From acba2c98eb2ab1c96498f88c0a1bbbbfbcadb5b2 Mon Sep 17 00:00:00 2001
From: Jan Vesely <jan.vesely@rutgers.edu>
Date: Fri, 1 Aug 2014 21:50:55 +0000
Subject: [PATCH] relational: Add isless(floatN) builtin

v2: remove the initial undef

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewed-by: Aaron Watry <awatry@gmail.com>
llvm-svn: 214567
---
 libclc/generic/include/clc/clc.h              |  1 +
 .../generic/include/clc/relational/isless.h   |  7 ++++++
 libclc/generic/lib/SOURCES                    |  1 +
 libclc/generic/lib/relational/isless.cl       | 22 +++++++++++++++++++
 4 files changed, 31 insertions(+)
 create mode 100644 libclc/generic/include/clc/relational/isless.h
 create mode 100644 libclc/generic/lib/relational/isless.cl

diff --git a/libclc/generic/include/clc/clc.h b/libclc/generic/include/clc/clc.h
index 60b5a6c5ec1d..83bf8faa059e 100644
--- a/libclc/generic/include/clc/clc.h
+++ b/libclc/generic/include/clc/clc.h
@@ -115,6 +115,7 @@
 #include <clc/relational/isequal.h>
 #include <clc/relational/isgreater.h>
 #include <clc/relational/isgreaterequal.h>
+#include <clc/relational/isless.h>
 #include <clc/relational/isnan.h>
 #include <clc/relational/isnotequal.h>
 #include <clc/relational/select.h>
diff --git a/libclc/generic/include/clc/relational/isless.h b/libclc/generic/include/clc/relational/isless.h
new file mode 100644
index 000000000000..1debd87f386e
--- /dev/null
+++ b/libclc/generic/include/clc/relational/isless.h
@@ -0,0 +1,7 @@
+#define __CLC_FUNCTION isless
+#define __CLC_BODY <clc/relational/binary_decl.inc>
+
+#include <clc/relational/floatn.inc>
+
+#undef __CLC_BODY
+#undef __CLC_FUNCTION
diff --git a/libclc/generic/lib/SOURCES b/libclc/generic/lib/SOURCES
index 7efe08c20212..7faba40de354 100644
--- a/libclc/generic/lib/SOURCES
+++ b/libclc/generic/lib/SOURCES
@@ -48,6 +48,7 @@ relational/any.cl
 relational/isequal.cl
 relational/isgreater.cl
 relational/isgreaterequal.cl
+relational/isless.cl
 relational/isnan.cl
 relational/isnotequal.cl
 relational/signbit.cl
diff --git a/libclc/generic/lib/relational/isless.cl b/libclc/generic/lib/relational/isless.cl
new file mode 100644
index 000000000000..56a3e1329b48
--- /dev/null
+++ b/libclc/generic/lib/relational/isless.cl
@@ -0,0 +1,22 @@
+#include <clc/clc.h>
+#include "relational.h"
+
+//Note: It would be nice to use __builtin_isless with vector inputs, but it seems to only take scalar values as
+//      input, which will produce incorrect output for vector input types.
+
+_CLC_DEFINE_RELATIONAL_BINARY(int, isless, __builtin_isless, float, float)
+
+#ifdef cl_khr_fp64
+
+#pragma OPENCL EXTENSION cl_khr_fp64 : enable
+
+// The scalar version of isless(double, double) returns an int, but the vector versions
+// return long.
+
+_CLC_DEF _CLC_OVERLOAD int isless(double x, double y){
+	return __builtin_isless(x, y);
+}
+
+_CLC_DEFINE_RELATIONAL_BINARY_VEC_ALL(long, isless, double, double)
+
+#endif