From 3357c59cebacb6b60da865376b20d2b307d12ec1 Mon Sep 17 00:00:00 2001
From: Robin Voetter <robin@voetter.nl>
Date: Sat, 18 Mar 2023 15:59:56 +0100
Subject: new builtins: @workItemId, @workGroupId, @workGroupSize

* @workItemId returns the index of the work item in a work group for a
  dimension.
* @workGroupId returns the index of the work group in the kernel dispatch for a
  dimension.
* @workGroupSize returns the size of the work group for a dimension.

These builtins are mainly useful for GPU backends. They are currently only
implemented for the AMDGCN LLVM backend.
---
 src/codegen/c.zig | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/codegen/c.zig')

diff --git a/src/codegen/c.zig b/src/codegen/c.zig
index 6c4bb3c688..704a1e31c5 100644
--- a/src/codegen/c.zig
+++ b/src/codegen/c.zig
@@ -2995,6 +2995,11 @@ fn genBodyInner(f: *Function, body: []const Air.Inst.Index) error{ AnalysisFail,
             .c_va_arg => try airCVaArg(f, inst),
             .c_va_end => try airCVaEnd(f, inst),
             .c_va_copy => try airCVaCopy(f, inst),
+
+            .work_item_id,
+            .work_group_size,
+            .work_group_id,
+            => unreachable,
             // zig fmt: on
         };
         if (result_value == .new_local) {
-- 
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