1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals 2; RUN: opt -passes=instcombine -S < %s | FileCheck %s 3 4target 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-S128" 5 6declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind 7 8; Verify that instcombine preserves TBAA tags when converting a memcpy into 9; a scalar load and store. 10 11%struct.test1 = type { float } 12 13define void @test1(ptr nocapture %a, ptr nocapture %b) { 14; CHECK-LABEL: @test1( 15; CHECK-NEXT: entry: 16; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B:%.*]], align 4, !tbaa [[TBAA0:![0-9]+]] 17; CHECK-NEXT: store i32 [[TMP0]], ptr [[A:%.*]], align 4, !tbaa [[TBAA0]] 18; CHECK-NEXT: ret void 19; 20entry: 21 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !3 22 ret void 23} 24 25%struct.test2 = type { ptr } 26 27define ptr @test2() { 28; CHECK-LABEL: @test2( 29; CHECK-NEXT: store i1 true, ptr poison, align 1 30; CHECK-NEXT: ret ptr poison 31; 32 %tmp = alloca %struct.test2, align 8 33 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp, ptr align 8 undef, i64 8, i1 false), !tbaa.struct !4 34 %tmp3 = load ptr, ptr %tmp 35 ret ptr %tmp 36} 37 38define void @test3_multiple_fields(ptr nocapture %a, ptr nocapture %b) { 39; CHECK-LABEL: @test3_multiple_fields( 40; CHECK-NEXT: entry: 41; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[B:%.*]], align 4 42; CHECK-NEXT: store i64 [[TMP0]], ptr [[A:%.*]], align 4 43; CHECK-NEXT: ret void 44; 45entry: 46 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 8, i1 false), !tbaa.struct !6 47 ret void 48} 49 50define void @test4_multiple_copy_first_field(ptr nocapture %a, ptr nocapture %b) { 51; CHECK-LABEL: @test4_multiple_copy_first_field( 52; CHECK-NEXT: entry: 53; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B:%.*]], align 4, !tbaa [[TBAA0]] 54; CHECK-NEXT: store i32 [[TMP0]], ptr [[A:%.*]], align 4, !tbaa [[TBAA0]] 55; CHECK-NEXT: ret void 56; 57entry: 58 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !6 59 ret void 60} 61 62define void @test5_multiple_copy_more_than_first_field(ptr nocapture %a, ptr nocapture %b) { 63; CHECK-LABEL: @test5_multiple_copy_more_than_first_field( 64; CHECK-NEXT: entry: 65; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B:%.*]], align 4 66; CHECK-NEXT: store i32 [[TMP0]], ptr [[A:%.*]], align 4 67; CHECK-NEXT: ret void 68; 69entry: 70 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !7 71 ret void 72} 73 74!0 = !{!"Simple C/C++ TBAA"} 75!1 = !{!"omnipotent char", !0} 76!2 = !{!5, !5, i64 0} 77!3 = !{i64 0, i64 4, !2} 78!4 = !{i64 0, i64 8, null} 79!5 = !{!"float", !0} 80!6 = !{i64 0, i64 4, !2, i64 4, i64 4, !2} 81!7 = !{i64 0, i64 2, !2, i64 4, i64 6, !2} 82 83;. 84; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nounwind willreturn memory(argmem: readwrite) } 85;. 86; CHECK: [[TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0} 87; CHECK: [[META1]] = !{!"float", [[META2:![0-9]+]]} 88; CHECK: [[META2]] = !{!"Simple C/C++ TBAA"} 89;. 90