From 86b375f2f3c5d039a74be6481f11426fb51a5e38 Mon Sep 17 00:00:00 2001
From: Brandon Potter <brandon.potter@amd.com>
Date: Fri, 2 Dec 2016 18:01:55 -0500
Subject: hsail: add popcount type and generate popcount instructions

---
 src/arch/hsail/Brig_new.hpp  |  2 ++
 src/arch/hsail/gen.py        |  7 +++++--
 src/arch/hsail/insts/decl.hh | 20 ++++++++++++++++++++
 3 files changed, 27 insertions(+), 2 deletions(-)

(limited to 'src/arch')

diff --git a/src/arch/hsail/Brig_new.hpp b/src/arch/hsail/Brig_new.hpp
index 60e6f4dea..95fcf4d46 100644
--- a/src/arch/hsail/Brig_new.hpp
+++ b/src/arch/hsail/Brig_new.hpp
@@ -1455,6 +1455,8 @@ struct BrigInstSourceType {
     uint16_t reserved; //.defValue=0
 };
 
+typedef BrigInstSourceType BrigInstPopcount;
+
 struct BrigOperandAddress {
     BrigBase base;
     BrigCodeOffset32_t symbol; //.wtype=ItemRef<DirectiveVariable>
diff --git a/src/arch/hsail/gen.py b/src/arch/hsail/gen.py
index 0cc111e53..d07d49c28 100755
--- a/src/arch/hsail/gen.py
+++ b/src/arch/hsail/gen.py
@@ -211,6 +211,7 @@ header_templates = {
     'ExtractInsertInst': header_template_1dt,
     'CmpInst': header_template_2dt,
     'CvtInst': header_template_2dt,
+    'PopcountInst': header_template_2dt,
     'LdInst': '',
     'StInst': '',
     'SpecialInstNoSrc': header_template_nodt,
@@ -426,6 +427,7 @@ exec_templates = {
     'ClassInst': exec_template_1dt_2src_1dest,
     'CmpInst': exec_template_2dt,
     'CvtInst': exec_template_2dt,
+    'PopcountInst': exec_template_2dt,
     'LdInst': '',
     'StInst': '',
     'SpecialInstNoSrc': exec_template_nodt_nosrc,
@@ -555,7 +557,7 @@ def gen(brig_opcode, types=None, expr=None, base_class='ArithInst',
         dest_is_src_flag = str(dest_is_src).lower() # for C++
         if base_class in ['ShiftInst']:
             expr = re.sub(r'\bsrc(\d)\b', r'src_val\1', expr)
-        elif base_class in ['ArithInst', 'CmpInst', 'CvtInst']:
+        elif base_class in ['ArithInst', 'CmpInst', 'CvtInst', 'PopcountInst']:
             expr = re.sub(r'\bsrc(\d)\b', r'src_val[\1]', expr)
         else:
             expr = re.sub(r'\bsrc(\d)\b', r'src_val\1', expr)
@@ -674,7 +676,8 @@ gen('Xor', bit_types, 'src0 ^ src1')
 
 gen('Bitselect', bit_types, '(src1 & src0) | (src2 & ~src0)')
 gen('Firstbit',bit_types, 'firstbit(src0)')
-gen('Popcount', ('B32', 'B64'), '__builtin_popcount(src0)')
+gen('Popcount', ('U32',), '__builtin_popcount(src0)', 'PopcountInst', \
+    ('sourceType', ('B32', 'B64')))
 
 gen('Shl', arith_int_types, 'src0 << (unsigned)src1', 'ShiftInst')
 gen('Shr', arith_int_types, 'src0 >> (unsigned)src1', 'ShiftInst')
diff --git a/src/arch/hsail/insts/decl.hh b/src/arch/hsail/insts/decl.hh
index 4c0bc9ce1..919a4d9d4 100644
--- a/src/arch/hsail/insts/decl.hh
+++ b/src/arch/hsail/insts/decl.hh
@@ -725,6 +725,26 @@ namespace HsailISA
         }
     };
 
+    template<typename DestDataType, typename SrcDataType>
+    class PopcountInst :
+        public CommonInstBase<typename DestDataType::OperandType,
+                              typename SrcDataType::OperandType, 1>
+    {
+      public:
+        std::string opcode_suffix()
+        {
+            return csprintf("_%s_%s", DestDataType::label, SrcDataType::label);
+        }
+
+        PopcountInst(const Brig::BrigInstBase *ib, const BrigObject *obj,
+                     const char *_opcode)
+            : CommonInstBase<typename DestDataType::OperandType,
+                             typename SrcDataType::OperandType,
+                             1>(ib, obj, _opcode)
+        {
+        }
+    };
+
     class SpecialInstNoSrcNoDest : public HsailGPUStaticInst
     {
       public:
-- 
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