1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py 2; RUN: opt < %s -passes=instcombine -S | FileCheck %s 3; RUN: opt < %s -passes=instcombine -S -data-layout=n32 | FileCheck %s 4; RUN: opt < %s -passes=instcombine -S -data-layout=n32:64 | FileCheck %s 5; RUN: opt < %s -passes=instcombine -S -data-layout=n32:64:128 | FileCheck %s 6 7declare void @llvm.memcpy.p0.p0.i32(ptr nocapture, ptr nocapture, i32, i1) nounwind 8 9; memcpy can be expanded inline with load/store (based on the datalayout?) 10 11define void @copy_1_byte(ptr %d, ptr %s) { 12; CHECK-LABEL: @copy_1_byte( 13; CHECK-NEXT: [[TMP1:%.*]] = load i8, ptr [[S:%.*]], align 1 14; CHECK-NEXT: store i8 [[TMP1]], ptr [[D:%.*]], align 1 15; CHECK-NEXT: ret void 16; 17 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 1, i1 false) 18 ret void 19} 20 21define void @copy_2_bytes(ptr %d, ptr %s) { 22; CHECK-LABEL: @copy_2_bytes( 23; CHECK-NEXT: [[TMP1:%.*]] = load i16, ptr [[S:%.*]], align 1 24; CHECK-NEXT: store i16 [[TMP1]], ptr [[D:%.*]], align 1 25; CHECK-NEXT: ret void 26; 27 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 2, i1 false) 28 ret void 29} 30 31; We don't expand small non-power-of-2. Should we? Might be a target-dependent choice. 32 33define void @copy_3_bytes(ptr %d, ptr %s) { 34; CHECK-LABEL: @copy_3_bytes( 35; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(3) [[D:%.*]], ptr noundef nonnull align 1 dereferenceable(3) [[S:%.*]], i32 3, i1 false) 36; CHECK-NEXT: ret void 37; 38 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 3, i1 false) 39 ret void 40} 41 42define void @copy_4_bytes(ptr %d, ptr %s) { 43; CHECK-LABEL: @copy_4_bytes( 44; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[S:%.*]], align 1 45; CHECK-NEXT: store i32 [[TMP1]], ptr [[D:%.*]], align 1 46; CHECK-NEXT: ret void 47; 48 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 4, i1 false) 49 ret void 50} 51 52; We don't expand small non-power-of-2. Should we? Might be a target-dependent choice. 53 54define void @copy_5_bytes(ptr %d, ptr %s) { 55; CHECK-LABEL: @copy_5_bytes( 56; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(5) [[D:%.*]], ptr noundef nonnull align 1 dereferenceable(5) [[S:%.*]], i32 5, i1 false) 57; CHECK-NEXT: ret void 58; 59 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 5, i1 false) 60 ret void 61} 62 63define void @copy_8_bytes(ptr %d, ptr %s) { 64; CHECK-LABEL: @copy_8_bytes( 65; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[S:%.*]], align 1 66; CHECK-NEXT: store i64 [[TMP1]], ptr [[D:%.*]], align 1 67; CHECK-NEXT: ret void 68; 69 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 8, i1 false) 70 ret void 71} 72 73define void @copy_16_bytes(ptr %d, ptr %s) { 74; CHECK-LABEL: @copy_16_bytes( 75; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i32(ptr noundef nonnull align 1 dereferenceable(16) [[D:%.*]], ptr noundef nonnull align 1 dereferenceable(16) [[S:%.*]], i32 16, i1 false) 76; CHECK-NEXT: ret void 77; 78 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 16, i1 false) 79 ret void 80} 81 82define void @copy_8_bytes_noalias(ptr %d, ptr %s) { 83; CHECK-LABEL: @copy_8_bytes_noalias( 84; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[S:%.*]], align 1, !alias.scope [[META0:![0-9]+]], !noalias [[META3:![0-9]+]] 85; CHECK-NEXT: store i64 [[TMP1]], ptr [[D:%.*]], align 1, !alias.scope [[META0]], !noalias [[META3]] 86; CHECK-NEXT: ret void 87; 88 call void @llvm.memcpy.p0.p0.i32(ptr %d, ptr %s, i32 8, i1 false), !alias.scope !4, !noalias !5 89 ret void 90} 91 92!0 = distinct !{!0, !"The domain"} 93!1 = distinct !{!1} 94!2 = !{!2, !0} 95!3 = !{!3, !1} 96!4 = !{!2} 97!5 = !{!3} 98