx2 = getelementptr inbounds %struct.S, %struct.S* %a, i64 %idxprom |
| %0 = bitcast %struct.S* %arrayidx2 to i8* |
| %1 = bitcast %struct.S* %arrayidx to i8* |
| call void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(12) %0, i8* nonnull align 4 dereferenceable(12) %1, i64 12, i1 false) |
| %inc = add nuw nsw i32 %i.08, 1 |
| %cmp = icmp slt i32 %inc, %n |
| br i1 %cmp, label %for.body, label %for.cond.cleanup.loopexit |
| } |
| |
| ; Function Attrs: argmemonly nofree nosync nounwind willreturn |
| declare void @llvm.memcpy.inline.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) #1 |