--- /dev/null
+; RUN: llc -march=bpfel -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
+; RUN: llc -march=bpfeb -filetype=asm -o - %s | FileCheck -check-prefixes=CHECK %s
+
+; Source code:
+; typedef int * int_ptr;
+; static int * volatile v1;
+; static const int * volatile v2;
+; static volatile int_ptr v3 = 0;
+; static volatile const int_ptr v4 = 0;
+; long foo() { return (long)(v1 - v2 + v3 - v4); }
+; Compilation flag:
+; clang -target bpf -O2 -g -S -emit-llvm test.c
+
+@v1 = internal global i32* null, align 8, !dbg !0
+@v2 = internal global i32* null, align 8, !dbg !8
+@v3 = internal global i32* null, align 8, !dbg !14
+@v4 = internal constant i32* null, align 8, !dbg !19
+
+; Function Attrs: norecurse nounwind
+define dso_local i64 @foo() local_unnamed_addr #0 !dbg !27 {
+ %1 = load volatile i32*, i32** @v1, align 8, !dbg !29, !tbaa !30
+ %2 = load volatile i32*, i32** @v2, align 8, !dbg !34, !tbaa !30
+ %3 = ptrtoint i32* %1 to i64, !dbg !35
+ %4 = ptrtoint i32* %2 to i64, !dbg !35
+ %5 = sub i64 %3, %4, !dbg !35
+ %6 = ashr exact i64 %5, 2, !dbg !35
+ %7 = load volatile i32*, i32** @v3, align 8, !dbg !36, !tbaa !30
+ %8 = getelementptr inbounds i32, i32* %7, i64 %6, !dbg !37
+ %9 = load volatile i32*, i32** @v4, align 8, !dbg !38, !tbaa !30
+ %10 = ptrtoint i32* %8 to i64, !dbg !39
+ %11 = ptrtoint i32* %9 to i64, !dbg !39
+ %12 = sub i64 %10, %11, !dbg !39
+ %13 = ashr exact i64 %12, 2, !dbg !39
+ ret i64 %13, !dbg !40
+}
+
+; CHECK: .section .BTF,"",@progbits
+; CHECK-NEXT: .short 60319 # 0xeb9f
+; CHECK-NEXT: .byte 1
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .long 24
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 288
+; CHECK-NEXT: .long 288
+; CHECK-NEXT: .long 95
+; CHECK-NEXT: .long 0 # BTF_KIND_FUNC_PROTO(id = 1)
+; CHECK-NEXT: .long 218103808 # 0xd000000
+; CHECK-NEXT: .long 2
+; CHECK-NEXT: .long 45 # BTF_KIND_INT(id = 2)
+; CHECK-NEXT: .long 16777216 # 0x1000000
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .long 16777280 # 0x1000040
+; CHECK-NEXT: .long 54 # BTF_KIND_FUNC(id = 3)
+; CHECK-NEXT: .long 201326592 # 0xc000000
+; CHECK-NEXT: .long 1
+; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 4)
+; CHECK-NEXT: .long 150994944 # 0x9000000
+; CHECK-NEXT: .long 5
+; CHECK-NEXT: .long 0 # BTF_KIND_PTR(id = 5)
+; CHECK-NEXT: .long 33554432 # 0x2000000
+; CHECK-NEXT: .long 6
+; CHECK-NEXT: .long 58 # BTF_KIND_INT(id = 6)
+; CHECK-NEXT: .long 16777216 # 0x1000000
+; CHECK-NEXT: .long 4
+; CHECK-NEXT: .long 16777248 # 0x1000020
+; CHECK-NEXT: .long 62 # BTF_KIND_VAR(id = 7)
+; CHECK-NEXT: .long 234881024 # 0xe000000
+; CHECK-NEXT: .long 4
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 8)
+; CHECK-NEXT: .long 150994944 # 0x9000000
+; CHECK-NEXT: .long 9
+; CHECK-NEXT: .long 0 # BTF_KIND_PTR(id = 9)
+; CHECK-NEXT: .long 33554432 # 0x2000000
+; CHECK-NEXT: .long 10
+; CHECK-NEXT: .long 0 # BTF_KIND_CONST(id = 10)
+; CHECK-NEXT: .long 167772160 # 0xa000000
+; CHECK-NEXT: .long 6
+; CHECK-NEXT: .long 65 # BTF_KIND_VAR(id = 11)
+; CHECK-NEXT: .long 234881024 # 0xe000000
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 0 # BTF_KIND_VOLATILE(id = 12)
+; CHECK-NEXT: .long 150994944 # 0x9000000
+; CHECK-NEXT: .long 13
+; CHECK-NEXT: .long 68 # BTF_KIND_TYPEDEF(id = 13)
+; CHECK-NEXT: .long 134217728 # 0x8000000
+; CHECK-NEXT: .long 5
+; CHECK-NEXT: .long 76 # BTF_KIND_VAR(id = 14)
+; CHECK-NEXT: .long 234881024 # 0xe000000
+; CHECK-NEXT: .long 12
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 0 # BTF_KIND_CONST(id = 15)
+; CHECK-NEXT: .long 167772160 # 0xa000000
+; CHECK-NEXT: .long 12
+; CHECK-NEXT: .long 79 # BTF_KIND_VAR(id = 16)
+; CHECK-NEXT: .long 234881024 # 0xe000000
+; CHECK-NEXT: .long 15
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 82 # BTF_KIND_DATASEC(id = 17)
+; CHECK-NEXT: .long 251658241 # 0xf000001
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 16
+; CHECK-NEXT: .long v4
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .long 90 # BTF_KIND_DATASEC(id = 18)
+; CHECK-NEXT: .long 251658243 # 0xf000003
+; CHECK-NEXT: .long 0
+; CHECK-NEXT: .long 7
+; CHECK-NEXT: .long v1
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .long 11
+; CHECK-NEXT: .long v2
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .long 14
+; CHECK-NEXT: .long v3
+; CHECK-NEXT: .long 8
+; CHECK-NEXT: .byte 0 # string offset=0
+; CHECK-NEXT: .ascii ".text" # string offset=1
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "/home/yhs/work/tests/llvm/bugs/test.c" # string offset=7
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "long int" # string offset=45
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "foo" # string offset=54
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "int" # string offset=58
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "v1" # string offset=62
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "v2" # string offset=65
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "int_ptr" # string offset=68
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "v3" # string offset=76
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii "v4" # string offset=79
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii ".rodata" # string offset=82
+; CHECK-NEXT: .byte 0
+; CHECK-NEXT: .ascii ".bss" # string offset=90
+; CHECK-NEXT: .byte 0
+
+attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
+
+!llvm.dbg.cu = !{!2}
+!llvm.module.flags = !{!23, !24, !25}
+!llvm.ident = !{!26}
+
+!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
+!1 = distinct !DIGlobalVariable(name: "v1", scope: !2, file: !3, line: 2, type: !22, isLocal: true, isDefinition: true)
+!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 8.0.20181009 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, retainedTypes: !5, globals: !7, nameTableKind: None)
+!3 = !DIFile(filename: "test.c", directory: "/home/yhs/work/tests/llvm/bugs")
+!4 = !{}
+!5 = !{!6}
+!6 = !DIBasicType(name: "long int", size: 64, encoding: DW_ATE_signed)
+!7 = !{!0, !8, !14, !19}
+!8 = !DIGlobalVariableExpression(var: !9, expr: !DIExpression())
+!9 = distinct !DIGlobalVariable(name: "v2", scope: !2, file: !3, line: 3, type: !10, isLocal: true, isDefinition: true)
+!10 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !11)
+!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
+!12 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !13)
+!13 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
+!14 = !DIGlobalVariableExpression(var: !15, expr: !DIExpression())
+!15 = distinct !DIGlobalVariable(name: "v3", scope: !2, file: !3, line: 4, type: !16, isLocal: true, isDefinition: true)
+!16 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !17)
+!17 = !DIDerivedType(tag: DW_TAG_typedef, name: "int_ptr", file: !3, line: 1, baseType: !18)
+!18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !13, size: 64)
+!19 = !DIGlobalVariableExpression(var: !20, expr: !DIExpression())
+!20 = distinct !DIGlobalVariable(name: "v4", scope: !2, file: !3, line: 5, type: !21, isLocal: true, isDefinition: true)
+!21 = !DIDerivedType(tag: DW_TAG_const_type, baseType: !16)
+!22 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !18)
+!23 = !{i32 2, !"Dwarf Version", i32 4}
+!24 = !{i32 2, !"Debug Info Version", i32 3}
+!25 = !{i32 1, !"wchar_size", i32 4}
+!26 = !{!"clang version 8.0.20181009 "}
+!27 = distinct !DISubprogram(name: "foo", scope: !3, file: !3, line: 6, type: !28, isLocal: false, isDefinition: true, scopeLine: 6, isOptimized: true, unit: !2, retainedNodes: !4)
+!28 = !DISubroutineType(types: !5)
+!29 = !DILocation(line: 6, column: 28, scope: !27)
+!30 = !{!31, !31, i64 0}
+!31 = !{!"any pointer", !32, i64 0}
+!32 = !{!"omnipotent char", !33, i64 0}
+!33 = !{!"Simple C/C++ TBAA"}
+!34 = !DILocation(line: 6, column: 33, scope: !27)
+!35 = !DILocation(line: 6, column: 31, scope: !27)
+!36 = !DILocation(line: 6, column: 38, scope: !27)
+!37 = !DILocation(line: 6, column: 36, scope: !27)
+!38 = !DILocation(line: 6, column: 43, scope: !27)
+!39 = !DILocation(line: 6, column: 41, scope: !27)
+!40 = !DILocation(line: 6, column: 14, scope: !27)