CBE: support call attributes

 * Support always_tail and never_tail/never_inline with a comptime callee using clang
 * Support never_inline using gcc
 * Support never_inline using msvc

Unfortunately, can't enable behavior tests because of the conditional support.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/target.zig b/src/target.zig
index 001adad7c2..6d6933e9e7 100644
--- a/src/target.zig
+++ b/src/target.zig
@@ -723,6 +723,7 @@ pub fn supportsFunctionAlignment(target: std.Target) bool {
 pub fn supportsTailCall(target: std.Target, backend: std.builtin.CompilerBackend) bool {
     switch (backend) {
         .stage1, .stage2_llvm => return @import("codegen/llvm.zig").supportsTailCall(target),
+        .stage2_c => return true,
         else => return false,
     }
 }