| ; RUN: llc -march=bpfel -mcpu=v4 < %s | FileCheck %s |
| |
| ; Make sure that CO-RE relocations had been generated correctly for |
| ; BPF_ST (store immediate) instructions and that |
| ; BPFMISimplifyPatchable optimizations had been applied. |
| ; |
| ; Generated from the following source code: |
| ; |
| ; #define __pai __attribute__((preserve_access_index)) |
| ; |
| ; struct foo { |
| ; unsigned char b; |
| ; unsigned short h; |
| ; unsigned int w; |
| ; unsigned long d; |
| ; } __pai; |
| ; |
| ; void bar(volatile struct foo *p) { |
| ; p->b = 1; |
| ; p->h = 2; |
| ; p->w = 3; |
| ; p->d = 4; |
| ; } |
| ; |
| ; Using the following command: |
| ; |
| ; clang -g -O2 -S -emit-llvm -mcpu=v4 --target=bpfel test.c |
| |
| target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n32:64-S128" |
| |
| @"llvm.foo:0:0$0:0" = external global i64, !llvm.preserve.access.index !0 #0 |
| @"llvm.foo:0:2$0:1" = external global i64, !llvm.preserve.access.index !0 #0 |
| @"llvm.foo:0:4$0:2" = external global i64, !llvm.preserve.access.index !0 #0 |
| @"llvm.foo:0:8$0:3" = external global i64, !llvm.preserve.access.index !0 #0 |
| |
| ; Function Attrs: nofree nounwind |
| define dso_local void @bar(ptr noundef %p) local_unnamed_addr #1 !dbg !18 { |
| entry: |
| call void @llvm.dbg.value(metadata ptr %p, metadata !24, metadata !DIExpression()), !dbg !25 |
| %0 = load i64, ptr @"llvm.foo:0:0$0:0", align 8 |
| %1 = getelementptr i8, ptr %p, i64 %0 |
| %2 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 0, ptr %1) |
| store volatile i8 1, ptr %2, align 8, !dbg !26, !tbaa !27 |
| %3 = load i64, ptr @"llvm.foo:0:2$0:1", align 8 |
| %4 = getelementptr i8, ptr %p, i64 %3 |
| %5 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 1, ptr %4) |
| store volatile i16 2, ptr %5, align 2, !dbg !34, !tbaa !35 |
| %6 = load i64, ptr @"llvm.foo:0:4$0:2", align 8 |
| %7 = getelementptr i8, ptr %p, i64 %6 |
| %8 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 2, ptr %7) |
| store volatile i32 3, ptr %8, align 4, !dbg !36, !tbaa !37 |
| %9 = load i64, ptr @"llvm.foo:0:8$0:3", align 8 |
| %10 = getelementptr i8, ptr %p, i64 %9 |
| %11 = tail call ptr @llvm.bpf.passthrough.p0.p0(i32 3, ptr %10) |
| store volatile i64 4, ptr %11, align 8, !dbg !38, !tbaa !39 |
| ret void, !dbg !40 |
| } |
| |
| ; CHECK: [[L0:.Ltmp.*]]: |
| ; CHECK: *(u8 *)(r1 + 0) = 1 |
| ; CHECK: [[L2:.Ltmp.*]]: |
| ; CHECK: *(u16 *)(r1 + 2) = 2 |
| ; CHECK: [[L4:.Ltmp.*]]: |
| ; CHECK: *(u32 *)(r1 + 4) = 3 |
| ; CHECK: [[L6:.Ltmp.*]]: |
| ; CHECK: *(u64 *)(r1 + 8) = 4 |
| |
| ; CHECK: .section .BTF |
| ; ... |
| ; CHECK: .long [[FOO:.*]] # BTF_KIND_STRUCT(id = [[FOO_ID:.*]]) |
| ; ... |
| ; CHECK: .ascii "foo" # string offset=[[FOO]] |
| ; CHECK: .ascii ".text" # string offset=[[TEXT:.*]] |
| ; CHECK: .ascii "0:0" # string offset=[[S1:.*]] |
| ; CHECK: .ascii "0:1" # string offset=[[S2:.*]] |
| ; CHECK: .ascii "0:2" # string offset=[[S3:.*]] |
| ; CHECK: .ascii "0:3" # string offset=[[S4:.*]] |
| |
| ; CHECK: .section .BTF.ext |
| ; ... |
| ; CHECK: .long [[#]] # FieldReloc |
| ; CHECK-NEXT: .long [[TEXT]] # Field reloc section string offset=[[TEXT]] |
| ; CHECK-NEXT: .long [[#]] |
| ; CHECK-NEXT: .long [[L0]] |
| ; CHECK-NEXT: .long [[FOO_ID]] |
| ; CHECK-NEXT: .long [[S1]] |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long [[L2]] |
| ; CHECK-NEXT: .long [[FOO_ID]] |
| ; CHECK-NEXT: .long [[S2]] |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long [[L4]] |
| ; CHECK-NEXT: .long [[FOO_ID]] |
| ; CHECK-NEXT: .long [[S3]] |
| ; CHECK-NEXT: .long 0 |
| ; CHECK-NEXT: .long [[L6]] |
| ; CHECK-NEXT: .long [[FOO_ID]] |
| ; CHECK-NEXT: .long [[S4]] |
| ; CHECK-NEXT: .long 0 |
| |
| ; Function Attrs: nofree nosync nounwind memory(none) |
| declare ptr @llvm.bpf.passthrough.p0.p0(i32, ptr) #2 |
| |
| ; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none) |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #3 |
| |
| attributes #0 = { "btf_ama" } |
| attributes #1 = { nofree nounwind "frame-pointer"="all" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="v4" } |
| attributes #2 = { nofree nosync nounwind memory(none) } |
| attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) } |
| |
| !llvm.dbg.cu = !{!11} |
| !llvm.module.flags = !{!12, !13, !14, !15, !16} |
| !llvm.ident = !{!17} |
| |
| !0 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "foo", file: !1, line: 3, size: 128, elements: !2) |
| !1 = !DIFile(filename: "some-file.c", directory: "/some/dir", checksumkind: CSK_MD5, checksum: "e5d03b4d39dfffadc6c607e956c37996") |
| !2 = !{!3, !5, !7, !9} |
| !3 = !DIDerivedType(tag: DW_TAG_member, name: "b", scope: !0, file: !1, line: 4, baseType: !4, size: 8) |
| !4 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char) |
| !5 = !DIDerivedType(tag: DW_TAG_member, name: "h", scope: !0, file: !1, line: 5, baseType: !6, size: 16, offset: 16) |
| !6 = !DIBasicType(name: "unsigned short", size: 16, encoding: DW_ATE_unsigned) |
| !7 = !DIDerivedType(tag: DW_TAG_member, name: "w", scope: !0, file: !1, line: 6, baseType: !8, size: 32, offset: 32) |
| !8 = !DIBasicType(name: "unsigned int", size: 32, encoding: DW_ATE_unsigned) |
| !9 = !DIDerivedType(tag: DW_TAG_member, name: "d", scope: !0, file: !1, line: 7, baseType: !10, size: 64, offset: 64) |
| !10 = !DIBasicType(name: "unsigned long", size: 64, encoding: DW_ATE_unsigned) |
| !11 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 18.0.0 ...", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) |
| !12 = !{i32 7, !"Dwarf Version", i32 5} |
| !13 = !{i32 2, !"Debug Info Version", i32 3} |
| !14 = !{i32 1, !"wchar_size", i32 4} |
| !15 = !{i32 7, !"frame-pointer", i32 2} |
| !16 = !{i32 7, !"debug-info-assignment-tracking", i1 true} |
| !17 = !{!"clang version 18.0.0 ..."} |
| !18 = distinct !DISubprogram(name: "bar", scope: !1, file: !1, line: 10, type: !19, scopeLine: 10, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !11, retainedNodes: !23) |
| !19 = !DISubroutineType(types: !20) |
| !20 = !{null, !21} |
| !21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !22, size: 64) |
| !22 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !0) |
| !23 = !{!24} |
| !24 = !DILocalVariable(name: "p", arg: 1, scope: !18, file: !1, line: 10, type: !21) |
| !25 = !DILocation(line: 0, scope: !18) |
| !26 = !DILocation(line: 11, column: 8, scope: !18) |
| !27 = !{!28, !29, i64 0} |
| !28 = !{!"foo", !29, i64 0, !31, i64 2, !32, i64 4, !33, i64 8} |
| !29 = !{!"omnipotent char", !30, i64 0} |
| !30 = !{!"Simple C/C++ TBAA"} |
| !31 = !{!"short", !29, i64 0} |
| !32 = !{!"int", !29, i64 0} |
| !33 = !{!"long", !29, i64 0} |
| !34 = !DILocation(line: 12, column: 8, scope: !18) |
| !35 = !{!28, !31, i64 2} |
| !36 = !DILocation(line: 13, column: 8, scope: !18) |
| !37 = !{!28, !32, i64 4} |
| !38 = !DILocation(line: 14, column: 8, scope: !18) |
| !39 = !{!28, !33, i64 8} |
| !40 = !DILocation(line: 15, column: 1, scope: !18) |
