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1; RUN: llc -mtriple=bpf -mcpu=v2 < %s | FileCheck -check-prefixes=CHECK,V2 %s2; RUN: llc -mtriple=bpf -mcpu=v4 < %s | FileCheck -check-prefixes=CHECK,V4 %s3 4; Verify that BPFMISimplifyPatchable::checkADDrr correctly rewrites5; load instructions.6;7; Generated from the following source code:8; struct t {9; unsigned char ub;10; unsigned short uh;11; unsigned int uw;12; unsigned long ud;13; } __attribute__((preserve_access_index));14;15; extern void cu(unsigned long);16;17; void bar(volatile struct t *t) {18; cu(t->ub);19; cu(t->uh);20; cu(t->uw);21; cu(t->ud);22; }23;24; Using the following command:25; clang -g -O2 -S -emit-llvm --target=bpf t.c -o t.ll26 27@"llvm.t:0:0$0:0" = external global i64, !llvm.preserve.access.index !0 #028@"llvm.t:0:2$0:1" = external global i64, !llvm.preserve.access.index !0 #029@"llvm.t:0:4$0:2" = external global i64, !llvm.preserve.access.index !0 #030@"llvm.t:0:8$0:3" = external global i64, !llvm.preserve.access.index !0 #031 32; Function Attrs: nounwind33define dso_local void @bar(ptr noundef %t) local_unnamed_addr #1 !dbg !18 {34entry:35 call void @llvm.dbg.value(metadata ptr %t, metadata !24, metadata !DIExpression()), !dbg !2536 %0 = load i64, ptr @"llvm.t:0:0$0:0", align 837 %1 = getelementptr i8, ptr %t, i64 %038 %2 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 0, ptr %1)39 %3 = load volatile i8, ptr %2, align 8, !dbg !26, !tbaa !2740 %conv = zext i8 %3 to i64, !dbg !3441 tail call void @cu(i64 noundef %conv) #5, !dbg !3542 %4 = load i64, ptr @"llvm.t:0:2$0:1", align 843 %5 = getelementptr i8, ptr %t, i64 %444 %6 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 1, ptr %5)45 %7 = load volatile i16, ptr %6, align 2, !dbg !36, !tbaa !3746 %conv1 = zext i16 %7 to i64, !dbg !3847 tail call void @cu(i64 noundef %conv1) #5, !dbg !3948 %8 = load i64, ptr @"llvm.t:0:4$0:2", align 849 %9 = getelementptr i8, ptr %t, i64 %850 %10 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 2, ptr %9)51 %11 = load volatile i32, ptr %10, align 4, !dbg !40, !tbaa !4152 %conv2 = zext i32 %11 to i64, !dbg !4253 tail call void @cu(i64 noundef %conv2) #5, !dbg !4354 %12 = load i64, ptr @"llvm.t:0:8$0:3", align 855 %13 = getelementptr i8, ptr %t, i64 %1256 %14 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 3, ptr %13)57 %15 = load volatile i64, ptr %14, align 8, !dbg !44, !tbaa !4558 tail call void @cu(i64 noundef %15) #5, !dbg !4659 ret void, !dbg !4760}61 62; CHECK: bar:63; CHECK: prologue_end64; CHECK-NEXT: .Ltmp[[LABEL_UB:.*]]:65; CHECK-NEXT: .Ltmp66; V2-NEXT: r1 = *(u8 *)(r6 + 0)67; V4-NEXT: w1 = *(u8 *)(r6 + 0)68; CHECK-NEXT: .loc69; CHECK-NEXT: .Ltmp70; CHECK-NEXT: call cu71; CHECK-NEXT: .Ltmp72; CHECK-NEXT: .loc73; CHECK-NEXT: .Ltmp[[LABEL_UH:.*]]:74; CHECK-NEXT: .Ltmp75; V2-NEXT: r1 = *(u16 *)(r6 + 2)76; V4-NEXT: w1 = *(u16 *)(r6 + 2)77; CHECK-NEXT: .loc78; CHECK-NEXT: .Ltmp79; CHECK-NEXT: call cu80; CHECK-NEXT: .Ltmp81; CHECK-NEXT: .loc82; CHECK-NEXT: .Ltmp[[LABEL_UW:.*]]:83; CHECK-NEXT: .Ltmp84; V2-NEXT: r1 = *(u32 *)(r6 + 4)85; V4-NEXT: w1 = *(u32 *)(r6 + 4)86; CHECK-NEXT: .loc87; CHECK-NEXT: .Ltmp88; CHECK-NEXT: call cu89; CHECK-NEXT: .Ltmp90; CHECK-NEXT: .loc91; CHECK-NEXT: .Ltmp[[LABEL_UD:.*]]:92; CHECK-NEXT: .Ltmp93; CHECK-NEXT: r1 = *(u64 *)(r6 + 8)94; CHECK-NEXT: .loc95; CHECK-NEXT: .Ltmp96; CHECK-NEXT: call cu97 98; CHECK: .section .BTF99; CHECK: .long [[STR_T:.*]] # BTF_KIND_STRUCT(id = [[ID:.*]])100 101; CHECK: .byte 116 # string offset=[[STR_T]]102; CHECK: .ascii "0:0" # string offset=[[STR_UB:.*]]103; CHECK: .ascii "0:1" # string offset=[[STR_UH:.*]]104; CHECK: .ascii "0:2" # string offset=[[STR_UW:.*]]105; CHECK: .ascii "0:3" # string offset=[[STR_UD:.*]]106 107; CHECK: # FieldReloc108; CHECK: .long .Ltmp[[LABEL_UB]]109; CHECK-NEXT: .long [[ID]]110; CHECK-NEXT: .long [[STR_UB]]111; CHECK-NEXT: .long 0112; CHECK: .long .Ltmp[[LABEL_UH]]113; CHECK-NEXT: .long [[ID]]114; CHECK-NEXT: .long [[STR_UH]]115; CHECK-NEXT: .long 0116; CHECK: .long .Ltmp[[LABEL_UW]]117; CHECK-NEXT: .long [[ID]]118; CHECK-NEXT: .long [[STR_UW]]119; CHECK-NEXT: .long 0120; CHECK: .long .Ltmp[[LABEL_UD]]121; CHECK-NEXT: .long [[ID]]122; CHECK-NEXT: .long [[STR_UD]]123; CHECK-NEXT: .long 0124 125declare !dbg !48 dso_local void @cu(i64 noundef) local_unnamed_addr #2126 127; Function Attrs: nofree nosync nounwind memory(none)128declare ptr @llvm.bpf.passthrough.p0.p0(i32, ptr) #3129 130; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)131declare void @llvm.dbg.value(metadata, metadata, metadata) #4132 133attributes #0 = { "btf_ama" }134attributes #1 = { nounwind "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }135attributes #2 = { "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" }136attributes #3 = { nofree nosync nounwind memory(none) }137attributes #4 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }138attributes #5 = { nounwind }139 140!llvm.dbg.cu = !{!11}141!llvm.module.flags = !{!12, !13, !14, !15, !16}142!llvm.ident = !{!17}143 144!0 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t", file: !1, line: 1, size: 128, elements: !2)145!1 = !DIFile(filename: "some.file", directory: "/some/dir", checksumkind: CSK_MD5, checksum: "d08c6eeba11118106c69a68932003da2")146!2 = !{!3, !5, !7, !9}147!3 = !DIDerivedType(tag: DW_TAG_member, name: "ub", scope: !0, file: !1, line: 2, baseType: !4, size: 8)148!4 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)149!5 = !DIDerivedType(tag: DW_TAG_member, name: "uh", scope: !0, file: !1, line: 3, baseType: !6, size: 16, offset: 16)150!6 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned)151!7 = !DIDerivedType(tag: DW_TAG_member, name: "uw", scope: !0, file: !1, line: 4, baseType: !8, size: 32, offset: 32)152!8 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned)153!9 = !DIDerivedType(tag: DW_TAG_member, name: "ud", scope: !0, file: !1, line: 5, baseType: !10, size: 64, offset: 64)154!10 = !DIBasicType(name: "unsigned long", size: 64, encoding: DW_ATE_unsigned)155!11 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 18.0.0 (/home/eddy/work/llvm-project/clang 3810f2eb4382d5e2090ce5cd47f45379cb453c35)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None)156!12 = !{i32 7, !"Dwarf Version", i32 5}157!13 = !{i32 2, !"Debug Info Version", i32 3}158!14 = !{i32 1, !"wchar_size", i32 4}159!15 = !{i32 7, !"frame-pointer", i32 2}160!16 = !{i32 7, !"debug-info-assignment-tracking", i1 true}161!17 = !{!"clang version 18.0.0 (/home/eddy/work/llvm-project/clang 3810f2eb4382d5e2090ce5cd47f45379cb453c35)"}162!18 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 20, type: !19, scopeLine: 20, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !11, retainedNodes: !23)163!19 = !DISubroutineType(types: !20)164!20 = !{null, !21}165!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64)166!22 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !0)167!23 = !{!24}168!24 = !DILocalVariable(name: "t", arg: 1, scope: !18, file: !1, line: 20, type: !21)169!25 = !DILocation(line: 0, scope: !18)170!26 = !DILocation(line: 21, column: 9, scope: !18)171!27 = !{!28, !29, i64 0}172!28 = !{!"t", !29, i64 0, !31, i64 2, !32, i64 4, !33, i64 8}173!29 = !{!"omnipotent char", !30, i64 0}174!30 = !{!"Simple C/C++ TBAA"}175!31 = !{!"short", !29, i64 0}176!32 = !{!"int", !29, i64 0}177!33 = !{!"long", !29, i64 0}178!34 = !DILocation(line: 21, column: 6, scope: !18)179!35 = !DILocation(line: 21, column: 3, scope: !18)180!36 = !DILocation(line: 22, column: 9, scope: !18)181!37 = !{!28, !31, i64 2}182!38 = !DILocation(line: 22, column: 6, scope: !18)183!39 = !DILocation(line: 22, column: 3, scope: !18)184!40 = !DILocation(line: 23, column: 9, scope: !18)185!41 = !{!28, !32, i64 4}186!42 = !DILocation(line: 23, column: 6, scope: !18)187!43 = !DILocation(line: 23, column: 3, scope: !18)188!44 = !DILocation(line: 24, column: 9, scope: !18)189!45 = !{!28, !33, i64 8}190!46 = !DILocation(line: 24, column: 3, scope: !18)191!47 = !DILocation(line: 25, column: 1, scope: !18)192!48 = !DISubprogram(name: "cu", scope: !1, file: !1, line: 10, type: !49, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !51)193!49 = !DISubroutineType(types: !50)194!50 = !{null, !10}195!51 = !{!52}196!52 = !DILocalVariable(arg: 1, scope: !48, file: !1, line: 10, type: !10)197