From df14b3a8377fd020857ea6301d572d76c5a21221 Mon Sep 17 00:00:00 2001
From: Eli Friedman <eli.friedman@gmail.com>
Date: Tue, 11 Oct 2011 02:20:01 +0000
Subject: Initial implementation of __atomic_* (everything except
 __atomic_is_lock_free).

llvm-svn: 141632
---
 clang/test/CodeGen/atomic-ops.c | 79 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 clang/test/CodeGen/atomic-ops.c

(limited to 'clang/test/CodeGen')

diff --git a/clang/test/CodeGen/atomic-ops.c b/clang/test/CodeGen/atomic-ops.c
new file mode 100644
index 00000000000..cb3a868b808
--- /dev/null
+++ b/clang/test/CodeGen/atomic-ops.c
@@ -0,0 +1,79 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686-apple-darwin9 | FileCheck %s
+
+// Basic IRGen tests for __atomic_*
+
+// FIXME: Need to implement __atomic_is_lock_free
+
+typedef enum memory_order {
+  memory_order_relaxed, memory_order_consume, memory_order_acquire,
+  memory_order_release, memory_order_acq_rel, memory_order_seq_cst
+} memory_order;
+
+int fi1(_Atomic(int) *i) {
+  // CHECK: @fi1
+  // CHECK: load atomic i32* {{.*}} seq_cst
+  return __atomic_load(i, memory_order_seq_cst);
+}
+
+void fi2(_Atomic(int) *i) {
+  // CHECK: @fi2
+  // CHECK: store atomic i32 {{.*}} seq_cst
+  __atomic_store(i, 1, memory_order_seq_cst);
+}
+
+void fi3(_Atomic(int) *i) {
+  // CHECK: @fi3
+  // CHECK: atomicrmw and
+  __atomic_fetch_and(i, 1, memory_order_seq_cst);
+}
+
+void fi4(_Atomic(int) *i) {
+  // CHECK: @fi4
+  // CHECK: cmpxchg i32*
+  int cmp = 0;
+  __atomic_compare_exchange_strong(i, &cmp, 1, memory_order_acquire, memory_order_acquire);
+}
+
+float ff1(_Atomic(float) *d) {
+  // CHECK: @ff1
+  // CHECK: load atomic i32* {{.*}} monotonic
+  return __atomic_load(d, memory_order_relaxed);
+}
+
+void ff2(_Atomic(float) *d) {
+  // CHECK: @ff2
+  // CHECK: store atomic i32 {{.*}} release
+  __atomic_store(d, 1, memory_order_release);
+}
+
+float ff3(_Atomic(float) *d) {
+  return __atomic_exchange(d, 2, memory_order_seq_cst);
+}
+
+int* fp1(_Atomic(int*) *p) {
+  // CHECK: @fp1
+  // CHECK: load atomic i32* {{.*}} seq_cst
+  return __atomic_load(p, memory_order_seq_cst);
+}
+
+int* fp2(_Atomic(int*) *p) {
+  // CHECK: @fp2
+  // CHECK: store i32 4
+  // CHECK: atomicrmw add {{.*}} monotonic
+  return __atomic_fetch_add(p, 1, memory_order_relaxed);
+}
+
+// FIXME: Alignment specification shouldn't be necessary
+typedef _Complex float ComplexAligned __attribute((aligned(8)));
+_Complex float fc(_Atomic(ComplexAligned) *c) {
+  // CHECK: @fc
+  // CHECK: atomicrmw xchg i64*
+  return __atomic_exchange(c, 2, memory_order_seq_cst);
+}
+
+typedef struct X { int x; } X;
+X fs(_Atomic(X) *c) {
+  // CHECK: @fs
+  // CHECK: atomicrmw xchg i32*
+  return __atomic_exchange(c, (X){2}, memory_order_seq_cst);
+}
-- 
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