llvm-project.git/llvm/lib/CodeGen/JMCInstrumenter.cpp, branch users/nico/python-2

[NFC][RemoveDIs] Use iterators for insertion at various call-sites (#84736)

2024-03-19T16:36:29+00:00

These are the last remaining "trivial" changes to passes that use
Instruction pointers for insertion. All of this should be NFC, it's just
changing the spelling of how we identify a position.

In one or two locations, I'm also switching uses of getNextNode etc to
using std::next with iterators. This too should be NFC.

---------

Merged by: Stephen Tozer

[CodeGen] Port `JMCInstrumenter` to new pass manager (#75049)

2023-12-12T01:00:44+00:00

[llvm] Drop some more typed pointer bitcasts etc.

2023-08-13T14:46:56+00:00

[JMCInstrument] rename ELF section name from ".just.my.code" to ".data.just.my.code"

2022-10-19T17:49:54+00:00

This gives linker scripts a hint about where to place the section.

[CodeGen] Use StringRef::contains (NFC)

2022-06-05T03:58:58+00:00

[JMCInstrument] infer proper path style based on debug info

2022-03-10T18:50:44+00:00

By default, the path style is decided by the host. This patch makes JMC
uses the path style used by the SP directory. This makes JMC output
host-independent.

Fixes: https://github.com/llvm/llvm-project/issues/54219

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D121236

Reland "[clang][debug] port clang-cl /JMC flag to ELF"

2022-03-08T05:55:41+00:00

This relands commit 731347431976509823e38329a96fcbc69fe98cd2.

It failed on Windows/Mac because `-fjmc` is only checked for ELF targets.
Check the flag unconditionally instead and issue a warning for non-ELF targets.

Revert "[clang][debug] port clang-cl /JMC flag to ELF"

2022-03-07T20:40:43+00:00

This reverts commit 731347431976509823e38329a96fcbc69fe98cd2.

Break bots:
http://45.33.8.238/win/54551/step_7.txt
http://45.33.8.238/macm1/29590/step_7.txt

[clang][debug] port clang-cl /JMC flag to ELF

2022-03-07T18:16:24+00:00

The motivation is to enable the MSVC-style JMC instrumentation usable by a ELF-based
debugger. Since there is no prior experience implementing JMC feature for ELF-based
debugger, it might be better to just reuse existing MSVC-style JMC instrumentation.
For debuggers that support both ELF&COFF (like lldb), the JMC implementation might
be shared between ELF&COFF. If this is found to inadequate, it is pretty low-cost
switching to alternatives.

Implementation:
- The '-fjmc' is already a driver and cc1 flag. Wire it up for ELF in the driver.
- Refactor the JMC instrumentation pass a little bit.
- The ELF handling is different from MSVC in two places:
  * the flag section name is ".just.my.code" instead of ".msvcjmc"
  * the way default function is provided: MSVC uses /alternatename; ELF uses weak function.

Based on D118428.

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D119910

Reland "[clang-cl] Support the /JMC flag"

2022-02-10T23:16:17+00:00

This relands commit b380a31de084a540cfa38b72e609b25ea0569bb7.

Restrict the tests to Windows only since the flag symbol hash depends on
system-dependent path normalization.