Allow bit operators on enum types. (#3862)

* Allow bit operators on enum types.

* Fix.

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/language-feature/enums/enum-bit-ops.slang b/tests/language-feature/enums/enum-bit-ops.slang
new file mode 100644
index 000000000..abffe8dee
--- /dev/null
+++ b/tests/language-feature/enums/enum-bit-ops.slang
@@ -0,0 +1,32 @@
+//TEST(compute):COMPARE_COMPUTE(filecheck-buffer=CHECK): -shaderobj
+
+[Flags]
+enum MyFlags
+{
+    Zero = 0,
+    BitOne, // = 1
+    BitTwo, // = 2
+    BitThree // = 4
+}
+
+bool test(MyFlags f1)
+{
+    return (f1 & MyFlags.BitTwo) != 0;
+}
+
+//TEST_INPUT:ubuffer(data=[0 0 0 0], stride=4):out,name=outputBuffer
+RWStructuredBuffer<int> outputBuffer;
+
+[numthreads(1, 1, 1)]
+void computeMain(int3 dispatchThreadID: SV_DispatchThreadID)
+{
+    int outVal = test(MyFlags.BitOne | MyFlags.BitTwo) ? 1 : 0;
+    // CHECK: 1
+    outputBuffer[0] = outVal;
+    // CHECK: 4
+    outputBuffer[1] = (int)MyFlags.BitThree;
+    // CHECK: 0
+    outputBuffer[2] = test(MyFlags.BitOne | MyFlags.BitThree) ? 1 : 0;
+    // CHECK: 8
+    outputBuffer[3] = MyFlags(8);
+}