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46975d210c
Normalize common kinds of DWARF sub-expressions to make debug info encoding a bit more compact: DW_OP_constu [X < 32] -> DW_OP_litX DW_OP_constu [all ones] -> DW_OP_lit0, DW_OP_not (64-bit only) Differential revision: https://reviews.llvm.org/D51640 llvm-svn: 341457
41 lines
1.6 KiB
LLVM
41 lines
1.6 KiB
LLVM
; RUN: llc -o - %s | FileCheck --check-prefix=CHECK-DWARF2 %s
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; RUN: llc -dwarf-version=4 -o - %s | FileCheck --check-prefix=CHECK-DWARF4 %s
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; Exercise DW_OP_stack_value on global constants.
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target datalayout = "e-p:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK-DWARF2: .byte 6 # DW_AT_location
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; CHECK-DWARF2-NEXT: .byte 52
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; CHECK-DWARF2-NEXT: .byte 147
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; CHECK-DWARF2-NEXT: .byte 2
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; CHECK-DWARF2-NEXT: .byte 48
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; CHECK-DWARF2-NEXT: .byte 147
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; CHECK-DWARF2-NEXT: .byte 2
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; CHECK-DWARF4: .byte 8 # DW_AT_location
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; CHECK-DWARF4-NEXT:.byte 52
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; CHECK-DWARF4-NEXT:.byte 159
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; CHECK-DWARF4-NEXT:.byte 147
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; CHECK-DWARF4-NEXT:.byte 2
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; CHECK-DWARF4-NEXT:.byte 48
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; CHECK-DWARF4-NEXT:.byte 159
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; CHECK-DWARF4-NEXT:.byte 147
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; CHECK-DWARF4-NEXT:.byte 2
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang", file: !4, globals: !1, emissionKind: FullDebug)
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!1 = !{!2, !10}
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!2 = !DIGlobalVariableExpression(var: !8, expr: !3)
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!3 = !DIExpression(DW_OP_constu, 4, DW_OP_stack_value, DW_OP_LLVM_fragment, 0, 16)
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!4 = !DIFile(filename: "<stdin>", directory: "/")
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!5 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!6 = !{i32 2, !"Dwarf Version", i32 2}
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!7 = !{i32 2, !"Debug Info Version", i32 3}
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!8 = distinct !DIGlobalVariable(name: "a", scope: null, isLocal: false, isDefinition: true, type: !5)
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!9 = !DIExpression(DW_OP_constu, 0, DW_OP_stack_value, DW_OP_LLVM_fragment, 16, 16)
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!10 = !DIGlobalVariableExpression(var: !8, expr: !9)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!6, !7}
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