Rename and improve test

Add a second reduction of a by_val type, so that we can test
for the most recent bug found. Also, since the test is now
different, rename it.

This test is going all the way to LLVM-IR to ensure the whole
codegeneration works here.

Author: Leporacanthicus

flang/test/Lower/OpenMP/parallel-reduction-allocate.f90

@@ -0,0 +1,48 @@
+!! Make sure that mixture of by-ref and by-val reductions work all the way
+!! to LLVM-IR code.
+! RUN: %flang_fc1 -emit-llvm -fopenmp -o - %s 2>&1 | FileCheck %s
+subroutine proc
+  implicit none
+  real(8),allocatable :: F(:)
+  real(8),allocatable :: A(:)
+   
+  integer :: I
+
+!$omp parallel private(A) reduction(+:F,I)
+  allocate(A(10))
+!$omp end parallel
+end subroutine proc
+
+!CHECK-LABEL: define void @proc_()
+!CHECK: call void
+!CHECK-SAME: @__kmpc_fork_call(ptr {{.*}}, i32 1, ptr @[[OMP_PAR:.*]], {{.*}})
+
+!CHECK: define internal void @[[OMP_PAR]](ptr {{.*}} %[[TID_ADDR:.*]], ptr noalias 
+!CHECK:  %[[TID_LOCAL:.*]] = alloca i32
+!CHECK:  %[[TID:.*]] = load i32, ptr %[[TID_ADDR]]
+!CHECK:  store i32 %[[TID]], ptr %[[TID_LOCAL]]
+!CHECK:  %[[I_priv:.*]] = alloca i32
+!CHECK:  %[[F_priv:.*]] = alloca ptr
+
+!CHECK: omp.reduction.init:
+!CHECK: store ptr %{{.*}}, ptr %[[F_priv]]
+!CHECK: store i32 0, ptr %[[I_priv]]
+
+!CHECK: omp.par.region8:
+!CHECK-NEXT: call ptr @malloc
+!CHECK-SAME: i64 10
+
+!CHECK: %[[RED_ARR_0:.*]] = getelementptr inbounds [2 x ptr], ptr %red.array, i64 0, i64 0
+!CHECK: store ptr %[[F_priv]], ptr %[[RED_ARR_0:.*]]
+!CHECK: %[[RED_ARR_1:.*]] = getelementptr inbounds [2 x ptr], ptr %red.array, i64 0, i64 1
+!CHECK: store ptr %[[I_priv]], ptr %[[RED_ARR_1]]
+
+!CHECK: omp.par.pre_finalize:                             ; preds = %reduce.finalize
+!CHECK:  %{{.*}} = load ptr, ptr %[[F_priv]]
+!CHECK:  br label %omp.reduction.cleanup
+
+!CHECK: omp.reduction.cleanup:
+!CHECK:  br i1 %{{.*}}, label %[[OMP_FREE:.*]], label %{{.*}}
+
+!CHECK: [[OMP_FREE]]:
+!CHECK: call void @free