48 lines
2 KiB
LLVM
48 lines
2 KiB
LLVM
; RUN: llc -mtriple=x86_64-unknown-linux-gnu --basic-block-sections=all < %s | FileCheck %s
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;
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; Verify that AsmPrinter does not optimize debug line directives
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; across two distinct sections. Such optimization will lead
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; to incorrect debug line number if the memory layout of those
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; sections does not strictly mirror the order in the Asm file.
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;
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; int G;
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; void func(int x) {
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; if (x) G=0;
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; }
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;
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; Reduced from the above example, the IR has been modified so that
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; the store and return instructions have the same DebugLoc; in this
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; context, we should see 2 different directives for line #4 with an
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; intervening section directive.
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;
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; CHECK: .loc 0 4 1
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; CHECK: .section .text.func,"ax",@progbits,unique
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; CHECK: .loc 0 4 1
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define void @func(i1 %0) !dbg !8 {
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br i1 %0, label %3, label %2
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2: ; preds = %1
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store i32 0, ptr null, align 4, !dbg !12
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br label %3
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3: ; preds = %2, %1
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ret void, !dbg !12
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}
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7}
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!0 = distinct !DICompileUnit(language: DW_LANG_C11, file: !1, producer: "clang version 16.0.2", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, globals: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "test.c", directory: "/tmp", checksumkind: CSK_MD5, checksum: "fd2935e6157b382ad81da17a61f24bb1")
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!2 = !{!3}
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!3 = !DIGlobalVariableExpression(var: !4, expr: !DIExpression())
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!4 = distinct !DIGlobalVariable(name: "G", scope: !0, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true)
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!5 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!6 = !{i32 7, !"Dwarf Version", i32 5}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = distinct !DISubprogram(name: "func", scope: !1, file: !1, line: 2, type: !9, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null}
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!11 = !{}
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!12 = !DILocation(line: 4, column: 1, scope: !8)
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