Update data layout for 32-bit msvc targets

https://reviews.llvm.org/D115942 changed the alignment of f80.

Author: nikic

compiler/rustc_codegen_llvm/src/context.rs

@@ -134,7 +134,8 @@ pub unsafe fn create_module<'ll>(
     let llmod = llvm::LLVMModuleCreateWithNameInContext(mod_name.as_ptr(), llcx);
 
     let mut target_data_layout = sess.target.data_layout.clone();
-    if llvm_util::get_version() < (13, 0, 0) {
+    let llvm_version = llvm_util::get_version();
+    if llvm_version < (13, 0, 0) {
         if sess.target.arch == "powerpc64" {
             target_data_layout = target_data_layout.replace("-S128", "");
         }
@@ -145,6 +146,15 @@ pub unsafe fn create_module<'ll>(
             target_data_layout = "e-m:e-p:64:64-i64:64-n32:64-S128".to_string();
         }
     }
+    if llvm_version < (14, 0, 0) {
+        if sess.target.llvm_target == "i686-pc-windows-msvc"
+            || sess.target.llvm_target == "i586-pc-windows-msvc"
+        {
+            target_data_layout =
+                "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:32-n8:16:32-a:0:32-S32"
+                    .to_string();
+        }
+    }
 
     // Ensure the data-layout values hardcoded remain the defaults.
     if sess.target.is_builtin {

compiler/rustc_target/src/spec/i686_pc_windows_msvc.rs

@@ -24,7 +24,7 @@ pub fn target() -> Target {
         llvm_target: "i686-pc-windows-msvc".to_string(),
         pointer_width: 32,
         data_layout: "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            i64:64-f80:32-n8:16:32-a:0:32-S32"
+            i64:64-f80:128-n8:16:32-a:0:32-S32"
             .to_string(),
         arch: "x86".to_string(),
         options: base,

compiler/rustc_target/src/spec/i686_uwp_windows_msvc.rs

@@ -9,7 +9,7 @@ pub fn target() -> Target {
         llvm_target: "i686-pc-windows-msvc".to_string(),
         pointer_width: 32,
         data_layout: "e-m:x-p:32:32-p270:32:32-p271:32:32-p272:64:64-\
-            i64:64-f80:32-n8:16:32-a:0:32-S32"
+            i64:64-f80:128-n8:16:32-a:0:32-S32"
             .to_string(),
         arch: "x86".to_string(),
         options: base,