| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -memcpyopt -S -verify-memoryssa | FileCheck %s |
| |
| ; Check that a call featuring a scalable-vector byval argument fed by a memcpy |
| ; doesn't crash the compiler. It previously assumed the byval type's size could |
| ; be represented as a known constant amount. |
| define void @byval_caller(i8 *%P) { |
| ; CHECK-LABEL: @byval_caller( |
| ; CHECK-NEXT: [[A:%.*]] = alloca i8, align 1 |
| ; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 [[A]], i8* align 4 [[P:%.*]], i64 8, i1 false) |
| ; CHECK-NEXT: [[VA:%.*]] = bitcast i8* [[A]] to <vscale x 1 x i8>* |
| ; CHECK-NEXT: call void @byval_callee(<vscale x 1 x i8>* byval(<vscale x 1 x i8>) align 1 [[VA]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %a = alloca i8 |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4 %a, i8* align 4 %P, i64 8, i1 false) |
| %va = bitcast i8* %a to <vscale x 1 x i8>* |
| call void @byval_callee(<vscale x 1 x i8>* align 1 byval(<vscale x 1 x i8>) %va) |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* align 4, i8* align 4, i64, i1) |
| declare void @byval_callee(<vscale x 1 x i8>* align 1 byval(<vscale x 1 x i8>)) |
| |
| ; Check that two scalable-vector stores (overlapping, with a constant offset) |
| ; do not crash the compiler when checked whether or not they can be merged into |
| ; a single memset. There was previously an assumption that the stored values' |
| ; sizes could be represented by a known constant amount. |
| define void @merge_stores_both_scalable(<vscale x 1 x i8>* %ptr) { |
| ; CHECK-LABEL: @merge_stores_both_scalable( |
| ; CHECK-NEXT: store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: [[PTRI8:%.*]] = bitcast <vscale x 1 x i8>* [[PTR]] to i8* |
| ; CHECK-NEXT: [[PTR_NEXT:%.*]] = getelementptr i8, i8* [[PTRI8]], i64 1 |
| ; CHECK-NEXT: [[PTR_NEXT_2:%.*]] = bitcast i8* [[PTR_NEXT]] to <vscale x 1 x i8>* |
| ; CHECK-NEXT: store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* [[PTR_NEXT_2]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* %ptr |
| %ptri8 = bitcast <vscale x 1 x i8>* %ptr to i8* |
| %ptr.next = getelementptr i8, i8* %ptri8, i64 1 |
| %ptr.next.2 = bitcast i8* %ptr.next to <vscale x 1 x i8>* |
| store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* %ptr.next.2 |
| ret void |
| } |
| |
| ; As above, but where the base is scalable but the subsequent store(s) are not. |
| define void @merge_stores_first_scalable(<vscale x 1 x i8>* %ptr) { |
| ; CHECK-LABEL: @merge_stores_first_scalable( |
| ; CHECK-NEXT: store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: [[PTRI8:%.*]] = bitcast <vscale x 1 x i8>* [[PTR]] to i8* |
| ; CHECK-NEXT: [[PTR_NEXT:%.*]] = getelementptr i8, i8* [[PTRI8]], i64 1 |
| ; CHECK-NEXT: store i8 0, i8* [[PTR_NEXT]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* %ptr |
| %ptri8 = bitcast <vscale x 1 x i8>* %ptr to i8* |
| %ptr.next = getelementptr i8, i8* %ptri8, i64 1 |
| store i8 zeroinitializer, i8* %ptr.next |
| ret void |
| } |
| |
| ; As above, but where the base is not scalable but the subsequent store(s) are. |
| define void @merge_stores_second_scalable(i8* %ptr) { |
| ; CHECK-LABEL: @merge_stores_second_scalable( |
| ; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1 |
| ; CHECK-NEXT: [[PTR_NEXT:%.*]] = getelementptr i8, i8* [[PTR]], i64 1 |
| ; CHECK-NEXT: [[PTR_NEXT_2:%.*]] = bitcast i8* [[PTR_NEXT]] to <vscale x 1 x i8>* |
| ; CHECK-NEXT: store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* [[PTR_NEXT_2]], align 1 |
| ; CHECK-NEXT: ret void |
| ; |
| store i8 zeroinitializer, i8* %ptr |
| %ptr.next = getelementptr i8, i8* %ptr, i64 1 |
| %ptr.next.2 = bitcast i8* %ptr.next to <vscale x 1 x i8>* |
| store <vscale x 1 x i8> zeroinitializer, <vscale x 1 x i8>* %ptr.next.2 |
| ret void |
| } |
| |
| ; Check that the call-slot optimization doesn't crash when encountering scalable types. |
| define void @callslotoptzn(<vscale x 4 x float> %val, <vscale x 4 x float>* %out) { |
| ; CHECK-LABEL: @callslotoptzn( |
| ; CHECK-NEXT: [[ALLOC:%.*]] = alloca <vscale x 4 x float>, align 16 |
| ; CHECK-NEXT: [[IDX:%.*]] = tail call <vscale x 4 x i32> @llvm.experimental.stepvector.nxv4i32() |
| ; CHECK-NEXT: [[BALLOC:%.*]] = getelementptr inbounds <vscale x 4 x float>, <vscale x 4 x float>* [[ALLOC]], i64 0, i64 0 |
| ; CHECK-NEXT: [[STRIDE:%.*]] = getelementptr inbounds float, float* [[BALLOC]], <vscale x 4 x i32> [[IDX]] |
| ; CHECK-NEXT: call void @llvm.masked.scatter.nxv4f32.nxv4p0f32(<vscale x 4 x float> [[VAL:%.*]], <vscale x 4 x float*> [[STRIDE]], i32 4, <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i32 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer)) |
| ; CHECK-NEXT: [[LI:%.*]] = load <vscale x 4 x float>, <vscale x 4 x float>* [[ALLOC]], align 4 |
| ; CHECK-NEXT: store <vscale x 4 x float> [[LI]], <vscale x 4 x float>* [[OUT:%.*]], align 4 |
| ; CHECK-NEXT: ret void |
| ; |
| %alloc = alloca <vscale x 4 x float>, align 16 |
| %idx = tail call <vscale x 4 x i32> @llvm.experimental.stepvector.nxv4i32() |
| %balloc = getelementptr inbounds <vscale x 4 x float>, <vscale x 4 x float>* %alloc, i64 0, i64 0 |
| %stride = getelementptr inbounds float, float* %balloc, <vscale x 4 x i32> %idx |
| call void @llvm.masked.scatter.nxv4f32.nxv4p0f32(<vscale x 4 x float> %val, <vscale x 4 x float*> %stride, i32 4, <vscale x 4 x i1> shufflevector (<vscale x 4 x i1> insertelement (<vscale x 4 x i1> poison, i1 true, i32 0), <vscale x 4 x i1> poison, <vscale x 4 x i32> zeroinitializer)) |
| %li = load <vscale x 4 x float>, <vscale x 4 x float>* %alloc, align 4 |
| store <vscale x 4 x float> %li, <vscale x 4 x float>* %out, align 4 |
| ret void |
| } |
| |
| declare <vscale x 4 x i32> @llvm.experimental.stepvector.nxv4i32() |
| declare void @llvm.masked.scatter.nxv4f32.nxv4p0f32(<vscale x 4 x float> , <vscale x 4 x float*> , i32, <vscale x 4 x i1>) |