Upstream test for wide character literals.

Reviewed By: vdonaldson

Differential Revision: https://reviews.llvm.org/D124488

flang/test/Fir/widechar.fir

@@ -0,0 +1,22 @@
+// RUN: tco %s | FileCheck %s
+
+// CHECK-LABEL: @character_literal1
+func @character_literal1() -> !fir.char<1,13> {
+  %0 = fir.string_lit "Hello, World!"(13) : !fir.char<1,13>
+  // CHECK: ret [13 x i8] c"Hello, World!"
+  return %0 : !fir.char<1,13>
+}
+
+// CHECK-LABEL: @character_literal2
+func @character_literal2() -> !fir.char<2,2> {
+  %0 = fir.string_lit [234, 456](2) : !fir.char<2,2>
+  // CHECK: ret [2 x i16] [i16 234, i16 456]
+  return %0 : !fir.char<2,2>
+}
+
+// CHECK-LABEL: @character_literal4
+func @character_literal4() -> !fir.char<4,3> {
+  %0 = fir.string_lit [89123, 999256, 4](3) : !fir.char<4,3>
+  // CHECK: ret [3 x i32] [i32 89123, i32 999256, i32 4]
+  return %0 : !fir.char<4,3>
+}