From fd45fa1503de725801be3db33c7e860298fc82a3 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Fri, 17 Aug 2012 23:24:29 +0000
Subject: Make atomic load and store of pointers work.  Tighten verification of
 atomic operations so other unexpected operations don't slip through.  Based
 on patch by Logan Chien. PR11786/PR13186.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162146 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/CodeGen/X86/atomic-pointer.ll | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/CodeGen/X86/atomic-pointer.ll

(limited to 'test/CodeGen/X86/atomic-pointer.ll')

diff --git a/test/CodeGen/X86/atomic-pointer.ll b/test/CodeGen/X86/atomic-pointer.ll
new file mode 100644
index 0000000..a455277
--- /dev/null
+++ b/test/CodeGen/X86/atomic-pointer.ll
@@ -0,0 +1,22 @@
+; RUN: llc < %s -mtriple=i686-none-linux | FileCheck %s
+
+define i32* @test_atomic_ptr_load(i32** %a0) {
+; CHECK: test_atomic_ptr_load
+; CHECK: movl
+; CHECK: movl
+; CHECK: ret
+0:
+  %0 = load atomic i32** %a0 seq_cst, align 4
+  ret i32* %0
+}
+
+define void @test_atomic_ptr_store(i32* %a0, i32** %a1) {
+; CHECK: test_atomic_ptr_store
+; CHECK: movl
+; CHECK: movl
+; CHECK: xchgl
+; CHECK: ret
+0:
+  store atomic i32* %a0, i32** %a1 seq_cst, align 4
+  ret void
+}
-- 
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