[libclc] 68/291: Implement mad24() and mul24() builtins

[Andreas Beckmann]

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anbe pushed a commit to branch master
in repository libclc.

commit 045f1a8fe7dbd917fe12c9415dac47047f3a5a0b
Author: Tom Stellard <thomas.stellard at amd.com>
Date:   Mon Jul 8 17:27:13 2013 +0000

    Implement mad24() and mul24() builtins
    
    Reviewed-by: Aaron Watry <awatry at gmail.com>
    
    git-svn-id: https://llvm.org/svn/llvm-project/libclc/trunk@185839 91177308-0d34-0410-b5e6-96231b3b80d8
---
 generic/include/clc/clc.h             |  2 ++
 generic/include/clc/integer/mad24.h   |  3 +++
 generic/include/clc/integer/mad24.inc |  1 +
 generic/include/clc/integer/mul24.h   |  3 +++
 generic/include/clc/integer/mul24.inc |  1 +
 generic/lib/SOURCES                   |  2 ++
 generic/lib/integer/mad24.cl          |  4 ++++
 generic/lib/integer/mad24.inc         |  3 +++
 generic/lib/integer/mul24.cl          |  4 ++++
 generic/lib/integer/mul24.inc         | 11 +++++++++++
 10 files changed, 34 insertions(+)

diff --git a/generic/include/clc/clc.h b/generic/include/clc/clc.h
index 1ce97ad..dfdf747 100644
--- a/generic/include/clc/clc.h
+++ b/generic/include/clc/clc.h
@@ -64,6 +64,8 @@
 #include <clc/integer/abs_diff.h>
 #include <clc/integer/add_sat.h>
 #include <clc/integer/clz.h>
+#include <clc/integer/mad24.h>
+#include <clc/integer/mul24.h>
 #include <clc/integer/rotate.h>
 #include <clc/integer/sub_sat.h>
 
diff --git a/generic/include/clc/integer/mad24.h b/generic/include/clc/integer/mad24.h
new file mode 100644
index 0000000..0c120fa
--- /dev/null
+++ b/generic/include/clc/integer/mad24.h
@@ -0,0 +1,3 @@
+#define __CLC_BODY <clc/integer/mad24.inc>
+#include <clc/integer/integer-gentype.inc>
+#undef __CLC_BODY
diff --git a/generic/include/clc/integer/mad24.inc b/generic/include/clc/integer/mad24.inc
new file mode 100644
index 0000000..81fe0c2
--- /dev/null
+++ b/generic/include/clc/integer/mad24.inc
@@ -0,0 +1 @@
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE mad24(__CLC_GENTYPE x, __CLC_GENTYPE y, __CLC_GENTYPE z);
diff --git a/generic/include/clc/integer/mul24.h b/generic/include/clc/integer/mul24.h
new file mode 100644
index 0000000..4f97098
--- /dev/null
+++ b/generic/include/clc/integer/mul24.h
@@ -0,0 +1,3 @@
+#define __CLC_BODY <clc/integer/mul24.inc>
+#include <clc/integer/integer-gentype.inc>
+#undef __CLC_BODY
diff --git a/generic/include/clc/integer/mul24.inc b/generic/include/clc/integer/mul24.inc
new file mode 100644
index 0000000..8cbf7c1
--- /dev/null
+++ b/generic/include/clc/integer/mul24.inc
@@ -0,0 +1 @@
+_CLC_OVERLOAD _CLC_DECL __CLC_GENTYPE mul24(__CLC_GENTYPE x, __CLC_GENTYPE y);
diff --git a/generic/lib/SOURCES b/generic/lib/SOURCES
index 8cda14a..c2da3d7 100644
--- a/generic/lib/SOURCES
+++ b/generic/lib/SOURCES
@@ -11,6 +11,8 @@ integer/add_sat_impl.ll
 integer/clz.cl
 integer/clz_if.ll
 integer/clz_impl.ll
+integer/mad24.cl
+integer/mul24.cl
 integer/rotate.cl
 integer/sub_sat.cl
 integer/sub_sat_if.ll
diff --git a/generic/lib/integer/mad24.cl b/generic/lib/integer/mad24.cl
new file mode 100644
index 0000000..e29e99f
--- /dev/null
+++ b/generic/lib/integer/mad24.cl
@@ -0,0 +1,4 @@
+#include <clc/clc.h>
+
+#define __CLC_BODY <mad24.inc>
+#include <clc/integer/integer-gentype.inc>
diff --git a/generic/lib/integer/mad24.inc b/generic/lib/integer/mad24.inc
new file mode 100644
index 0000000..902b0aa
--- /dev/null
+++ b/generic/lib/integer/mad24.inc
@@ -0,0 +1,3 @@
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE mad24(__CLC_GENTYPE x, __CLC_GENTYPE y, __CLC_GENTYPE z){
+  return mul24(x, y) + z;
+}
diff --git a/generic/lib/integer/mul24.cl b/generic/lib/integer/mul24.cl
new file mode 100644
index 0000000..8aedca6
--- /dev/null
+++ b/generic/lib/integer/mul24.cl
@@ -0,0 +1,4 @@
+#include <clc/clc.h>
+
+#define __CLC_BODY <mul24.inc>
+#include <clc/integer/integer-gentype.inc>
diff --git a/generic/lib/integer/mul24.inc b/generic/lib/integer/mul24.inc
new file mode 100644
index 0000000..95a2f1d
--- /dev/null
+++ b/generic/lib/integer/mul24.inc
@@ -0,0 +1,11 @@
+
+// We need to use shifts here in order to mantain the sign bit for signed
+// integers.  The compiler should optimize this to (x & 0x00FFFFFF) for
+// unsigned integers.
+#define CONVERT_TO_24BIT(x) (((x) << 8) >> 8)
+
+_CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE mul24(__CLC_GENTYPE x, __CLC_GENTYPE y){
+  return CONVERT_TO_24BIT(x) * CONVERT_TO_24BIT(y);
+}
+
+#undef CONVERT_TO_24BIT

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