Skip to content

[OMPIRBuilder] Avoid invalid debug location. #151306

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 1 commit into from
Aug 11, 2025
Merged

[OMPIRBuilder] Avoid invalid debug location. #151306

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 15 additions & 3 deletions llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -92,6 +92,18 @@ static bool isConflictIP(IRBuilder<>::InsertPoint IP1,
return IP1.getBlock() == IP2.getBlock() && IP1.getPoint() == IP2.getPoint();
}

/// This is wrapper over IRBuilderBase::restoreIP that also restores the current
/// debug location to the last instruction in the specified basic block if the
/// insert point points to the end of the block.
static void restoreIPandDebugLoc(llvm::IRBuilderBase &Builder,
llvm::IRBuilderBase::InsertPoint IP) {
Builder.restoreIP(IP);
llvm::BasicBlock *BB = Builder.GetInsertBlock();
llvm::BasicBlock::iterator I = Builder.GetInsertPoint();
if (!BB->empty() && I == BB->end())
Builder.SetCurrentDebugLocation(BB->back().getStableDebugLoc());
}

static bool isValidWorkshareLoopScheduleType(OMPScheduleType SchedType) {
// Valid ordered/unordered and base algorithm combinations.
switch (SchedType & ~OMPScheduleType::MonotonicityMask) {
Expand Down Expand Up @@ -8586,7 +8598,7 @@ Error OpenMPIRBuilder::emitOffloadingArrays(
ArrayType *SizeArrayType = ArrayType::get(Int64Ty, Info.NumberOfPtrs);
Info.RTArgs.SizesArray = Builder.CreateAlloca(
SizeArrayType, /* ArraySize = */ nullptr, ".offload_sizes");
Builder.restoreIP(CodeGenIP);
restoreIPandDebugLoc(Builder, CodeGenIP);
} else {
auto *SizesArrayInit = ConstantArray::get(
ArrayType::get(Int64Ty, ConstSizes.size()), ConstSizes);
Expand All @@ -8605,7 +8617,7 @@ Error OpenMPIRBuilder::emitOffloadingArrays(
AllocaInst *Buffer = Builder.CreateAlloca(
SizeArrayType, /* ArraySize = */ nullptr, ".offload_sizes");
Buffer->setAlignment(OffloadSizeAlign);
Builder.restoreIP(CodeGenIP);
restoreIPandDebugLoc(Builder, CodeGenIP);
Builder.CreateMemCpy(
Buffer, M.getDataLayout().getPrefTypeAlign(Buffer->getType()),
SizesArrayGbl, OffloadSizeAlign,
Expand All @@ -8615,7 +8627,7 @@ Error OpenMPIRBuilder::emitOffloadingArrays(

Info.RTArgs.SizesArray = Buffer;
}
Builder.restoreIP(CodeGenIP);
restoreIPandDebugLoc(Builder, CodeGenIP);
}

// The map types are always constant so we don't need to generate code to
Expand Down
2 changes: 2 additions & 0 deletions mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4326,9 +4326,11 @@ createAlteredByCaptureMap(MapInfoData &mapData,

if (!isPtrTy) {
auto curInsert = builder.saveIP();
llvm::DebugLoc DbgLoc = builder.getCurrentDebugLocation();
builder.restoreIP(findAllocaInsertPoint(builder, moduleTranslation));
auto *memTempAlloc =
builder.CreateAlloca(builder.getPtrTy(), nullptr, ".casted");
builder.SetCurrentDebugLocation(DbgLoc);
builder.restoreIP(curInsert);

builder.CreateStore(newV, memTempAlloc);
Expand Down
45 changes: 45 additions & 0 deletions mlir/test/Target/LLVMIR/omptarget-debug-147063.mlir
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,45 @@
// RUN: mlir-translate -mlir-to-llvmir %s

module attributes {llvm.target_triple = "x86_64-unknown-linux-gnu", omp.is_gpu = false, omp.is_target_device = false, omp.target_triples = ["amdgcn-amd-amdhsa"]} {
omp.private {type = private} @_QFFfnEv_private_i32 : i32 loc(#loc1)
llvm.func internal @_QFPfn() {
%0 = llvm.mlir.constant(1 : i64) : i64 loc(#loc1)
%1 = llvm.alloca %0 x i32 {bindc_name = "v"} : (i64) -> !llvm.ptr loc(#loc1)
%2 = llvm.mlir.constant(1 : i32) : i32
omp.parallel private(@_QFFfnEv_private_i32 %1 -> %arg0 : !llvm.ptr) {
llvm.store %2, %arg0 : i32, !llvm.ptr loc(#loc2)
%4 = omp.map.info var_ptr(%arg0 : !llvm.ptr, i32) map_clauses(implicit, exit_release_or_enter_alloc) capture(ByCopy) -> !llvm.ptr {name = "v"} loc(#loc2)
omp.target map_entries(%4 -> %arg1 : !llvm.ptr) {
%5 = llvm.mlir.constant(1 : i32) : i32
%6 = llvm.load %arg1 : !llvm.ptr -> i32 loc(#loc3)
%7 = llvm.add %6, %5 : i32 loc(#loc3)
llvm.store %7, %arg1 : i32, !llvm.ptr loc(#loc3)
omp.terminator loc(#loc3)
} loc(#loc7)
omp.terminator
} loc(#loc4)
llvm.return
} loc(#loc6)
}

#di_file = #llvm.di_file<"target.f90" in "">
#di_null_type = #llvm.di_null_type
#di_compile_unit = #llvm.di_compile_unit<id = distinct[0]<>,
sourceLanguage = DW_LANG_Fortran95, file = #di_file, producer = "flang",
isOptimized = false, emissionKind = LineTablesOnly>
#di_subroutine_type = #llvm.di_subroutine_type<
callingConvention = DW_CC_program, types = #di_null_type>
#di_subprogram = #llvm.di_subprogram<id = distinct[1]<>,
compileUnit = #di_compile_unit, scope = #di_file, name = "main",
file = #di_file, subprogramFlags = "Definition|MainSubprogram",
type = #di_subroutine_type>
#di_subprogram1 = #llvm.di_subprogram<compileUnit = #di_compile_unit,
name = "target", file = #di_file, subprogramFlags = "Definition",
type = #di_subroutine_type>

#loc1 = loc("test.f90":7:15)
#loc2 = loc("test.f90":1:7)
#loc3 = loc("test.f90":3:7)
#loc4 = loc("test.f90":16:7)
#loc6 = loc(fused<#di_subprogram>[#loc1])
#loc7 = loc(fused<#di_subprogram1>[#loc3])