[OPENMP50]Do not mark the function as used if referenced only in declare

variant directive.

If the function is used only in declare variant directive as a variant
function, it should not be marked as used to prevent emission of the
target-specific functions. Build the reference in the unevaluated
context.

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/OpenMP/declare_variant_mixed_codegen.cpp b/clang/test/OpenMP/declare_variant_mixed_codegen.cpp
index dea42d1c217..0c13f5f2f12 100644
--- a/clang/test/OpenMP/declare_variant_mixed_codegen.cpp
+++ b/clang/test/OpenMP/declare_variant_mixed_codegen.cpp
@@ -27,6 +27,7 @@
 // CHECK-DAG: ret i32 85
 // CHECK-DAG: ret i32 86
 // CHECK-DAG: ret i32 87
+// CHECK-DAG: ret i32 88
 // CHECK-NOT: ret i32 {{1|4|81|84}}
 
 #ifndef HEADER
@@ -45,8 +46,10 @@ int test();
 #pragma omp declare variant(test) match(implementation = {vendor(llvm)}, device={kind(cpu)})
 int call() { return 1; }
 
+static int stat_unused_no_emit() { return 1; }
 static int stat_unused_();
 #pragma omp declare variant(stat_unused_) match(implementation = {vendor(llvm)}, device={kind(cpu)})
+#pragma omp declare variant(stat_unused_no_emit) match(implementation = {vendor(xxx)}, device={kind(gpu)})
 static int stat_unused() { return 1; }
 
 static int stat_used_();
@@ -134,4 +137,12 @@ int fn_variant2() { return 1; }
 #pragma omp declare variant(fn_variant2) match(implementation = {vendor(llvm)}, device={kind(fpga)})
 int fn2() { return 87; }
 
+#pragma omp declare variant(stat_unused_no_emit) match(implementation = {vendor(xxx)}, device={kind(gpu)})
+template <typename T>
+static T stat_unused_T() { return 88; }
+
+int bazzzzzzzz() {
+  return stat_unused_T<int>();
+}
+
 #endif // HEADER