Add testcase for r81322 (PR4933).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81327 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/bss_pagealigned.ll b/test/CodeGen/X86/bss_pagealigned.ll
new file mode 100644 (file)
index 0000000..4a1049b
--- /dev/null
+++ b/test/CodeGen/X86/bss_pagealigned.ll
@@ -0,0 +1,21 @@
+; RUN: llc --code-model=kernel -march=x86-64 <%s | FileCheck %s
+; PR4933
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-unknown-linux-gnu"
+%struct.kmem_cache_order_objects = type { i64 }
+declare i8* @memset(i8*, i32, i64)
+define void @unxlate_dev_mem_ptr(i64 %phis, i8* %addr) nounwind {
+  %pte.addr.i = alloca %struct.kmem_cache_order_objects*
+  %call8 = call i8* @memset(i8* bitcast ([512 x %struct.kmem_cache_order_objects]* @bm_pte to i8*), i32 0, i64 4096)
+; CHECK: movq    $bm_pte, %rdi
+; CHECK-NEXT: xorl    %esi, %esi
+; CHECK-NEXT: movl    $4096, %edx
+; CHECK-NEXT: call    memset
+  ret void
+}
+@bm_pte = internal global [512 x %struct.kmem_cache_order_objects] zeroinitializer, section ".bss.page_aligned", align 4096
+; CHECK: .section        .bss.page_aligned,"aw",@nobits
+; CHECK-NEXT: .align  4096
+; CHECK-NEXT: bm_pte:
+; CHECK-NEXT: .zero   4096
+; CHECK-NEXT: .size   bm_pte, 4096