[Beignet] [PATCH] support saturated-rounding converting

[Homer Hsing]

passed piglit test case:
  piglit/bin/cl-program-tester tests/cl/program/execute/vector-conversion.cl

remark:
  this patch does not include updating of "ocl_convert.h",
  because in that case, the patch is larger than max email size.
  "ocl_convert.h" can be auto gen by "gen_convert.sh".

Signed-off-by: Homer Hsing <homer.xing at intel.com>
---
 backend/src/gen_convert.sh | 83 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)

diff --git a/backend/src/gen_convert.sh b/backend/src/gen_convert.sh
index 1d1c0e7..0d84e50 100755
--- a/backend/src/gen_convert.sh
+++ b/backend/src/gen_convert.sh
@@ -314,3 +314,86 @@ for vector_length in $VECTOR_LENGTHS; do
     done
   done
 done
+
+# convert_DSTTYPE_sat_ROUNDING function
+for vector_length in $VECTOR_LENGTHS; do
+  for ftype in $TYPES; do
+    fbasetype=`IFS=:; set -- dummy $ftype; echo $2`
+    if test $fbasetype = "double"; then continue; fi
+
+    for ttype in $TYPES; do
+      tbasetype=`IFS=:; set -- dummy $ttype; echo $2`
+      if test $tbasetype = "double" -o $tbasetype = "float"; then continue; fi
+
+      if test $vector_length -eq 1; then
+        echo "INLINE_OVERLOADABLE $tbasetype convert_${tbasetype}_sat_rte($fbasetype x)"
+        if test $fbasetype = "float"; then
+          echo "{ return convert_${tbasetype}_sat(__gen_ocl_rnde(x)); }"
+        else
+          echo "{ return convert_${tbasetype}_sat(x); }"
+        fi
+
+        echo "INLINE_OVERLOADABLE $tbasetype convert_${tbasetype}_sat_rtz($fbasetype x)"
+        if test $fbasetype = "float"; then
+          echo "{ return convert_${tbasetype}_sat(__gen_ocl_rndz(x)); }"
+        else
+          echo "{ return convert_${tbasetype}_sat(x); }"
+        fi
+
+        echo "INLINE_OVERLOADABLE $tbasetype convert_${tbasetype}_sat_rtp($fbasetype x)"
+        if test $fbasetype = "float"; then
+          echo "{ return convert_${tbasetype}_sat(__gen_ocl_rndu(x)); }"
+        else
+          echo "{ return convert_${tbasetype}_sat(x); }"
+        fi
+
+        echo "INLINE_OVERLOADABLE $tbasetype convert_${tbasetype}_sat_rtn($fbasetype x)"
+        if test $fbasetype = "float"; then
+          echo "{ return convert_${tbasetype}_sat(__gen_ocl_rndd(x)); }"
+        else
+          echo "{ return convert_${tbasetype}_sat(x); }"
+        fi
+
+        continue
+      fi
+
+      for rounding in $ROUNDING_MODES; do
+        fvectortype=$fbasetype$vector_length
+        tvectortype=$tbasetype$vector_length
+        conv="convert_${tbasetype}_sat_${rounding}"
+
+        construct="$conv(v.s0)"
+        if test $vector_length -gt 1; then
+          construct="$construct, $conv(v.s1)"
+        fi
+        if test $vector_length -gt 2; then
+          construct="$construct, $conv(v.s2)"
+        fi
+        if test $vector_length -gt 3; then
+          construct="$construct, $conv(v.s3)"
+        fi
+        if test $vector_length -gt 4; then
+          construct="$construct, $conv(v.s4)"
+          construct="$construct, $conv(v.s5)"
+          construct="$construct, $conv(v.s6)"
+          construct="$construct, $conv(v.s7)"
+        fi
+        if test $vector_length -gt 8; then
+          construct="$construct, $conv(v.s8)"
+          construct="$construct, $conv(v.s9)"
+          construct="$construct, $conv(v.sA)"
+          construct="$construct, $conv(v.sB)"
+          construct="$construct, $conv(v.sC)"
+          construct="$construct, $conv(v.sD)"
+          construct="$construct, $conv(v.sE)"
+          construct="$construct, $conv(v.sF)"
+        fi
+
+        echo "INLINE OVERLOADABLE $tvectortype convert_${tvectortype}_sat_${rounding}($fvectortype v) {"
+        echo "  return ($tvectortype)($construct);"
+        echo "}"
+        echo
+      done
+    done
+  done
+done
-- 
1.8.3.2