llvm interpreter: select, shuffle and insertelement instructions.

This patch implements vector support for  select instruction and adds specific vector instructions : shuffle and insertelement. (tests are also included)
and functions lle_X_memset, lle_X_memcpy added.

Done by Veselov, Yuri (mailto:Yuri.Veselov@intel.com)

llvm-svn: 189735

1 files changed, 30 insertions, 2 deletions

diff --git a/llvm/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp b/llvm/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
index bef4bbf6602..6fb797347a8 100644
--- a/llvm/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
+++ b/llvm/lib/ExecutionEngine/Interpreter/ExternalFunctions.cpp
@@ -406,6 +406,7 @@ GenericValue lle_X_sprintf(FunctionType *FT,
       break;
     }
   }
+  return GV;
 }
 
 // int printf(const char *, ...) - a very rough implementation to make output
@@ -434,7 +435,7 @@ GenericValue lle_X_sscanf(FunctionType *FT,
 
   GenericValue GV;
   GV.IntVal = APInt(32, sscanf(Args[0], Args[1], Args[2], Args[3], Args[4],
-                        Args[5], Args[6], Args[7], Args[8], Args[9]));
+                    Args[5], Args[6], Args[7], Args[8], Args[9]));
   return GV;
 }
 
@@ -450,7 +451,7 @@ GenericValue lle_X_scanf(FunctionType *FT,
 
   GenericValue GV;
   GV.IntVal = APInt(32, scanf( Args[0], Args[1], Args[2], Args[3], Args[4],
-                        Args[5], Args[6], Args[7], Args[8], Args[9]));
+                    Args[5], Args[6], Args[7], Args[8], Args[9]));
   return GV;
 }
 
@@ -470,6 +471,31 @@ GenericValue lle_X_fprintf(FunctionType *FT,
   return GV;
 }
 
+GenericValue lle_X_memset(FunctionType *FT,
+                           const std::vector<GenericValue> &Args) {
+  int val = (int)Args[1].IntVal.getSExtValue();
+  size_t len = (size_t)Args[2].IntVal.getZExtValue();
+  memset((void*)GVTOP(Args[0]),val, len);
+  // llvm.memset.* returns void, lle_X_* returns GenericValue,
+  // so here we return GenericValue with IntVal set to zero
+  GenericValue GV;
+  GV.IntVal = 0;
+  return GV;
+}
+
+GenericValue lle_X_memcpy(FunctionType *FT,
+                          const std::vector<GenericValue> &Args) {
+
+  memcpy(GVTOP(Args[0]), GVTOP(Args[1]),
+         (size_t)(Args[2].IntVal.getLimitedValue()));
+
+  // llvm.mecpy* returns void, lle_X_* returns GenericValue,
+  // so here we return GenericValue with IntVal set to zero
+  GenericValue GV;
+  GV.IntVal = 0;
+  return GV;
+}
+
 void Interpreter::initializeExternalFunctions() {
   sys::ScopedLock Writer(*FunctionsLock);
   FuncNames["lle_X_atexit"]       = lle_X_atexit;
@@ -481,4 +507,6 @@ void Interpreter::initializeExternalFunctions() {
   FuncNames["lle_X_sscanf"]       = lle_X_sscanf;
   FuncNames["lle_X_scanf"]        = lle_X_scanf;
   FuncNames["lle_X_fprintf"]      = lle_X_fprintf;
+  FuncNames["lle_X_memset"]       = lle_X_memset;
+  FuncNames["lle_X_memcpy"]       = lle_X_memcpy;
 }