use __chkstk_ms compiler-rt functions for __chkstk

I had to revert the target native features thing because there
is still some incorrect behavior with f128.

Reopens #508
partially reverts b5054625093ef22b3f228199b6fbf70e1c50b703

See #302

1 files changed, 10 insertions, 2 deletions

diff --git a/src/codegen.cpp b/src/codegen.cpp
index efcf6ea3e3..5889ba316a 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -5008,8 +5008,16 @@ static void init(CodeGen *g) {
     const char *target_specific_cpu_args;
     const char *target_specific_features;
     if (g->is_native_target) {
-        target_specific_cpu_args = ZigLLVMGetHostCPUName();
-        target_specific_features = ZigLLVMGetNativeFeatures();
+        // LLVM creates invalid binaries on Windows sometimes.
+        // See https://github.com/zig-lang/zig/issues/508
+        // As a workaround we do not use target native features on Windows.
+        if (g->zig_target.os == ZigLLVM_Win32) {
+            target_specific_cpu_args = "";
+            target_specific_features = "";
+        } else {
+            target_specific_cpu_args = ZigLLVMGetHostCPUName();
+            target_specific_features = ZigLLVMGetNativeFeatures();
+        }
     } else {
         target_specific_cpu_args = "";
         target_specific_features = "";