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

1 files changed, 33 insertions, 0 deletions

diff --git a/clang/test/CodeGen/count-builtins.c b/clang/test/CodeGen/count-builtins.c
new file mode 100644
index 0000000..e6133c5
--- /dev/null
+++ b/clang/test/CodeGen/count-builtins.c
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 %s -emit-llvm -o - | FileCheck %s
+
+int leading, trailing, pop;
+
+void test_i16(short P) {
+  leading = __builtin_clzs(P);
+  trailing = __builtin_ctzs(P);
+
+// CHECK: @test_i16
+// CHECK: call i16 @llvm.ctlz.i16
+// CHECK: call i16 @llvm.cttz.i16
+}
+
+void test_i32(int P) {
+  leading = __builtin_clz(P);
+  trailing = __builtin_ctz(P);
+  pop = __builtin_popcount(P);
+
+// CHECK: @test_i32
+// CHECK: call i32 @llvm.ctlz.i32
+// CHECK: call i32 @llvm.cttz.i32
+// CHECK: call i32 @llvm.ctpop.i32
+}
+
+void test_i64(float P) {
+  leading = __builtin_clzll(P);
+  trailing = __builtin_ctzll(P);
+  pop = __builtin_popcountll(P);
+// CHECK: @test_i64
+// CHECK: call i64 @llvm.ctlz.i64
+// CHECK: call i64 @llvm.cttz.i64
+// CHECK: call i64 @llvm.ctpop.i64
+}