[CodeGen] add tests for abs builtins; NFC

llvm-svn: 332988

diff --git a/clang/test/CodeGen/builtin-abs.c b/clang/test/CodeGen/builtin-abs.c
new file mode 100644 (file)
index 0000000..b68d465
--- /dev/null
+++ b/clang/test/CodeGen/builtin-abs.c
@@ -0,0 +1,29 @@
+// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm %s -o - | FileCheck %s
+
+int absi(int x) {
+// CHECK-LABEL: @absi(
+// CHECK:   [[NEG:%.*]] = sub i32 0, [[X:%.*]]
+// CHECK:   [[CMP:%.*]] = icmp sge i32 [[X]], 0
+// CHECK:   [[SEL:%.*]] = select i1 [[CMP]], i32 [[X]], i32 [[NEG]]
+//
+  return __builtin_abs(x);
+}
+
+long absl(long x) {
+// CHECK-LABEL: @absl(
+// CHECK:   [[NEG:%.*]] = sub i64 0, [[X:%.*]]
+// CHECK:   [[CMP:%.*]] = icmp sge i64 [[X]], 0
+// CHECK:   [[SEL:%.*]] = select i1 [[CMP]], i64 [[X]], i64 [[NEG]]
+//
+  return __builtin_labs(x);
+}
+
+long long absll(long long x) {
+// CHECK-LABEL: @absll(
+// CHECK:   [[NEG:%.*]] = sub i64 0, [[X:%.*]]
+// CHECK:   [[CMP:%.*]] = icmp sge i64 [[X]], 0
+// CHECK:   [[SEL:%.*]] = select i1 [[CMP]], i64 [[X]], i64 [[NEG]]
+//
+  return __builtin_llabs(x);
+}
+