llvm-capstone/bolt/test/X86/dwarf5-rangeoffset-to-rangeindex.s
Alexander Yermolovich 75f770a68f [BOLT][DWARF] Update handling of size 1 ranges and fix sub-programs with ranges
When output range is only one entry, and input is low_pc/high_pc do not convert
to ranges. This helps with size of .debug_ranges/.debug_rnglists. It also helps
when either low_pc/high_pc is 0. We not generating potentially invalid ranges
that result in LLDB error.

Also fixed handling of DW_AT_subprogram with ranges. This can be created with
-fbasic-block-sections=all.

Reviewed By: maksfb

Differential Revision: https://reviews.llvm.org/D156374
2023-07-30 17:32:32 -07:00

262 lines
4.7 KiB
ArmAsm

# REQUIRES: system-linux
# RUN: llvm-mc -dwarf-version=5 -filetype=obj -triple x86_64-unknown-linux %s -o %t1.o
# RUN: %clang %cflags -dwarf-5 %t1.o -o %t.exe -Wl,-q
# RUN: llvm-bolt %t.exe -o %t.bolt --update-debug-sections --always-convert-to-ranges
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.exe | FileCheck --check-prefix=PRECHECK %s
# RUN: llvm-dwarfdump --show-form --verbose --debug-addr %t.bolt > %t.txt
# RUN: llvm-dwarfdump --show-form --verbose --debug-info %t.bolt >> %t.txt
# RUN: cat %t.txt | FileCheck --check-prefix=POSTCHECK %s
# This tests conversion for DWARF5 ranges DW_AT_ranges [DW_FORM_sec_offset] to DW_AT_ranges [DW_FORM_rnglistx]
# PRECHECK: version = 0x0005
# PRECHECK: DW_AT_ranges [DW_FORM_sec_offset]
# POSTCHECK: Addrs: [
# POSTCHECK-NEXT: 0x[[#%.16x,ADDR:]]
# POSTCHECK-NEXT: 0x[[#%.16x,ADDR1:]]
# POSTCHECK: version = 0x0005
# POSTCHECK: DW_AT_ranges [DW_FORM_rnglistx]
# POSTCHECK-SAME: (indexed (0x0) rangelist = 0x00000018
# POSTCHECK-NEXT: [0x[[#ADDR]], 0x[[#ADDR + 11]]
# POSTCHECK-NEXT: [0x[[#ADDR1]], 0x[[#ADDR1 + 11]]
# POSTCHECK-NEXT: DW_AT_low_pc [DW_FORM_addr]
# POSTCHECK-NEXT: DW_AT_stmt_list [DW_FORM_sec_offset]
# POSTCHECK-NEXT: DW_AT_rnglists_base [DW_FORM_sec_offset] (0x0000000c)
# POSTCHECK-NEXT: DW_AT_addr_base [DW_FORM_sec_offset] (0x00000008)
# int foo() {
# return 3;
# }
#
# int main() {
# return foo();
# }
.file "main.cpp"
.text
.Ltext0:
.file 0 "/testRangeOffsetToRangeX" "main.cpp"
.section .text._Z3foov,"ax",@progbits
.globl _Z3foov
.type _Z3foov, @function
_Z3foov:
.LFB0:
.file 1 "main.cpp"
.loc 0 1 11
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
.loc 0 2 10
movl $3, %eax
.loc 0 3 1
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE0:
.size _Z3foov, .-_Z3foov
.section .text.main,"ax",@progbits
.globl main
.type main, @function
main:
.LFB1:
.loc 0 5 12
.cfi_startproc
pushq %rbp
.cfi_def_cfa_offset 16
.cfi_offset 6, -16
movq %rsp, %rbp
.cfi_def_cfa_register 6
.loc 0 6 13
call _Z3foov
.loc 0 6 14
nop
.loc 0 7 1
popq %rbp
.cfi_def_cfa 7, 8
ret
.cfi_endproc
.LFE1:
.size main, .-main
.text
.Letext0:
.section .debug_info,"",@progbits
.Ldebug_info0:
.long 0x6e
.value 0x5
.byte 0x1
.byte 0x8
.long .Ldebug_abbrev0
.uleb128 0x1
.long .LASF2
.byte 0x21
.long .LASF0
.long .LASF1
.long .LLRL0
.quad 0
.long .Ldebug_line0
.uleb128 0x2
.long .LASF3
.byte 0x1
.byte 0x5
.byte 0x5
.long 0x48
.quad .LFB1
.quad .LFE1-.LFB1
.uleb128 0x1
.byte 0x9c
.uleb128 0x3
.byte 0x4
.byte 0x5
.string "int"
.uleb128 0x4
.string "foo"
.byte 0x1
.byte 0x1
.byte 0x5
.long .LASF4
.long 0x48
.quad .LFB0
.quad .LFE0-.LFB0
.uleb128 0x1
.byte 0x9c
.byte 0
.section .debug_abbrev,"",@progbits
.Ldebug_abbrev0:
.uleb128 0x1
.uleb128 0x11
.byte 0x1
.uleb128 0x25
.uleb128 0xe
.uleb128 0x13
.uleb128 0xb
.uleb128 0x3
.uleb128 0x1f
.uleb128 0x1b
.uleb128 0x1f
.uleb128 0x55
.uleb128 0x17
.uleb128 0x11
.uleb128 0x1
.uleb128 0x10
.uleb128 0x17
.byte 0
.byte 0
.uleb128 0x2
.uleb128 0x2e
.byte 0
.uleb128 0x3f
.uleb128 0x19
.uleb128 0x3
.uleb128 0xe
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x39
.uleb128 0xb
.uleb128 0x49
.uleb128 0x13
.uleb128 0x11
.uleb128 0x1
.uleb128 0x12
.uleb128 0x7
.uleb128 0x40
.uleb128 0x18
.uleb128 0x7c
.uleb128 0x19
.byte 0
.byte 0
.uleb128 0x3
.uleb128 0x24
.byte 0
.uleb128 0xb
.uleb128 0xb
.uleb128 0x3e
.uleb128 0xb
.uleb128 0x3
.uleb128 0x8
.byte 0
.byte 0
.uleb128 0x4
.uleb128 0x2e
.byte 0
.uleb128 0x3f
.uleb128 0x19
.uleb128 0x3
.uleb128 0x8
.uleb128 0x3a
.uleb128 0xb
.uleb128 0x3b
.uleb128 0xb
.uleb128 0x39
.uleb128 0xb
.uleb128 0x6e
.uleb128 0xe
.uleb128 0x49
.uleb128 0x13
.uleb128 0x11
.uleb128 0x1
.uleb128 0x12
.uleb128 0x7
.uleb128 0x40
.uleb128 0x18
.uleb128 0x7a
.uleb128 0x19
.byte 0
.byte 0
.byte 0
.section .debug_aranges,"",@progbits
.long 0x3c
.value 0x2
.long .Ldebug_info0
.byte 0x8
.byte 0
.value 0
.value 0
.quad .LFB0
.quad .LFE0-.LFB0
.quad .LFB1
.quad .LFE1-.LFB1
.quad 0
.quad 0
.section .debug_rnglists,"",@progbits
.Ldebug_ranges0:
.long .Ldebug_ranges3-.Ldebug_ranges2
.Ldebug_ranges2:
.value 0x5
.byte 0x8
.byte 0
.long 0
.LLRL0:
.byte 0x7
.quad .LFB0
.uleb128 .LFE0-.LFB0
.byte 0x7
.quad .LFB1
.uleb128 .LFE1-.LFB1
.byte 0
.Ldebug_ranges3:
.section .debug_line,"",@progbits
.Ldebug_line0:
.section .debug_str,"MS",@progbits,1
.LASF4:
.string "_Z3foov"
.LASF3:
.string "main"
.LASF2:
.string "GNU C++17 11.x"
.section .debug_line_str,"MS",@progbits,1
.LASF0:
.string "main.cpp"
.LASF1:
.string "/testRangeOffsetToRangeX"
.ident "GCC: (GNU) 11.x"
.section .note.GNU-stack,"",@progbits