Index: lib/CodeGen/TargetInfo.cpp
===================================================================
--- lib/CodeGen/TargetInfo.cpp
+++ lib/CodeGen/TargetInfo.cpp
@@ -2715,9 +2715,6 @@
     return ABIArgInfo::getDirect(llvm::IntegerType::get(getVMContext(), Size));
   }
 
-  if (Ty->isPromotableIntegerType())
-    return ABIArgInfo::getExtend();
-
   return ABIArgInfo::getDirect();
 }
 
Index: test/CodeGen/2007-06-18-SextAttrAggregate.c
===================================================================
--- test/CodeGen/2007-06-18-SextAttrAggregate.c
+++ test/CodeGen/2007-06-18-SextAttrAggregate.c
@@ -1,11 +1,13 @@
 // RUN: %clang_cc1 %s -o - -emit-llvm | FileCheck %s
-// XFAIL: aarch64, arm64
+// XFAIL: aarch64, arm64, x86_64-pc-win32
 
 // PR1513
 
 // AArch64 ABI actually requires the reverse of what this is testing: the callee
 // does any extensions and remaining bits are unspecified.
 
+// Win64 ABI does expect extensions for type smaller than 64bits.
+
 // Technically this test wasn't written to test that feature, but it's a
 // valuable check nevertheless.