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Differential D157356

[BOLT][DWARF] Always use new low_pc for call_site
ClosedPublic

Authored by ayermolo on Aug 7 2023, 8:33 PM.

Details

Reviewers
rafauler
Amir
maksfb
jdoerfert
Commits
rG55a1d959a5e9: [BOLT][DWARF] Always use new low_pc for call_site
Summary

Changed to creating a new index all the time. This code was legacy of when we
couldn't change the size of .debug_info, and led to subtle bugs where index for
new entries was pointing to a wrong address.

Diff Detail

Event Timeline

ayermolo created this revision.Aug 7 2023, 8:33 PM
Herald added a reviewer: rafauler. · View Herald TranscriptAug 7 2023, 8:33 PM
Herald added a reviewer: Amir. · View Herald Transcript
Herald added a reviewer: maksfb. · View Herald Transcript
Herald added a project: Restricted Project. · View Herald Transcript
Herald added subscribers: treapster, hoy, modimo, wenlei. · View Herald Transcript
ayermolo requested review of this revision.Aug 7 2023, 8:33 PM
Herald added a reviewer: jdoerfert. · View Herald TranscriptAug 7 2023, 8:33 PM
Herald added a project: Restricted Project. · View Herald Transcript
Herald added subscribers: llvm-commits, jplehr, yota9, sstefan1. · View Herald Transcript
ayermolo mentioned this in D157357: [BOLT][DWARF][NFC] Remove addIndexAddress.Aug 7 2023, 8:35 PM
Harbormaster completed remote builds in B250981: Diff 548048.Aug 7 2023, 8:39 PM
Amir accepted this revision.Aug 8 2023, 2:45 PM

Looks sane/safe.

This revision is now accepted and ready to land.Aug 8 2023, 2:45 PM
Amir added a child revision: D157357: [BOLT][DWARF][NFC] Remove addIndexAddress.Aug 8 2023, 2:47 PM
Closed by commit rG55a1d959a5e9: [BOLT][DWARF] Always use new low_pc for call_site (authored by ayermolo). · Explain WhyAug 8 2023, 6:21 PM
This revision was automatically updated to reflect the committed changes.
ayermolo added a commit: rG55a1d959a5e9: [BOLT][DWARF] Always use new low_pc for call_site.

Revision Contents

Diff 548431

bolt/lib/Rewrite/DWARFRewriter.cpp

Show First 20 Lines • Show All 1,175 Lines • ▼ Show 20 Lines default: {
<< Die->getTag() << " to 0x" << Die->getTag() << " to 0x"
<< Twine::utohexstr(NewAddress) << '\n'); << Twine::utohexstr(NewAddress) << '\n');
} }
dwarf::Form Form = LowPCAttrInfo.getForm(); dwarf::Form Form = LowPCAttrInfo.getForm();
assert(Form != dwarf::DW_FORM_LLVM_addrx_offset && assert(Form != dwarf::DW_FORM_LLVM_addrx_offset &&
"DW_FORM_LLVM_addrx_offset is not supported"); "DW_FORM_LLVM_addrx_offset is not supported");
std::lock_guard<std::mutex> Lock(DWARFRewriterMutex); std::lock_guard<std::mutex> Lock(DWARFRewriterMutex);
if (Form == dwarf::DW_FORM_GNU_addr_index) { if (Form == dwarf::DW_FORM_addrx ||
// If there is no new address, storing old address. Form == dwarf::DW_FORM_GNU_addr_index) {
// Re-using Index to make implementation easier.
// DW_FORM_GNU_addr_index is variable lenght encoding
// so we either have to create indices of same sizes, or use same
// index.
// TODO: We can now re-write .debug_info. This can be simplified to
// just getting a new index and creating a patch.
const uint64_t Index = *Result;
AddrWriter->addIndexAddress(NewAddress ? NewAddress : Address,
Index, Unit);
} else if (Form == dwarf::DW_FORM_addrx) {
const uint32_t Index = AddrWriter->getIndexFromAddress( const uint32_t Index = AddrWriter->getIndexFromAddress(
NewAddress ? NewAddress : Address, Unit); NewAddress ? NewAddress : Address, Unit);
DIEBldr.replaceValue(Die, LowPCAttrInfo.getAttribute(), DIEBldr.replaceValue(Die, LowPCAttrInfo.getAttribute(),
LowPCAttrInfo.getForm(), DIEInteger(Index)); LowPCAttrInfo.getForm(), DIEInteger(Index));
} else { } else {
DIEBldr.replaceValue(Die, LowPCAttrInfo.getAttribute(), DIEBldr.replaceValue(Die, LowPCAttrInfo.getAttribute(),
LowPCAttrInfo.getForm(), LowPCAttrInfo.getForm(),
DIEInteger(NewAddress)); DIEInteger(NewAddress));
▲ Show 20 Lines • Show All 1,016 Lines • Show Last 20 Lines

bolt/test/X86/Inputs/dwarf4-df-call-site-change-low-pc-helper.s

  • This file was added.
# clang++ -O2 -g -gdwarf-4 -gsplit-dwarf
# int z = 0;
# int d = 0;
# int helper(int z_, int d_) {
# z += z_;
# d += d_;
# return z * d;
# }
.text
.file "helper.cpp"
.file 1 "." "helper.cpp"
.globl _Z6helperii # -- Begin function _Z6helperii
.p2align 4, 0x90
.type _Z6helperii,@function
_Z6helperii: # @_Z6helperii
.Lfunc_begin0:
.loc 1 3 0 # helper.cpp:3:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: helper:z_ <- $edi
#DEBUG_VALUE: helper:d_ <- $esi
movl %esi, %eax
.Ltmp0:
.loc 1 4 4 prologue_end # helper.cpp:4:4
addl z(%rip), %edi
.Ltmp1:
#DEBUG_VALUE: helper:z_ <- [DW_OP_LLVM_entry_value 1] $edi
.loc 1 5 4 # helper.cpp:5:4
addl d(%rip), %eax
.loc 1 4 4 # helper.cpp:4:4
movl %edi, z(%rip)
.loc 1 5 4 # helper.cpp:5:4
movl %eax, d(%rip)
.loc 1 6 11 # helper.cpp:6:11
imull %edi, %eax
.loc 1 6 2 is_stmt 0 # helper.cpp:6:2
retq
.Ltmp2:
.Lfunc_end0:
.size _Z6helperii, .Lfunc_end0-_Z6helperii
.cfi_endproc
# -- End function
.type z,@object # @z
.bss
.globl z
.p2align 2, 0x0
z:
.long 0 # 0x0
.size z, 4
.type d,@object # @d
.globl d
.p2align 2, 0x0
d:
.long 0 # 0x0
.size d, 4
.section .debug_loc.dwo,"e",@progbits
.Ldebug_loc0:
.byte 3
.byte 2
.long .Ltmp1-.Lfunc_begin0
.short 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.byte 3
.byte 3
.long .Lfunc_end0-.Ltmp1
.short 4 # Loc expr size
.byte 243 # DW_OP_GNU_entry_value
.byte 1 # 1
.byte 85 # super-register DW_OP_reg5
.byte 159 # DW_OP_stack_value
.byte 0
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.ascii "\260B" # DW_AT_GNU_dwo_name
.byte 14 # DW_FORM_strp
.ascii "\261B" # DW_AT_GNU_dwo_id
.byte 7 # DW_FORM_data8
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.ascii "\263B" # DW_AT_GNU_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x25 DW_TAG_compile_unit
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Lskel_string0 # DW_AT_comp_dir
# DW_AT_GNU_pubnames
.long .Lskel_string1 # DW_AT_GNU_dwo_name
.quad -7229095317601456558 # DW_AT_GNU_dwo_id
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_GNU_addr_base
.Ldebug_info_end0:
.section .debug_str,"MS",@progbits,1
.Lskel_string0:
.asciz "." # string offset=0
.Lskel_string1:
.asciz "helper.dwo" # string offset=47
.section .debug_str.dwo,"eMS",@progbits,1
.Linfo_string0:
.asciz "z" # string offset=0
.Linfo_string1:
.asciz "int" # string offset=2
.Linfo_string2:
.asciz "d" # string offset=6
.Linfo_string3:
.asciz "_Z6helperii" # string offset=8
.Linfo_string4:
.asciz "helper" # string offset=20
.Linfo_string5:
.asciz "z_" # string offset=27
.Linfo_string6:
.asciz "d_" # string offset=30
.Linfo_string7:
.asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" # string offset=33
.Linfo_string8:
.asciz "helper.cpp" # string offset=134
.Linfo_string9:
.asciz "helper.dwo" # string offset=145
.section .debug_str_offsets.dwo,"e",@progbits
.long 0
.long 2
.long 6
.long 8
.long 20
.long 27
.long 30
.long 33
.long 134
.long 145
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 4 # DWARF version number
.long 0 # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x50 DW_TAG_compile_unit
.byte 7 # DW_AT_producer
.short 33 # DW_AT_language
.byte 8 # DW_AT_name
.byte 9 # DW_AT_GNU_dwo_name
.quad -7229095317601456558 # DW_AT_GNU_dwo_id
.byte 2 # Abbrev [2] 0x19:0xb DW_TAG_variable
.byte 0 # DW_AT_name
.long 36 # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 251
.byte 0
.byte 3 # Abbrev [3] 0x24:0x4 DW_TAG_base_type
.byte 1 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x28:0xb DW_TAG_variable
.byte 2 # DW_AT_name
.long 36 # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 251
.byte 1
.byte 4 # Abbrev [4] 0x33:0x27 DW_TAG_subprogram
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_GNU_all_call_sites
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 36 # DW_AT_type
# DW_AT_external
.byte 5 # Abbrev [5] 0x43:0xc DW_TAG_formal_parameter
.long .Ldebug_loc0-.debug_loc.dwo # DW_AT_location
.byte 5 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 36 # DW_AT_type
.byte 6 # Abbrev [6] 0x4f:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 84
.byte 6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 36 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 0 # End Of Children Mark
.Ldebug_info_dwo_end0:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.ascii "\260B" # DW_AT_GNU_dwo_name
.ascii "\202>" # DW_FORM_GNU_str_index
.ascii "\261B" # DW_AT_GNU_dwo_id
.byte 7 # DW_FORM_data8
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.ascii "\201>" # DW_FORM_GNU_addr_index
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.ascii "\227B" # DW_AT_GNU_all_call_sites
.byte 25 # DW_FORM_flag_present
.byte 110 # DW_AT_linkage_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_addr,"",@progbits
.Laddr_table_base0:
.quad z
.quad d
.quad .Lfunc_begin0
.quad .Ltmp1
.section .debug_gnu_pubnames,"",@progbits
.long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info
.LpubNames_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 48 # Compilation Unit Length
.long 25 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "z" # External Name
.long 40 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "d" # External Name
.long 51 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "helper" # External Name
.long 0 # End Mark
.LpubNames_end0:
.section .debug_gnu_pubtypes,"",@progbits
.long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info
.LpubTypes_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 48 # Compilation Unit Length
.long 36 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "int" # External Name
.long 0 # End Mark
.LpubTypes_end0:
.ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

bolt/test/X86/Inputs/dwarf4-df-call-site-change-low-pc-main.s

  • This file was added.
# clang++ -O2 -g -gdwarf-4 -gsplit-dwarf
# void use(int * x, int * y) {
# *x += 4;
# *y -= 2;
# }
#
# int helper(int z_, int d_);
# int x = 0;
# int y = 1;
# int main(int argc, char *argv[]) {
# x = argc;
# y = argc + 3;
# //use(&x, &y);
# return helper(x, y);
# }
.text
.file "main.cpp"
.file 1 "." "main.cpp"
.globl _Z3usePiS_ # -- Begin function _Z3usePiS_
.p2align 4, 0x90
.type _Z3usePiS_,@function
_Z3usePiS_: # @_Z3usePiS_
.Lfunc_begin0:
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: use:x <- $rdi
#DEBUG_VALUE: use:y <- $rsi
.loc 1 2 5 prologue_end # main.cpp:2:5
addl $4, (%rdi)
.loc 1 3 5 # main.cpp:3:5
addl $-2, (%rsi)
.loc 1 4 1 # main.cpp:4:1
retq
.Ltmp0:
.Lfunc_end0:
.size _Z3usePiS_, .Lfunc_end0-_Z3usePiS_
.cfi_endproc
# -- End function
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin1:
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
# kill: def $edi killed $edi def $rdi
.loc 1 10 6 prologue_end # main.cpp:10:6
movl %edi, x(%rip)
.loc 1 11 13 # main.cpp:11:13
leal 3(%rdi), %esi
.Ltmp1:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 1 11 6 is_stmt 0 # main.cpp:11:6
movl %esi, y(%rip)
# kill: def $edi killed $edi killed $rdi
.Ltmp2:
.loc 1 13 11 is_stmt 1 # main.cpp:13:11
jmp _Z6helperii@PLT # TAILCALL
.Ltmp3:
.Lfunc_end1:
.size main, .Lfunc_end1-main
.cfi_endproc
# -- End function
.type x,@object # @x
.bss
.globl x
.p2align 2, 0x0
x:
.long 0 # 0x0
.size x, 4
.type y,@object # @y
.data
.globl y
.p2align 2, 0x0
y:
.long 1 # 0x1
.size y, 4
.section .debug_loc.dwo,"e",@progbits
.Ldebug_loc0:
.byte 3
.byte 3
.long .Ltmp1-.Lfunc_begin1
.short 1 # Loc expr size
.byte 84 # DW_OP_reg4
.byte 3
.byte 5
.long .Lfunc_end1-.Ltmp1
.short 4 # Loc expr size
.byte 243 # DW_OP_GNU_entry_value
.byte 1 # 1
.byte 84 # DW_OP_reg4
.byte 159 # DW_OP_stack_value
.byte 0
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 0 # DW_CHILDREN_no
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 14 # DW_FORM_strp
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.ascii "\260B" # DW_AT_GNU_dwo_name
.byte 14 # DW_FORM_strp
.ascii "\261B" # DW_AT_GNU_dwo_id
.byte 7 # DW_FORM_data8
.byte 17 # DW_AT_low_pc
.byte 1 # DW_FORM_addr
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.ascii "\263B" # DW_AT_GNU_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 4 # DWARF version number
.long .debug_abbrev # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x25 DW_TAG_compile_unit
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Lskel_string0 # DW_AT_comp_dir
# DW_AT_GNU_pubnames
.long .Lskel_string1 # DW_AT_GNU_dwo_name
.quad -3308548803209949056 # DW_AT_GNU_dwo_id
.quad .Lfunc_begin0 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_GNU_addr_base
.Ldebug_info_end0:
.section .debug_str,"MS",@progbits,1
.Lskel_string0:
.asciz "." # string offset=0
.Lskel_string1:
.asciz "main.dwo" # string offset=47
.section .debug_str.dwo,"eMS",@progbits,1
.Linfo_string0:
.asciz "x" # string offset=0
.Linfo_string1:
.asciz "int" # string offset=2
.Linfo_string2:
.asciz "y" # string offset=6
.Linfo_string3:
.asciz "_Z6helperii" # string offset=8
.Linfo_string4:
.asciz "helper" # string offset=20
.Linfo_string5:
.asciz "_Z3usePiS_" # string offset=27
.Linfo_string6:
.asciz "use" # string offset=38
.Linfo_string7:
.asciz "main" # string offset=42
.Linfo_string8:
.asciz "argc" # string offset=47
.Linfo_string9:
.asciz "argv" # string offset=52
.Linfo_string10:
.asciz "char" # string offset=57
.Linfo_string11:
.asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" # string offset=62
.Linfo_string12:
.asciz "main.cpp" # string offset=163
.Linfo_string13:
.asciz "main.dwo" # string offset=172
.section .debug_str_offsets.dwo,"e",@progbits
.long 0
.long 2
.long 6
.long 8
.long 20
.long 27
.long 38
.long 42
.long 47
.long 52
.long 57
.long 62
.long 163
.long 172
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 4 # DWARF version number
.long 0 # Offset Into Abbrev. Section
.byte 8 # Address Size (in bytes)
.byte 1 # Abbrev [1] 0xb:0x9d DW_TAG_compile_unit
.byte 11 # DW_AT_producer
.short 33 # DW_AT_language
.byte 12 # DW_AT_name
.byte 13 # DW_AT_GNU_dwo_name
.quad -3308548803209949056 # DW_AT_GNU_dwo_id
.byte 2 # Abbrev [2] 0x19:0xb DW_TAG_variable
.byte 0 # DW_AT_name
.long 36 # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 251
.byte 0
.byte 3 # Abbrev [3] 0x24:0x4 DW_TAG_base_type
.byte 1 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x28:0xb DW_TAG_variable
.byte 2 # DW_AT_name
.long 36 # DW_AT_type
# DW_AT_external
.byte 1 # DW_AT_decl_file
.byte 8 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 251
.byte 1
.byte 4 # Abbrev [4] 0x33:0x21 DW_TAG_subprogram
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_GNU_all_call_sites
.byte 5 # DW_AT_linkage_name
.byte 6 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
# DW_AT_external
.byte 5 # Abbrev [5] 0x3f:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 85
.byte 0 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 148 # DW_AT_type
.byte 5 # Abbrev [5] 0x49:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 84
.byte 2 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 148 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 6 # Abbrev [6] 0x54:0x2c DW_TAG_subprogram
.byte 3 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin1 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_GNU_all_call_sites
.byte 7 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 36 # DW_AT_type
# DW_AT_external
.byte 5 # Abbrev [5] 0x63:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 85
.byte 8 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 36 # DW_AT_type
.byte 7 # Abbrev [7] 0x6d:0xc DW_TAG_formal_parameter
.long .Ldebug_loc0-.debug_loc.dwo # DW_AT_location
.byte 9 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 153 # DW_AT_type
.byte 8 # Abbrev [8] 0x79:0x6 DW_TAG_GNU_call_site
.long 128 # DW_AT_abstract_origin
# DW_AT_GNU_tail_call
.byte 4 # DW_AT_low_pc
.byte 0 # End Of Children Mark
.byte 9 # Abbrev [9] 0x80:0x14 DW_TAG_subprogram
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 1 # DW_AT_decl_file
.byte 6 # DW_AT_decl_line
.long 36 # DW_AT_type
# DW_AT_declaration
# DW_AT_external
.byte 10 # Abbrev [10] 0x89:0x5 DW_TAG_formal_parameter
.long 36 # DW_AT_type
.byte 10 # Abbrev [10] 0x8e:0x5 DW_TAG_formal_parameter
.long 36 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 11 # Abbrev [11] 0x94:0x5 DW_TAG_pointer_type
.long 36 # DW_AT_type
.byte 11 # Abbrev [11] 0x99:0x5 DW_TAG_pointer_type
.long 158 # DW_AT_type
.byte 11 # Abbrev [11] 0x9e:0x5 DW_TAG_pointer_type
.long 163 # DW_AT_type
.byte 3 # Abbrev [3] 0xa3:0x4 DW_TAG_base_type
.byte 10 # DW_AT_name
.byte 6 # DW_AT_encoding
.byte 1 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_dwo_end0:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.ascii "\260B" # DW_AT_GNU_dwo_name
.ascii "\202>" # DW_FORM_GNU_str_index
.ascii "\261B" # DW_AT_GNU_dwo_id
.byte 7 # DW_FORM_data8
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.ascii "\201>" # DW_FORM_GNU_addr_index
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.ascii "\227B" # DW_AT_GNU_all_call_sites
.byte 25 # DW_FORM_flag_present
.byte 110 # DW_AT_linkage_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.ascii "\201>" # DW_FORM_GNU_addr_index
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.ascii "\227B" # DW_AT_GNU_all_call_sites
.byte 25 # DW_FORM_flag_present
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 23 # DW_FORM_sec_offset
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 8 # Abbreviation Code
.ascii "\211\202\001" # DW_TAG_GNU_call_site
.byte 0 # DW_CHILDREN_no
.byte 49 # DW_AT_abstract_origin
.byte 19 # DW_FORM_ref4
.ascii "\225B" # DW_AT_GNU_tail_call
.byte 25 # DW_FORM_flag_present
.byte 17 # DW_AT_low_pc
.ascii "\201>" # DW_FORM_GNU_addr_index
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 9 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 110 # DW_AT_linkage_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 3 # DW_AT_name
.ascii "\202>" # DW_FORM_GNU_str_index
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 60 # DW_AT_declaration
.byte 25 # DW_FORM_flag_present
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 10 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 11 # Abbreviation Code
.byte 15 # DW_TAG_pointer_type
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_addr,"",@progbits
.Laddr_table_base0:
.quad x
.quad y
.quad .Lfunc_begin0
.quad .Lfunc_begin1
.quad .Ltmp3
.quad .Ltmp1
.section .debug_gnu_pubnames,"",@progbits
.long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info
.LpubNames_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 48 # Compilation Unit Length
.long 25 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "x" # External Name
.long 40 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "y" # External Name
.long 51 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "use" # External Name
.long 84 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "main" # External Name
.long 0 # End Mark
.LpubNames_end0:
.section .debug_gnu_pubtypes,"",@progbits
.long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info
.LpubTypes_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 48 # Compilation Unit Length
.long 36 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "int" # External Name
.long 163 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "char" # External Name
.long 0 # End Mark
.LpubTypes_end0:
.ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

bolt/test/X86/Inputs/dwarf5-df-call-site-change-low-pc-helper.s

  • This file was added.
# clang++ -O2 -g -gdwarf-4 -gsplit-dwarf
# int z = 0;
# int d = 0;
# int helper(int z_, int d_) {
# z += z_;
# d += d_;
# return z * d;
# }
.text
.file "helper.cpp"
.file 0 "." "helper.cpp" md5 0xb012cefec76132f29ac48b29c7580352
.globl _Z6helperii # -- Begin function _Z6helperii
.p2align 4, 0x90
.type _Z6helperii,@function
_Z6helperii: # @_Z6helperii
.Lfunc_begin0:
.loc 0 3 0 # helper.cpp:3:0
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: helper:z_ <- $edi
#DEBUG_VALUE: helper:d_ <- $esi
movl %esi, %eax
.Ltmp0:
.loc 0 4 4 prologue_end # helper.cpp:4:4
addl z(%rip), %edi
.Ltmp1:
#DEBUG_VALUE: helper:z_ <- [DW_OP_LLVM_entry_value 1] $edi
.loc 0 5 4 # helper.cpp:5:4
addl d(%rip), %eax
.loc 0 4 4 # helper.cpp:4:4
movl %edi, z(%rip)
.loc 0 5 4 # helper.cpp:5:4
movl %eax, d(%rip)
.loc 0 6 11 # helper.cpp:6:11
imull %edi, %eax
.loc 0 6 2 is_stmt 0 # helper.cpp:6:2
retq
.Ltmp2:
.Lfunc_end0:
.size _Z6helperii, .Lfunc_end0-_Z6helperii
.cfi_endproc
# -- End function
.type z,@object # @z
.bss
.globl z
.p2align 2, 0x0
z:
.long 0 # 0x0
.size z, 4
.type d,@object # @d
.globl d
.p2align 2, 0x0
d:
.long 0 # 0x0
.size d, 4
.section .debug_loclists.dwo,"e",@progbits
.long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length
.Ldebug_list_header_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.Ldebug_loc0:
.byte 1 # DW_LLE_base_addressx
.byte 2 # base address index
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp1-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 85 # super-register DW_OP_reg5
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp1-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end0-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 85 # super-register DW_OP_reg5
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_list_header_end0:
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 74 # DW_TAG_skeleton_unit
.byte 0 # DW_CHILDREN_no
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.byte 118 # DW_AT_dwo_name
.byte 37 # DW_FORM_strx1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 5 # DWARF version number
.byte 4 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.quad 6512974040646495267
.byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.byte 0 # DW_AT_comp_dir
# DW_AT_GNU_pubnames
.byte 1 # DW_AT_dwo_name
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.Ldebug_info_end0:
.section .debug_str_offsets,"",@progbits
.long 12 # Length of String Offsets Set
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",@progbits,1
.Lskel_string0:
.asciz "." # string offset=0
.Lskel_string1:
.asciz "helper.dwo" # string offset=47
.section .debug_str_offsets,"",@progbits
.long .Lskel_string0
.long .Lskel_string1
.section .debug_str_offsets.dwo,"e",@progbits
.long 44 # Length of String Offsets Set
.short 5
.short 0
.section .debug_str.dwo,"eMS",@progbits,1
.Linfo_string0:
.asciz "z" # string offset=0
.Linfo_string1:
.asciz "int" # string offset=2
.Linfo_string2:
.asciz "d" # string offset=6
.Linfo_string3:
.asciz "_Z6helperii" # string offset=8
.Linfo_string4:
.asciz "helper" # string offset=20
.Linfo_string5:
.asciz "z_" # string offset=27
.Linfo_string6:
.asciz "d_" # string offset=30
.Linfo_string7:
.asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" # string offset=33
.Linfo_string8:
.asciz "helper.cpp" # string offset=134
.Linfo_string9:
.asciz "helper.dwo" # string offset=145
.section .debug_str_offsets.dwo,"e",@progbits
.long 0
.long 2
.long 6
.long 8
.long 20
.long 27
.long 30
.long 33
.long 134
.long 145
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 5 # DWARF version number
.byte 5 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad 6512974040646495267
.byte 1 # Abbrev [1] 0x14:0x45 DW_TAG_compile_unit
.byte 7 # DW_AT_producer
.short 33 # DW_AT_language
.byte 8 # DW_AT_name
.byte 9 # DW_AT_dwo_name
.byte 2 # Abbrev [2] 0x1a:0xb DW_TAG_variable
.byte 0 # DW_AT_name
.long 37 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 0
.byte 3 # Abbrev [3] 0x25:0x4 DW_TAG_base_type
.byte 1 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x29:0xb DW_TAG_variable
.byte 2 # DW_AT_name
.long 37 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 2 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 1
.byte 4 # Abbrev [4] 0x34:0x24 DW_TAG_subprogram
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_call_all_calls
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 37 # DW_AT_type
# DW_AT_external
.byte 5 # Abbrev [5] 0x44:0x9 DW_TAG_formal_parameter
.byte 0 # DW_AT_location
.byte 5 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 37 # DW_AT_type
.byte 6 # Abbrev [6] 0x4d:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 84
.byte 6 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 3 # DW_AT_decl_line
.long 37 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 0 # End Of Children Mark
.Ldebug_info_dwo_end0:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 118 # DW_AT_dwo_name
.byte 37 # DW_FORM_strx1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 34 # DW_FORM_loclistx
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_addr,"",@progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
.Ldebug_addr_start0:
.short 5 # DWARF version number
.byte 8 # Address size
.byte 0 # Segment selector size
.Laddr_table_base0:
.quad z
.quad d
.quad .Lfunc_begin0
.Ldebug_addr_end0:
.section .debug_gnu_pubnames,"",@progbits
.long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info
.LpubNames_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 40 # Compilation Unit Length
.long 26 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "z" # External Name
.long 41 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "d" # External Name
.long 52 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "helper" # External Name
.long 0 # End Mark
.LpubNames_end0:
.section .debug_gnu_pubtypes,"",@progbits
.long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info
.LpubTypes_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 40 # Compilation Unit Length
.long 37 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "int" # External Name
.long 0 # End Mark
.LpubTypes_end0:
.ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

bolt/test/X86/Inputs/dwarf5-df-call-site-change-low-pc-main.s

  • This file was added.
# clang++ -O2 -g -gdwarf-4 -gsplit-dwarf
# void use(int * x, int * y) {
# *x += 4;
# *y -= 2;
# }
#
# int helper(int z_, int d_);
# int x = 0;
# int y = 1;
# int main(int argc, char *argv[]) {
# x = argc;
# y = argc + 3;
# //use(&x, &y);
# return helper(x, y);
# }
.text
.file "main.cpp"
.file 0 "." "main.cpp" md5 0x1a68208241c6577e68c7b707538826da
.globl _Z3usePiS_ # -- Begin function _Z3usePiS_
.p2align 4, 0x90
.type _Z3usePiS_,@function
_Z3usePiS_: # @_Z3usePiS_
.Lfunc_begin0:
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: use:x <- $rdi
#DEBUG_VALUE: use:y <- $rsi
.loc 0 2 5 prologue_end # main.cpp:2:5
addl $4, (%rdi)
.loc 0 3 5 # main.cpp:3:5
addl $-2, (%rsi)
.loc 0 4 1 # main.cpp:4:1
retq
.Ltmp0:
.Lfunc_end0:
.size _Z3usePiS_, .Lfunc_end0-_Z3usePiS_
.cfi_endproc
# -- End function
.globl main # -- Begin function main
.p2align 4, 0x90
.type main,@function
main: # @main
.Lfunc_begin1:
.cfi_startproc
# %bb.0: # %entry
#DEBUG_VALUE: main:argc <- $edi
#DEBUG_VALUE: main:argv <- $rsi
# kill: def $edi killed $edi def $rdi
.loc 0 10 6 prologue_end # main.cpp:10:6
movl %edi, x(%rip)
.loc 0 11 13 # main.cpp:11:13
leal 3(%rdi), %esi
.Ltmp1:
#DEBUG_VALUE: main:argv <- [DW_OP_LLVM_entry_value 1] $rsi
.loc 0 11 6 is_stmt 0 # main.cpp:11:6
movl %esi, y(%rip)
# kill: def $edi killed $edi killed $rdi
.Ltmp2:
.loc 0 13 11 is_stmt 1 # main.cpp:13:11
jmp _Z6helperii@PLT # TAILCALL
.Ltmp3:
.Lfunc_end1:
.size main, .Lfunc_end1-main
.cfi_endproc
# -- End function
.type x,@object # @x
.bss
.globl x
.p2align 2, 0x0
x:
.long 0 # 0x0
.size x, 4
.type y,@object # @y
.data
.globl y
.p2align 2, 0x0
y:
.long 1 # 0x1
.size y, 4
.section .debug_loclists.dwo,"e",@progbits
.long .Ldebug_list_header_end0-.Ldebug_list_header_start0 # Length
.Ldebug_list_header_start0:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lloclists_table_base0:
.long .Ldebug_loc0-.Lloclists_table_base0
.Ldebug_loc0:
.byte 1 # DW_LLE_base_addressx
.byte 2 # base address index
.byte 4 # DW_LLE_offset_pair
.uleb128 .Lfunc_begin1-.Lfunc_begin0 # starting offset
.uleb128 .Ltmp1-.Lfunc_begin0 # ending offset
.byte 1 # Loc expr size
.byte 84 # DW_OP_reg4
.byte 4 # DW_LLE_offset_pair
.uleb128 .Ltmp1-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end1-.Lfunc_begin0 # ending offset
.byte 4 # Loc expr size
.byte 163 # DW_OP_entry_value
.byte 1 # 1
.byte 84 # DW_OP_reg4
.byte 159 # DW_OP_stack_value
.byte 0 # DW_LLE_end_of_list
.Ldebug_list_header_end0:
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
.byte 74 # DW_TAG_skeleton_unit
.byte 0 # DW_CHILDREN_no
.byte 16 # DW_AT_stmt_list
.byte 23 # DW_FORM_sec_offset
.byte 114 # DW_AT_str_offsets_base
.byte 23 # DW_FORM_sec_offset
.byte 27 # DW_AT_comp_dir
.byte 37 # DW_FORM_strx1
.ascii "\264B" # DW_AT_GNU_pubnames
.byte 25 # DW_FORM_flag_present
.byte 118 # DW_AT_dwo_name
.byte 37 # DW_FORM_strx1
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 115 # DW_AT_addr_base
.byte 23 # DW_FORM_sec_offset
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_info,"",@progbits
.Lcu_begin0:
.long .Ldebug_info_end0-.Ldebug_info_start0 # Length of Unit
.Ldebug_info_start0:
.short 5 # DWARF version number
.byte 4 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long .debug_abbrev # Offset Into Abbrev. Section
.quad 1538385283627936656
.byte 1 # Abbrev [1] 0x14:0x14 DW_TAG_skeleton_unit
.long .Lline_table_start0 # DW_AT_stmt_list
.long .Lstr_offsets_base0 # DW_AT_str_offsets_base
.byte 0 # DW_AT_comp_dir
# DW_AT_GNU_pubnames
.byte 1 # DW_AT_dwo_name
.byte 2 # DW_AT_low_pc
.long .Lfunc_end1-.Lfunc_begin0 # DW_AT_high_pc
.long .Laddr_table_base0 # DW_AT_addr_base
.Ldebug_info_end0:
.section .debug_str_offsets,"",@progbits
.long 12 # Length of String Offsets Set
.short 5
.short 0
.Lstr_offsets_base0:
.section .debug_str,"MS",@progbits,1
.Lskel_string0:
.asciz "." # string offset=0
.Lskel_string1:
.asciz "main.dwo" # string offset=47
.section .debug_str_offsets,"",@progbits
.long .Lskel_string0
.long .Lskel_string1
.section .debug_str_offsets.dwo,"e",@progbits
.long 60 # Length of String Offsets Set
.short 5
.short 0
.section .debug_str.dwo,"eMS",@progbits,1
.Linfo_string0:
.asciz "x" # string offset=0
.Linfo_string1:
.asciz "int" # string offset=2
.Linfo_string2:
.asciz "y" # string offset=6
.Linfo_string3:
.asciz "_Z6helperii" # string offset=8
.Linfo_string4:
.asciz "helper" # string offset=20
.Linfo_string5:
.asciz "_Z3usePiS_" # string offset=27
.Linfo_string6:
.asciz "use" # string offset=38
.Linfo_string7:
.asciz "main" # string offset=42
.Linfo_string8:
.asciz "argc" # string offset=47
.Linfo_string9:
.asciz "argv" # string offset=52
.Linfo_string10:
.asciz "char" # string offset=57
.Linfo_string11:
.asciz "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)" # string offset=62
.Linfo_string12:
.asciz "main.cpp" # string offset=163
.Linfo_string13:
.asciz "main.dwo" # string offset=172
.section .debug_str_offsets.dwo,"e",@progbits
.long 0
.long 2
.long 6
.long 8
.long 20
.long 27
.long 38
.long 42
.long 47
.long 52
.long 57
.long 62
.long 163
.long 172
.section .debug_info.dwo,"e",@progbits
.long .Ldebug_info_dwo_end0-.Ldebug_info_dwo_start0 # Length of Unit
.Ldebug_info_dwo_start0:
.short 5 # DWARF version number
.byte 5 # DWARF Unit Type
.byte 8 # Address Size (in bytes)
.long 0 # Offset Into Abbrev. Section
.quad 1538385283627936656
.byte 1 # Abbrev [1] 0x14:0x8e DW_TAG_compile_unit
.byte 11 # DW_AT_producer
.short 33 # DW_AT_language
.byte 12 # DW_AT_name
.byte 13 # DW_AT_dwo_name
.byte 2 # Abbrev [2] 0x1a:0xb DW_TAG_variable
.byte 0 # DW_AT_name
.long 37 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 7 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 0
.byte 3 # Abbrev [3] 0x25:0x4 DW_TAG_base_type
.byte 1 # DW_AT_name
.byte 5 # DW_AT_encoding
.byte 4 # DW_AT_byte_size
.byte 2 # Abbrev [2] 0x29:0xb DW_TAG_variable
.byte 2 # DW_AT_name
.long 37 # DW_AT_type
# DW_AT_external
.byte 0 # DW_AT_decl_file
.byte 8 # DW_AT_decl_line
.byte 2 # DW_AT_location
.byte 161
.byte 1
.byte 4 # Abbrev [4] 0x34:0x21 DW_TAG_subprogram
.byte 2 # DW_AT_low_pc
.long .Lfunc_end0-.Lfunc_begin0 # DW_AT_high_pc
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_call_all_calls
.byte 5 # DW_AT_linkage_name
.byte 6 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
# DW_AT_external
.byte 5 # Abbrev [5] 0x40:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 85
.byte 0 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 142 # DW_AT_type
.byte 5 # Abbrev [5] 0x4a:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 84
.byte 2 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 1 # DW_AT_decl_line
.long 142 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 6 # Abbrev [6] 0x55:0x25 DW_TAG_subprogram
.byte 0 # DW_AT_ranges
.byte 1 # DW_AT_frame_base
.byte 87
# DW_AT_call_all_calls
.byte 7 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 37 # DW_AT_type
# DW_AT_external
.byte 5 # Abbrev [5] 0x60:0xa DW_TAG_formal_parameter
.byte 1 # DW_AT_location
.byte 85
.byte 8 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 37 # DW_AT_type
.byte 7 # Abbrev [7] 0x6a:0x9 DW_TAG_formal_parameter
.byte 0 # DW_AT_location
.byte 9 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 9 # DW_AT_decl_line
.long 147 # DW_AT_type
.byte 8 # Abbrev [8] 0x73:0x6 DW_TAG_call_site
.long 122 # DW_AT_call_origin
# DW_AT_call_tail_call
.byte 3 # DW_AT_call_pc
.byte 0 # End Of Children Mark
.byte 9 # Abbrev [9] 0x7a:0x14 DW_TAG_subprogram
.byte 3 # DW_AT_linkage_name
.byte 4 # DW_AT_name
.byte 0 # DW_AT_decl_file
.byte 6 # DW_AT_decl_line
.long 37 # DW_AT_type
# DW_AT_declaration
# DW_AT_external
.byte 10 # Abbrev [10] 0x83:0x5 DW_TAG_formal_parameter
.long 37 # DW_AT_type
.byte 10 # Abbrev [10] 0x88:0x5 DW_TAG_formal_parameter
.long 37 # DW_AT_type
.byte 0 # End Of Children Mark
.byte 11 # Abbrev [11] 0x8e:0x5 DW_TAG_pointer_type
.long 37 # DW_AT_type
.byte 11 # Abbrev [11] 0x93:0x5 DW_TAG_pointer_type
.long 152 # DW_AT_type
.byte 11 # Abbrev [11] 0x98:0x5 DW_TAG_pointer_type
.long 157 # DW_AT_type
.byte 3 # Abbrev [3] 0x9d:0x4 DW_TAG_base_type
.byte 10 # DW_AT_name
.byte 6 # DW_AT_encoding
.byte 1 # DW_AT_byte_size
.byte 0 # End Of Children Mark
.Ldebug_info_dwo_end0:
.section .debug_abbrev.dwo,"e",@progbits
.byte 1 # Abbreviation Code
.byte 17 # DW_TAG_compile_unit
.byte 1 # DW_CHILDREN_yes
.byte 37 # DW_AT_producer
.byte 37 # DW_FORM_strx1
.byte 19 # DW_AT_language
.byte 5 # DW_FORM_data2
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 118 # DW_AT_dwo_name
.byte 37 # DW_FORM_strx1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 2 # Abbreviation Code
.byte 52 # DW_TAG_variable
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 3 # Abbreviation Code
.byte 36 # DW_TAG_base_type
.byte 0 # DW_CHILDREN_no
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 62 # DW_AT_encoding
.byte 11 # DW_FORM_data1
.byte 11 # DW_AT_byte_size
.byte 11 # DW_FORM_data1
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 4 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 17 # DW_AT_low_pc
.byte 27 # DW_FORM_addrx
.byte 18 # DW_AT_high_pc
.byte 6 # DW_FORM_data4
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 5 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 24 # DW_FORM_exprloc
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 6 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 85 # DW_AT_ranges
.byte 35 # DW_FORM_rnglistx
.byte 64 # DW_AT_frame_base
.byte 24 # DW_FORM_exprloc
.byte 122 # DW_AT_call_all_calls
.byte 25 # DW_FORM_flag_present
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 7 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 2 # DW_AT_location
.byte 34 # DW_FORM_loclistx
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 8 # Abbreviation Code
.byte 72 # DW_TAG_call_site
.byte 0 # DW_CHILDREN_no
.byte 127 # DW_AT_call_origin
.byte 19 # DW_FORM_ref4
.ascii "\202\001" # DW_AT_call_tail_call
.byte 25 # DW_FORM_flag_present
.ascii "\201\001" # DW_AT_call_pc
.byte 27 # DW_FORM_addrx
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 9 # Abbreviation Code
.byte 46 # DW_TAG_subprogram
.byte 1 # DW_CHILDREN_yes
.byte 110 # DW_AT_linkage_name
.byte 37 # DW_FORM_strx1
.byte 3 # DW_AT_name
.byte 37 # DW_FORM_strx1
.byte 58 # DW_AT_decl_file
.byte 11 # DW_FORM_data1
.byte 59 # DW_AT_decl_line
.byte 11 # DW_FORM_data1
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 60 # DW_AT_declaration
.byte 25 # DW_FORM_flag_present
.byte 63 # DW_AT_external
.byte 25 # DW_FORM_flag_present
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 10 # Abbreviation Code
.byte 5 # DW_TAG_formal_parameter
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 11 # Abbreviation Code
.byte 15 # DW_TAG_pointer_type
.byte 0 # DW_CHILDREN_no
.byte 73 # DW_AT_type
.byte 19 # DW_FORM_ref4
.byte 0 # EOM(1)
.byte 0 # EOM(2)
.byte 0 # EOM(3)
.section .debug_rnglists.dwo,"e",@progbits
.long .Ldebug_list_header_end1-.Ldebug_list_header_start1 # Length
.Ldebug_list_header_start1:
.short 5 # Version
.byte 8 # Address size
.byte 0 # Segment selector size
.long 1 # Offset entry count
.Lrnglists_dwo_table_base0:
.long .Ldebug_ranges0-.Lrnglists_dwo_table_base0
.Ldebug_ranges0:
.byte 4 # DW_RLE_offset_pair
.uleb128 .Lfunc_begin1-.Lfunc_begin0 # starting offset
.uleb128 .Lfunc_end1-.Lfunc_begin0 # ending offset
.byte 0 # DW_RLE_end_of_list
.Ldebug_list_header_end1:
.section .debug_addr,"",@progbits
.long .Ldebug_addr_end0-.Ldebug_addr_start0 # Length of contribution
.Ldebug_addr_start0:
.short 5 # DWARF version number
.byte 8 # Address size
.byte 0 # Segment selector size
.Laddr_table_base0:
.quad x
.quad y
.quad .Lfunc_begin0
.quad .Ltmp2
.Ldebug_addr_end0:
.section .debug_gnu_pubnames,"",@progbits
.long .LpubNames_end0-.LpubNames_start0 # Length of Public Names Info
.LpubNames_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 40 # Compilation Unit Length
.long 26 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "x" # External Name
.long 41 # DIE offset
.byte 32 # Attributes: VARIABLE, EXTERNAL
.asciz "y" # External Name
.long 52 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "use" # External Name
.long 85 # DIE offset
.byte 48 # Attributes: FUNCTION, EXTERNAL
.asciz "main" # External Name
.long 0 # End Mark
.LpubNames_end0:
.section .debug_gnu_pubtypes,"",@progbits
.long .LpubTypes_end0-.LpubTypes_start0 # Length of Public Types Info
.LpubTypes_start0:
.short 2 # DWARF Version
.long .Lcu_begin0 # Offset of Compilation Unit Info
.long 40 # Compilation Unit Length
.long 37 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "int" # External Name
.long 157 # DIE offset
.byte 144 # Attributes: TYPE, STATIC
.asciz "char" # External Name
.long 0 # End Mark
.LpubTypes_end0:
.ident "clang version 18.0.0 (git@github.com:llvm/llvm-project.git 3a8db0f4bfb57348f49d9603119fa157114bbf8e)"
.section ".note.GNU-stack","",@progbits
.addrsig
.section .debug_line,"",@progbits
.Lline_table_start0:

bolt/test/X86/dwarf4-df-call-site-change-low-pc.test

  • This file was added.
; RUN: rm -rf %t
; RUN: mkdir %t
; RUN: cd %t
; RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf4-df-call-site-change-low-pc-main.s \
; RUN: -split-dwarf-file=main.dwo -o main.o
; RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf4-df-call-site-change-low-pc-helper.s \
; RUN: -split-dwarf-file=helper.dwo -o helper.o
; RUN: %clang %cflags -gdwarf-4 -O2 -gsplit-dwarf=split main.o helper.o -o main.exe
; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections
; RUN: llvm-dwarfdump --show-form --verbose --debug-info main.dwo &> %t/maindwo.txt
; RUN: cat %t/maindwo.txt | FileCheck -check-prefix=PRE-BOLT-DWO-MAIN %s
; RUN: llvm-dwarfdump --show-form --verbose --debug-info main.dwo.dwo &> %t/maindwodwo.txt
; RUN: cat %t/maindwodwo.txt | FileCheck -check-prefix=BOLT-DWO-MAIN %s
; Tests that DW_AT_low_pc changes in DW_TAG_GNU_call_site.
; PRE-BOLT-DWO-MAIN: version = 0x0004
; PRE-BOLT-DWO-MAIN: DW_TAG_GNU_call_site
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_abstract_origin
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_GNU_tail_call
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_low_pc [DW_FORM_GNU_addr_index] (indexed (00000004)
; BOLT-DWO-MAIN: version = 0x0004
; BOLT-DWO-MAIN: DW_TAG_GNU_call_site
; BOLT-DWO-MAIN-NEXT: DW_AT_abstract_origin
; BOLT-DWO-MAIN-NEXT: DW_AT_GNU_tail_call
; BOLT-DWO-MAIN-NEXT: DW_AT_low_pc [DW_FORM_GNU_addr_index] (indexed (00000005)

bolt/test/X86/dwarf5-df-call-site-change-low-pc.test

  • This file was added.
; RUN: rm -rf %t
; RUN: mkdir %t
; RUN: cd %t
; RUN: llvm-mc -dwarf-version=4 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-df-call-site-change-low-pc-main.s \
; RUN: -split-dwarf-file=main.dwo -o main.o
; RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %p/Inputs/dwarf5-df-call-site-change-low-pc-helper.s \
; RUN: -split-dwarf-file=helper.dwo -o helper.o
; RUN: %clang %cflags -gdwarf-5 -O2 -gsplit-dwarf=split main.o helper.o -o main.exe
; RUN: llvm-bolt main.exe -o main.exe.bolt --update-debug-sections
; RUN: llvm-dwarfdump --show-form --verbose --debug-info main.dwo &> %t/maindwo.txt
; RUN: cat %t/maindwo.txt | FileCheck -check-prefix=PRE-BOLT-DWO-MAIN %s
; RUN: llvm-dwarfdump --show-form --verbose --debug-info main.dwo.dwo &> %t/maindwodwo.txt
; RUN: cat %t/maindwodwo.txt | FileCheck -check-prefix=BOLT-DWO-MAIN %s
; Tests that DW_AT_low_pc changes in DW_TAG_call_site.
; PRE-BOLT-DWO-MAIN: version = 0x0005
; PRE-BOLT-DWO-MAIN: DW_TAG_call_site
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_call_origin
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_call_tail_call
; PRE-BOLT-DWO-MAIN-NEXT: DW_AT_call_pc [DW_FORM_addrx] (indexed (00000003)
; BOLT-DWO-MAIN: version = 0x0005
; BOLT-DWO-MAIN: DW_TAG_call_site
; BOLT-DWO-MAIN-NEXT: DW_AT_call_origin
; BOLT-DWO-MAIN-NEXT: DW_AT_call_tail_call
; BOLT-DWO-MAIN-NEXT: DW_AT_call_pc [DW_FORM_addrx] (indexed (00000004)