swr/rast: Add MEM_ADD helper function to Builder.

mem[offset] += value

This function will be heavily used by all stats intrinsics.

Reviewed-by: Bruce Cherniak <bruce.cherniak@intel.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.cpp b/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.cpp
index a825434de7..dee08b8169 100644
--- a/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.cpp
+++ b/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.cpp
@@ -134,6 +134,13 @@ namespace SwrJit
         return GEP(base, offset);
     }
 
+    Value* Builder::MEM_ADD(Value* i32Incr, Value* basePtr, const std::initializer_list<uint32_t> &indices, const llvm::Twine& name)
+    {
+        Value* i32Value = LOAD(GEP(basePtr, indices), name);
+        Value* i32Result = ADD(i32Value, i32Incr);
+        return STORE(i32Result, GEP(basePtr, indices));
+    }
+
     //////////////////////////////////////////////////////////////////////////
     /// @brief Generate a masked gather operation in LLVM IR.  If not  
     /// supported on the underlying platform, emulate it with loads
diff --git a/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.h b/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.h
index b538342146..59b45c1b41 100644
--- a/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.h
+++ b/src/gallium/drivers/swr/rasterizer/jitter/builder_mem.h
@@ -60,6 +60,8 @@ LoadInst *LOADV(Value *BasePtr, const std::initializer_list<Value*> &offset, con
 StoreInst *STORE(Value *Val, Value *BasePtr, const std::initializer_list<uint32_t> &offset);
 StoreInst *STOREV(Value *Val, Value *BasePtr, const std::initializer_list<Value*> &offset);
 
+Value* MEM_ADD(Value* i32Incr, Value* basePtr, const std::initializer_list<uint32_t> &indices, const llvm::Twine& name = "");
+
 void Gather4(const SWR_FORMAT format, Value* pSrcBase, Value* byteOffsets,
     Value* mask, Value* vGatherComponents[], bool bPackedOutput, JIT_MEM_CLIENT usage = MEM_CLIENT_INTERNAL);