fb45493562
Reland D147506 after fixing the failure in bot https://lab.llvm.org/buildbot/#/builders/247/builds/4125 Some debuggers like DBX on AIX assume the address in debug line entries is always incremental. But clang generates two entries (entry for file scope line and entry for prologue end) with same address if prologue is empty And if the prologue is empty, seems the first debug line entry for the function is unnecessary(i.e. removing the first entry won't impact the behavior in GDB on Linux), so I implement this for all debuggers. Reviewed By: dblaikie Differential Revision: https://reviews.llvm.org/D147506
313 lines
11 KiB
LLVM
313 lines
11 KiB
LLVM
; RUN: llc -mcpu=mvp -generate-arange-section -filetype=obj %s -o - | llvm-readobj -S -r --symbols - | FileCheck %s
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; CHECK: Format: WASM
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; CHECK-NEXT: Arch: wasm64
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; CHECK-NEXT: AddressSize: 64bit
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; CHECK-NEXT: Sections [
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: TYPE (0x1)
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; CHECK-NEXT: Size: 4
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; CHECK-NEXT: Offset: 8
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: IMPORT (0x2)
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; CHECK-NEXT: Size: 81
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; CHECK-NEXT: Offset: 18
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: FUNCTION (0x3)
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; CHECK-NEXT: Size: 2
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; CHECK-NEXT: Offset: 105
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: ELEM (0x9)
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; CHECK-NEXT: Size: 7
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; CHECK-NEXT: Offset: 113
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: DATACOUNT (0xC)
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; CHECK-NEXT: Size: 1
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; CHECK-NEXT: Offset: 126
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CODE (0xA)
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; CHECK-NEXT: Size: 4
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; CHECK-NEXT: Offset: 133
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: DATA (0xB)
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; CHECK-NEXT: Size: 27
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; CHECK-NEXT: Offset: 143
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; CHECK-NEXT: Segments [
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; CHECK-NEXT: Segment {
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; CHECK-NEXT: Name: .data.foo
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; CHECK-NEXT: Size: 8
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; CHECK-NEXT: Offset: 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Segment {
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; CHECK-NEXT: Name: .data.ptr2
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; CHECK-NEXT: Size: 8
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; CHECK-NEXT: Offset: 8
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 86
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; CHECK-NEXT: Offset: 176
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; CHECK-NEXT: Name: .debug_abbrev
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 130
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; CHECK-NEXT: Offset: 282
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; CHECK-NEXT: Name: .debug_info
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 80
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; CHECK-NEXT: Offset: 430
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; CHECK-NEXT: Name: .debug_aranges
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 121
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; CHECK-NEXT: Offset: 531
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; CHECK-NEXT: Name: .debug_str
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 42
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; CHECK-NEXT: Offset: 669
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; CHECK-NEXT: Name: .debug_pubnames
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 26
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; CHECK-NEXT: Offset: 733
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; CHECK-NEXT: Name: .debug_pubtypes
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 60
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; CHECK-NEXT: Offset: 781
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; CHECK-NEXT: Name: .debug_line
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 91
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; CHECK-NEXT: Offset: 859
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; CHECK-NEXT: Name: linking
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 9
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; CHECK-NEXT: Offset: 964
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; CHECK-NEXT: Name: reloc.DATA
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 61
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; CHECK-NEXT: Offset: 990
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; CHECK-NEXT: Name: reloc..debug_info
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 18
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; CHECK-NEXT: Offset: 1075
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; CHECK-NEXT: Name: reloc..debug_aranges
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 6
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; CHECK-NEXT: Offset: 1120
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; CHECK-NEXT: Name: reloc..debug_pubnames
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 6
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; CHECK-NEXT: Offset: 1154
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; CHECK-NEXT: Name: reloc..debug_pubtypes
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 6
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; CHECK-NEXT: Offset: 1188
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; CHECK-NEXT: Name: reloc..debug_line
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 77
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; CHECK-NEXT: Offset: 1218
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; CHECK-NEXT: Name: producers
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; CHECK-NEXT: }
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; CHECK-NEXT: Section {
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; CHECK-NEXT: Type: CUSTOM (0x0)
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; CHECK-NEXT: Size: 11
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; CHECK-NEXT: Offset: 1311
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; CHECK-NEXT: Name: target_features
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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; CHECK-NEXT: Relocations [
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; CHECK-NEXT: Section (7) DATA {
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; CHECK-NEXT: 0x6 R_WASM_MEMORY_ADDR_I64 myextern 0
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; CHECK-NEXT: 0x13 R_WASM_TABLE_INDEX_I64 f2
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; CHECK-NEXT: }
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; CHECK-NEXT: Section (9) .debug_info {
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; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_abbrev 0
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; CHECK-NEXT: 0xC R_WASM_SECTION_OFFSET_I32 .debug_str 0
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; CHECK-NEXT: 0x12 R_WASM_SECTION_OFFSET_I32 .debug_str 55
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; CHECK-NEXT: 0x16 R_WASM_SECTION_OFFSET_I32 .debug_line 0
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; CHECK-NEXT: 0x1A R_WASM_SECTION_OFFSET_I32 .debug_str 62
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; CHECK-NEXT: 0x1E R_WASM_FUNCTION_OFFSET_I64 f2 0
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; CHECK-NEXT: 0x2B R_WASM_SECTION_OFFSET_I32 .debug_str 105
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; CHECK-NEXT: 0x37 R_WASM_MEMORY_ADDR_I64 foo 0
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; CHECK-NEXT: 0x45 R_WASM_SECTION_OFFSET_I32 .debug_str 109
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; CHECK-NEXT: 0x4C R_WASM_SECTION_OFFSET_I32 .debug_str 113
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; CHECK-NEXT: 0x58 R_WASM_MEMORY_ADDR_I64 ptr2 0
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; CHECK-NEXT: 0x67 R_WASM_FUNCTION_OFFSET_I64 f2 0
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; CHECK-NEXT: 0x76 R_WASM_GLOBAL_INDEX_I32 __stack_pointer
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; CHECK-NEXT: 0x7B R_WASM_SECTION_OFFSET_I32 .debug_str 118
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; CHECK-NEXT: }
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; CHECK-NEXT: Section (10) .debug_aranges {
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; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_info 0
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; CHECK-NEXT: 0x10 R_WASM_MEMORY_ADDR_I64 foo 0
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; CHECK-NEXT: 0x20 R_WASM_MEMORY_ADDR_I64 ptr2 0
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; CHECK-NEXT: 0x30 R_WASM_FUNCTION_OFFSET_I64 f2 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Section (12) .debug_pubnames {
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; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_info 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Section (13) .debug_pubtypes {
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; CHECK-NEXT: 0x6 R_WASM_SECTION_OFFSET_I32 .debug_info 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Section (14) .debug_line {
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; CHECK-NEXT: 0x2E R_WASM_FUNCTION_OFFSET_I64 f2 1
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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; CHECK-NEXT: Symbols [
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: f2
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; CHECK-NEXT: Type: FUNCTION (0x0)
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; CHECK-NEXT: Flags [ (0x4)
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; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ElementIndex: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: foo
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; CHECK-NEXT: Type: DATA (0x1)
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; CHECK-NEXT: Flags [ (0x4)
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; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
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; CHECK-NEXT: ]
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; CHECK-NEXT: Offset: 0x0
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; CHECK-NEXT: Segment: 0x0
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; CHECK-NEXT: Size: 0x8
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: myextern
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; CHECK-NEXT: Type: DATA (0x1)
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; CHECK-NEXT: Flags [ (0x10)
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; CHECK-NEXT: UNDEFINED (0x10)
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; CHECK-NEXT: ]
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: ptr2
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; CHECK-NEXT: Type: DATA (0x1)
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; CHECK-NEXT: Flags [ (0x4)
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; CHECK-NEXT: VISIBILITY_HIDDEN (0x4)
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; CHECK-NEXT: ]
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; CHECK-NEXT: Offset: 0x0
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; CHECK-NEXT: Segment: 0x1
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; CHECK-NEXT: Size: 0x8
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: .debug_abbrev
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; CHECK-NEXT: Type: SECTION (0x3)
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; CHECK-NEXT: Flags [ (0x2)
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; CHECK-NEXT: BINDING_LOCAL (0x2)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ElementIndex: 0x7
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: .debug_info
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; CHECK-NEXT: Type: SECTION (0x3)
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; CHECK-NEXT: Flags [ (0x2)
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; CHECK-NEXT: BINDING_LOCAL (0x2)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ElementIndex: 0x8
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: __stack_pointer
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; CHECK-NEXT: Type: GLOBAL (0x2)
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; CHECK-NEXT: Flags [ (0x10)
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; CHECK-NEXT: UNDEFINED (0x10)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ImportModule: env
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; CHECK-NEXT: ElementIndex: 0x0
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: .debug_str
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; CHECK-NEXT: Type: SECTION (0x3)
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; CHECK-NEXT: Flags [ (0x2)
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; CHECK-NEXT: BINDING_LOCAL (0x2)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ElementIndex: 0xA
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; CHECK-NEXT: }
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; CHECK-NEXT: Symbol {
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; CHECK-NEXT: Name: .debug_line
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; CHECK-NEXT: Type: SECTION (0x3)
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; CHECK-NEXT: Flags [ (0x2)
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; CHECK-NEXT: BINDING_LOCAL (0x2)
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; CHECK-NEXT: ]
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; CHECK-NEXT: ElementIndex: 0xD
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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; generated from the following C code using: clang --target=wasm64 -g -O0 -S -emit-llvm test.c
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; extern int myextern;
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; void f2(void) { return; }
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;
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; int* foo = &myextern;
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; void (*ptr2)(void) = f2;
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target triple = "wasm64-unknown-unknown"
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source_filename = "test.c"
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@myextern = external global i32, align 4
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@foo = hidden global ptr @myextern, align 4, !dbg !0
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@ptr2 = hidden global ptr @f2, align 4, !dbg !6
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; Function Attrs: noinline nounwind optnone
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define hidden void @f2() #0 !dbg !17 {
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entry:
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ret void, !dbg !18
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}
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attributes #0 = { noinline nounwind optnone "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "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" "target-cpu"="mvp" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!2}
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!llvm.module.flags = !{!13, !14, !15}
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!llvm.ident = !{!16}
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!0 = !DIGlobalVariableExpression(var: !1, expr: !DIExpression())
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!1 = distinct !DIGlobalVariable(name: "foo", scope: !2, file: !3, line: 4, type: !11, isLocal: false, isDefinition: true)
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!2 = distinct !DICompileUnit(language: DW_LANG_C99, file: !3, producer: "clang version 7.0.0 (trunk 332303) (llvm/trunk 332406)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !4, globals: !5)
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!3 = !DIFile(filename: "test.c", directory: "/usr/local/google/home/sbc/dev/wasm/simple")
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!4 = !{}
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!5 = !{!0, !6}
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!6 = !DIGlobalVariableExpression(var: !7, expr: !DIExpression())
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!7 = distinct !DIGlobalVariable(name: "ptr2", scope: !2, file: !3, line: 5, type: !8, isLocal: false, isDefinition: true)
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!8 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !9, size: 64)
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!9 = !DISubroutineType(types: !10)
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!10 = !{null}
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !{i32 2, !"Dwarf Version", i32 4}
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!14 = !{i32 2, !"Debug Info Version", i32 3}
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!15 = !{i32 1, !"wchar_size", i32 4}
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!16 = !{!"clang version 7.0.0 (trunk 332303) (llvm/trunk 332406)"}
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!17 = distinct !DISubprogram(name: "f2", scope: !3, file: !3, line: 2, type: !9, isLocal: false, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false, unit: !2, retainedNodes: !4)
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!18 = !DILocation(line: 2, column: 17, scope: !17)
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