Failing test: reading a builtin with an entry-point param and a getter yields a compiler error.

Author: fluffysquirrels

tests/compiletests/ui/builtin/compute_duplicates.rs

@@ -0,0 +1,29 @@
+// build-pass
+// compile-flags: -C llvm-args=--disassemble
+// normalize-stderr-test "OpLine .*\n" -> ""
+// normalize-stderr-test "OpSource .*\n" -> ""
+// normalize-stderr-test "%\d+ = OpString .*\n" -> ""
+// normalize-stderr-test "OpCapability VulkanMemoryModel\n" -> ""
+// normalize-stderr-test "OpMemoryModel Logical Vulkan" -> "OpMemoryModel Logical Simple"
+// normalize-stderr-test "; .*\n" -> ""
+
+use spirv_std::{
+    builtin::compute,
+    glam::*,
+    spirv,
+};
+
+#[spirv(compute(threads(1)))]
+pub fn compute(
+    // TODO: Compile error: duplicate builtin
+    #[spirv(local_invocation_index)] local_idx: u32,
+) {
+    let _local_invocation_index: u32 = compute::local_invocation_index();
+    let _local_invocation_index: u32 = compute::local_invocation_index();
+    let _local_invocation_index: u32 = f();
+}
+
+#[inline(never)]
+fn f() -> u32 {
+    compute::local_invocation_index()
+}