From 5949851074597dbc315476237f42fa67a0b6770a Mon Sep 17 00:00:00 2001
From: kcbanner <kcbanner@gmail.com>
Date: Thu, 19 Jan 2023 00:37:20 -0500
Subject: llvm: pass non-scalars as byref in .Stdcall

- add c_abi tests for .Stdcall
- enable (x86|x86_64)-windows-gnu in the c_abi tests
---
 src/codegen/llvm.zig | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

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

diff --git a/src/codegen/llvm.zig b/src/codegen/llvm.zig
index 8604c7d7f6..178c0aaf0a 100644
--- a/src/codegen/llvm.zig
+++ b/src/codegen/llvm.zig
@@ -10798,6 +10798,22 @@ const ParamTypeIterator = struct {
                     },
                 }
             },
+            .Stdcall => {
+                it.zig_index += 1;
+                it.llvm_index += 1;
+
+                if (it.target.cpu.arch != .x86 or it.target.os.tag != .windows) {
+                    return .byval;
+                }
+
+                const is_scalar = isScalar(ty);
+                if (is_scalar) {
+                    return .byval;
+                } else {
+                    it.byval_attr = true;
+                    return .byref;
+                }
+            },
             else => {
                 it.zig_index += 1;
                 it.llvm_index += 1;
-- 
cgit v1.2.3