[flang] [llvm] [mlir] [llvm][mlir][OMPIRBuilder] Translate omp.single's copyprivate (PR #80488)
Leandro Lupori via llvm-commits
llvm-commits at lists.llvm.org
Thu Feb 22 12:45:49 PST 2024
https://github.com/luporl updated https://github.com/llvm/llvm-project/pull/80488
>From 75fde1a3fdbb1a61b37da3f63c1b593c42c8c76e Mon Sep 17 00:00:00 2001
From: Leandro Lupori <leandro.lupori at linaro.org>
Date: Fri, 2 Feb 2024 17:16:34 -0300
Subject: [PATCH 1/3] [llvm][mlir][OMPIRBuilder] Translate omp.single's
copyprivate
Use the new copyprivate list from omp.single to emit calls to
__kmpc_copyprivate, during the creation of the single operation
in OMPIRBuilder.
This is patch 4 of 4, to add support for COPYPRIVATE in Flang.
Original PR: https://github.com/llvm/llvm-project/pull/73128
---
.../llvm/Frontend/OpenMP/OMPIRBuilder.h | 6 +-
llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp | 23 +++-
.../Frontend/OpenMPIRBuilderTest.cpp | 111 ++++++++++++++++++
.../OpenMP/OpenMPToLLVMIRTranslation.cpp | 20 +++-
mlir/test/Target/LLVMIR/openmp-llvm.mlir | 32 +++++
5 files changed, 187 insertions(+), 5 deletions(-)
diff --git a/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h b/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
index 4cca4f4d6bc1ca..c5af7ec3f62370 100644
--- a/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
+++ b/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
@@ -1830,12 +1830,16 @@ class OpenMPIRBuilder {
/// \param FiniCB Callback to finalize variable copies.
/// \param IsNowait If false, a barrier is emitted.
/// \param DidIt Local variable used as a flag to indicate 'single' thread
+ /// \param CPVars copyprivate variables.
+ /// \param CPFuncs copy functions to use for each copyprivate variable.
///
/// \returns The insertion position *after* the single call.
InsertPointTy createSingle(const LocationDescription &Loc,
BodyGenCallbackTy BodyGenCB,
FinalizeCallbackTy FiniCB, bool IsNowait,
- llvm::Value *DidIt);
+ llvm::Value *DidIt,
+ ArrayRef<llvm::Value *> CPVars = {},
+ ArrayRef<llvm::Function *> CPFuncs = {});
/// Generator for '#omp master'
///
diff --git a/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp b/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
index 2e96772772e6e3..00d260ee3b5915 100644
--- a/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
+++ b/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
@@ -4002,7 +4002,8 @@ OpenMPIRBuilder::createCopyPrivate(const LocationDescription &Loc,
OpenMPIRBuilder::InsertPointTy OpenMPIRBuilder::createSingle(
const LocationDescription &Loc, BodyGenCallbackTy BodyGenCB,
- FinalizeCallbackTy FiniCB, bool IsNowait, llvm::Value *DidIt) {
+ FinalizeCallbackTy FiniCB, bool IsNowait, llvm::Value *DidIt,
+ ArrayRef<llvm::Value *> CPVars, ArrayRef<llvm::Function *> CPFuncs) {
if (!updateToLocation(Loc))
return Loc.IP;
@@ -4025,17 +4026,33 @@ OpenMPIRBuilder::InsertPointTy OpenMPIRBuilder::createSingle(
Function *ExitRTLFn = getOrCreateRuntimeFunctionPtr(OMPRTL___kmpc_end_single);
Instruction *ExitCall = Builder.CreateCall(ExitRTLFn, Args);
+ auto FiniCBWrapper = [&](InsertPointTy IP) {
+ FiniCB(IP);
+
+ if (DidIt)
+ Builder.CreateStore(Builder.getInt32(1), DidIt);
+ };
+
// generates the following:
// if (__kmpc_single()) {
// .... single region ...
// __kmpc_end_single
// }
+ // __kmpc_copyprivate
// __kmpc_barrier
- EmitOMPInlinedRegion(OMPD, EntryCall, ExitCall, BodyGenCB, FiniCB,
+ EmitOMPInlinedRegion(OMPD, EntryCall, ExitCall, BodyGenCB, FiniCBWrapper,
/*Conditional*/ true,
/*hasFinalize*/ true);
- if (!IsNowait)
+
+ if (DidIt) {
+ for (size_t I = 0, E = CPVars.size(); I < E; ++I)
+ // NOTE BufSize is currently unused, so just pass 0.
+ createCopyPrivate(LocationDescription(Builder.saveIP(), Loc.DL),
+ /*BufSize=*/ConstantInt::get(Int64, 0), CPVars[I],
+ CPFuncs[I], DidIt);
+ // NOTE __kmpc_copyprivate already inserts a barrier
+ } else if (!IsNowait)
createBarrier(LocationDescription(Builder.saveIP(), Loc.DL),
omp::Directive::OMPD_unknown, /* ForceSimpleCall */ false,
/* CheckCancelFlag */ false);
diff --git a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
index 7b54ae675f0c16..58a9c4ffd63cdb 100644
--- a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
+++ b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
@@ -3464,6 +3464,117 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveNowait) {
EXPECT_EQ(ExitBarrier, nullptr);
}
+TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
+ using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
+ OpenMPIRBuilder OMPBuilder(*M);
+ OMPBuilder.initialize();
+ F->setName("func");
+ IRBuilder<> Builder(BB);
+
+ OpenMPIRBuilder::LocationDescription Loc({Builder.saveIP(), DL});
+
+ AllocaInst *PrivAI = nullptr;
+
+ BasicBlock *EntryBB = nullptr;
+ BasicBlock *ThenBB = nullptr;
+
+ Value *CPVar = Builder.CreateAlloca(F->arg_begin()->getType());
+ Builder.CreateStore(F->arg_begin(), CPVar);
+
+ FunctionType *CopyFuncTy = FunctionType::get(
+ Builder.getVoidTy(), {Builder.getPtrTy(), Builder.getPtrTy()}, false);
+ Function *CopyFunc =
+ Function::Create(CopyFuncTy, Function::PrivateLinkage, "copy_var", *M);
+
+ Value *DidIt = Builder.CreateAlloca(Type::getInt32Ty(Builder.getContext()));
+
+ auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
+ if (AllocaIP.isSet())
+ Builder.restoreIP(AllocaIP);
+ else
+ Builder.SetInsertPoint(&*(F->getEntryBlock().getFirstInsertionPt()));
+ PrivAI = Builder.CreateAlloca(F->arg_begin()->getType());
+ Builder.CreateStore(F->arg_begin(), PrivAI);
+
+ llvm::BasicBlock *CodeGenIPBB = CodeGenIP.getBlock();
+ llvm::Instruction *CodeGenIPInst = &*CodeGenIP.getPoint();
+ EXPECT_EQ(CodeGenIPBB->getTerminator(), CodeGenIPInst);
+
+ Builder.restoreIP(CodeGenIP);
+
+ // collect some info for checks later
+ ThenBB = Builder.GetInsertBlock();
+ EntryBB = ThenBB->getUniquePredecessor();
+
+ // simple instructions for body
+ Value *PrivLoad =
+ Builder.CreateLoad(PrivAI->getAllocatedType(), PrivAI, "local.use");
+ Builder.CreateICmpNE(F->arg_begin(), PrivLoad);
+ };
+
+ auto FiniCB = [&](InsertPointTy IP) {
+ BasicBlock *IPBB = IP.getBlock();
+ EXPECT_NE(IPBB->end(), IP.getPoint());
+ };
+
+ Builder.restoreIP(OMPBuilder.createSingle(Builder, BodyGenCB, FiniCB,
+ /*IsNowait*/ false, DidIt, {CPVar},
+ {CopyFunc}));
+ Value *EntryBBTI = EntryBB->getTerminator();
+ EXPECT_NE(EntryBBTI, nullptr);
+ EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
+ BranchInst *EntryBr = cast<BranchInst>(EntryBB->getTerminator());
+ EXPECT_TRUE(EntryBr->isConditional());
+ EXPECT_EQ(EntryBr->getSuccessor(0), ThenBB);
+ BasicBlock *ExitBB = ThenBB->getUniqueSuccessor();
+ EXPECT_EQ(EntryBr->getSuccessor(1), ExitBB);
+
+ CmpInst *CondInst = cast<CmpInst>(EntryBr->getCondition());
+ EXPECT_TRUE(isa<CallInst>(CondInst->getOperand(0)));
+
+ CallInst *SingleEntryCI = cast<CallInst>(CondInst->getOperand(0));
+ EXPECT_EQ(SingleEntryCI->arg_size(), 2U);
+ EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
+ EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
+
+ CallInst *SingleEndCI = nullptr;
+ for (auto &FI : *ThenBB) {
+ Instruction *Cur = &FI;
+ if (isa<CallInst>(Cur)) {
+ SingleEndCI = cast<CallInst>(Cur);
+ if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
+ break;
+ SingleEndCI = nullptr;
+ }
+ }
+ EXPECT_NE(SingleEndCI, nullptr);
+ EXPECT_EQ(SingleEndCI->arg_size(), 2U);
+ EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
+ EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
+
+ CallInst *CopyPrivateCI = nullptr;
+ bool FoundBarrier = false;
+ for (auto &FI : *ExitBB) {
+ Instruction *Cur = &FI;
+ if (auto *CI = dyn_cast<CallInst>(Cur)) {
+ if (CI->getCalledFunction()->getName() == "__kmpc_barrier")
+ FoundBarrier = true;
+ else if (CI->getCalledFunction()->getName() == "__kmpc_copyprivate")
+ CopyPrivateCI = CI;
+ }
+ }
+ EXPECT_FALSE(FoundBarrier);
+ EXPECT_NE(CopyPrivateCI, nullptr);
+ EXPECT_EQ(CopyPrivateCI->arg_size(), 6U);
+ EXPECT_TRUE(isa<AllocaInst>(CopyPrivateCI->getArgOperand(3)));
+ EXPECT_EQ(CopyPrivateCI->getArgOperand(3), CPVar);
+ EXPECT_TRUE(isa<Function>(CopyPrivateCI->getArgOperand(4)));
+ EXPECT_EQ(CopyPrivateCI->getArgOperand(4), CopyFunc);
+ EXPECT_TRUE(isa<LoadInst>(CopyPrivateCI->getArgOperand(5)));
+ LoadInst *DidItLI = cast<LoadInst>(CopyPrivateCI->getArgOperand(5));
+ EXPECT_EQ(DidItLI->getOperand(0), DidIt);
+}
+
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadFlt) {
OpenMPIRBuilder OMPBuilder(*M);
OMPBuilder.initialize();
diff --git a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
index 6e53d801a0d2f0..fe873dc6135ad4 100644
--- a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
@@ -656,8 +656,26 @@ convertOmpSingle(omp::SingleOp &singleOp, llvm::IRBuilderBase &builder,
moduleTranslation, bodyGenStatus);
};
auto finiCB = [&](InsertPointTy codeGenIP) {};
+
+ // Handle copyprivate
+ Operation::operand_range cpVars = singleOp.getCopyprivateVars();
+ std::optional<ArrayAttr> cpFuncs = singleOp.getCopyprivateFuncs();
+ llvm::SmallVector<llvm::Value *> llvmCPVars;
+ llvm::SmallVector<llvm::Function *> llvmCPFuncs;
+ for (size_t i = 0, e = cpVars.size(); i < e; ++i) {
+ llvmCPVars.push_back(moduleTranslation.lookupValue(cpVars[i]));
+ auto llvmFuncOp = SymbolTable::lookupNearestSymbolFrom<LLVM::LLVMFuncOp>(
+ singleOp, cast<SymbolRefAttr>((*cpFuncs)[i]));
+ llvmCPFuncs.push_back(
+ moduleTranslation.lookupFunction(llvmFuncOp.getName()));
+ }
+ llvm::Value *didIt = nullptr;
+ if (!llvmCPVars.empty())
+ didIt = builder.CreateAlloca(llvm::Type::getInt32Ty(builder.getContext()));
+
builder.restoreIP(moduleTranslation.getOpenMPBuilder()->createSingle(
- ompLoc, bodyCB, finiCB, singleOp.getNowait(), /*DidIt=*/nullptr));
+ ompLoc, bodyCB, finiCB, singleOp.getNowait(), didIt, llvmCPVars,
+ llvmCPFuncs));
return bodyGenStatus;
}
diff --git a/mlir/test/Target/LLVMIR/openmp-llvm.mlir b/mlir/test/Target/LLVMIR/openmp-llvm.mlir
index 39a1e036e85c02..1626c316af1d6e 100644
--- a/mlir/test/Target/LLVMIR/openmp-llvm.mlir
+++ b/mlir/test/Target/LLVMIR/openmp-llvm.mlir
@@ -2186,6 +2186,38 @@ llvm.func @single_nowait(%x: i32, %y: i32, %zaddr: !llvm.ptr) {
// -----
+llvm.func @copy_i32(!llvm.ptr, !llvm.ptr)
+llvm.func @copy_f32(!llvm.ptr, !llvm.ptr)
+
+// CHECK-LABEL: @single_copyprivate
+// CHECK-SAME: (ptr %[[ip:.*]], ptr %[[fp:.*]])
+llvm.func @single_copyprivate(%ip: !llvm.ptr, %fp: !llvm.ptr) {
+ // CHECK: call i32 @__kmpc_single
+ omp.single copyprivate(%ip -> @copy_i32 : !llvm.ptr, %fp -> @copy_f32 : !llvm.ptr) {
+ // CHECK: %[[i:.*]] = load i32, ptr %[[ip]]
+ %i = llvm.load %ip : !llvm.ptr -> i32
+ // CHECK: %[[i2:.*]] = add i32 %[[i]], %[[i]]
+ %i2 = llvm.add %i, %i : i32
+ // CHECK: store i32 %[[i2]], ptr %[[ip]]
+ llvm.store %i2, %ip : i32, !llvm.ptr
+ // CHECK: %[[f:.*]] = load float, ptr %[[fp]]
+ %f = llvm.load %fp : !llvm.ptr -> f32
+ // CHECK: %[[f2:.*]] = fadd float %[[f]], %[[f]]
+ %f2 = llvm.fadd %f, %f : f32
+ // CHECK: store float %[[f2]], ptr %[[fp]]
+ llvm.store %f2, %fp : f32, !llvm.ptr
+ // CHECK: call void @__kmpc_end_single
+ // CHECK: call void @__kmpc_copyprivate({{.*}}, ptr %[[ip]], ptr @copy_i32, {{.*}})
+ // CHECK: call void @__kmpc_copyprivate({{.*}}, ptr %[[fp]], ptr @copy_f32, {{.*}})
+ // CHECK-NOT: call void @__kmpc_barrier
+ omp.terminator
+ }
+ // CHECK: ret void
+ llvm.return
+}
+
+// -----
+
// CHECK: @_QFsubEx = internal global i32 undef
// CHECK: @_QFsubEx.cache = common global ptr null
>From ad9b4eb77b9d4f92ec44553fa6bd3fa361d29ce1 Mon Sep 17 00:00:00 2001
From: Leandro Lupori <leandro.lupori at linaro.org>
Date: Thu, 22 Feb 2024 19:23:20 +0000
Subject: [PATCH 2/3] Address review's comments
---
.../llvm/Frontend/OpenMP/OMPIRBuilder.h | 2 -
llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp | 10 +-
.../Frontend/OpenMPIRBuilderTest.cpp | 96 +++++++++++++------
.../OpenMP/OpenMPToLLVMIRTranslation.cpp | 6 +-
4 files changed, 72 insertions(+), 42 deletions(-)
diff --git a/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h b/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
index c5af7ec3f62370..37638684d7eebe 100644
--- a/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
+++ b/llvm/include/llvm/Frontend/OpenMP/OMPIRBuilder.h
@@ -1829,7 +1829,6 @@ class OpenMPIRBuilder {
/// \param BodyGenCB Callback that will generate the region code.
/// \param FiniCB Callback to finalize variable copies.
/// \param IsNowait If false, a barrier is emitted.
- /// \param DidIt Local variable used as a flag to indicate 'single' thread
/// \param CPVars copyprivate variables.
/// \param CPFuncs copy functions to use for each copyprivate variable.
///
@@ -1837,7 +1836,6 @@ class OpenMPIRBuilder {
InsertPointTy createSingle(const LocationDescription &Loc,
BodyGenCallbackTy BodyGenCB,
FinalizeCallbackTy FiniCB, bool IsNowait,
- llvm::Value *DidIt,
ArrayRef<llvm::Value *> CPVars = {},
ArrayRef<llvm::Function *> CPFuncs = {});
diff --git a/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp b/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
index 00d260ee3b5915..2cf208dc48bd13 100644
--- a/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
+++ b/llvm/lib/Frontend/OpenMP/OMPIRBuilder.cpp
@@ -4002,14 +4002,16 @@ OpenMPIRBuilder::createCopyPrivate(const LocationDescription &Loc,
OpenMPIRBuilder::InsertPointTy OpenMPIRBuilder::createSingle(
const LocationDescription &Loc, BodyGenCallbackTy BodyGenCB,
- FinalizeCallbackTy FiniCB, bool IsNowait, llvm::Value *DidIt,
- ArrayRef<llvm::Value *> CPVars, ArrayRef<llvm::Function *> CPFuncs) {
+ FinalizeCallbackTy FiniCB, bool IsNowait, ArrayRef<llvm::Value *> CPVars,
+ ArrayRef<llvm::Function *> CPFuncs) {
if (!updateToLocation(Loc))
return Loc.IP;
- // If needed (i.e. not null), initialize `DidIt` with 0
- if (DidIt) {
+ // If needed allocate and initialize `DidIt` with 0
+ llvm::Value *DidIt = nullptr;
+ if (!CPVars.empty()) {
+ DidIt = Builder.CreateAlloca(llvm::Type::getInt32Ty(Builder.getContext()));
Builder.CreateStore(Builder.getInt32(0), DidIt);
}
diff --git a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
index 58a9c4ffd63cdb..b1413a03d6b2bc 100644
--- a/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
+++ b/llvm/unittests/Frontend/OpenMPIRBuilderTest.cpp
@@ -3327,8 +3327,8 @@ TEST_F(OpenMPIRBuilderTest, SingleDirective) {
EXPECT_NE(IPBB->end(), IP.getPoint());
};
- Builder.restoreIP(OMPBuilder.createSingle(
- Builder, BodyGenCB, FiniCB, /*IsNowait*/ false, /*DidIt*/ nullptr));
+ Builder.restoreIP(
+ OMPBuilder.createSingle(Builder, BodyGenCB, FiniCB, /*IsNowait*/ false));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
@@ -3417,8 +3417,8 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveNowait) {
EXPECT_NE(IPBB->end(), IP.getPoint());
};
- Builder.restoreIP(OMPBuilder.createSingle(
- Builder, BodyGenCB, FiniCB, /*IsNowait*/ true, /*DidIt*/ nullptr));
+ Builder.restoreIP(
+ OMPBuilder.createSingle(Builder, BodyGenCB, FiniCB, /*IsNowait*/ true));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
EXPECT_TRUE(isa<BranchInst>(EntryBBTI));
@@ -3464,6 +3464,26 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveNowait) {
EXPECT_EQ(ExitBarrier, nullptr);
}
+// Helper class to check each instruction of a BB.
+class BBInstIter {
+ BasicBlock *BB;
+ BasicBlock::iterator BBI;
+
+public:
+ BBInstIter(BasicBlock *BB) : BB(BB), BBI(BB->begin()) {}
+
+ bool hasNext() const { return BBI != BB->end(); }
+
+ template <typename InstTy> InstTy *next() {
+ if (!hasNext())
+ return nullptr;
+ Instruction *Cur = &*BBI++;
+ if (!isa<InstTy>(Cur))
+ return nullptr;
+ return cast<InstTy>(Cur);
+ }
+};
+
TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
using InsertPointTy = OpenMPIRBuilder::InsertPointTy;
OpenMPIRBuilder OMPBuilder(*M);
@@ -3486,8 +3506,6 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
Function *CopyFunc =
Function::Create(CopyFuncTy, Function::PrivateLinkage, "copy_var", *M);
- Value *DidIt = Builder.CreateAlloca(Type::getInt32Ty(Builder.getContext()));
-
auto BodyGenCB = [&](InsertPointTy AllocaIP, InsertPointTy CodeGenIP) {
if (AllocaIP.isSet())
Builder.restoreIP(AllocaIP);
@@ -3514,11 +3532,12 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
auto FiniCB = [&](InsertPointTy IP) {
BasicBlock *IPBB = IP.getBlock();
+ // IP must be before the unconditional branch to ExitBB
EXPECT_NE(IPBB->end(), IP.getPoint());
};
Builder.restoreIP(OMPBuilder.createSingle(Builder, BodyGenCB, FiniCB,
- /*IsNowait*/ false, DidIt, {CPVar},
+ /*IsNowait*/ false, {CPVar},
{CopyFunc}));
Value *EntryBBTI = EntryBB->getTerminator();
EXPECT_NE(EntryBBTI, nullptr);
@@ -3537,33 +3556,47 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
EXPECT_EQ(SingleEntryCI->getCalledFunction()->getName(), "__kmpc_single");
EXPECT_TRUE(isa<GlobalVariable>(SingleEntryCI->getArgOperand(0)));
- CallInst *SingleEndCI = nullptr;
- for (auto &FI : *ThenBB) {
- Instruction *Cur = &FI;
- if (isa<CallInst>(Cur)) {
- SingleEndCI = cast<CallInst>(Cur);
- if (SingleEndCI->getCalledFunction()->getName() == "__kmpc_end_single")
- break;
- SingleEndCI = nullptr;
- }
- }
+ // check ThenBB
+ BBInstIter ThenBBI(ThenBB);
+ // load PrivAI
+ auto *PrivLI = ThenBBI.next<LoadInst>();
+ EXPECT_NE(PrivLI, nullptr);
+ EXPECT_EQ(PrivLI->getPointerOperand(), PrivAI);
+ // icmp
+ EXPECT_TRUE(ThenBBI.next<ICmpInst>());
+ // store 1, DidIt
+ auto *DidItSI = ThenBBI.next<StoreInst>();
+ EXPECT_NE(DidItSI, nullptr);
+ EXPECT_EQ(DidItSI->getValueOperand(),
+ ConstantInt::get(Type::getInt32Ty(Ctx), 1));
+ Value *DidIt = DidItSI->getPointerOperand();
+ // call __kmpc_end_single
+ auto *SingleEndCI = ThenBBI.next<CallInst>();
EXPECT_NE(SingleEndCI, nullptr);
+ EXPECT_EQ(SingleEndCI->getCalledFunction()->getName(), "__kmpc_end_single");
EXPECT_EQ(SingleEndCI->arg_size(), 2U);
EXPECT_TRUE(isa<GlobalVariable>(SingleEndCI->getArgOperand(0)));
EXPECT_EQ(SingleEndCI->getArgOperand(1), SingleEntryCI->getArgOperand(1));
-
- CallInst *CopyPrivateCI = nullptr;
- bool FoundBarrier = false;
- for (auto &FI : *ExitBB) {
- Instruction *Cur = &FI;
- if (auto *CI = dyn_cast<CallInst>(Cur)) {
- if (CI->getCalledFunction()->getName() == "__kmpc_barrier")
- FoundBarrier = true;
- else if (CI->getCalledFunction()->getName() == "__kmpc_copyprivate")
- CopyPrivateCI = CI;
- }
- }
- EXPECT_FALSE(FoundBarrier);
+ // br ExitBB
+ auto *ExitBBBI = ThenBBI.next<BranchInst>();
+ EXPECT_NE(ExitBBBI, nullptr);
+ EXPECT_TRUE(ExitBBBI->isUnconditional());
+ EXPECT_EQ(ExitBBBI->getOperand(0), ExitBB);
+ EXPECT_FALSE(ThenBBI.hasNext());
+
+ // check ExitBB
+ BBInstIter ExitBBI(ExitBB);
+ // call __kmpc_global_thread_num
+ auto *ThreadNumCI = ExitBBI.next<CallInst>();
+ EXPECT_NE(ThreadNumCI, nullptr);
+ EXPECT_EQ(ThreadNumCI->getCalledFunction()->getName(),
+ "__kmpc_global_thread_num");
+ // load DidIt
+ auto *DidItLI = ExitBBI.next<LoadInst>();
+ EXPECT_NE(DidItLI, nullptr);
+ EXPECT_EQ(DidItLI->getPointerOperand(), DidIt);
+ // call __kmpc_copyprivate
+ auto *CopyPrivateCI = ExitBBI.next<CallInst>();
EXPECT_NE(CopyPrivateCI, nullptr);
EXPECT_EQ(CopyPrivateCI->arg_size(), 6U);
EXPECT_TRUE(isa<AllocaInst>(CopyPrivateCI->getArgOperand(3)));
@@ -3571,8 +3604,9 @@ TEST_F(OpenMPIRBuilderTest, SingleDirectiveCopyPrivate) {
EXPECT_TRUE(isa<Function>(CopyPrivateCI->getArgOperand(4)));
EXPECT_EQ(CopyPrivateCI->getArgOperand(4), CopyFunc);
EXPECT_TRUE(isa<LoadInst>(CopyPrivateCI->getArgOperand(5)));
- LoadInst *DidItLI = cast<LoadInst>(CopyPrivateCI->getArgOperand(5));
+ DidItLI = cast<LoadInst>(CopyPrivateCI->getArgOperand(5));
EXPECT_EQ(DidItLI->getOperand(0), DidIt);
+ EXPECT_FALSE(ExitBBI.hasNext());
}
TEST_F(OpenMPIRBuilderTest, OMPAtomicReadFlt) {
diff --git a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
index fe873dc6135ad4..3c1a4a995932e4 100644
--- a/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
+++ b/mlir/lib/Target/LLVMIR/Dialect/OpenMP/OpenMPToLLVMIRTranslation.cpp
@@ -669,13 +669,9 @@ convertOmpSingle(omp::SingleOp &singleOp, llvm::IRBuilderBase &builder,
llvmCPFuncs.push_back(
moduleTranslation.lookupFunction(llvmFuncOp.getName()));
}
- llvm::Value *didIt = nullptr;
- if (!llvmCPVars.empty())
- didIt = builder.CreateAlloca(llvm::Type::getInt32Ty(builder.getContext()));
builder.restoreIP(moduleTranslation.getOpenMPBuilder()->createSingle(
- ompLoc, bodyCB, finiCB, singleOp.getNowait(), didIt, llvmCPVars,
- llvmCPFuncs));
+ ompLoc, bodyCB, finiCB, singleOp.getNowait(), llvmCPVars, llvmCPFuncs));
return bodyGenStatus;
}
>From 20dec926b772f62d6b8b09ec2e087f3620d29079 Mon Sep 17 00:00:00 2001
From: Leandro Lupori <leandro.lupori at linaro.org>
Date: Fri, 2 Feb 2024 17:28:55 -0300
Subject: [PATCH 3/3] [flang][OpenMP] Integration test for copyprivate
---
flang/test/Integration/OpenMP/copyprivate.f90 | 97 +++++++++++++++++++
1 file changed, 97 insertions(+)
create mode 100644 flang/test/Integration/OpenMP/copyprivate.f90
diff --git a/flang/test/Integration/OpenMP/copyprivate.f90 b/flang/test/Integration/OpenMP/copyprivate.f90
new file mode 100644
index 00000000000000..9318b743a95290
--- /dev/null
+++ b/flang/test/Integration/OpenMP/copyprivate.f90
@@ -0,0 +1,97 @@
+!===----------------------------------------------------------------------===!
+! This directory can be used to add Integration tests involving multiple
+! stages of the compiler (for eg. from Fortran to LLVM IR). It should not
+! contain executable tests. We should only add tests here sparingly and only
+! if there is no other way to test. Repeat this message in each test that is
+! added to this directory and sub-directories.
+!===----------------------------------------------------------------------===!
+
+!RUN: %flang_fc1 -emit-llvm -fopenmp %s -o - | FileCheck %s
+
+!CHECK-DAG: define void @_copy_box_Uxi32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_10xi32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_i64(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_box_Uxi64(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_f32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_2x3xf32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_z32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_10xz32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_l32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_5xl32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_c8x8(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_10xc8x8(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_c16x5(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_rec__QFtest_typesTdt(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_box_heap_Uxi32(ptr %{{.*}}, ptr %{{.*}})
+!CHECK-DAG: define void @_copy_box_ptr_Uxc8x9(ptr %{{.*}}, ptr %{{.*}})
+
+!CHECK-LABEL: define void @_copy_i32(
+!CHECK-SAME: ptr %[[DST:.*]], ptr %[[SRC:.*]]) {
+!CHECK-NEXT: %[[SRC_VAL:.*]] = load i32, ptr %[[SRC]]
+!CHECK-NEXT: store i32 %[[SRC_VAL]], ptr %[[DST]]
+!CHECK-NEXT: ret void
+!CHECK-NEXT: }
+
+!CHECK-LABEL: define internal void @test_scalar_..omp_par({{.*}})
+!CHECK: %[[I:.*]] = alloca i32, i64 1
+!CHECK: %[[J:.*]] = alloca i32, i64 1
+!CHECK: %[[DID_IT:.*]] = alloca i32
+!CHECK: store i32 0, ptr %[[DID_IT]]
+!CHECK: %[[THREAD_NUM1:.*]] = call i32 @__kmpc_global_thread_num(ptr @[[LOC:.*]])
+!CHECK: %[[RET:.*]] = call i32 @__kmpc_single({{.*}})
+!CHECK: %[[NOT_ZERO:.*]] = icmp ne i32 %[[RET]], 0
+!CHECK: br i1 %[[NOT_ZERO]], label %[[OMP_REGION_BODY:.*]], label %[[OMP_REGION_END:.*]]
+
+!CHECK: [[OMP_REGION_END]]:
+!CHECK: %[[THREAD_NUM2:.*]] = call i32 @__kmpc_global_thread_num(ptr @[[LOC:.*]])
+!CHECK: %[[DID_IT_VAL:.*]] = load i32, ptr %[[DID_IT]]
+!CHECK: call void @__kmpc_copyprivate(ptr @[[LOC]], i32 %[[THREAD_NUM2]], i64 0, ptr %[[I]], ptr @_copy_i32, i32 %[[DID_IT_VAL]])
+!CHECK: %[[THREAD_NUM3:.*]] = call i32 @__kmpc_global_thread_num(ptr @[[LOC]])
+!CHECK: %[[DID_IT_VAL2:.*]] = load i32, ptr %[[DID_IT]]
+!CHECK: call void @__kmpc_copyprivate(ptr @[[LOC]], i32 %[[THREAD_NUM3]], i64 0, ptr %[[J]], ptr @_copy_i32, i32 %[[DID_IT_VAL2]])
+
+!CHECK: [[OMP_REGION_BODY]]:
+!CHECK: br label %[[OMP_SINGLE_REGION:.*]]
+!CHECK: [[OMP_SINGLE_REGION]]:
+!CHECK: store i32 11, ptr %[[I]]
+!CHECK: store i32 22, ptr %[[J]]
+!CHECK: br label %[[OMP_REGION_CONT3:.*]]
+!CHECK: [[OMP_REGION_CONT3:.*]]:
+!CHECK: store i32 1, ptr %[[DID_IT]]
+!CHECK: call void @__kmpc_end_single(ptr @[[LOC]], i32 %[[THREAD_NUM1]])
+!CHECK: br label %[[OMP_REGION_END]]
+subroutine test_scalar()
+ integer :: i, j
+
+ !$omp parallel private(i, j)
+ !$omp single
+ i = 11
+ j = 22
+ !$omp end single copyprivate(i, j)
+ !$omp end parallel
+end subroutine
+
+subroutine test_types(a, n)
+ integer :: a(:), n
+ integer(4) :: i4, i4a(10)
+ integer(8) :: i8, i8a(n)
+ real :: r, ra(2, 3)
+ complex :: z, za(10)
+ logical :: l, la(5)
+ character(kind=1, len=8) :: c1, c1a(10)
+ character(kind=2, len=5) :: c2
+
+ type dt
+ integer :: i
+ real :: r
+ end type
+ type(dt) :: t
+
+ integer, allocatable :: aloc(:)
+ character(kind=1, len=9), pointer :: ptr(:)
+
+ !$omp parallel private(a, i4, i4a, i8, i8a, r, ra, z, za, l, la, c1, c1a, c2, t, aloc, ptr)
+ !$omp single
+ !$omp end single copyprivate(a, i4, i4a, i8, i8a, r, ra, z, za, l, la, c1, c1a, c2, t, aloc, ptr)
+ !$omp end parallel
+end subroutine
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