[clang] [OpenACC] Implement firstprivate lowering except init. (PR #153847)

[Andy Kaylor via cfe-commits]

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@@ -0,0 +1,571 @@
+// RUN: %clang_cc1 -fopenacc -triple x86_64-linux-gnu -Wno-openacc-self-if-potential-conflict -emit-cir -fclangir -triple x86_64-linux-pc %s -o - | FileCheck %s
+
+struct NoCopyConstruct {};
+
+struct CopyConstruct {
+  CopyConstruct() = default;
+  CopyConstruct(const CopyConstruct&);
+};
+
+struct NonDefaultCtor {
+  NonDefaultCtor();
+};
+
+struct HasDtor {
+  ~HasDtor();
+};
+
+// CHECK: acc.firstprivate.recipe @firstprivatization__ZTSA5_7HasDtor : !cir.ptr<!cir.array<!rec_HasDtor x 5>> init {
+// CHECK-NEXT: ^bb0(%[[ARG:.*]]: !cir.ptr<!cir.array<!rec_HasDtor x 5>> {{.*}}):
+// CHECK-NEXT: cir.alloca !cir.array<!rec_HasDtor x 5>, !cir.ptr<!cir.array<!rec_HasDtor x 5>>, ["openacc.private.init"]
+// CHECK-NEXT: acc.yield
+// CHECK-NEXT: } copy {
+// CHECK-NEXT: ^bb0(%[[ARG_FROM:.*]]: !cir.ptr<!cir.array<!rec_HasDtor x 5>> {{.*}}, %[[ARG_TO:.*]]: !cir.ptr<!cir.array<!rec_HasDtor x 5>> {{.*}}):
+//
+// CHECK-NEXT: acc.yield
+//
+// CHECK-NEXT: } destroy {
+// CHECK-NEXT: ^bb0(%[[ARG:.*]]: !cir.ptr<!cir.array<!rec_HasDtor x 5>> {{.*}}):
+// CHECK-NEXT: %[[LAST_IDX:.*]] = cir.const #cir.int<4> : !u64i
+// CHECK-NEXT: %[[ARRPTR:.*]] = cir.cast(array_to_ptrdecay, %[[ARG]] : !cir.ptr<!cir.array<!rec_HasDtor x 5>>), !cir.ptr<!rec_HasDtor>
+// CHECK-NEXT: %[[ELEM:.*]] = cir.ptr_stride(%[[ARRPTR]] : !cir.ptr<!rec_HasDtor>, %[[LAST_IDX]] : !u64i), !cir.ptr<!rec_HasDtor>
+// CHECK-NEXT: %[[ITR:.*]] = cir.alloca !cir.ptr<!rec_HasDtor>, !cir.ptr<!cir.ptr<!rec_HasDtor>>, ["__array_idx"]
+// CHECK-NEXT: cir.store %[[ELEM]], %[[ITR]] : !cir.ptr<!rec_HasDtor>, !cir.ptr<!cir.ptr<!rec_HasDtor>>
+// CHECK-NEXT: cir.do {
+// CHECK-NEXT: %[[ELEM_LOAD:.*]] = cir.load %[[ITR]] : !cir.ptr<!cir.ptr<!rec_HasDtor>>, !cir.ptr<!rec_HasDtor>
+// CHECK-NEXT: cir.call @_ZN7HasDtorD1Ev(%[[ELEM_LOAD]]) nothrow : (!cir.ptr<!rec_HasDtor>) -> ()
+// CHECK-NEXT: %[[NEG_ONE:.*]] =  cir.const #cir.int<-1> : !s64i
+// CHECK-NEXT: %[[PREVELEM:.*]] = cir.ptr_stride(%[[ELEM_LOAD]] : !cir.ptr<!rec_HasDtor>, %[[NEG_ONE]] : !s64i), !cir.ptr<!rec_HasDtor>
+// CHECK-NEXT: cir.store %[[PREVELEM]], %[[ITR]] : !cir.ptr<!rec_HasDtor>, !cir.ptr<!cir.ptr<!rec_HasDtor>>
+// CHECK-NEXT: cir.yield
+// CHECK-NEXT: } while {
+// CHECK-NEXT: %[[ELEM_LOAD:.*]] = cir.load %[[ITR]] : !cir.ptr<!cir.ptr<!rec_HasDtor>>, !cir.ptr<!rec_HasDtor>
+// CHECK-NEXT: %[[CMP:.*]] = cir.cmp(ne, %[[ELEM_LOAD]], %[[ARRPTR]]) : !cir.ptr<!rec_HasDtor>, !cir.bool
+// CHECK-NEXT: cir.condition(%[[CMP]])
+// CHECK-NEXT: }
+// CHECK-NEXT: acc.yield
+// CHECK-NEXT: }
+//
+// CHECK-NEXT: acc.firstprivate.recipe @firstprivatization__ZTSA5_14NonDefaultCtor : !cir.ptr<!cir.array<!rec_NonDefaultCtor x 5>> init {
+// CHECK-NEXT: ^bb0(%[[ARG:.*]]: !cir.ptr<!cir.array<!rec_NonDefaultCtor x 5>> {{.*}}):
+// CHECK-NEXT: %[[ALLOCA:.*]] = cir.alloca !cir.array<!rec_NonDefaultCtor x 5>, !cir.ptr<!cir.array<!rec_NonDefaultCtor x 5>>, ["openacc.private.init"]
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andykaylor wrote:

Random question that's not necessarily related to the changes in this PR... Will address spaces be entirely handled in the CIR codegen (when we get to that), or will something need to be done in the OpenACC handling too?

https://github.com/llvm/llvm-project/pull/153847