Propagate alignment for _Complex

_Complex load/store didn't have their alignment set properly, which was visible when GCC's torture tests use volatile _Complex.

Update some existing tests to check for alignment, and add a new test which also has over-aligned volatile _Complex (since the imaginary part shouldn't be overaligned, only the real part).

llvm-svn: 186490

1 files changed, 63 insertions, 0 deletions

diff --git a/clang/test/CodeGen/volatile-complex.c b/clang/test/CodeGen/volatile-complex.c
new file mode 100644
index 00000000000..b34ec1305e2
--- /dev/null
+++ b/clang/test/CodeGen/volatile-complex.c
@@ -0,0 +1,63 @@
+// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
+
+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
+}