[Beignet] [PATCH 3/4] SPIR binary support for printf function.

[xionghu.luo at intel.com]

From: Luo Xionghu <xionghu.luo at intel.com>

rename "printf" to "__gen_ocl_printf_stub" and "puts" to
"__gen_ocl_puts_stub" in PrintfParser after link.

Signed-off-by: Luo Xionghu <xionghu.luo at intel.com>
---
 backend/src/libocl/include/ocl_printf.h |  3 +++
 backend/src/llvm/llvm_printf_parser.cpp | 12 ++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/backend/src/libocl/include/ocl_printf.h b/backend/src/libocl/include/ocl_printf.h
index ffeefb9..27cef27 100644
--- a/backend/src/libocl/include/ocl_printf.h
+++ b/backend/src/libocl/include/ocl_printf.h
@@ -24,9 +24,12 @@
 /* From LLVM 3.4, c string are all in constant address space */
 #if 100*__clang_major__ + __clang_minor__ < 304
 int __gen_ocl_printf_stub(const char * format, ...);
+int __gen_ocl_puts_stub(const char * format);
 #else
 int __gen_ocl_printf_stub(constant char * format, ...);
+int __gen_ocl_puts_stub(constant char * format);
 #endif
 #define printf __gen_ocl_printf_stub
+#define puts __gen_ocl_puts_stub
 
 #endif
diff --git a/backend/src/llvm/llvm_printf_parser.cpp b/backend/src/llvm/llvm_printf_parser.cpp
index 9632011..7800c01 100644
--- a/backend/src/llvm/llvm_printf_parser.cpp
+++ b/backend/src/llvm/llvm_printf_parser.cpp
@@ -552,7 +552,6 @@ error:
     return true;
   }
 
-
   bool PrintfParser::runOnFunction(llvm::Function &F)
   {
     bool changed = false;
@@ -583,6 +582,15 @@ error:
 
     builder = new IRBuilder<>(module->getContext());
 
+    llvm::GlobalValue* gFun = module->getNamedValue("printf");
+    if(gFun) {
+      gFun->setName("__gen_ocl_printf_stub");
+    }
+    llvm::GlobalValue* gFun2 = module->getNamedValue("puts");
+    if(gFun2 ) {
+      gFun2->setName("__gen_ocl_puts_stub");
+    }
+
     /* First find printfs and caculate all slots size of one loop. */
     for (llvm::Function::iterator B = F.begin(), BE = F.end(); B != BE; B++) {
       for (BasicBlock::iterator instI = B->begin(),
@@ -602,7 +610,7 @@ error:
         Value *Callee = call->getCalledValue();
         const std::string fnName = Callee->getName();
 
-        if (fnName != "__gen_ocl_printf_stub")
+        if (fnName != "__gen_ocl_printf_stub" && fnName != "__gen_ocl_puts_stub")
           continue;
 
         if (!parseOnePrintfInstruction(call, pInfo, sizeof_size)) {
-- 
1.9.1