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llvm-project/bolt/test/non-empty-debug-line.test

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[BOLT][DWARF] Force allocation of debug_line in RuntimeDyld Summary: Currently, RuntimeDyld will not allocate a section without relocations even if such a section is marked allocatable and defines symbols. When we emit .debug_line for compile units with unchanged code, we output original (input) data, without relocations. If all units are emitted in this way, we will have no relocations in the emitted .debug_line. RuntimeDyld will not allocate the section and as a result we will write an empty .debug_line section. To workaround the issue, always emit a relocation of RELOC_NONE type when emitting raw contents to debug_line. (cherry picked from FBD32909869)
2021-12-07 15:32:40 +08:00
# Verifies that BOLT emits DWARF line table with the same size if
# no functions with debug info were modified.
Re-enable Windows build and fix issues Summary: Fix missing string header file inclusion and link_fdata find problem in lit tests. Change root-level tests to require linux. Re-enable Windows in our root CMakeLists.txt. (cherry picked from FBD33296290)
2021-12-23 21:59:35 +08:00
REQUIRES: system-linux
DWARFv5 default: Switch bolt tests to use DWARFv4 since Bolt doesn't support v5 yet Rough attempt to fix these, since I don't have bolt building locally. Will see how the buildbots go with it...
2022-01-25 07:02:49 +08:00
RUN: %clang %S/Inputs/hello.c -gdwarf-4 -o %t
[BOLT][DWARF] Force allocation of debug_line in RuntimeDyld Summary: Currently, RuntimeDyld will not allocate a section without relocations even if such a section is marked allocatable and defines symbols. When we emit .debug_line for compile units with unchanged code, we output original (input) data, without relocations. If all units are emitted in this way, we will have no relocations in the emitted .debug_line. RuntimeDyld will not allocate the section and as a result we will write an empty .debug_line section. To workaround the issue, always emit a relocation of RELOC_NONE type when emitting raw contents to debug_line. (cherry picked from FBD32909869)
2021-12-07 15:32:40 +08:00
RUN: llvm-bolt %t -o %t1 -update-debug-sections -funcs=_start
RUN: llvm-readobj -S %t > %t2
RUN: llvm-readobj -S %t1 >> %t2
RUN: FileCheck %s --input-file %t2
# Check the input and grab .debug_line size.
CHECK: File:
CHECK: Name: .debug_line
CHECK: Size: [[SIZE:[0-9]+]]
# Verify .debug_line size is the same after BOLT.
CHECK: File:
CHECK: Name: .debug_line
CHECK: Size:
CHECK-SAME: [[SIZE]]