[SYCL][ESIMD] Pass to replace simd* parameters with native llvm vectors.

This pass is needed for the ESIMD backend to generate correct code.

Author: Pratik Ashar <[email protected]>

Signed-off-by: Konstantin S Bobrovsky <[email protected]>

Author: kbobrovs

clang/test/CodeGenSYCL/esimd-private-global.cpp

@@ -9,6 +9,6 @@ __attribute__((opencl_private)) __attribute__((register_num(17))) int vc;
 
 SYCL_EXTERNAL void init_vc(int x) {
   vc = x;
-  // CHECK: store i32 %0, i32* @vc
+  // CHECK: store i32 %x, i32* @vc
 }
 // CHECK: attributes #0 = { "genx_byte_offset"="17" "genx_volatile" }

llvm/include/llvm/SYCLLowerIR/LowerESIMD.h

@@ -42,6 +42,9 @@ class ESIMDLowerLoadStorePass : public PassInfoMixin<ESIMDLowerLoadStorePass> {
 FunctionPass *createESIMDLowerLoadStorePass();
 void initializeESIMDLowerLoadStorePass(PassRegistry &);
 
+ModulePass *createESIMDLowerVecArgPass();
+void initializeESIMDLowerVecArgLegacyPassPass(PassRegistry &);
+
 } // namespace llvm
 
 #endif // LLVM_SYCLLOWERIR_LOWERESIMD_H

llvm/lib/SYCLLowerIR/CMakeLists.txt

@@ -32,6 +32,7 @@ add_llvm_component_library(LLVMSYCLLowerIR
   LowerWGScope.cpp
   LowerESIMD.cpp
   LowerESIMDVLoadVStore.cpp
+  LowerESIMDVecArg.cpp
 
   ADDITIONAL_HEADER_DIRS
   ${LLVM_MAIN_INCLUDE_DIR}/llvm/SYCLLowerIR