; RUN: opt -O2 %s | llvm-dis > %t1
; RUN: llc -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
; RUN: llc -mattr=+alu32 -filetype=asm -o - %t1 | FileCheck -check-prefixes=CHECK %s
; Source code:
; #define _(x) (__builtin_preserve_access_index(x))
; int get_value(const int *arg);
; int test(int *arg) {
; return get_value(_(&arg[4]));
; }
; Compilation flag:
; clang -target bpf -O2 -g -S -emit-llvm -Xclang -disable-llvm-passes test.c
target triple = "bpf"
; Function Attrs: nounwind
define dso_local i32 @test(ptr %arg) local_unnamed_addr #0 !dbg !10 {
entry:
call void @llvm.dbg.value(metadata ptr %arg, metadata !14, metadata !DIExpression()), !dbg !15
%0 = tail call ptr @llvm.preserve.array.access.index.p0.p0(ptr elementtype(i32) %arg, i32 0, i32 4), !dbg !16, !llvm.preserve.access.index !4
%call = tail call i32 @get_value(ptr %0) #4, !dbg !17
ret i32 %call, !dbg !18
}
; CHECK: r1 += 16
; CHECK: call get_value
; CHECK: .section .BTF.ext,"",@progbits
; CHECK-NOT: .long 16 # FieldReloc
declare dso_local i32 @get_value(ptr) local_unnamed_addr #1
; Function Attrs: nounwind readnone
declare ptr @llvm.preserve.array.access.index.p0.p0(ptr, i32, i32) #2
; Function Attrs: nounwind readnone speculatable willreturn
declare void @llvm.dbg.value(metadata, metadata, metadata) #3
attributes #0 = { nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "min-legal-vector-width"="0" "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" }
attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "frame-pointer"="all" "less-precise-fpmad"="false" "no-infs-fp-math"="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" }
attributes #2 = { nounwind readnone }
attributes #3 = { nounwind readnone speculatable willreturn }
attributes #4 = { nounwind }
!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!6, !7, !8}
!llvm.ident = !{!9}
!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, nameTableKind: None)
!1 = !DIFile(filename: "test.c", directory: "/tmp/home/yhs/work/tests/llvm/cast")
!2 = !{}
!3 = !{!4}
!4 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !5, size: 64)
!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!6 = !{i32 2, !"Dwarf Version", i32 4}
!7 = !{i32 2, !"Debug Info Version", i32 3}
!8 = !{i32 1, !"wchar_size", i32 4}
!9 = !{!"clang version 10.0.0 (trunk 367256) (llvm/trunk 367266)"}
!10 = distinct !DISubprogram(name: "test", scope: !1, file: !1, line: 3, type: !11, scopeLine: 3, flags: DIFlagPrototyped, isDefinition: true, isOptimized: true, unit: !0, retainedNodes: !13)
!11 = !DISubroutineType(types: !12)
!12 = !{!5, !4}
!13 = !{!14}
!14 = !DILocalVariable(name: "arg", arg: 1, scope: !10, file: !1, line: 3, type: !4)
!15 = !DILocation(line: 0, scope: !10)
!16 = !DILocation(line: 4, column: 20, scope: !10)
!17 = !DILocation(line: 4, column: 10, scope: !10)
!18 = !DILocation(line: 4, column: 3, scope: !10)
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