[CIR] Adds support for __sync_lock_release (#1983)

Adds support for the __sync_lock_release builtin.

Signed-off-by: vishruth-thimmaiah <vishruththimmaiah@gmail.com>

Author: vishruth-thimmaiah

clang/lib/CIR/CodeGen/CIRGenBuiltin.cpp

@@ -2132,8 +2132,19 @@ RValue CIRGenFunction::emitBuiltinExpr(const GlobalDecl GD, unsigned BuiltinID,
   case Builtin::BI__sync_lock_release_2:
   case Builtin::BI__sync_lock_release_4:
   case Builtin::BI__sync_lock_release_8:
-  case Builtin::BI__sync_lock_release_16:
-    llvm_unreachable("BI__sync_lock_release_1 like NYI");
+  case Builtin::BI__sync_lock_release_16: {
+    Address ptr = checkAtomicAlignment(*this, E);
+    QualType elTy = E->getArg(0)->getType()->getPointeeType();
+
+    auto iTy =
+        cir::IntType::get(&getMLIRContext(), getContext().getTypeSize(elTy),
+                          elTy->isSignedIntegerType());
+    auto store = builder.createStore(
+        getLoc(E->getSourceRange()),
+        builder.getNullValue(iTy, getLoc(E->getBeginLoc())), ptr);
+    store.setAtomic(cir::MemOrder::Release);
+    return RValue::get(nullptr);
+  }
 
   case Builtin::BI__sync_synchronize:
     llvm_unreachable("BI__sync_synchronize NYI");

clang/test/CIR/CodeGen/atomic.cpp

@@ -1367,3 +1367,99 @@ void swap(unsigned short* a, short b) {
 void swap(unsigned char* a, char b) {
   unsigned char c = __sync_swap(a, b);
 }
+
+// CHECK-LABEL: @_Z12lock_releasePi
+// CHECK: cir.store align(4) atomic(release) {{.*}}, {{.*}} : !s32i, !cir.ptr<!s32i>
+
+// LLVM-LABEL: @_Z12lock_releasePi
+// LLVM: store atomic i32 0, ptr {{.*}} release, align 4
+
+// OGCG-LABEL: @_Z12lock_releasePi
+// OGCG: store atomic i32 0, ptr {{.*}} release, align 4
+void lock_release(int* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePl
+// CHECK: cir.store align(8) atomic(release) {{.*}}, {{.*}} : !s64i, !cir.ptr<!s64i>
+
+// LLVM-LABEL: @_Z12lock_releasePl
+// LLVM: store atomic i64 0, ptr {{.*}} release, align 8
+
+// OGCG-LABEL: @_Z12lock_releasePl
+// OGCG: store atomic i64 0, ptr {{.*}} release, align 8
+void lock_release(long* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePs
+// CHECK: cir.store align(2) atomic(release) {{.*}}, {{.*}} : !s16i, !cir.ptr<!s16i>
+
+// LLVM-LABEL: @_Z12lock_releasePs
+// LLVM: store atomic i16 0, ptr {{.*}} release, align 2
+
+// OGCG-LABEL: @_Z12lock_releasePs
+// OGCG: store atomic i16 0, ptr {{.*}} release, align 2
+void lock_release(short* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePc
+// CHECK: cir.store align(1) atomic(release) {{.*}}, {{.*}} : !s8i, !cir.ptr<!s8i>
+
+// LLVM-LABEL: @_Z12lock_releasePc
+// LLVM: store atomic i8 0, ptr {{.*}} release, align 1
+
+// OGCG-LABEL: @_Z12lock_releasePc
+// OGCG: store atomic i8 0, ptr {{.*}} release, align 1
+void lock_release(char* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePj
+// CHECK: cir.store align(4) atomic(release) {{.*}}, {{.*}} : !u32i, !cir.ptr<!u32i>
+
+// LLVM-LABEL: @_Z12lock_releasePj
+// LLVM: store atomic i32 0, ptr {{.*}} release, align 4
+
+// OGCG-LABEL: @_Z12lock_releasePj
+// OGCG: store atomic i32 0, ptr {{.*}} release, align 4
+void lock_release(unsigned int* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePm
+// CHECK: cir.store align(8) atomic(release) {{.*}}, {{.*}} : !u64i, !cir.ptr<!u64i>
+
+// LLVM-LABEL: @_Z12lock_releasePm
+// LLVM: store atomic i64 0, ptr {{.*}} release, align 8
+
+// OGCG-LABEL: @_Z12lock_releasePm
+// OGCG: store atomic i64 0, ptr {{.*}} release, align 8
+void lock_release(unsigned long* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePt
+// CHECK: cir.store align(2) atomic(release) {{.*}}, {{.*}} : !u16i, !cir.ptr<!u16i>
+
+// LLVM-LABEL: @_Z12lock_releasePt
+// LLVM: store atomic i16 0, ptr {{.*}} release, align 2
+
+// OGCG-LABEL: @_Z12lock_releasePt
+// OGCG: store atomic i16 0, ptr {{.*}} release, align 2
+void lock_release(unsigned short* a) {
+  __sync_lock_release(a);
+}
+
+// CHECK-LABEL: @_Z12lock_releasePh
+// CHECK: cir.store align(1) atomic(release) {{.*}}, {{.*}} : !u8i, !cir.ptr<!u8i>
+
+// LLVM-LABEL: @_Z12lock_releasePh
+// LLVM: store atomic i8 0, ptr {{.*}} release, align 1
+
+// OGCG-LABEL: @_Z12lock_releasePh
+// OGCG: store atomic i8 0, ptr {{.*}} release, align 1
+void lock_release(unsigned char* a) {
+  __sync_lock_release(a);
+}