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; RUN: llc -O3 -mtriple=i686-w64-mingw32 -o %t_no -filetype=obj %s
; RUN: llvm-dwarfdump -v -all %t_no | FileCheck %s -check-prefix=NO_STMT_SEQ
; RUN: llc -O3 -mtriple=i686-w64-mingw32 -o %t_yes -filetype=obj %s -emit-func-debug-line-table-offsets
; RUN: llvm-dwarfdump -v -all %t_yes | FileCheck %s -check-prefix=STMT_SEQ
; NO_STMT_SEQ-NOT: DW_AT_LLVM_stmt_sequence
; STMT_SEQ: [[[ABBREV_CODE1:[0-9]+]]] DW_TAG_subprogram
; STMT_SEQ: DW_AT_LLVM_stmt_sequence DW_FORM_sec_offset
; STMT_SEQ: [[[ABBREV_CODE2:[0-9]+]]] DW_TAG_subprogram
; STMT_SEQ: DW_AT_LLVM_stmt_sequence DW_FORM_sec_offset
; STMT_SEQ: DW_TAG_subprogram [[[ABBREV_CODE1]]]
; STMT_SEQ: DW_AT_LLVM_stmt_sequence [DW_FORM_sec_offset] (0x00000043)
; STMT_SEQ: DW_AT_name {{.*}}func01
; STMT_SEQ: DW_TAG_subprogram [[[ABBREV_CODE2]]]
; STMT_SEQ: DW_AT_LLVM_stmt_sequence [DW_FORM_sec_offset] (0x00000056)
; STMT_SEQ: DW_AT_name {{.*}}main
;; Check the entire line sequence to see that it's correct
; STMT_SEQ: Address Line Column File ISA Discriminator OpIndex Flags
; STMT_SEQ-NEXT: ------------------ ------ ------ ------ --- ------------- ------- -------------
; STMT_SEQ-NEXT: 0x00000043: 04 DW_LNS_set_file (0)
; STMT_SEQ-NEXT: 0x00000045: 05 DW_LNS_set_column (9)
; STMT_SEQ-NEXT: 0x00000047: 0a DW_LNS_set_prologue_end
; STMT_SEQ-NEXT: 0x00000048: 00 DW_LNE_set_address (0x00000000)
; STMT_SEQ-NEXT: 0x0000004f: 16 address += 0, line += 4, op-index += 0
; STMT_SEQ-NEXT: 0x0000000000000000 5 9 0 0 0 0 is_stmt prologue_end
; STMT_SEQ-NEXT: 0x00000050: 05 DW_LNS_set_column (3)
; STMT_SEQ-NEXT: 0x00000052: 67 address += 6, line += 1, op-index += 0
; STMT_SEQ-NEXT: 0x0000000000000006 6 3 0 0 0 0 is_stmt
; STMT_SEQ-NEXT: 0x00000053: 00 DW_LNE_end_sequence
; STMT_SEQ-NEXT: 0x0000000000000006 6 3 0 0 0 0 is_stmt end_sequence
; STMT_SEQ-NEXT: 0x00000056: 04 DW_LNS_set_file (0)
; STMT_SEQ-NEXT: 0x00000058: 00 DW_LNE_set_address (0x00000008)
; STMT_SEQ-NEXT: 0x0000005f: 03 DW_LNS_advance_line (10)
; STMT_SEQ-NEXT: 0x00000061: 01 DW_LNS_copy
; STMT_SEQ-NEXT: 0x0000000000000008 10 0 0 0 0 0 is_stmt
; STMT_SEQ-NEXT: 0x00000062: 05 DW_LNS_set_column (10)
; STMT_SEQ-NEXT: 0x00000064: 0a DW_LNS_set_prologue_end
; STMT_SEQ-NEXT: 0x00000065: 83 address += 8, line += 1, op-index += 0
; STMT_SEQ-NEXT: 0x0000000000000010 11 10 0 0 0 0 is_stmt prologue_end
; STMT_SEQ-NEXT: 0x00000066: 05 DW_LNS_set_column (3)
; STMT_SEQ-NEXT: 0x00000068: 9f address += 10, line += 1, op-index += 0
; STMT_SEQ-NEXT: 0x000000000000001a 12 3 0 0 0 0 is_stmt
; STMT_SEQ-NEXT: 0x00000069: 02 DW_LNS_advance_pc (addr += 5, op-index += 0)
; STMT_SEQ-NEXT: 0x0000006b: 00 DW_LNE_end_sequence
; STMT_SEQ-NEXT: 0x000000000000001f 12 3 0 0 0 0 is_stmt end_sequence
; generated from:
; clang -Oz -g -S -emit-llvm test.c -o test.ll
; ======= test.c ======
; volatile int g_var1 = 1;
; #define ATTR __attribute__((noinline))
; ATTR int func01() {
; g_var1++;
; func01();
; return 1;
; }
; ATTR int main() {
; g_var1 = 100;
; func01();
; g_var1--;
; return g_var1;
; }
; =====================
; ModuleID = 'test.c'
source_filename = "test.c"
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@g_var1 = dso_local global i32 1, align 4, !dbg !0
; Function Attrs: minsize nofree noinline norecurse noreturn nounwind optsize memory(readwrite, argmem: none) uwtable
define dso_local noundef i32 @func01() local_unnamed_addr #0 !dbg !14 {
entry:
br label %tailrecurse
tailrecurse: ; preds = %tailrecurse, %entry
%0 = load volatile i32, ptr @g_var1, align 4, !dbg !17, !tbaa !18
%inc = add nsw i32 %0, 1, !dbg !17
store volatile i32 %inc, ptr @g_var1, align 4, !dbg !17, !tbaa !18
br label %tailrecurse, !dbg !22
}
; Function Attrs: minsize nofree noinline norecurse noreturn nounwind optsize uwtable
define dso_local noundef i32 @main() local_unnamed_addr #1 !dbg !23 {
entry:
store volatile i32 100, ptr @g_var1, align 4, !dbg !24, !tbaa !18
%call = tail call i32 @func01() #2, !dbg !25
unreachable, !dbg !26
}
attributes #0 = { minsize nofree noinline norecurse noreturn nounwind optsize memory(readwrite, argmem: none) uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { minsize nofree noinline norecurse noreturn nounwind optsize uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #2 = { minsize optsize }
!llvm.dbg.cu = !{!2}
!llvm.module.flags = !{!7, !8, !9, !10, !11, !12}
!llvm.ident = !{!13}
!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
!1 = distinct !DIGlobalVariable(name: "g_var1", scope: !2, file: !3, line: 1, type: !5, isLocal: false, isDefinition: true)
!2 = distinct !DICompileUnit(language: DW_LANG_C11, file: !3, producer: "clang version 20.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !4, splitDebugInlining: false, nameTableKind: None)
!3 = !DIFile(filename: "test.c", directory: "/tmp/tst", checksumkind: CSK_MD5, checksum: "eee003eb3c4fd0a1ff078d3148679e06")
!4 = !{!0}
!5 = !DIDerivedType(tag: DW_TAG_volatile_type, baseType: !6)
!6 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
!7 = !{i32 7, !"Dwarf Version", i32 5}
!8 = !{i32 2, !"Debug Info Version", i32 3}
!9 = !{i32 1, !"wchar_size", i32 4}
!10 = !{i32 8, !"PIC Level", i32 2}
!11 = !{i32 7, !"PIE Level", i32 2}
!12 = !{i32 7, !"uwtable", i32 2}
!13 = !{!"clang version 20.0.0"}
!14 = distinct !DISubprogram(name: "func01", scope: !3, file: !3, line: 4, type: !15, scopeLine: 4, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
!15 = !DISubroutineType(types: !16)
!16 = !{!6}
!17 = !DILocation(line: 5, column: 9, scope: !14)
!18 = !{!19, !19, i64 0}
!19 = !{!"int", !20, i64 0}
!20 = !{!"omnipotent char", !21, i64 0}
!21 = !{!"Simple C/C++ TBAA"}
!22 = !DILocation(line: 6, column: 3, scope: !14)
!23 = distinct !DISubprogram(name: "main", scope: !3, file: !3, line: 10, type: !15, scopeLine: 10, flags: DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !2)
!24 = !DILocation(line: 11, column: 10, scope: !23)
!25 = !DILocation(line: 12, column: 3, scope: !23)
!26 = !DILocation(line: 13, column: 9, scope: !23)
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