[SYCL][Test] Improve intel-fpga-loops test (#1034)

* Removed redundant functions
* Renamed FileCheck labels to avoid alphabetical changes in future

Signed-off-by: Viktoria Maksimova <[email protected]>

Author: vmaksimo

clang/test/CodeGenSYCL/intel-fpga-loops.cpp

@@ -1,55 +1,35 @@
 // RUN: %clang_cc1 -triple spir64-unknown-unknown-sycldevice -disable-llvm-passes -fsycl-is-device -emit-llvm %s -o - | FileCheck %s
 
-// CHECK: br label %for.cond, !llvm.loop ![[MD_A:[0-9]+]]
-// CHECK: br label %for.cond, !llvm.loop ![[MD_B:[0-9]+]]
-// CHECK: br label %for.cond, !llvm.loop ![[MD_C:[0-9]+]]
-// CHECK: br label %for.cond2, !llvm.loop ![[MD_D:[0-9]+]]
-// CHECK: br label %for.cond,  !llvm.loop ![[MD_E:[0-9]+]]
-// CHECK: br label %for.cond2, !llvm.loop ![[MD_F:[0-9]+]]
+// CHECK: br label %for.cond,  !llvm.loop ![[MD_II:[0-9]+]]
+// CHECK: br label %for.cond2, !llvm.loop ![[MD_II_2:[0-9]+]]
+// CHECK: br label %for.cond,  !llvm.loop ![[MD_MC:[0-9]+]]
+// CHECK: br label %for.cond2, !llvm.loop ![[MD_MC_2:[0-9]+]]
 
-// CHECK: ![[MD_A]] = distinct !{![[MD_A]], ![[MD_ii:[0-9]+]]}
-// CHECK-NEXT: ![[MD_ii]] = !{!"llvm.loop.ii.count", i32 2}
-void goo() {
-  int a[10];
-  [[intelfpga::ii(2)]]
-  for (int i = 0; i != 10; ++i)
-    a[i] = 0;
-}
-
-// CHECK: ![[MD_B]] = distinct !{![[MD_B]], ![[MD_max_concurrency:[0-9]+]]}
-// CHECK-NEXT: ![[MD_max_concurrency]] = !{!"llvm.loop.max_concurrency.count", i32 2}
-void zoo() {
-  int a[10];
-  [[intelfpga::max_concurrency(2)]]
-  for (int i = 0; i != 10; ++i)
-    a[i] = 0;
-}
-
-// CHECK: ![[MD_C]] = distinct !{![[MD_C]], ![[MD_ii_2:[0-9]+]]}
-// CHECK-NEXT: ![[MD_ii_2]] = !{!"llvm.loop.ii.count", i32 4}
 template <int A>
-void boo() {
+void ii() {
   int a[10];
+  // CHECK: ![[MD_II]] = distinct !{![[MD_II]], ![[MD_ii_count:[0-9]+]]}
+  // CHECK-NEXT: ![[MD_ii_count]] = !{!"llvm.loop.ii.count", i32 4}
   [[intelfpga::ii(A)]]
   for (int i = 0; i != 10; ++i)
     a[i] = 0;
-  // CHECK: ![[MD_D]] = distinct !{![[MD_D]], ![[MD_ii_3:[0-9]+]]}
-  // CHECK-NEXT: ![[MD_ii_3]] = !{!"llvm.loop.ii.count", i32 8}
+  // CHECK: ![[MD_II_2]] = distinct !{![[MD_II_2]], ![[MD_ii_count_2:[0-9]+]]}
+  // CHECK-NEXT: ![[MD_ii_count_2]] = !{!"llvm.loop.ii.count", i32 8}
   [[intelfpga::ii(8)]]
   for (int i = 0; i != 10; ++i)
     a[i] = 0;
 }
 
-// CHECK: ![[MD_E]] = distinct !{![[MD_E]], ![[MD_max_concurrency_2:[0-9]+]]}
-// CHECK-NEXT: ![[MD_max_concurrency_2]] = !{!"llvm.loop.max_concurrency.count", i32 0}
-template <int B>
-void foo() {
+template <int A>
+void max_concurrency() {
   int a[10];
-  [[intelfpga::max_concurrency(B)]]
+  // CHECK: ![[MD_MC]] = distinct !{![[MD_MC]], ![[MD_max_concurrency:[0-9]+]]}
+  // CHECK-NEXT: ![[MD_max_concurrency]] = !{!"llvm.loop.max_concurrency.count", i32 0}
+  [[intelfpga::max_concurrency(A)]]
   for (int i = 0; i != 10; ++i)
     a[i] = 0;
-  // CHECK: ![[MD_F]] = distinct !{![[MD_F]], ![[MD_max_concurrency_3:[0-9]+]]}
-  // CHECK-NEXT: ![[MD_max_concurrency_3]] = !{!"llvm.loop.max_concurrency.count", i32 4}
+  // CHECK: ![[MD_MC_2]] = distinct !{![[MD_MC_2]], ![[MD_max_concurrency_2:[0-9]+]]}
+  // CHECK-NEXT: ![[MD_max_concurrency_2]] = !{!"llvm.loop.max_concurrency.count", i32 4}
   [[intelfpga::max_concurrency(4)]]
   for (int i = 0; i != 10; ++i)
     a[i] = 0;
@@ -62,10 +42,8 @@ __attribute__((sycl_kernel)) void kernel_single_task(Func kernelFunc) {
 
 int main() {
   kernel_single_task<class kernel_function>([]() {
-    goo();
-    zoo();
-    boo<4>();
-    foo<0>();
+    ii<4>();
+    max_concurrency<0>();
   });
   return 0;
 }