+; RUN: llc < %s | FileCheck %s
+target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
+target triple = "i686-pc-windows-msvc18.0.0"
+
+%struct.T = type { i64, [3 x i32] }
+
+; Function Attrs: nounwind optsize
+define void @f(i8* %p, i8* %q, i32* inalloca nocapture %unused) #0 {
+entry:
+ %g = alloca %struct.T, align 8
+ %r = alloca i32, align 8
+ store i32 0, i32* %r, align 4
+ call void @llvm.memcpy.p0i8.p0i8.i32(i8* %p, i8* %q, i32 24, i32 8, i1 false)
+ br label %while.body
+
+while.body: ; preds = %while.body, %entry
+ %load = load i32, i32* %r, align 4
+ %dec = add nsw i32 %load, -1
+ store i32 %dec, i32* %r, align 4
+ call void @g(%struct.T* %g)
+ %tobool = icmp eq i32 %dec, 0
+ br i1 %tobool, label %while.end, label %while.body
+
+while.end: ; preds = %while.body
+ ret void
+}
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) #1
+
+declare void @g(%struct.T*)
+
+; CHECK-LABEL: _f:
+; CHECK: pushl %ebp
+; CHECK: movl %esp, %ebp
+; CHECK: andl $-8, %esp
+; CHECK-NOT: movl %esp, %esi
+; CHECK: rep;movsl
+; CHECK: leal 8(%esp), %esi
+
+; CHECK: decl (%esp)
+; CHECK: seto %al
+; CHECK: lahf
+; CHECK: movl %eax, %edi
+; CHECK: pushl %esi
+; CHECK: calll _g
+; CHECK: addl $4, %esp
+; CHECK: movl %edi, %eax
+; CHECK: addb $127, %al
+; CHECK: sahf
+
+attributes #0 = { nounwind optsize }
+attributes #1 = { argmemonly nounwind }