From 01dba1c054724b4957778932fb5cd0df14d214b3 Mon Sep 17 00:00:00 2001
From: Veikka Tuominen <git@vexu.eu>
Date: Thu, 5 Jan 2023 13:38:14 +0200
Subject: Sema: add system for checking backend feature support

---
 src/Module.zig | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

(limited to 'src/Module.zig')

diff --git a/src/Module.zig b/src/Module.zig
index 9c7d3ee885..24047f8798 100644
--- a/src/Module.zig
+++ b/src/Module.zig
@@ -6749,3 +6749,25 @@ pub fn getDeclExports(mod: Module, decl_index: Decl.Index) []const *Export {
         return &[0]*Export{};
     }
 }
+
+pub const Feature = enum {
+    panic_fn,
+    panic_unwrap_error,
+    safety_check_formatted,
+    error_return_trace,
+    is_named_enum_value,
+    error_set_has_value,
+};
+
+pub fn backendSupportsFeature(mod: Module, feature: Feature) bool {
+    return switch (feature) {
+        .panic_fn => mod.comp.bin_file.options.target.ofmt == .c or
+            mod.comp.bin_file.options.use_llvm,
+        .panic_unwrap_error => mod.comp.bin_file.options.target.ofmt == .c or
+            mod.comp.bin_file.options.use_llvm,
+        .safety_check_formatted => mod.comp.bin_file.options.use_llvm,
+        .error_return_trace => mod.comp.bin_file.options.use_llvm,
+        .is_named_enum_value => mod.comp.bin_file.options.use_llvm,
+        .error_set_has_value => mod.comp.bin_file.options.use_llvm,
+    };
+}
-- 
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