; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 ; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -S %s | FileCheck %s define void @test_variable_stride(ptr %dst, i32 %scale) { ; CHECK-LABEL: define void @test_variable_stride ; CHECK-SAME: (ptr [[DST:%.*]], i32 [[SCALE:%.*]]) { ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] ; CHECK: vector.ph: ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] ; CHECK: vector.body: ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[INDEX]], 0 ; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[INDEX]], 1 ; CHECK-NEXT: [[TMP2:%.*]] = mul i32 [[TMP0]], [[SCALE]] ; CHECK-NEXT: [[TMP3:%.*]] = mul i32 [[TMP1]], [[SCALE]] ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i16, ptr [[DST]], i32 [[TMP2]] ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr i16, ptr [[DST]], i32 [[TMP3]] ; CHECK-NEXT: store i32 [[TMP0]], ptr [[TMP4]], align 2 ; CHECK-NEXT: store i32 [[TMP1]], ptr [[TMP5]], align 2 ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2 ; CHECK-NEXT: [[TMP6:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1000 ; CHECK-NEXT: br i1 [[TMP6]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]] ; CHECK: middle.block: ; CHECK-NEXT: br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]] ; CHECK: scalar.ph: ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] ; CHECK-NEXT: br label [[LOOP:%.*]] ; CHECK: loop: ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] ; CHECK-NEXT: [[IDX:%.*]] = mul i32 [[IV]], [[SCALE]] ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i16, ptr [[DST]], i32 [[IDX]] ; CHECK-NEXT: store i32 [[IV]], ptr [[GEP]], align 2 ; CHECK-NEXT: [[IV_NEXT]] = add i32 [[IV]], 1 ; CHECK-NEXT: [[EC:%.*]] = icmp eq i32 [[IV_NEXT]], 1000 ; CHECK-NEXT: br i1 [[EC]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP3:![0-9]+]] ; CHECK: exit: ; CHECK-NEXT: ret void ; entry: br label %loop loop: %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] %idx = mul i32 %iv, %scale %gep = getelementptr i16, ptr %dst, i32 %idx store i32 %iv, ptr %gep, align 2 %iv.next = add i32 %iv, 1 %ec = icmp eq i32 %iv.next, 1000 br i1 %ec, label %exit, label %loop exit: ret void }