xref: /aosp_15_r20/external/llvm/test/DebugInfo/Mips/delay-slot.ll (revision 9880d6810fe72a1726cb53787c6711e909410d58)

; RUN: llc -filetype=obj -O0 -relocation-model=pic < %s -mtriple mips-unknown-linux-gnu | llvm-dwarfdump - | FileCheck %s
; PR19815

; Generated using clang -target mips-linux-gnu -g test.c -S -o - -flto|opt -sroa -S
; test.c:
;
; int foo(int x) {
;  if (x)
;    return 0;
;  return 1;
; }

; CHECK: Address            Line   Column File   ISA Discriminator Flags
; CHECK: ------------------ ------ ------ ------ --- ------------- -------------
; CHECK: 0x0000000000000000      1      0      1   0             0  is_stmt
; FIXME: The next address probably ought to be 0x0000000000000004 but there's
;        a constant initialization before the prologue's end.
; CHECK: 0x0000000000000008      2      0      1   0             0  is_stmt prologue_end
; CHECK: 0x000000000000002c      3      0      1   0             0  is_stmt
; CHECK: 0x000000000000003c      4      0      1   0             0  is_stmt
; CHECK: 0x0000000000000048      5      0      1   0             0  is_stmt
; CHECK: 0x0000000000000058      5      0      1   0             0  is_stmt end_sequence


target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64"
target triple = "mips--linux-gnu"

; Function Attrs: nounwind
define i32 @foo(i32 %x) #0 !dbg !4 {
entry:
  call void @llvm.dbg.value(metadata i32 %x, i64 0, metadata !12, metadata !DIExpression()), !dbg !13
  %tobool = icmp ne i32 %x, 0, !dbg !14
  br i1 %tobool, label %if.then, label %if.end, !dbg !14

if.then:                                          ; preds = %entry
  br label %return, !dbg !16

if.end:                                           ; preds = %entry
  br label %return, !dbg !17

return:                                           ; preds = %if.end, %if.then
  %retval.0 = phi i32 [ 0, %if.then ], [ 1, %if.end ]
  ret i32 %retval.0, !dbg !18
}

; Function Attrs: nounwind readnone
declare void @llvm.dbg.declare(metadata, metadata, metadata) #1

; Function Attrs: nounwind readnone
declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }

!llvm.dbg.cu = !{!0}
!llvm.module.flags = !{!9, !10}
!llvm.ident = !{!11}

!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.5.0 ", isOptimized: false, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
!1 = !DIFile(filename: "test.c", directory: "/tmp")
!2 = !{}
!4 = distinct !DISubprogram(name: "foo", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, variables: !2)
!5 = !DIFile(filename: "test.c", directory: "/tmp")
!6 = !DISubroutineType(types: !7)
!7 = !{!8, !8}
!8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
!9 = !{i32 2, !"Dwarf Version", i32 4}
!10 = !{i32 2, !"Debug Info Version", i32 3}
!11 = !{!"clang version 3.5.0"}
!12 = !DILocalVariable(name: "x", line: 1, arg: 1, scope: !4, file: !5, type: !8)
!13 = !DILocation(line: 1, scope: !4)
!14 = !DILocation(line: 2, scope: !15)
!15 = distinct !DILexicalBlock(line: 2, column: 0, file: !1, scope: !4)
!16 = !DILocation(line: 3, scope: !15)
!17 = !DILocation(line: 4, scope: !4)
!18 = !DILocation(line: 5, scope: !4)