--- /dev/null
+; RUN: llvm-reduce --abort-on-invalid-reduction --delta-passes=syncscopes --test FileCheck --test-arg --check-prefixes=INTERESTING,CHECK --test-arg %s --test-arg --input-file %s -o %t
+; RUN: FileCheck -check-prefixes=RESULT,CHECK %s < %t
+
+; CHECK-LABEL: @load_syncscope_keep(
+; INTERESTING: syncscope("agent")
+; RESULT: %op = load atomic i32, ptr %ptr syncscope("agent") seq_cst, align 4
+define i32 @load_syncscope_keep(ptr %ptr) {
+ %op = load atomic i32, ptr %ptr syncscope("agent") seq_cst, align 4
+ ret i32 %op
+}
+
+; CHECK-LABEL: @load_syncscope_drop(
+; INTERESTING: load atomic
+; RESULT: %op = load atomic i32, ptr %ptr seq_cst, align 4
+define i32 @load_syncscope_drop(ptr %ptr) {
+ %op = load atomic i32, ptr %ptr syncscope("agent") seq_cst, align 4
+ ret i32 %op
+}
+
+; CHECK-LABEL: @store_syncscope_keep(
+; INTERESTING: syncscope("agent")
+; RESULT: store atomic i32 0, ptr %ptr syncscope("agent") seq_cst, align 4
+define void @store_syncscope_keep(ptr %ptr) {
+ store atomic i32 0, ptr %ptr syncscope("agent") seq_cst, align 4
+ ret void
+}
+
+; CHECK-LABEL: @store_syncscope_drop(
+; INTERESTING: store
+; RESULT: store atomic i32 0, ptr %ptr seq_cst, align 4
+define void @store_syncscope_drop(ptr %ptr) {
+ store atomic i32 0, ptr %ptr syncscope("agent") seq_cst, align 4
+ ret void
+}
+
+; CHECK-LABEL: @atomicrmw_syncscope_keep(
+; INTERESTING: syncscope("agent")
+; RESULT: %val = atomicrmw add ptr %ptr, i32 3 syncscope("agent") seq_cst, align 4
+define i32 @atomicrmw_syncscope_keep(ptr %ptr) {
+ %val = atomicrmw add ptr %ptr, i32 3 syncscope("agent") seq_cst, align 4
+ ret i32 %val
+}
+
+; CHECK-LABEL: @atomicrmw_syncscope_drop(
+; INTERESTING: atomicrmw
+; RESULT: %val = atomicrmw add ptr %ptr, i32 3 seq_cst, align 4
+define i32 @atomicrmw_syncscope_drop(ptr %ptr) {
+ %val = atomicrmw add ptr %ptr, i32 3 seq_cst
+ ret i32 %val
+}
+
+; CHECK-LABEL: @cmpxchg_syncscope_keep(
+; INTERESTING: syncscope("agent")
+; RESULT: %val = cmpxchg ptr %ptr, i32 %old, i32 %in syncscope("agent") seq_cst seq_cst, align 4
+define { i32, i1 } @cmpxchg_syncscope_keep(ptr %ptr, i32 %old, i32 %in) {
+ %val = cmpxchg ptr %ptr, i32 %old, i32 %in syncscope("agent") seq_cst seq_cst
+ ret { i32, i1 } %val
+}
+
+; CHECK-LABEL: @cmpxchg_syncscope_drop(
+; INTERESTING: = cmpxchg ptr
+; RESULT: %val = cmpxchg ptr %ptr, i32 %old, i32 %in seq_cst seq_cst, align 4
+define { i32, i1 } @cmpxchg_syncscope_drop(ptr %ptr, i32 %old, i32 %in) {
+ %val = cmpxchg ptr %ptr, i32 %old, i32 %in syncscope("agent") seq_cst seq_cst
+ ret { i32, i1 } %val
+}
+
+; CHECK-LABEL: @fence_syncscope_keep(
+; INTERESTING: syncscope("agent")
+; RESULT: fence syncscope("agent") acquire
+define void @fence_syncscope_keep() {
+ fence syncscope("agent") acquire
+ ret void
+}
+
+; CHECK-LABEL: @fence_syncscope_drop(
+; INTERESTING: fence
+; RESULT: fence acquire
+define void @fence_syncscope_drop() {
+ fence syncscope("agent") acquire
+ ret void
+}
void llvm::reduceVolatileInstructionsDeltaPass(TestRunner &Test) {
runDeltaPass(Test, removeVolatileInModule, "Reducing Volatile Instructions");
}
+
+static void reduceAtomicSyncScopesInFunction(Oracle &O, Function &F) {
+ for (Instruction &I : instructions(F)) {
+ if (LoadInst *LI = dyn_cast<LoadInst>(&I)) {
+ if (LI->getSyncScopeID() != SyncScope::System && !O.shouldKeep())
+ LI->setSyncScopeID(SyncScope::System);
+ } else if (StoreInst *SI = dyn_cast<StoreInst>(&I)) {
+ if (SI->getSyncScopeID() != SyncScope::System && !O.shouldKeep())
+ SI->setSyncScopeID(SyncScope::System);
+ } else if (AtomicRMWInst *RMW = dyn_cast<AtomicRMWInst>(&I)) {
+ if (RMW->getSyncScopeID() != SyncScope::System && !O.shouldKeep())
+ RMW->setSyncScopeID(SyncScope::System);
+ } else if (AtomicCmpXchgInst *CmpXChg = dyn_cast<AtomicCmpXchgInst>(&I)) {
+ if (CmpXChg->getSyncScopeID() != SyncScope::System && !O.shouldKeep())
+ CmpXChg->setSyncScopeID(SyncScope::System);
+ } else if (FenceInst *Fence = dyn_cast<FenceInst>(&I)) {
+ if (Fence->getSyncScopeID() != SyncScope::System && !O.shouldKeep())
+ Fence->setSyncScopeID(SyncScope::System);
+ }
+ }
+}
+
+static void reduceAtomicSyncScopesInModule(Oracle &O, Module &Mod) {
+ for (Function &F : Mod)
+ reduceAtomicSyncScopesInFunction(O, F);
+}
+
+void llvm::reduceAtomicSyncScopesDeltaPass(TestRunner &Test) {
+ runDeltaPass(Test, reduceAtomicSyncScopesInModule,
+ "Reducing Atomic Sync Scopes");
+}