mirror of
https://github.com/RPCS3/llvm.git
synced 2026-07-01 21:04:04 -04:00
Hsiangkai Wang
82ea6cfac0
In debug frame information, some fields, e.g., Length in CIE/FDE and Offset in FDE are attributes to describe the structure of CIE/FDE. They are not related to the relaxed code. However, these attributes are symbol differences. So, in current design, these attributes will be filled as zero and LLVM generates relocations for them. We only need to generate relocations for symbols in executable sections. So, if the symbols are not located in executable sections, we still evaluate their values under relaxation. Differential Revision: https://reviews.llvm.org/D61584 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@366531 91177308-0d34-0410-b5e6-96231b3b80d8
106 lines
5.3 KiB
LLVM
106 lines
5.3 KiB
LLVM
; RUN: llc -filetype=obj -mtriple=riscv32 -mattr=+relax %s -o %t.o
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; RUN: llvm-readobj -r %t.o | FileCheck -check-prefix=READOBJ-RELOCS %s
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; RUN: llvm-objdump --source %t.o | FileCheck -check-prefix=OBJDUMP-SOURCE %s
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; RUN: llvm-dwarfdump --debug-info --debug-line %t.o | \
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; RUN: FileCheck -check-prefix=DWARF-DUMP %s
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; Check that we actually have relocations, otherwise this is kind of pointless.
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; READOBJ-RELOCS: Section (8) .rela.debug_info {
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; READOBJ-RELOCS: 0x1B R_RISCV_ADD32 - 0x0
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; READOBJ-RELOCS-NEXT: 0x1B R_RISCV_SUB32 - 0x0
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; READOBJ-RELOCS: Section (15) .rela.debug_frame {
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; READOBJ-RELOCS: 0x20 R_RISCV_ADD32 - 0x0
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; READOBJ-RELOCS-NEXT: 0x20 R_RISCV_SUB32 - 0x0
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; READOBJ-RELOCS: Section (17) .rela.debug_line {
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; READOBJ-RELOCS: 0x5A R_RISCV_ADD16 - 0x0
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; READOBJ-RELOCS-NEXT: 0x5A R_RISCV_SUB16 - 0x0
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; Check that we can print the source, even with relocations.
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; OBJDUMP-SOURCE: Disassembly of section .text:
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; OBJDUMP-SOURCE-EMPTY:
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; OBJDUMP-SOURCE-NEXT: 00000000 main:
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; OBJDUMP-SOURCE: ; {
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; OBJDUMP-SOURCE: ; return 0;
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; Check that we correctly dump the DWARF info, even with relocations.
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; DWARF-DUMP: DW_AT_name ("dwarf-riscv-relocs.c")
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; DWARF-DUMP: DW_AT_comp_dir (".")
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; DWARF-DUMP: DW_AT_name ("main")
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; DWARF-DUMP: DW_AT_decl_file ("{{.*}}dwarf-riscv-relocs.c")
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; DWARF-DUMP: DW_AT_decl_line (1)
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; DWARF-DUMP: DW_AT_type (0x00000032 "int")
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; DWARF-DUMP: DW_AT_name ("int")
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; DWARF-DUMP: DW_AT_encoding (DW_ATE_signed)
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; DWARF-DUMP: DW_AT_byte_size (0x04)
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; DWARF-DUMP: .debug_line contents:
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; DWARF-DUMP-NEXT: debug_line[0x00000000]
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; DWARF-DUMP-NEXT: Line table prologue:
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; DWARF-DUMP-NEXT: total_length: 0x0000005f
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; DWARF-DUMP-NEXT: version: 5
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; DWARF-DUMP-NEXT: address_size: 4
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; DWARF-DUMP-NEXT: seg_select_size: 0
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; DWARF-DUMP-NEXT: prologue_length: 0x0000003e
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; DWARF-DUMP-NEXT: min_inst_length: 1
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; DWARF-DUMP-NEXT: max_ops_per_inst: 1
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; DWARF-DUMP-NEXT: default_is_stmt: 1
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; DWARF-DUMP-NEXT: line_base: -5
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; DWARF-DUMP-NEXT: line_range: 14
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; DWARF-DUMP-NEXT: opcode_base: 13
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_copy] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_advance_pc] = 1
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_advance_line] = 1
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_file] = 1
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_column] = 1
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_negate_stmt] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_basic_block] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_const_add_pc] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_fixed_advance_pc] = 1
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_prologue_end] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_epilogue_begin] = 0
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; DWARF-DUMP-NEXT: standard_opcode_lengths[DW_LNS_set_isa] = 1
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; DWARF-DUMP-NEXT: include_directories[ 0] = "."
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; DWARF-DUMP-NEXT: file_names[ 0]:
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; DWARF-DUMP-NEXT: name: "dwarf-riscv-relocs.c"
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; DWARF-DUMP-NEXT: dir_index: 0
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; DWARF-DUMP-NEXT: md5_checksum: 05ab89f5481bc9f2d037e7886641e919
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; DWARF-DUMP-NEXT: source: "int main()\n{\n return 0;\n}\n"
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; DWARF-DUMP-EMPTY:
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; DWARF-DUMP-NEXT: Address Line Column File ISA Discriminator Flags
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; DWARF-DUMP-NEXT: ------------------ ------ ------ ------ --- ------------- -------------
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; DWARF-DUMP-NEXT: 0x0000000000000000 2 0 0 0 0 is_stmt
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; DWARF-DUMP-NEXT: 0x0000000000000014 3 5 0 0 0 is_stmt prologue_end
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; DWARF-DUMP-NEXT: 0x0000000000000028 3 5 0 0 0 is_stmt end_sequence
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; ModuleID = 'dwarf-riscv-relocs.c'
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source_filename = "dwarf-riscv-relocs.c"
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target datalayout = "e-m:e-p:32:32-i64:64-n32-S128"
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target triple = "riscv32"
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; Function Attrs: noinline nounwind optnone
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define dso_local i32 @main() #0 !dbg !7 {
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entry:
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%retval = alloca i32, align 4
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store i32 0, i32* %retval, align 4
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ret i32 0, !dbg !11
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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" "min-legal-vector-width"="0" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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-features"="+relax" "unsafe-fp-math"="false" "use-soft-float"="false" }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!3, !4, !5}
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!llvm.ident = !{!6}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None)
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!1 = !DIFile(filename: "dwarf-riscv-relocs.c", directory: ".", checksumkind: CSK_MD5, checksum: "05ab89f5481bc9f2d037e7886641e919", source: "int main()\0A{\0A return 0;\0A}\0A")
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!2 = !{}
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!3 = !{i32 2, !"Dwarf Version", i32 5}
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!4 = !{i32 2, !"Debug Info Version", i32 3}
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!5 = !{i32 1, !"wchar_size", i32 4}
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!6 = !{!"clang"}
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!7 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 1, type: !8, scopeLine: 2, spFlags: DISPFlagDefinition, unit: !0, retainedNodes: !2)
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!8 = !DISubroutineType(types: !9)
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!9 = !{!10}
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!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!11 = !DILocation(line: 3, column: 5, scope: !7)
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