From f414fb75b040fbcd400031780cdcb63db5f3bf63 Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Thu, 21 Aug 2014 13:58:36 +0000
Subject: [PATCH] Driver: Implement -cl-denorms-are-zero

This is currently a no-op, which is allowed by the OpenCL specification.

llvm-svn: 216179
---
 clang/include/clang/Driver/CC1Options.td     | 2 ++
 clang/test/CodeGenOpenCL/denorms-are-zero.cl | 5 +++++
 2 files changed, 7 insertions(+)
 create mode 100644 clang/test/CodeGenOpenCL/denorms-are-zero.cl

diff --git a/clang/include/clang/Driver/CC1Options.td b/clang/include/clang/Driver/CC1Options.td
index a87d7aae5533..837d5d5cf032 100644
--- a/clang/include/clang/Driver/CC1Options.td
+++ b/clang/include/clang/Driver/CC1Options.td
@@ -574,6 +574,8 @@ def cl_mad_enable : Flag<["-"], "cl-mad-enable">,
   HelpText<"OpenCL only. Enable less precise MAD instructions to be generated.">;
 def cl_std_EQ : Joined<["-"], "cl-std=">,
   HelpText<"OpenCL language standard to compile for">;
+def cl_denorms_are_zero : Flag<["-"], "cl-denorms-are-zero">,
+  HelpText<"OpenCL only. Allow denormals to be flushed to zero">;
 
 //===----------------------------------------------------------------------===//
 // CUDA Options
diff --git a/clang/test/CodeGenOpenCL/denorms-are-zero.cl b/clang/test/CodeGenOpenCL/denorms-are-zero.cl
new file mode 100644
index 000000000000..488004fa4fc3
--- /dev/null
+++ b/clang/test/CodeGenOpenCL/denorms-are-zero.cl
@@ -0,0 +1,5 @@
+// RUN: %clang_cc1 -S -cl-denorms-are-zero -o - %s 2>&1
+
+// This test just checks that the -cl-denorms-are-zero argument is accepted
+// by clang.  This option is currently a no-op, which is allowed by the
+// OpenCL specification.