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Without this patch, in `getAssignmentInfo` the result of `getTypeSizeInBits` is
cast to `uint64_t`, which a) is an operation that will eventually be
unsupported by the API according to the comments, and b) causes an assertion
failure if the type is a scalable vector. Don't cast the `TypeSize` to
`uint64_t` and check `isScalable` before getting the fixed size.
This can result in incorrect variable locations, see llvm.org/PR62346 (but is
better than crashing).
Reviewed By: paulwalker-arm
Differential Revision: https://reviews.llvm.org/D149137
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The out-param vector from findDbgValues and findDbgUsers should not include
duplicates, which is possible if the debug intrinsic uses the value multiple
times. This filter is already in place for multiple uses in a `DIArgLists`;
extend it to cover dbg.assigns too because a Value may be used in both the
address and value components.
Additionally, refactor the duplicated functionality between findDbgValues and
FindDbgUsers into a new function findDbgIntrinsics.
Reviewed By: jmorse, StephenTozer
Differential Revision: https://reviews.llvm.org/D148788
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Buildbot: https://buildkite.com/llvm-project/upstream-bazel/builds/
59967#01879985-8d44-4041-9cd0-a1e41371208e
See https://reviews.llvm.org/D148536
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This reverts commit 6db6ab4815a44bfcaabfcdd84a0ff458394f6f52 which reverts
D148536.
Build issues addressed in D148698.
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This reverts commit fca3e8e024f0015604d21e6f76f3e199345679c5.
Buildbot: https://lab.llvm.org/buildbot/#/builders/121/builds/29766
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`shortenAssignment` inserts dbg.assigns with fragments describing the dead part
of a shortened store after each dbg.assign linked to the store.
Without this patch it doesn't take into account that the dead part of a
shortened store may be outside the bounds of a variable of a linked
dbg.assign. It also doesn't correctly account for a non-zero offset in the
address modifying `DIExpression` of the dbg.assign (which is possible for
fragments now even though whole variables currently cannot have a non-zero
offset in their alloca).
Fix this by moving the dead slice into variable-space and performing an
intersect of that adjusted slice with the existing fragment.
This fixes a verifier error reported when building fuchsia with assignment
tracking enabled:
https://ci.chromium.org/ui/p/fuchsia/builders/ci/
clang_toolchain.ci.core.x64-release/b8784000953022145169/overview
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D148536
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Debug intrinsics sometimes end up with empty metadata location operands. The
debug intrinsic interfaces return nullptr when retrieving location operand in
this case.
Skip empty-metadata dbg.declares to avoid dereferencing the nullptr. This
doesn't affect the final debug info in any way.
Reviewed By: jryans
Differential Revision: https://reviews.llvm.org/D148204
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VLA backed variables currently trip an assertion in SROA with D146987 (enabling
assignment tracking). Disable assignment tracking for VLA variables until that
can be investigated.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D148140
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The assertion exists to ensure all variables passed into `trackAssignments` end
up with dbg.assigns associated with their backing allocas. The assertion
compared the passed-in and tracked variables using `DebugVariable`, which
includes the fragment as part of the variable identity.
It is possible for the backing alloca to be smaller than a variable (see test
case). In this case the input variable `(Var X, no fragment, no InlinedAt)`
isn't equal to the dbg.assign variable `(Var X, some fragment, no
InlinedAt)`. To cover this case the assertion now ignores fragments through the
use of `DebugVariableAggregate`.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D148100
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In D147777 emitDbgAssign was fixed to discard assignments which touched any
bits outside the bounds of a variable. This patch changes emitDbgAssign to
discard assignments which touch bits only outside the variable bounds, and
creates a truncated fragment expression for stores partially overlapping the
variable. This is necessary because the alloca is interpreted as a store (of
undef), meaning without this patch emitDbgAssign would discard the inital
dbg.assign for a variable that is smaller than the alloca.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D148018
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than the alloca
Prior to this patch the trackAssignments function would attribute all stores to
an alloca to all variables linked to the alloca. This is wrong in the case
where the alloca contains variables which are smaller than the alloca, and
caused erroneous fragment information to be generated.
Now stores outside the variable bounds are discarded, and we check whether a
fragment is needed based on whether the store covers the entire variable as
opposed to whether it covers the entire alloca (except for variables of unknown
size).
Note that trackAssignments doesn't yet understand whole variables sitting at
anything other than offset 0 in an alloca - those variables are still tracked
using dbg.declares.
Fixes https://lab.llvm.org/buildbot/#/builders/70/builds/36007
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D147777
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Assignment tracking doesn't add value when optimisations are disabled - don't
apply it to functions marked optnone.
Reviewed By: jryans
Differential Revision: https://reviews.llvm.org/D147129
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Part of `dbg.addr` removal
Discussed in https://discourse.llvm.org/t/what-is-the-status-of-dbg-addr/62898
Differential Revision: https://reviews.llvm.org/D144801
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The module flag "debug-info-assignment-tracking" is set by the
declare-to-assign pass to indicate that assignment tracking is enabled. This
patch changes declare-to-assign to only set the flag if it makes a
modification. This lets the compiler avoid doing extra work for no benefit,
such as is currently the case if assignment tracking is requested for a build
with line tables only (-gmlt) or a build without debug info.
Reviewed By: scott.linder
Differential Revision: https://reviews.llvm.org/D144481
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This patch adds several missing NamedMDList modifier functions, like
removeNamedMDNode(), eraseNamedMDNode() and insertNamedMDNode().
There is no longer need to access the list directly so it also makes
getNamedMDList() private.
Differential Revision: https://reviews.llvm.org/D143969
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Differential Revision: https://reviews.llvm.org/D138415
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The stripDebugLocFromLoopID() may mistakenly remove useful metadata nodes
when they are operands of a child node, which also has DILocation operands.
It can be reproduced by the output of clang for code similar to the following:
for(int i = 0; i < n; i++)
x[i] = 10;
-strip-debug removes the child node of llvm.loop.vectorize.followup_all,
which contains llvm.loop.isvectorized and llvm.loop.unroll.count.
This patch fixes by checking all children nodes and only remove a metadata
node if all its children are DILocation.
Differential Revision: https://reviews.llvm.org/D141909
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Remove LLVM flag -experimental-assignment-tracking. Assignment tracking is
still enabled from Clang with the command line -Xclang
-fexperimental-assignment-tracking which tells Clang to ask LLVM to run the
pass declare-to-assign. That pass converts conventional debug intrinsics to
assignment tracking metadata. With this patch it now also sets a module flag
debug-info-assignment-tracking with the value `i1 true` (using the flag conflict
rule `Max` since enabling assignment tracking on IR that contains only
conventional debug intrinsics should cause no issues).
Update the docs and tests too.
Reviewed By: CarlosAlbertoEnciso
Differential Revision: https://reviews.llvm.org/D142027
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value() has undesired exception checking semantics and calls
__throw_bad_optional_access in libc++. Moreover, the API is unavailable without
_LIBCPP_NO_EXCEPTIONS on older Mach-O platforms (see
_LIBCPP_AVAILABILITY_BAD_OPTIONAL_ACCESS).
This commit fixes LLVMAnalysis and its dependencies.
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This is part of an effort to migrate from llvm::Optional to
std::optional:
https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
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This patch mechanically replaces None with std::nullopt where the
compiler would warn if None were deprecated. The intent is to reduce
the amount of manual work required in migrating from Optional to
std::optional.
This is part of an effort to migrate from llvm::Optional to
std::optional:
https://discourse.llvm.org/t/deprecating-llvm-optional-x-hasvalue-getvalue-getvalueor/63716
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Add method:
Instruction::mergeDIAssignID(
ArrayRef<const Instruction* > SourceInstructions)
which merges the DIAssignID metadata attachments on `SourceInstructions` and
`this` and replaces uses of the original IDs with the new shared one.
This is used when stores are merged, for example sinking stores out of a
if-diamond CFG or vectorizing contiguous stores.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D133291
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Add trackAssignments which adds assignment tracking metadata to a function for
a specified set of variables. The intended callers are the inliner and the
front end - those calls will be added in separate patches.
I've added a pass called declare-to-assign (AssignmentTrackingPass) that
converts dbg.declare intrinsics to dbg.assigns using trackAssignments so that
the function can be easily tested (see
llvm/test/DebugInfo/Generic/track-assignments.ll). The pass could also be used
by front ends to easily test out enabling assignment tracking.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132225
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Reverted in b22d80dc6a6af6328d68f7b944627f9278ff6ffb.
Move getDebugValueLoc so that it can be accessed from DebugInfo.h for the
Assignment Tracking patch stack and remove redundant parameter Src.
Reviewed By: jryans
Differential Revision: https://reviews.llvm.org/D132357
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reference
Previously reverted in 41f5a0004e442ae71c8e754fdadb4bd1e172fb2d. Fold in
D133576 previously reverted in d29d5ffb6332569e85d5eda5130603bbd8664635.
---
The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Overview
It's possible to find intrinsics linked to an instruction by looking at the
MetadataAsValue uses of the attached DIAssignID. That covers instruction ->
intrinsic(s) lookup. Add a global DIAssignID -> instruction(s) map which gives
us the ability to perform intrinsic -> instruction(s) lookup. Add plumbing to
keep the map up to date through optimisations and add utility functions
including two that perform those lookups. Finally, add a unittest.
Details
In llvm/lib/IR/LLVMContextImpl.h add AssignmentIDToInstrs which maps DIAssignID
* attachments to Instruction *s. Because the DIAssignID * is the key we can't
use a TrackingMDNodeRef for it, and therefore cannot easily update the mapping
when a temporary DIAssignID is replaced.
Temporary DIAssignID's are only used in IR parsing to deal with metadata
forward references. Update llvm/lib/AsmParser/LLParser.cpp to avoid using
temporary DIAssignID's for attachments.
In llvm/lib/IR/Metadata.cpp add Instruction::updateDIAssignIDMapping which is
called to remove or add an entry (or both) to AssignmentIDToInstrs. Call this
from Instruction::setMetadata and add a call to setMetadata in Intruction's
dtor that explicitly unsets the DIAssignID so that the mappging gets updated.
In llvm/lib/IR/DebugInfo.cpp and DebugInfo.h add utility functions:
getAssignmentInsts(const DbgAssignIntrinsic *DAI)
getAssignmentMarkers(const Instruction *Inst)
RAUW(DIAssignID *Old, DIAssignID *New)
deleteAll(Function *F)
deleteAssignmentMarkers(const Instruction *Inst)
These core utils are tested in llvm/unittests/IR/DebugInfoTest.cpp.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132224
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This reverts commit 80378a4ca725eeeae940b99220b3913f7b73c895.
I am reverting this patch because I need to revert 171f7024cc82e8702abebdedb699d37b50574be7 and without reverting this patch, reverting 171f7024cc82e8702abebdedb699d37b50574be7 causes conflicts.
Patch 171f7024cc82e8702abebdedb699d37b50574be7 introduced a cyclic dependancy in the module build.
https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/48197/consoleFull#-69937453049ba4694-19c4-4d7e-bec5-911270d8a58c
In file included from <module-includes>:1:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/Argument.h:18:10: fatal error: cyclic dependency in module 'LLVM_IR': LLVM_IR -> LLVM_intrinsic_gen -> LLVM_IR
^
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
While building module 'LLVM_IR' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:
In file included from <module-includes>:12:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/DebugInfo.h:24:10: fatal error: could not build module 'LLVM_intrinsic_gen'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
In file included from <module-includes>:15:
In file included from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCContext.h:23:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:10: fatal error: could not build module 'LLVM_IR'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:10: fatal error: could not build module 'LLVM_MC'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
4 errors generated.
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reference"
This reverts commit 171f7024cc82e8702abebdedb699d37b50574be7.
Reverting this patch because it causes a cyclic dependency in the module build
https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/48197/consoleFull#-69937453049ba4694-19c4-4d7e-bec5-911270d8a58c
In file included from <module-includes>:1:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/Argument.h:18:10: fatal error: cyclic dependency in module 'LLVM_IR': LLVM_IR -> LLVM_intrinsic_gen -> LLVM_IR
^
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
While building module 'LLVM_IR' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:
In file included from <module-includes>:12:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/DebugInfo.h:24:10: fatal error: could not build module 'LLVM_intrinsic_gen'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
In file included from <module-includes>:15:
In file included from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCContext.h:23:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:10: fatal error: could not build module 'LLVM_IR'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:10: fatal error: could not build module 'LLVM_MC'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
4 errors generated.
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This reverts commit 4c44fa1c3829c2d0c6ce10b576dafbc2e0631d47.
This patch has to be reverted because I need to revert 171f7024cc82e8702abebdedb699d37b50574be7 and without reverting this patch, reverting 171f7024cc82e8702abebdedb699d37b50574be7 causes conflicts.
Patch 171f7024cc82e8702abebdedb699d37b50574be7 introduced a cyclic dependency in the module build.
https://green.lab.llvm.org/green/view/LLDB/job/lldb-cmake/48197/consoleFull#-69937453049ba4694-19c4-4d7e-bec5-911270d8a58c
In file included from <module-includes>:1:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/Argument.h:18:10: fatal error: cyclic dependency in module 'LLVM_IR': LLVM_IR -> LLVM_intrinsic_gen -> LLVM_IR
^
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
While building module 'LLVM_IR' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:
In file included from <module-includes>:12:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/IR/DebugInfo.h:24:10: fatal error: could not build module 'LLVM_intrinsic_gen'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
While building module 'LLVM_MC' imported from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:
In file included from <module-includes>:15:
In file included from /Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCContext.h:23:
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/include/llvm/MC/MCPseudoProbe.h:57:10: fatal error: could not build module 'LLVM_IR'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/Users/buildslave/jenkins/workspace/lldb-cmake/llvm-project/llvm/lib/MC/MCAsmInfoCOFF.cpp:14:10: fatal error: could not build module 'LLVM_MC'
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
4 errors generated.
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Move getDebugValueLoc so that it can be accessed from DebugInfo.h for the
Assignment Tracking patch stack and remove redundant parameter Src.
Reviewed By: jryans
Differential Revision: https://reviews.llvm.org/D132357
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deleteAssignmentMarkers(const Instruction *Inst) does exactly as you'd expect -
it deletes any dbg.assign intrinsics linked to Inst.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D133576
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Overview
It's possible to find intrinsics linked to an instruction by looking at the
MetadataAsValue uses of the attached DIAssignID. That covers instruction ->
intrinsic(s) lookup. Add a global DIAssignID -> instruction(s) map which gives
us the ability to perform intrinsic -> instruction(s) lookup. Add plumbing to
keep the map up to date through optimisations and add utility functions
including two that perform those lookups. Finally, add a unittest.
Details
In llvm/lib/IR/LLVMContextImpl.h add AssignmentIDToInstrs which maps DIAssignID
* attachments to Instruction *s. Because the DIAssignID * is the key we can't
use a TrackingMDNodeRef for it, and therefore cannot easily update the mapping
when a temporary DIAssignID is replaced.
Temporary DIAssignID's are only used in IR parsing to deal with metadata
forward references. Update llvm/lib/AsmParser/LLParser.cpp to avoid using
temporary DIAssignID's for attachments.
In llvm/lib/IR/Metadata.cpp add Instruction::updateDIAssignIDMapping which is
called to remove or add an entry (or both) to AssignmentIDToInstrs. Call this
from Instruction::setMetadata and add a call to setMetadata in Intruction's
dtor that explicitly unsets the DIAssignID so that the mappging gets updated.
In llvm/lib/IR/DebugInfo.cpp and DebugInfo.h add utility functions:
getAssignmentInsts(const DbgAssignIntrinsic *DAI)
getAssignmentMarkers(const Instruction *Inst)
RAUW(DIAssignID *Old, DIAssignID *New)
deleteAll(Function *F)
These core utils are tested in llvm/unittests/IR/DebugInfoTest.cpp.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132224
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Add the DIAssignID metadata attachment boilerplate. Includes a textual-bitcode
roundtrip test and tests that the verifier and parser catch badly formed IR.
This piece of metadata links together stores (used as an attachment) and the
yet-to-be-added llvm.dbg.assign debug intrinsic (used as an operand).
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132222
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This reverts commit c285df77e9b78f971f9cd9d025248c20b030cc2a.
A sanitizer bot found an issue:
https://lab.llvm.org/buildbot/#/builders/5/builds/28809/steps/13/logs/stdio
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Add the DIAssignID metadata attachment boilerplate. Includes a textual-bitcode
roundtrip test and tests that the verifier and parser catch badly formed IR.
This piece of metadata links together stores (used as an attachment) and the
yet-to-be-added llvm.dbg.assign debug intrinsic (used as an operand).
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132222
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The Assignment Tracking debug-info feature is outlined in this RFC:
https://discourse.llvm.org/t/
rfc-assignment-tracking-a-better-way-of-specifying-variable-locations-in-ir
Enable in clang: -Xclang -fexperimental-assignment-tracking
Enable in llvm tools: -experimental-assignment-tracking
When assignment tracking is enabled in clang it will pass on the flag to enable
the feature in lllvm. It's undefined behaviour to read IR that contains
assignment tracking metadata without specifying the feature flags.
Tests will come with later patches that add assignment tracking features.
Reviewed By: jmorse
Differential Revision: https://reviews.llvm.org/D132221
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Some places were using unwrap<T>(x) = cast<T>(unwrap(x)), even though
the unwrapped value already had type T. Removing the template argument
makes it clear that no cast is intended.
Other places were using cast<T>(unwrap(x)), we replace that with the
shorthand unwrap<T>(x) for consistency.
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The DebugLoc is conserved when hoisting function calls, to ensure the
DIScope is preserved if inlining occurs.
This commit drops the DebugLoc in the case the call is an intrinsic
call that won't be lowered into a function call.
Differential Revision: https://reviews.llvm.org/D134429
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This partially reverts commit
f5a68feab30a529280c2912dc464e3a81e276f9a.
Fixes https://github.com/llvm/llvm-project/issues/57557
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Based on the output of include-what-you-use.
This is a big chunk of changes. It is very likely to break downstream code
unless they took a lot of care in avoiding hidden ehader dependencies, something
the LLVM codebase doesn't do that well :-/
I've tried to summarize the biggest change below:
- llvm/include/llvm-c/Core.h: no longer includes llvm-c/ErrorHandling.h
- llvm/IR/DIBuilder.h no longer includes llvm/IR/DebugInfo.h
- llvm/IR/IRBuilder.h no longer includes llvm/IR/IntrinsicInst.h
- llvm/IR/LLVMRemarkStreamer.h no longer includes llvm/Support/ToolOutputFile.h
- llvm/IR/LegacyPassManager.h no longer include llvm/Pass.h
- llvm/IR/Type.h no longer includes llvm/ADT/SmallPtrSet.h
- llvm/IR/PassManager.h no longer includes llvm/Pass.h nor llvm/Support/Debug.h
And the usual count of preprocessed lines:
$ clang++ -E -Iinclude -I../llvm/include ../llvm/lib/IR/*.cpp -std=c++14 -fno-rtti -fno-exceptions | wc -l
before: 6400831
after: 6189948
200k lines less to process is no that bad ;-)
Discourse thread on the topic: https://llvm.discourse.group/t/include-what-you-use-include-cleanup
Differential Revision: https://reviews.llvm.org/D118652
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Fix a TODO. Remove the callers of this signed version and delete.
Reviewed By: CodaFi
Differential Revision: https://reviews.llvm.org/D116014
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The LLVM C API function is called `LLVMDIBuilderFinalizeSubprogram()`.
Reviewed By: CodaFi
Differential Revision: https://reviews.llvm.org/D104794
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