https://github.com/jhuber6 updated
https://github.com/llvm/llvm-project/pull/115545
>From 9b8cb87e0e12899df3a5af7f312f637a6c242921 Mon Sep 17 00:00:00 2001
From: Joseph Huber <hube...@outlook.com>
Date: Fri, 8 Nov 2024 15:42:04 -0600
Subject: [PATCH 1/4] [Clang] Add support for scoped atomic thread fence
Summary:
Previously we added support for all of the atomic GNU extensions with
optional memory scoped except for `__atomic_thread_fence`. This patch
adds support for that. This should ideally allow us to generically emit
these LLVM scopes.
---
clang/include/clang/Basic/Builtins.td | 6 +
clang/lib/CodeGen/CGBuiltin.cpp | 129 +++++++++++++++++++
clang/test/CodeGen/scoped-fence-ops.c | 179 ++++++++++++++++++++++++++
3 files changed, 314 insertions(+)
create mode 100644 clang/test/CodeGen/scoped-fence-ops.c
diff --git a/clang/include/clang/Basic/Builtins.td
b/clang/include/clang/Basic/Builtins.td
index 4360e0bf9840f13..82ba26085e9267f 100644
--- a/clang/include/clang/Basic/Builtins.td
+++ b/clang/include/clang/Basic/Builtins.td
@@ -1995,6 +1995,12 @@ def AtomicThreadFence : Builtin {
let Prototype = "void(int)";
}
+def ScopedAtomicThreadFence : Builtin {
+ let Spellings = ["__scoped_atomic_thread_fence"];
+ let Attributes = [NoThrow];
+ let Prototype = "void(int, int)";
+}
+
def AtomicSignalFence : Builtin {
let Spellings = ["__atomic_signal_fence"];
let Attributes = [NoThrow];
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 430ac5626f89d7f..c8f90df2546f256 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -5162,6 +5162,135 @@ RValue CodeGenFunction::EmitBuiltinExpr(const
GlobalDecl GD, unsigned BuiltinID,
Builder.SetInsertPoint(ContBB);
return RValue::get(nullptr);
}
+ case Builtin::BI__scoped_atomic_thread_fence: {
+ auto ScopeModel = AtomicScopeModel::create(AtomicScopeModelKind::Generic);
+
+ Value *Order = EmitScalarExpr(E->getArg(0));
+ Value *Scope = EmitScalarExpr(E->getArg(1));
+ if (isa<llvm::ConstantInt>(Order) && isa<llvm::ConstantInt>(Scope)) {
+ int Ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
+ int Scp = cast<llvm::ConstantInt>(Scope)->getZExtValue();
+ SyncScope SS = ScopeModel->isValid(Scp)
+ ? ScopeModel->map(Scp)
+ : ScopeModel->map(ScopeModel->getFallBackValue());
+ switch (Ord) {
+ case 0: // memory_order_relaxed
+ default: // invalid order
+ break;
+ case 1: // memory_order_consume
+ case 2: // memory_order_acquire
+ Builder.CreateFence(
+ llvm::AtomicOrdering::Acquire,
+ getTargetHooks().getLLVMSyncScopeID(getLangOpts(), SS,
+ llvm::AtomicOrdering::Acquire,
+ getLLVMContext()));
+ break;
+ case 3: // memory_order_release
+ Builder.CreateFence(
+ llvm::AtomicOrdering::Release,
+ getTargetHooks().getLLVMSyncScopeID(getLangOpts(), SS,
+ llvm::AtomicOrdering::Release,
+ getLLVMContext()));
+ break;
+ case 4: // memory_order_acq_rel
+ Builder.CreateFence(llvm::AtomicOrdering::AcquireRelease,
+ getTargetHooks().getLLVMSyncScopeID(
+ getLangOpts(), SS,
+ llvm::AtomicOrdering::AcquireRelease,
+ getLLVMContext()));
+ break;
+ case 5: // memory_order_seq_cst
+ Builder.CreateFence(llvm::AtomicOrdering::SequentiallyConsistent,
+ getTargetHooks().getLLVMSyncScopeID(
+ getLangOpts(), SS,
+ llvm::AtomicOrdering::SequentiallyConsistent,
+ getLLVMContext()));
+ break;
+ }
+ return RValue::get(nullptr);
+ }
+
+ llvm::BasicBlock *ContBB = createBasicBlock("atomic.scope.continue",
CurFn);
+
+ llvm::DenseMap<llvm::BasicBlock *, llvm::AtomicOrdering> OrderBBs;
+ if (isa<llvm::ConstantInt>(Order)) {
+ int Ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
+ switch (Ord) {
+ case 0: // memory_order_relaxed
+ default: // invalid order
+ ContBB->eraseFromParent();
+ return RValue::get(nullptr);
+ case 1: // memory_order_consume
+ case 2: // memory_order_acquire
+ OrderBBs[Builder.GetInsertBlock()] = llvm::AtomicOrdering::Acquire;
+ break;
+ case 3: // memory_order_release
+ OrderBBs[Builder.GetInsertBlock()] = llvm::AtomicOrdering::Release;
+ break;
+ case 4: // memory_order_acq_rel
+ OrderBBs[Builder.GetInsertBlock()] =
+ llvm::AtomicOrdering::AcquireRelease;
+ break;
+ case 5: // memory_order_seq_cst
+ OrderBBs[Builder.GetInsertBlock()] =
+ llvm::AtomicOrdering::SequentiallyConsistent;
+ break;
+ }
+ } else {
+ llvm::BasicBlock *AcquireBB, *ReleaseBB, *AcqRelBB, *SeqCstBB;
+ AcquireBB = createBasicBlock("acquire", CurFn);
+ ReleaseBB = createBasicBlock("release", CurFn);
+ AcqRelBB = createBasicBlock("acqrel", CurFn);
+ SeqCstBB = createBasicBlock("seqcst", CurFn);
+
+ Order = Builder.CreateIntCast(Order, Builder.getInt32Ty(), false);
+ llvm::SwitchInst *SI = Builder.CreateSwitch(Order, ContBB);
+ SI->addCase(Builder.getInt32(1), AcquireBB);
+ SI->addCase(Builder.getInt32(2), AcquireBB);
+ SI->addCase(Builder.getInt32(3), ReleaseBB);
+ SI->addCase(Builder.getInt32(4), AcqRelBB);
+ SI->addCase(Builder.getInt32(5), SeqCstBB);
+
+ OrderBBs[AcquireBB] = llvm::AtomicOrdering::Acquire;
+ OrderBBs[ReleaseBB] = llvm::AtomicOrdering::Release;
+ OrderBBs[AcqRelBB] = llvm::AtomicOrdering::AcquireRelease;
+ OrderBBs[SeqCstBB] = llvm::AtomicOrdering::SequentiallyConsistent;
+ }
+
+ for (auto &[OrderBB, Ordering] : OrderBBs) {
+ Builder.SetInsertPoint(OrderBB);
+ if (isa<llvm::ConstantInt>(Scope)) {
+ int Scp = cast<llvm::ConstantInt>(Scope)->getZExtValue();
+ SyncScope SS = ScopeModel->isValid(Scp)
+ ? ScopeModel->map(Scp)
+ : ScopeModel->map(ScopeModel->getFallBackValue());
+ Builder.CreateFence(Ordering,
+ getTargetHooks().getLLVMSyncScopeID(
+ getLangOpts(), SS, Ordering,
getLLVMContext()));
+ Builder.CreateBr(ContBB);
+ } else {
+ llvm::DenseMap<unsigned, llvm::BasicBlock *> BBs;
+ for (unsigned Scp : ScopeModel->getRuntimeValues())
+ BBs[Scp] = createBasicBlock(getAsString(ScopeModel->map(Scp)),
CurFn);
+
+ auto *SC = Builder.CreateIntCast(Scope, Builder.getInt32Ty(), false);
+ llvm::SwitchInst *SI = Builder.CreateSwitch(SC, ContBB);
+ for (unsigned Scp : ScopeModel->getRuntimeValues()) {
+ auto *B = BBs[Scp];
+ SI->addCase(Builder.getInt32(Scp), B);
+
+ Builder.SetInsertPoint(B);
+ Builder.CreateFence(Ordering, getTargetHooks().getLLVMSyncScopeID(
+ getLangOpts(),
ScopeModel->map(Scp),
+ Ordering, getLLVMContext()));
+ Builder.CreateBr(ContBB);
+ }
+ }
+ }
+
+ Builder.SetInsertPoint(ContBB);
+ return RValue::get(nullptr);
+ }
case Builtin::BI__builtin_signbit:
case Builtin::BI__builtin_signbitf:
diff --git a/clang/test/CodeGen/scoped-fence-ops.c
b/clang/test/CodeGen/scoped-fence-ops.c
new file mode 100644
index 000000000000000..cb48176d37c8522
--- /dev/null
+++ b/clang/test/CodeGen/scoped-fence-ops.c
@@ -0,0 +1,179 @@
+// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --version 5
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=amdgcn-amd-amdhsa -ffreestanding
\
+// RUN: -fvisibility=hidden | FileCheck --check-prefix=AMDGCN %s
+//: %clang_cc1 %s -emit-llvm -o - -triple=spirv64-unknown-unknown
-ffreestanding \
+//: -fvisibility=hidden | FileCheck --check-prefix=SPIRV %s
+
+//
+// SPIRV-LABEL: define hidden spir_func void @fe1a(
+// SPIRV-SAME: ) #[[ATTR0:[0-9]+]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: fence syncscope("workgroup") release
+// SPIRV-NEXT: ret void
+// AMDGCN-LABEL: define hidden void @fe1a(
+// AMDGCN-SAME: ) #[[ATTR0:[0-9]+]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") release
+// AMDGCN-NEXT: ret void
+//
+void fe1a() {
+ __scoped_atomic_thread_fence(__ATOMIC_RELEASE, __MEMORY_SCOPE_WRKGRP);
+}
+
+//
+// SPIRV-LABEL: define hidden spir_func void @fe1b(
+// SPIRV-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: [[ORD_ADDR:%.*]] = alloca i32, align 4
+// SPIRV-NEXT: store i32 [[ORD]], ptr [[ORD_ADDR]], align 4
+// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[ORD_ADDR]], align 4
+// SPIRV-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// SPIRV-NEXT: i32 1, label %[[ACQUIRE:.*]]
+// SPIRV-NEXT: i32 2, label %[[ACQUIRE]]
+// SPIRV-NEXT: i32 3, label %[[RELEASE:.*]]
+// SPIRV-NEXT: i32 4, label %[[ACQREL:.*]]
+// SPIRV-NEXT: i32 5, label %[[SEQCST:.*]]
+// SPIRV-NEXT: ]
+// SPIRV: [[ATOMIC_SCOPE_CONTINUE]]:
+// SPIRV-NEXT: ret void
+// SPIRV: [[ACQUIRE]]:
+// SPIRV-NEXT: fence syncscope("workgroup") acquire
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[RELEASE]]:
+// SPIRV-NEXT: fence syncscope("workgroup") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[ACQREL]]:
+// SPIRV-NEXT: fence syncscope("workgroup") acq_rel
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[SEQCST]]:
+// SPIRV-NEXT: fence syncscope("workgroup") seq_cst
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN-LABEL: define hidden void @fe1b(
+// AMDGCN-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: [[ORD_ADDR:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGCN-NEXT: [[ORD_ADDR_ASCAST:%.*]] = addrspacecast ptr addrspace(5)
[[ORD_ADDR]] to ptr
+// AMDGCN-NEXT: store i32 [[ORD]], ptr [[ORD_ADDR_ASCAST]], align 4
+// AMDGCN-NEXT: [[TMP0:%.*]] = load i32, ptr [[ORD_ADDR_ASCAST]], align 4
+// AMDGCN-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// AMDGCN-NEXT: i32 1, label %[[ACQUIRE:.*]]
+// AMDGCN-NEXT: i32 2, label %[[ACQUIRE]]
+// AMDGCN-NEXT: i32 3, label %[[RELEASE:.*]]
+// AMDGCN-NEXT: i32 4, label %[[ACQREL:.*]]
+// AMDGCN-NEXT: i32 5, label %[[SEQCST:.*]]
+// AMDGCN-NEXT: ]
+// AMDGCN: [[ATOMIC_SCOPE_CONTINUE]]:
+// AMDGCN-NEXT: ret void
+// AMDGCN: [[ACQUIRE]]:
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") acquire
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[RELEASE]]:
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[ACQREL]]:
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") acq_rel
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[SEQCST]]:
+// AMDGCN-NEXT: fence syncscope("workgroup") seq_cst
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
+void fe1b(int ord) {
+ __scoped_atomic_thread_fence(ord, __MEMORY_SCOPE_WRKGRP);
+}
+
+//
+// SPIRV-LABEL: define hidden spir_func void @fe1c(
+// SPIRV-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: [[SCOPE_ADDR:%.*]] = alloca i32, align 4
+// SPIRV-NEXT: store i32 [[SCOPE]], ptr [[SCOPE_ADDR]], align 4
+// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCOPE_ADDR]], align 4
+// SPIRV-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// SPIRV-NEXT: i32 1, label %[[DEVICE_SCOPE:.*]]
+// SPIRV-NEXT: i32 0, label %[[SYSTEM_SCOPE:.*]]
+// SPIRV-NEXT: i32 2, label %[[WORKGROUP_SCOPE:.*]]
+// SPIRV-NEXT: i32 3, label %[[WAVEFRONT_SCOPE:.*]]
+// SPIRV-NEXT: i32 4, label %[[SINGLE_SCOPE:.*]]
+// SPIRV-NEXT: ]
+// SPIRV: [[ATOMIC_SCOPE_CONTINUE]]:
+// SPIRV-NEXT: ret void
+// SPIRV: [[DEVICE_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("device") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[SYSTEM_SCOPE]]:
+// SPIRV-NEXT: fence release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[WORKGROUP_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("workgroup") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[WAVEFRONT_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("subgroup") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[SINGLE_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("singlethread") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN-LABEL: define hidden void @fe1c(
+// AMDGCN-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: [[SCOPE_ADDR:%.*]] = alloca i32, align 4, addrspace(5)
+// AMDGCN-NEXT: [[SCOPE_ADDR_ASCAST:%.*]] = addrspacecast ptr addrspace(5)
[[SCOPE_ADDR]] to ptr
+// AMDGCN-NEXT: store i32 [[SCOPE]], ptr [[SCOPE_ADDR_ASCAST]], align 4
+// AMDGCN-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCOPE_ADDR_ASCAST]], align 4
+// AMDGCN-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// AMDGCN-NEXT: i32 1, label %[[DEVICE_SCOPE:.*]]
+// AMDGCN-NEXT: i32 0, label %[[SYSTEM_SCOPE:.*]]
+// AMDGCN-NEXT: i32 2, label %[[WORKGROUP_SCOPE:.*]]
+// AMDGCN-NEXT: i32 3, label %[[WAVEFRONT_SCOPE:.*]]
+// AMDGCN-NEXT: i32 4, label %[[SINGLE_SCOPE:.*]]
+// AMDGCN-NEXT: ]
+// AMDGCN: [[ATOMIC_SCOPE_CONTINUE]]:
+// AMDGCN-NEXT: ret void
+// AMDGCN: [[DEVICE_SCOPE]]:
+// AMDGCN-NEXT: fence syncscope("agent-one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[SYSTEM_SCOPE]]:
+// AMDGCN-NEXT: fence syncscope("one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[WORKGROUP_SCOPE]]:
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[WAVEFRONT_SCOPE]]:
+// AMDGCN-NEXT: fence syncscope("wavefront-one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// AMDGCN: [[SINGLE_SCOPE]]:
+// AMDGCN-NEXT: fence syncscope("singlethread-one-as") release
+// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
+void fe1c(int scope) {
+ __scoped_atomic_thread_fence(__ATOMIC_RELEASE, scope);
+}
+
+//
+// SPIRV-LABEL: define hidden spir_func void @fe2a(
+// SPIRV-SAME: ) #[[ATTR0]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: ret void
+// AMDGCN-LABEL: define hidden void @fe2a(
+// AMDGCN-SAME: ) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: ret void
+//
+void fe2a() {
+ __scoped_atomic_thread_fence(999, __MEMORY_SCOPE_SYSTEM);
+}
+
+//
+// SPIRV-LABEL: define hidden spir_func void @fe2b(
+// SPIRV-SAME: ) #[[ATTR0]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: fence release
+// SPIRV-NEXT: ret void
+// AMDGCN-LABEL: define hidden void @fe2b(
+// AMDGCN-SAME: ) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: fence syncscope("one-as") release
+// AMDGCN-NEXT: ret void
+//
+void fe2b() {
+ __scoped_atomic_thread_fence(__ATOMIC_RELEASE, 999);
+}
>From 7f6e87d6a09bdc3bcc5de0cdc392459d2fbac40b Mon Sep 17 00:00:00 2001
From: Joseph Huber <hube...@outlook.com>
Date: Fri, 8 Nov 2024 16:02:29 -0600
Subject: [PATCH 2/4] x86 test
---
clang/test/CodeGen/scoped-fence-ops.c | 216 ++++++++++++++++++--------
1 file changed, 147 insertions(+), 69 deletions(-)
diff --git a/clang/test/CodeGen/scoped-fence-ops.c
b/clang/test/CodeGen/scoped-fence-ops.c
index cb48176d37c8522..376cb11e84d3da5 100644
--- a/clang/test/CodeGen/scoped-fence-ops.c
+++ b/clang/test/CodeGen/scoped-fence-ops.c
@@ -1,53 +1,33 @@
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
UTC_ARGS: --version 5
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=amdgcn-amd-amdhsa -ffreestanding
\
// RUN: -fvisibility=hidden | FileCheck --check-prefix=AMDGCN %s
-//: %clang_cc1 %s -emit-llvm -o - -triple=spirv64-unknown-unknown
-ffreestanding \
-//: -fvisibility=hidden | FileCheck --check-prefix=SPIRV %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=spirv64-unknown-unknown
-ffreestanding \
+// RUN: -fvisibility=hidden | FileCheck --check-prefix=SPIRV %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-unknown-linux-gnu
-ffreestanding \
+// RUN: -fvisibility=hidden | FileCheck --check-prefix=X86_64 %s
+// AMDGCN-LABEL: define hidden void @fe1a(
+// AMDGCN-SAME: ) #[[ATTR0:[0-9]+]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: fence syncscope("workgroup-one-as") release
+// AMDGCN-NEXT: ret void
//
// SPIRV-LABEL: define hidden spir_func void @fe1a(
// SPIRV-SAME: ) #[[ATTR0:[0-9]+]] {
// SPIRV-NEXT: [[ENTRY:.*:]]
// SPIRV-NEXT: fence syncscope("workgroup") release
// SPIRV-NEXT: ret void
-// AMDGCN-LABEL: define hidden void @fe1a(
-// AMDGCN-SAME: ) #[[ATTR0:[0-9]+]] {
-// AMDGCN-NEXT: [[ENTRY:.*:]]
-// AMDGCN-NEXT: fence syncscope("workgroup-one-as") release
-// AMDGCN-NEXT: ret void
+//
+// X86_64-LABEL: define hidden void @fe1a(
+// X86_64-SAME: ) #[[ATTR0:[0-9]+]] {
+// X86_64-NEXT: [[ENTRY:.*:]]
+// X86_64-NEXT: fence release
+// X86_64-NEXT: ret void
//
void fe1a() {
__scoped_atomic_thread_fence(__ATOMIC_RELEASE, __MEMORY_SCOPE_WRKGRP);
}
-//
-// SPIRV-LABEL: define hidden spir_func void @fe1b(
-// SPIRV-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
-// SPIRV-NEXT: [[ENTRY:.*:]]
-// SPIRV-NEXT: [[ORD_ADDR:%.*]] = alloca i32, align 4
-// SPIRV-NEXT: store i32 [[ORD]], ptr [[ORD_ADDR]], align 4
-// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[ORD_ADDR]], align 4
-// SPIRV-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
-// SPIRV-NEXT: i32 1, label %[[ACQUIRE:.*]]
-// SPIRV-NEXT: i32 2, label %[[ACQUIRE]]
-// SPIRV-NEXT: i32 3, label %[[RELEASE:.*]]
-// SPIRV-NEXT: i32 4, label %[[ACQREL:.*]]
-// SPIRV-NEXT: i32 5, label %[[SEQCST:.*]]
-// SPIRV-NEXT: ]
-// SPIRV: [[ATOMIC_SCOPE_CONTINUE]]:
-// SPIRV-NEXT: ret void
-// SPIRV: [[ACQUIRE]]:
-// SPIRV-NEXT: fence syncscope("workgroup") acquire
-// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[RELEASE]]:
-// SPIRV-NEXT: fence syncscope("workgroup") release
-// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[ACQREL]]:
-// SPIRV-NEXT: fence syncscope("workgroup") acq_rel
-// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[SEQCST]]:
-// SPIRV-NEXT: fence syncscope("workgroup") seq_cst
-// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
// AMDGCN-LABEL: define hidden void @fe1b(
// AMDGCN-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
// AMDGCN-NEXT: [[ENTRY:.*:]]
@@ -77,41 +57,66 @@ void fe1a() {
// AMDGCN-NEXT: fence syncscope("workgroup") seq_cst
// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
//
-void fe1b(int ord) {
- __scoped_atomic_thread_fence(ord, __MEMORY_SCOPE_WRKGRP);
-}
-
-//
-// SPIRV-LABEL: define hidden spir_func void @fe1c(
-// SPIRV-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
+// SPIRV-LABEL: define hidden spir_func void @fe1b(
+// SPIRV-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
// SPIRV-NEXT: [[ENTRY:.*:]]
-// SPIRV-NEXT: [[SCOPE_ADDR:%.*]] = alloca i32, align 4
-// SPIRV-NEXT: store i32 [[SCOPE]], ptr [[SCOPE_ADDR]], align 4
-// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCOPE_ADDR]], align 4
+// SPIRV-NEXT: [[ORD_ADDR:%.*]] = alloca i32, align 4
+// SPIRV-NEXT: store i32 [[ORD]], ptr [[ORD_ADDR]], align 4
+// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[ORD_ADDR]], align 4
// SPIRV-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
-// SPIRV-NEXT: i32 1, label %[[DEVICE_SCOPE:.*]]
-// SPIRV-NEXT: i32 0, label %[[SYSTEM_SCOPE:.*]]
-// SPIRV-NEXT: i32 2, label %[[WORKGROUP_SCOPE:.*]]
-// SPIRV-NEXT: i32 3, label %[[WAVEFRONT_SCOPE:.*]]
-// SPIRV-NEXT: i32 4, label %[[SINGLE_SCOPE:.*]]
+// SPIRV-NEXT: i32 1, label %[[ACQUIRE:.*]]
+// SPIRV-NEXT: i32 2, label %[[ACQUIRE]]
+// SPIRV-NEXT: i32 3, label %[[RELEASE:.*]]
+// SPIRV-NEXT: i32 4, label %[[ACQREL:.*]]
+// SPIRV-NEXT: i32 5, label %[[SEQCST:.*]]
// SPIRV-NEXT: ]
// SPIRV: [[ATOMIC_SCOPE_CONTINUE]]:
// SPIRV-NEXT: ret void
-// SPIRV: [[DEVICE_SCOPE]]:
-// SPIRV-NEXT: fence syncscope("device") release
-// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[SYSTEM_SCOPE]]:
-// SPIRV-NEXT: fence release
+// SPIRV: [[ACQUIRE]]:
+// SPIRV-NEXT: fence syncscope("workgroup") acquire
// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[WORKGROUP_SCOPE]]:
+// SPIRV: [[RELEASE]]:
// SPIRV-NEXT: fence syncscope("workgroup") release
// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[WAVEFRONT_SCOPE]]:
-// SPIRV-NEXT: fence syncscope("subgroup") release
+// SPIRV: [[ACQREL]]:
+// SPIRV-NEXT: fence syncscope("workgroup") acq_rel
// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
-// SPIRV: [[SINGLE_SCOPE]]:
-// SPIRV-NEXT: fence syncscope("singlethread") release
+// SPIRV: [[SEQCST]]:
+// SPIRV-NEXT: fence syncscope("workgroup") seq_cst
// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
+// X86_64-LABEL: define hidden void @fe1b(
+// X86_64-SAME: i32 noundef [[ORD:%.*]]) #[[ATTR0]] {
+// X86_64-NEXT: [[ENTRY:.*:]]
+// X86_64-NEXT: [[ORD_ADDR:%.*]] = alloca i32, align 4
+// X86_64-NEXT: store i32 [[ORD]], ptr [[ORD_ADDR]], align 4
+// X86_64-NEXT: [[TMP0:%.*]] = load i32, ptr [[ORD_ADDR]], align 4
+// X86_64-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// X86_64-NEXT: i32 1, label %[[ACQUIRE:.*]]
+// X86_64-NEXT: i32 2, label %[[ACQUIRE]]
+// X86_64-NEXT: i32 3, label %[[RELEASE:.*]]
+// X86_64-NEXT: i32 4, label %[[ACQREL:.*]]
+// X86_64-NEXT: i32 5, label %[[SEQCST:.*]]
+// X86_64-NEXT: ]
+// X86_64: [[ATOMIC_SCOPE_CONTINUE]]:
+// X86_64-NEXT: ret void
+// X86_64: [[ACQUIRE]]:
+// X86_64-NEXT: fence acquire
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[RELEASE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[ACQREL]]:
+// X86_64-NEXT: fence acq_rel
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[SEQCST]]:
+// X86_64-NEXT: fence seq_cst
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
+void fe1b(int ord) {
+ __scoped_atomic_thread_fence(ord, __MEMORY_SCOPE_WRKGRP);
+}
+
// AMDGCN-LABEL: define hidden void @fe1c(
// AMDGCN-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
// AMDGCN-NEXT: [[ENTRY:.*:]]
@@ -144,35 +149,108 @@ void fe1b(int ord) {
// AMDGCN-NEXT: fence syncscope("singlethread-one-as") release
// AMDGCN-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
//
+// SPIRV-LABEL: define hidden spir_func void @fe1c(
+// SPIRV-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
+// SPIRV-NEXT: [[ENTRY:.*:]]
+// SPIRV-NEXT: [[SCOPE_ADDR:%.*]] = alloca i32, align 4
+// SPIRV-NEXT: store i32 [[SCOPE]], ptr [[SCOPE_ADDR]], align 4
+// SPIRV-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCOPE_ADDR]], align 4
+// SPIRV-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// SPIRV-NEXT: i32 1, label %[[DEVICE_SCOPE:.*]]
+// SPIRV-NEXT: i32 0, label %[[SYSTEM_SCOPE:.*]]
+// SPIRV-NEXT: i32 2, label %[[WORKGROUP_SCOPE:.*]]
+// SPIRV-NEXT: i32 3, label %[[WAVEFRONT_SCOPE:.*]]
+// SPIRV-NEXT: i32 4, label %[[SINGLE_SCOPE:.*]]
+// SPIRV-NEXT: ]
+// SPIRV: [[ATOMIC_SCOPE_CONTINUE]]:
+// SPIRV-NEXT: ret void
+// SPIRV: [[DEVICE_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("device") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[SYSTEM_SCOPE]]:
+// SPIRV-NEXT: fence release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[WORKGROUP_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("workgroup") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[WAVEFRONT_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("subgroup") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// SPIRV: [[SINGLE_SCOPE]]:
+// SPIRV-NEXT: fence syncscope("singlethread") release
+// SPIRV-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
+// X86_64-LABEL: define hidden void @fe1c(
+// X86_64-SAME: i32 noundef [[SCOPE:%.*]]) #[[ATTR0]] {
+// X86_64-NEXT: [[ENTRY:.*:]]
+// X86_64-NEXT: [[SCOPE_ADDR:%.*]] = alloca i32, align 4
+// X86_64-NEXT: store i32 [[SCOPE]], ptr [[SCOPE_ADDR]], align 4
+// X86_64-NEXT: [[TMP0:%.*]] = load i32, ptr [[SCOPE_ADDR]], align 4
+// X86_64-NEXT: switch i32 [[TMP0]], label %[[ATOMIC_SCOPE_CONTINUE:.*]] [
+// X86_64-NEXT: i32 1, label %[[DEVICE_SCOPE:.*]]
+// X86_64-NEXT: i32 0, label %[[SYSTEM_SCOPE:.*]]
+// X86_64-NEXT: i32 2, label %[[WORKGROUP_SCOPE:.*]]
+// X86_64-NEXT: i32 3, label %[[WAVEFRONT_SCOPE:.*]]
+// X86_64-NEXT: i32 4, label %[[SINGLE_SCOPE:.*]]
+// X86_64-NEXT: ]
+// X86_64: [[ATOMIC_SCOPE_CONTINUE]]:
+// X86_64-NEXT: ret void
+// X86_64: [[DEVICE_SCOPE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[SYSTEM_SCOPE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[WORKGROUP_SCOPE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[WAVEFRONT_SCOPE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+// X86_64: [[SINGLE_SCOPE]]:
+// X86_64-NEXT: fence release
+// X86_64-NEXT: br label %[[ATOMIC_SCOPE_CONTINUE]]
+//
void fe1c(int scope) {
__scoped_atomic_thread_fence(__ATOMIC_RELEASE, scope);
}
+// AMDGCN-LABEL: define hidden void @fe2a(
+// AMDGCN-SAME: ) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: ret void
//
// SPIRV-LABEL: define hidden spir_func void @fe2a(
// SPIRV-SAME: ) #[[ATTR0]] {
// SPIRV-NEXT: [[ENTRY:.*:]]
// SPIRV-NEXT: ret void
-// AMDGCN-LABEL: define hidden void @fe2a(
-// AMDGCN-SAME: ) #[[ATTR0]] {
-// AMDGCN-NEXT: [[ENTRY:.*:]]
-// AMDGCN-NEXT: ret void
+//
+// X86_64-LABEL: define hidden void @fe2a(
+// X86_64-SAME: ) #[[ATTR0]] {
+// X86_64-NEXT: [[ENTRY:.*:]]
+// X86_64-NEXT: ret void
//
void fe2a() {
__scoped_atomic_thread_fence(999, __MEMORY_SCOPE_SYSTEM);
}
+// AMDGCN-LABEL: define hidden void @fe2b(
+// AMDGCN-SAME: ) #[[ATTR0]] {
+// AMDGCN-NEXT: [[ENTRY:.*:]]
+// AMDGCN-NEXT: fence syncscope("one-as") release
+// AMDGCN-NEXT: ret void
//
// SPIRV-LABEL: define hidden spir_func void @fe2b(
// SPIRV-SAME: ) #[[ATTR0]] {
// SPIRV-NEXT: [[ENTRY:.*:]]
// SPIRV-NEXT: fence release
// SPIRV-NEXT: ret void
-// AMDGCN-LABEL: define hidden void @fe2b(
-// AMDGCN-SAME: ) #[[ATTR0]] {
-// AMDGCN-NEXT: [[ENTRY:.*:]]
-// AMDGCN-NEXT: fence syncscope("one-as") release
-// AMDGCN-NEXT: ret void
+//
+// X86_64-LABEL: define hidden void @fe2b(
+// X86_64-SAME: ) #[[ATTR0]] {
+// X86_64-NEXT: [[ENTRY:.*:]]
+// X86_64-NEXT: fence release
+// X86_64-NEXT: ret void
//
void fe2b() {
__scoped_atomic_thread_fence(__ATOMIC_RELEASE, 999);
>From e8896fdaa21a6b46a45222bd527829dad418dc7b Mon Sep 17 00:00:00 2001
From: Joseph Huber <hube...@outlook.com>
Date: Fri, 8 Nov 2024 17:05:13 -0600
Subject: [PATCH 3/4] comments
---
clang/lib/CodeGen/CGBuiltin.cpp | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index c8f90df2546f256..24893f6c20340e0 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -5213,9 +5213,8 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl
GD, unsigned BuiltinID,
llvm::BasicBlock *ContBB = createBasicBlock("atomic.scope.continue",
CurFn);
llvm::DenseMap<llvm::BasicBlock *, llvm::AtomicOrdering> OrderBBs;
- if (isa<llvm::ConstantInt>(Order)) {
- int Ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
- switch (Ord) {
+ if (auto Ord = dyn_cast<llvm::ConstantInt>(Order)) {
+ switch (Ord->getZExtValue()) {
case 0: // memory_order_relaxed
default: // invalid order
ContBB->eraseFromParent();
@@ -5237,11 +5236,10 @@ RValue CodeGenFunction::EmitBuiltinExpr(const
GlobalDecl GD, unsigned BuiltinID,
break;
}
} else {
- llvm::BasicBlock *AcquireBB, *ReleaseBB, *AcqRelBB, *SeqCstBB;
- AcquireBB = createBasicBlock("acquire", CurFn);
- ReleaseBB = createBasicBlock("release", CurFn);
- AcqRelBB = createBasicBlock("acqrel", CurFn);
- SeqCstBB = createBasicBlock("seqcst", CurFn);
+ llvm::BasicBlock *AcquireBB = createBasicBlock("acquire", CurFn);
+ llvm::BasicBlock *ReleaseBB = createBasicBlock("release", CurFn);
+ llvm::BasicBlock *AcqRelBB = createBasicBlock("acqrel", CurFn);
+ llvm::BasicBlock *SeqCstBB = createBasicBlock("seqcst", CurFn);
Order = Builder.CreateIntCast(Order, Builder.getInt32Ty(), false);
llvm::SwitchInst *SI = Builder.CreateSwitch(Order, ContBB);
@@ -5259,10 +5257,9 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl
GD, unsigned BuiltinID,
for (auto &[OrderBB, Ordering] : OrderBBs) {
Builder.SetInsertPoint(OrderBB);
- if (isa<llvm::ConstantInt>(Scope)) {
- int Scp = cast<llvm::ConstantInt>(Scope)->getZExtValue();
- SyncScope SS = ScopeModel->isValid(Scp)
- ? ScopeModel->map(Scp)
+ if (auto Scp = dyn_cast<llvm::ConstantInt>(Scope)) {
+ SyncScope SS = ScopeModel->isValid(Scp->getZExtValue())
+ ? ScopeModel->map(Scp->getZExtValue())
: ScopeModel->map(ScopeModel->getFallBackValue());
Builder.CreateFence(Ordering,
getTargetHooks().getLLVMSyncScopeID(
>From 5b14ae0b1861a058d083c8a6dde2f7b83c791996 Mon Sep 17 00:00:00 2001
From: Joseph Huber <hube...@outlook.com>
Date: Mon, 11 Nov 2024 17:30:41 -0600
Subject: [PATCH 4/4] Comments
---
clang/lib/CodeGen/CGBuiltin.cpp | 36 +++++++++++++++++----------------
1 file changed, 19 insertions(+), 17 deletions(-)
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 24893f6c20340e0..01e76ffeb1d24a1 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -5167,13 +5167,12 @@ RValue CodeGenFunction::EmitBuiltinExpr(const
GlobalDecl GD, unsigned BuiltinID,
Value *Order = EmitScalarExpr(E->getArg(0));
Value *Scope = EmitScalarExpr(E->getArg(1));
- if (isa<llvm::ConstantInt>(Order) && isa<llvm::ConstantInt>(Scope)) {
- int Ord = cast<llvm::ConstantInt>(Order)->getZExtValue();
- int Scp = cast<llvm::ConstantInt>(Scope)->getZExtValue();
- SyncScope SS = ScopeModel->isValid(Scp)
- ? ScopeModel->map(Scp)
+ if (auto Ord = dyn_cast<llvm::ConstantInt>(Order);
+ auto Scp = dyn_cast<llvm::ConstantInt>(Scope)) {
+ SyncScope SS = ScopeModel->isValid(Scp->getZExtValue())
+ ? ScopeModel->map(Scp->getZExtValue())
: ScopeModel->map(ScopeModel->getFallBackValue());
- switch (Ord) {
+ switch (Ord->getZExtValue()) {
case 0: // memory_order_relaxed
default: // invalid order
break;
@@ -5212,7 +5211,7 @@ RValue CodeGenFunction::EmitBuiltinExpr(const GlobalDecl
GD, unsigned BuiltinID,
llvm::BasicBlock *ContBB = createBasicBlock("atomic.scope.continue",
CurFn);
- llvm::DenseMap<llvm::BasicBlock *, llvm::AtomicOrdering> OrderBBs;
+ llvm::SmallVector<std::pair<llvm::BasicBlock *, llvm::AtomicOrdering>>
OrderBBs;
if (auto Ord = dyn_cast<llvm::ConstantInt>(Order)) {
switch (Ord->getZExtValue()) {
case 0: // memory_order_relaxed
@@ -5221,18 +5220,20 @@ RValue CodeGenFunction::EmitBuiltinExpr(const
GlobalDecl GD, unsigned BuiltinID,
return RValue::get(nullptr);
case 1: // memory_order_consume
case 2: // memory_order_acquire
- OrderBBs[Builder.GetInsertBlock()] = llvm::AtomicOrdering::Acquire;
+ OrderBBs.emplace_back(Builder.GetInsertBlock(),
+ llvm::AtomicOrdering::Acquire);
break;
case 3: // memory_order_release
- OrderBBs[Builder.GetInsertBlock()] = llvm::AtomicOrdering::Release;
+ OrderBBs.emplace_back(Builder.GetInsertBlock(),
+ llvm::AtomicOrdering::Release);
break;
case 4: // memory_order_acq_rel
- OrderBBs[Builder.GetInsertBlock()] =
- llvm::AtomicOrdering::AcquireRelease;
+ OrderBBs.emplace_back(Builder.GetInsertBlock(),
+ llvm::AtomicOrdering::AcquireRelease);
break;
case 5: // memory_order_seq_cst
- OrderBBs[Builder.GetInsertBlock()] =
- llvm::AtomicOrdering::SequentiallyConsistent;
+ OrderBBs.emplace_back(Builder.GetInsertBlock(),
+ llvm::AtomicOrdering::SequentiallyConsistent);
break;
}
} else {
@@ -5249,10 +5250,11 @@ RValue CodeGenFunction::EmitBuiltinExpr(const
GlobalDecl GD, unsigned BuiltinID,
SI->addCase(Builder.getInt32(4), AcqRelBB);
SI->addCase(Builder.getInt32(5), SeqCstBB);
- OrderBBs[AcquireBB] = llvm::AtomicOrdering::Acquire;
- OrderBBs[ReleaseBB] = llvm::AtomicOrdering::Release;
- OrderBBs[AcqRelBB] = llvm::AtomicOrdering::AcquireRelease;
- OrderBBs[SeqCstBB] = llvm::AtomicOrdering::SequentiallyConsistent;
+ OrderBBs.emplace_back(AcquireBB, llvm::AtomicOrdering::Acquire);
+ OrderBBs.emplace_back(ReleaseBB, llvm::AtomicOrdering::Release);
+ OrderBBs.emplace_back(AcqRelBB, llvm::AtomicOrdering::AcquireRelease);
+ OrderBBs.emplace_back(SeqCstBB,
+ llvm::AtomicOrdering::SequentiallyConsistent);
}
for (auto &[OrderBB, Ordering] : OrderBBs) {
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