1 files changed, 72 insertions, 0 deletions
diff --git a/test/CodeGen/volatile-complex.c b/test/CodeGen/volatile-complex.c
new file mode 100644
index 0000000000..92ffd9de45
--- /dev/null
+++ b/test/CodeGen/volatile-complex.c
@@ -0,0 +1,72 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+
+// Validate that volatile _Complex loads and stores are generated
+// properly, including their alignment (even when overaligned).
+//
+// This test assumes that floats are 32-bit aligned and doubles are
+// 64-bit aligned, and uses x86-64 as a target that should have this
+// datalayout.
+
+// CHECK: target datalayout = "{{.*}}f32:32:32-f64:64:64{{.*}}"
+
+volatile _Complex float cf;
+volatile _Complex double cd;
+volatile _Complex float cf32 __attribute__((aligned(32)));
+volatile _Complex double cd32 __attribute__((aligned(32)));
+
+
+// CHECK: define void @test_cf()
+// CHECK-NEXT: entry:
+void test_cf() {
+  // CHECK-NEXT: load volatile float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 0), align 4
+  // CHECK-NEXT: load volatile float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 1), align 4
+  (void)(cf);
+  // CHECK-NEXT: [[R:%.*]] = load volatile float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 0), align 4
+  // CHECK-NEXT: [[I:%.*]] = load volatile float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 1), align 4
+  // CHECK-NEXT: store volatile float [[R]], float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 0), align 4
+  // CHECK-NEXT: store volatile float [[I]], float* getelementptr inbounds ({ float, float }* @cf, i32 0, i32 1), align 4
+  (void)(cf=cf);
+  // CHECK-NEXT: ret void
+}
+
+// CHECK: define void @test_cd()
+// CHECK-NEXT: entry:
+void test_cd() {
+  // CHECK-NEXT: load volatile double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 0), align 8
+  // CHECK-NEXT: load volatile double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 1), align 8
+  (void)(cd);
+  // CHECK-NEXT: [[R:%.*]] = load volatile double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 0), align 8
+  // CHECK-NEXT: [[I:%.*]] = load volatile double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 1), align 8
+  // CHECK-NEXT: store volatile double [[R]], double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 0), align 8
+  // CHECK-NEXT: store volatile double [[I]], double* getelementptr inbounds ({ double, double }* @cd, i32 0, i32 1), align 8
+  (void)(cd=cd);
+  // CHECK-NEXT: ret void
+}
+
+// CHECK: define void @test_cf32()
+// CHECK-NEXT: entry:
+void test_cf32() {
+  // CHECK-NEXT: load volatile float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 0), align 32
+  // CHECK-NEXT: load volatile float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 1), align 4
+  (void)(cf32);
+  // CHECK-NEXT: [[R:%.*]] = load volatile float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 0), align 32
+  // CHECK-NEXT: [[I:%.*]] = load volatile float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 1), align 4
+  // CHECK-NEXT: store volatile float [[R]], float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 0), align 32
+  // CHECK-NEXT: store volatile float [[I]], float* getelementptr inbounds ({ float, float }* @cf32, i32 0, i32 1), align 4
+  (void)(cf32=cf32);
+  // CHECK-NEXT: ret void
+}
+
+// CHECK: define void @test_cd32()
+// CHECK-NEXT: entry:
+void test_cd32() {
+  // CHECK-NEXT: load volatile double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 0), align 32
+  // CHECK-NEXT: load volatile double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 1), align 8
+  (void)(cd32);
+  // CHECK-NEXT: [[R:%.*]] = load volatile double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 0), align 32
+  // CHECK-NEXT: [[I:%.*]] = load volatile double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 1), align 8
+  // CHECK-NEXT: store volatile double [[R]], double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 0), align 32
+  // CHECK-NEXT: store volatile double [[I]], double* getelementptr inbounds ({ double, double }* @cd32, i32 0, i32 1), align 8
+  (void)(cd32=cd32);
+  // CHECK-NEXT: ret void
+}