When you set a "next branch breakpoint" and run to it while stepping,
you have to claim the stop at that breakpoint to be the top of the
inlined call stack, or you will seem to "step in" and then plans might
try to step back out again.
This records the PrefferedLineEntry for next branch breakpoints and adds
a test to make sure this works.
The test is currently passing everywhere but this 32-bit arm ubuntu bot.
I don't have an easy way to debug this, so I'm skipping the test on that
platform till we get a chance to figure this out.
The computation of 'Thread::IsVirtualStep" was wrong - it called being
at the bottom of a virtual call stack a "virtual step" but that is
actually when you've gotten to concrete code and need to step for real.
I also added a test for this.
This fixes the two test suite failures that I missed in the PR:
https://github.com/llvm/llvm-project/pull/112939
One was a poorly written test case - it assumed that on connect to a
gdb-remote with a running process, lldb MUST have fetched all the frame
0 registers. In fact, there's no need for it to do so (as the CallSite
patch showed...) and if we don't need to we shouldn't. So I fixed the
test to only expect a `g` packet AFTER calling read_registers.
The other was a place where some code had used 0 when it meant
LLDB_INVALID_LINE_NUMBER, which I had fixed but missed one place where
it was still compared to 0.
…ne stepping (#112939)"
This was breaking some gdb-remote packet counting tests on the bots. I
can't see how this patch could cause that breakage, but I'm reverting to
figure that out.
This reverts commit f14743794587db102c6d1b20f9c87a1ac20decfd.
Previously lldb didn't support setting breakpoints on call site
locations. This patch adds that ability.
It would be very slow if we did this by searching all the debug
information for every inlined subroutine record looking for a call-site
match, so I added one restriction to the call-site support. This change
will find all call sites for functions that also supply at least one
line to the regular line table. That way we can use the fact that the
line table search will move the location to that subsequent line (but
only within the same function). When we find an actually moved source
line match, we can search in the function that contained that line table
entry for the call-site, and set the breakpoint location back to that.
When I started writing tests for this new ability, it quickly became
obvious that our support for virtual inline stepping was pretty buggy.
We didn't print the right file & line number for the breakpoint, and we
didn't set the position in the "virtual inlined stack" correctly when we
hit the breakpoint. We also didn't step through the inlined frames
correctly. There was code to try to detect the right inlined stack
position, but it had been refactored a while back with the comment that
it was super confusing and the refactor was supposed to make it clearer,
but the refactor didn't work either.
That code was made much clearer by abstracting the job of "handling the
stack readjustment" to the various StopInfo's. Previously, there was a
big (and buggy) switch over stop info's. Moving the responsibility to
the stop info made this code much easier to reason about.
We also had no tests for virtual inlined stepping (our inlined stepping
test was actually written specifically to avoid the formation of a
virtual inlined stack... So I also added tests for that along with the
tests for setting the call-site breakpoints.
This fix is based on a problem with cxx_compiler and cxx_linker macros
on Windows.
There was an issue with compiler detection in paths containing "icc". In
such case, Makefile.rules thought it was provided with icc compiler.
To solve that, utilities detection has been rewritten in Python.
The last element of compiler's path is separated, taking into account
the platform path delimiter, and compiler type is extracted, with regard
of possible cross-toolchain prefix.
---------
Co-authored-by: Pavel Labath <pavel@labath.sk>
All Python files in the LLVM repository were reformatted with Black [1].
Files inside the LLDB subproject were reformatted in 2238dcc39358. This
patch updates a handful of tests that were added or modified since then
and weren't formatted with Black.
[1] https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style/68257
This is an ongoing series of commits that are reformatting our Python
code. Reformatting is done with `black` (23.1.0).
If you end up having problems merging this commit because you have made
changes to a python file, the best way to handle that is to run `git
checkout --ours <yourfile>` and then reformat it with black.
RFC: https://discourse.llvm.org/t/rfc-document-and-standardize-python-code-style
Differential revision: https://reviews.llvm.org/D151460
This patch add or removes XFAIL decorator from various tests which were marked
xfail for windows.
since 44363f2 various tests have started passing but introduced a couple of new failures.
Weight is in favor of new XPasses and I have removed XFail decorator from them. Also
some new tests have started failing for which we need to file separate bugs. I have
marked them xfail for now and will add the bug id after investigating the issue.
Differential Revision: https://reviews.llvm.org/D149235
Eliminate boilerplate of having each test manually assign to `mydir` by calling
`compute_mydir` in lldbtest.py.
Differential Revision: https://reviews.llvm.org/D128077
Summary:
TestInlineStepping tests LLDB's ability to step in the presence of
inline frames. The testcase source has a number of functions and some
of them are marked `always_inline`.
The test is built around the assumption that the inline function will
be fully represented once inlined, but this is not true with the
current arm64 code generation. For example:
void caller() {
always_inline_function(); // Step here
}
When stppeing into `caller()` above, you might immediatly end up in
the inlines frame for `always_inline_function()`, because there might
literally be no code associated with `caller()` itself.
This patch hacks around the issue by adding an `asm volatile("nop")`
on some lines with inlined calls where we expect to be able to
step. Like so:
void caller() {
asm volatile("nop"); always_inline_function(); // Step here
}
This guarantees there is always going to be one instruction for this
line in the caller.
Reviewers: labath, jingham
Subscribers: kristof.beyls, danielkiss, lldb-commits
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D76406
Summary: Moves lldbsuite tests to lldb/test/API.
This is a largely mechanical change, moved with the following steps:
```
rm lldb/test/API/testcases
mkdir -p lldb/test/API/{test_runner/test,tools/lldb-{server,vscode}}
mv lldb/packages/Python/lldbsuite/test/test_runner/test lldb/test/API/test_runner
for d in $(find lldb/packages/Python/lldbsuite/test/* -maxdepth 0 -type d | egrep -v "make|plugins|test_runner|tools"); do mv $d lldb/test/API; done
for d in $(find lldb/packages/Python/lldbsuite/test/tools/lldb-vscode -maxdepth 1 -mindepth 1 | grep -v ".py"); do mv $d lldb/test/API/tools/lldb-vscode; done
for d in $(find lldb/packages/Python/lldbsuite/test/tools/lldb-server -maxdepth 1 -mindepth 1 | egrep -v "gdbremote_testcase.py|lldbgdbserverutils.py|socket_packet_pump.py"); do mv $d lldb/test/API/tools/lldb-server; done
```
lldb/packages/Python/lldbsuite/__init__.py and lldb/test/API/lit.cfg.py were also updated with the new directory structure.
Reviewers: labath, JDevlieghere
Tags: #lldb
Differential Revision: https://reviews.llvm.org/D71151
