Add the clang library to the repo (with some of my changes, too).

1 files changed, 49 insertions, 0 deletions

diff --git a/clang/test/CodeGen/trapv.c b/clang/test/CodeGen/trapv.c
new file mode 100644
index 0000000..f52dad5
--- /dev/null
+++ b/clang/test/CodeGen/trapv.c
@@ -0,0 +1,49 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -ftrapv %s -emit-llvm -o - | FileCheck %s
+
+unsigned int ui, uj, uk;
+int i, j, k;
+
+// CHECK: define void @test0()
+void test0() {
+  // -ftrapv doesn't affect unsigned arithmetic.
+  // CHECK:      [[T1:%.*]] = load i32* @uj
+  // CHECK-NEXT: [[T2:%.*]] = load i32* @uk
+  // CHECK-NEXT: [[T3:%.*]] = add i32 [[T1]], [[T2]]
+  // CHECK-NEXT: store i32 [[T3]], i32* @ui
+  ui = uj + uk;
+
+  // CHECK:      [[T1:%.*]] = load i32* @j
+  // CHECK-NEXT: [[T2:%.*]] = load i32* @k
+  // CHECK-NEXT: [[T3:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 [[T2]])
+  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T3]], 0
+  // CHECK-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T3]], 1
+  // CHECK-NEXT: br i1 [[T5]]
+  // CHECK:      call void @llvm.trap()
+  i = j + k;
+}
+
+// CHECK: define void @test1()
+void test1() {
+  extern void opaque(int);
+  opaque(i++);
+
+  // CHECK:      [[T1:%.*]] = load i32* @i
+  // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
+  // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
+  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
+  // CHECK-NEXT: br i1 [[T4]]
+  // CHECK:      call void @llvm.trap()
+}
+
+// CHECK: define void @test2()
+void test2() {
+  extern void opaque(int);
+  opaque(++i);
+
+  // CHECK:      [[T1:%.*]] = load i32* @i
+  // CHECK-NEXT: [[T2:%.*]] = call { i32, i1 } @llvm.sadd.with.overflow.i32(i32 [[T1]], i32 1)
+  // CHECK-NEXT: [[T3:%.*]] = extractvalue { i32, i1 } [[T2]], 0
+  // CHECK-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T2]], 1
+  // CHECK-NEXT: br i1 [[T4]]
+  // CHECK:      call void @llvm.trap()
+}