1 files changed, 67 insertions, 0 deletions
diff --git a/test/CodeGen/builtin-assume-aligned.c b/test/CodeGen/builtin-assume-aligned.c
new file mode 100644
index 0000000..1d807a4
--- /dev/null
+++ b/test/CodeGen/builtin-assume-aligned.c
@@ -0,0 +1,67 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
+
+// CHECK-LABEL: @test1
+int test1(int *a) {
+// CHECK: [[PTRINT1:%.+]] = ptrtoint
+// CHECK: [[MASKEDPTR1:%.+]] = and i64 [[PTRINT1]], 31
+// CHECK: [[MASKCOND1:%.+]] = icmp eq i64 [[MASKEDPTR1]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND1]])
+  a = __builtin_assume_aligned(a, 32, 0ull);
+  return a[0];
+}
+
+// CHECK-LABEL: @test2
+int test2(int *a) {
+// CHECK: [[PTRINT2:%.+]] = ptrtoint
+// CHECK: [[MASKEDPTR2:%.+]] = and i64 [[PTRINT2]], 31
+// CHECK: [[MASKCOND2:%.+]] = icmp eq i64 [[MASKEDPTR2]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND2]])
+  a = __builtin_assume_aligned(a, 32, 0);
+  return a[0];
+}
+
+// CHECK-LABEL: @test3
+int test3(int *a) {
+// CHECK: [[PTRINT3:%.+]] = ptrtoint
+// CHECK: [[MASKEDPTR3:%.+]] = and i64 [[PTRINT3]], 31
+// CHECK: [[MASKCOND3:%.+]] = icmp eq i64 [[MASKEDPTR3]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND3]])
+  a = __builtin_assume_aligned(a, 32);
+  return a[0];
+}
+
+// CHECK-LABEL: @test4
+int test4(int *a, int b) {
+// CHECK-DAG: [[PTRINT4:%.+]] = ptrtoint
+// CHECK-DAG: [[CONV4:%.+]] = sext i32
+// CHECK: [[OFFSETPTR4:%.+]] = sub i64 [[PTRINT4]], [[CONV4]]
+// CHECK: [[MASKEDPTR4:%.+]] = and i64 [[OFFSETPTR4]], 31
+// CHECK: [[MASKCOND4:%.+]] = icmp eq i64 [[MASKEDPTR4]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND4]])
+  a = __builtin_assume_aligned(a, 32, b);
+  return a[0];
+}
+
+int *m1() __attribute__((assume_aligned(64)));
+
+// CHECK-LABEL: @test5
+int test5() {
+  return *m1();
+// CHECK: [[PTRINT5:%.+]] = ptrtoint
+// CHECK: [[MASKEDPTR5:%.+]] = and i64 [[PTRINT5]], 63
+// CHECK: [[MASKCOND5:%.+]] = icmp eq i64 [[MASKEDPTR5]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND5]])
+}
+
+int *m2() __attribute__((assume_aligned(64, 12)));
+
+// CHECK-LABEL: @test6
+int test6() {
+  return *m2();
+// CHECK: [[PTRINT6:%.+]] = ptrtoint
+// CHECK: [[OFFSETPTR6:%.+]] = sub i64 [[PTRINT6]], 12
+// CHECK: [[MASKEDPTR6:%.+]] = and i64 [[OFFSETPTR6]], 63
+// CHECK: [[MASKCOND6:%.+]] = icmp eq i64 [[MASKEDPTR6]], 0
+// CHECK: call void @llvm.assume(i1 [[MASKCOND6]])
+}
+