This reapplies c0f3dfb9, which was reverted following the discovery of
crashes on linux kernel and chromium builds - these issues have since
been fixed, allowing this patch to re-land.
This reverts commit 4397b7095d640f9b9426c4d0135e999c5a1de1c5.
.byte supports string, so if the whole byte list are printable,
we can actually print the string for readability and LIT tests maintainence.
.byte 'H,'e,'l,'l,'o,',,' ,'w,'o,'r,'l,'d
->
.byte "Hello, world"
Reviewed By: hubert.reinterpretcast
Differential Revision: https://reviews.llvm.org/D102814
Currently, variadic dbg.values (i.e. those using a DIArgList as part of
their location) are not handled properly by FastISel or GlobalISel, and
will produce invalid DBG_VALUE instructions if they encounter them. This
patch fixes this issue by emitting undef DBG_VALUE instructions for
variadic dbg.values, so that no incorrect instruction is produced and
any prior variable location is terminated.
This is simply a quick-fix to prevent errors; a correct implementation
should come later for these ISel pipelines to ensure that we do not drop
debug information unnecessarily.
Differential Revision: https://reviews.llvm.org/D102500
Previous crashes caused by this patch were the result of machine
subregisters being incorrectly handled in updateDbgUsersToReg; this has
been fixed by using RegUnits to determine overlapping registers, instead
of using the register values directly.
Differential Revision: https://reviews.llvm.org/D101523
This reverts commit 7ca26c5fa2df253878cab22e1e2f0d6f1b481218.
Reapply b623df3c, which was reverted while reverting a different patch
with a breaking change. There are no underlying issues with this patch,
so no changes have been made to the original patch.
This reverts commit b11e4c990771541e440861f017afea7b4ba162f4.
This patch is a fix for revision ce0c1f3c, which caused test failures on
bots without x86 as a registered target. This patch moves the test added
in the prior patch to the x86 folder, so that it only runs on bots with
the correct target available.
This patch fixes a crash in the compiler that occurs when certain
invalidated SDDbgValues are emitted. The cause of this was that we would
attempt to check the liveness of the debug value's operands, which
triggers an assert if any of those operands are invalid. This patch
changes this check such that it only occurs if the SDDbgValue is valid;
if not, the check is irrelevant anyway, so can be safely ignored.
Differential Revision: https://reviews.llvm.org/D101540
This patch modifies updateDbgUsersToReg to properly handle
DBG_VALUE_LIST instructions, by replacing the hard-coded operand indices
(i.e. getOperand(0)) with the more general getDebugOperandsForReg(), and
updating the register for all matching operands.
Differential Revision: https://reviews.llvm.org/D101523
This change enables emitting CFI unwind information for debugging purpose
for targets with MCAsmInfo::ExceptionsType == ExceptionHandling::None.
Currently generating CFI unwind information is entangled with supporting
the exceptions, even when AsmPrinter explicitly recognizes that the unwind
tables are being generated as debug information.
In fact, the unwind information is not generated even if we specify
--force-dwarf-frame-section, unless exceptions are enabled. The LIT test
llvm/test/CodeGen/AMDGPU/debug_frame.ll demonstrates this behavior.
Enable this option for AMDGPU to prepare for future patches which add
complete CFI support.
Reviewed By: dblaikie, MaskRay
Differential Revision: https://reviews.llvm.org/D78778
Mips tests are using -march in RUN lines,
this will fail on AIX OS , when we get the mips-ibm-aix triple.
This is caused/exposed recently due to https://reviews.llvm.org/D101194 changed the default getMultiarchTriple in toolchain.
Update the tests to use -mtriple instead to avoid unintended failures.
Reviewed By: atanasyan
Differential Revision: https://reviews.llvm.org/D101863
Add tests which can catch the issue in 0ce723cb228bc1d1a0f5718f3862fb836145a333
(If any function needs CFISection::EH, the module should use CFISection::EH).
Reviewed By: echristo
Differential Revision: https://reviews.llvm.org/D101339
This patch fixes a crash in LiveDebugVariables for inputs where a
DBG_VALUE_LIST had 64 or more debug operands. This was triggering an
assert, which was added under the assumption that only bad CodeGen would
result in such a limit being hit, but relatively simple source files
that result in these incredibly long debug values have been found, so
this assert has been changed to a condition that drops the debug value
if it is not met.
Differential Revision: https://reviews.llvm.org/D101373
https://reviews.llvm.org/D99400 set clang DefaultDebuggerTuning for AIX
to dbx. However, we still need to update the target default so that llc
and other tools will get the same default debuggertuning, and avoid
passing extra options in LTO.
Reviewed By: #powerpc, shchenz, dblaikie
Differential Revision: https://reviews.llvm.org/D101197
Previous build failures were caused by an error in bitcode reading and
writing for DIArgList metadata, which has been fixed in e5d844b587.
There were also some unnecessary asserts that were being triggered on
certain builds, which have been removed.
This reverts commit dad5caa59e6b2bde8d6cf5b64a972c393c526c82.
This patch fixes an issue in which ConstantAsMetadata arguments to a
DIArglist, as well as the Constant values referenced by that metadata,
would not be always be emitted correctly into bitcode. This patch fixes
this issue firstly by searching for ConstantAsMetadata in DIArgLists
(previously we would only search for them when directly wrapped in
MetadataAsValue), and secondly by enumerating all of a DIArgList's
arguments directly prior to enumerating the DIArgList itself.
This patch also adds a number of asserts, and no longer treats the
arguments to a DIArgList as optional fields when reading/writing to
bitcode.
Differential Revision: https://reviews.llvm.org/D100572
This change adds debug information about whether PGO is being used or
not.
Microsoft performance tooling (e.g. xperf, WPA) uses this information to
show whether functions are optimized with PGO or not, as well as whether
PGO information is invalid.
This information is useful for validating whether training scenarios are
providing good coverage of real world scenarios, showing if profile data
is out of date, etc.
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D99994
Value::replaceUsesOutsideBlock doesn't replace debug uses which leads to an
unnecessary reduction in variable location coverage. Fix this, add a unittest for
it, and add a regression test demonstrating the change through instcombine's
replacedSelectWithOperand.
Reviewed By: djtodoro
Differential Revision: https://reviews.llvm.org/D99169
D73568 removed the lit feature object-emission, because it was introduced for a
target which did not support the integrated assembler, and that target no longer
required the feature. XCore still does not support the integrated assembler,
so a build with XCore as the default target fails tests requiring
object-emission. This issue was not publicly visible because there was not a
buildbot for XCore as the default target. We fixed the failures downstream. We
now have builder clang-xcore-ubuntu-20-x64 on the staging buildmaster, which
shows the failures. We would like to make upstream build green.
Omit DebugInfo/Generic on XCore to avoid annotating 70 separate files.
Differential Revision: https://reviews.llvm.org/D98508
Value::replaceUsesOutsideBlock doesn't replace debug uses which leads to an
unnecessary reduction in variable location coverage. Fix this, add a unittest for
it, and add a regression test demonstrating the change through instcombine's
replacedSelectWithOperand.
Reviewed By: djtodoro
Differential Revision: https://reviews.llvm.org/D99169
The causes of the previous build errors have been fixed in revisions
aa3e78a59fdf3b211be72f1b3221af831665e67d, and
140757bfaaa00110a92d2247a910c847e6e3bcc8
This reverts commit f40976bd01032f4905dde361e709166704581077.
Summary: Set the default DwarfInlinedStrings as inlined strings for DBX, due to DBX does not support .dwstr section for now.
Reviewed By: dblaikie
Differential Revision: https://reviews.llvm.org/D99933
Negative numbers are represented using DW_OP_consts along with signed representation
of the number as the argument.
Test case IR is generated using Fortran front-end.
Reviewed By: aprantl
Differential Revision: https://reviews.llvm.org/D99273
This is needed for Fortran assumed shape arrays whose dimensions are
defined as,
- 'count' is taken from array descriptor passed as parameter by
caller, access from descriptor is defined by type DIExpression.
- 'lowerBound' is defined by callee.
The current alternate way represents using upperBound in place of
count, where upperBound is calculated in callee in a temp variable
using lowerBound and count
Representation with count (DIExpression) is not only clearer as
compared to upperBound (DIVariable) but it has another advantage that
variable count is accessed by being parameter has better chance of
survival at higher optimization level than upperBound being local
variable.
Reviewed By: aprantl
Differential Revision: https://reviews.llvm.org/D99335
This commit adds debugging support for set types defined in languages
such as Pascal and Modula-2.
Patch by Peter McKinna!
Differential Revision: https://reviews.llvm.org/D76115
I think byval/sret and the others are close to being able to rip out
the code to support the missing type case. A lot of this code is
shared with inalloca, so catch this up to the others so that can
happen.
XCore default subtarget does not support 8-byte stack alignment. These failures
can be seen on builder clang-xcore-ubuntu-20-x64 on staging buildbot.
Differential Revision: https://reviews.llvm.org/D99092
Exclude AArch64 mapping symbols ($x and $d) for symtab symbolization as
it was done for ARM since D95916 tom bring bots back to green state.
This is implemented by setting SF_FormatSpecific such that
llvm-symbolizer will ignore them, and use this flag to re-implement
llvm-nm --special-syms option which make it work for both targets.
Differential Revision: https://reviews.llvm.org/D98803
On RISC-V, clang emits empty name symbols used for label differences. (In GCC the symbols are typically `.L0`)
After D95916, the empty name symbols can show up in llvm-symbolizer's symbolization output.
They have no names and thus not useful. Set `SF_FormatSpecific` so that llvm-symbolizer will ignore them.
`SF_FormatSpecific` is also used in LTO but that case should not matter.
Corresponding addr2line problem: https://sourceware.org/bugzilla/show_bug.cgi?id=27585
Reviewed By: luismarques
Differential Revision: https://reviews.llvm.org/D98669
Summary: This is a minor patch to add names for the debug line prologue, as a follow-up of D95998.
Reviewed By: dblaikie, ikudrin, shchenz
Differential Revision: https://reviews.llvm.org/D98383
