From 97bfcddde0a0e827cb868b38c7da8d8692da6cce Mon Sep 17 00:00:00 2001
From: Tom Stellard <thomas.stellard@amd.com>
Date: Thu, 7 Mar 2013 16:51:08 -0500
Subject: r600g/llvm: Move llvm wrapper functions into the radeon directory

---
 src/gallium/drivers/radeon/Makefile.sources     |  3 +-
 src/gallium/drivers/radeon/radeon_llvm_util.cpp | 62 +++++++++++++++++++++++++
 src/gallium/drivers/radeon/radeon_llvm_util.h   | 20 ++++++++
 3 files changed, 84 insertions(+), 1 deletion(-)
 create mode 100644 src/gallium/drivers/radeon/radeon_llvm_util.cpp
 create mode 100644 src/gallium/drivers/radeon/radeon_llvm_util.h

(limited to 'src/gallium/drivers/radeon')

diff --git a/src/gallium/drivers/radeon/Makefile.sources b/src/gallium/drivers/radeon/Makefile.sources
index 39f9532fe40..aa327490f44 100644
--- a/src/gallium/drivers/radeon/Makefile.sources
+++ b/src/gallium/drivers/radeon/Makefile.sources
@@ -1,5 +1,6 @@
 CPP_FILES := \
-	radeon_llvm_emit.cpp
+	radeon_llvm_emit.cpp \
+	radeon_llvm_util.cpp
 
 C_FILES := \
 	radeon_setup_tgsi_llvm.c
diff --git a/src/gallium/drivers/radeon/radeon_llvm_util.cpp b/src/gallium/drivers/radeon/radeon_llvm_util.cpp
new file mode 100644
index 00000000000..22c6dc6f65c
--- /dev/null
+++ b/src/gallium/drivers/radeon/radeon_llvm_util.cpp
@@ -0,0 +1,62 @@
+#include <llvm/ADT/OwningPtr.h>
+#include <llvm/ADT/StringRef.h>
+#if HAVE_LLVM < 0x0303
+#include <llvm/LLVMContext.h>
+#else
+#include <llvm/IR/LLVMContext.h>
+#endif
+#include <llvm/PassManager.h>
+#include <llvm/Support/IRReader.h>
+#include <llvm/Support/MemoryBuffer.h>
+#include <llvm/Support/SourceMgr.h>
+#include <llvm/Transforms/IPO.h>
+
+#include "radeon_llvm_util.h"
+
+
+extern "C" LLVMModuleRef radeon_llvm_parse_bitcode(const unsigned char * bitcode, unsigned bitcode_len)
+{
+	llvm::OwningPtr<llvm::Module> M;
+	llvm::StringRef str((const char*)bitcode, bitcode_len);
+	llvm::MemoryBuffer*  buffer = llvm::MemoryBuffer::getMemBufferCopy(str);
+	llvm::SMDiagnostic Err;
+	M.reset(llvm::ParseIR(buffer, Err, llvm::getGlobalContext()));
+	return wrap(M.take());
+}
+
+extern "C" void radeon_llvm_strip_unused_kernels(LLVMModuleRef mod, const char *kernel_name)
+{
+	llvm::Module *M = llvm::unwrap(mod);
+	std::vector<const char *> export_list;
+	export_list.push_back(kernel_name);
+	llvm::PassManager PM;
+	PM.add(llvm::createInternalizePass(export_list));
+	PM.add(llvm::createGlobalDCEPass());
+	PM.run(*M);
+}
+
+extern "C" unsigned radeon_llvm_get_num_kernels(const unsigned char *bitcode,
+				unsigned bitcode_len)
+{
+	LLVMModuleRef mod = radeon_llvm_parse_bitcode(bitcode, bitcode_len);
+	llvm::Module *M = llvm::unwrap(mod);
+	const llvm::NamedMDNode *kernel_node
+				= M->getNamedMetadata("opencl.kernels");
+	unsigned kernel_count = kernel_node->getNumOperands();
+	delete M;
+	return kernel_count;
+}
+
+extern "C" LLVMModuleRef radeon_llvm_get_kernel_module(unsigned index,
+		const unsigned char *bitcode, unsigned bitcode_len)
+{
+	LLVMModuleRef mod = radeon_llvm_parse_bitcode(bitcode, bitcode_len);
+	llvm::Module *M = llvm::unwrap(mod);
+	const llvm::NamedMDNode *kernel_node =
+				M->getNamedMetadata("opencl.kernels");
+	const char* kernel_name = kernel_node->getOperand(index)->
+					getOperand(0)->getName().data();
+	radeon_llvm_strip_unused_kernels(mod, kernel_name);
+	return mod;
+
+}
diff --git a/src/gallium/drivers/radeon/radeon_llvm_util.h b/src/gallium/drivers/radeon/radeon_llvm_util.h
new file mode 100644
index 00000000000..a7dfa9baf56
--- /dev/null
+++ b/src/gallium/drivers/radeon/radeon_llvm_util.h
@@ -0,0 +1,20 @@
+#ifndef RADEON_LLVM_UTIL_H
+#define RADEON_LLVM_UTIL_H
+
+#include <llvm-c/Core.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+LLVMModuleRef radeon_llvm_parse_bitcode(const unsigned char * bitcode, unsigned bitcode_len);
+void radeon_llvm_strip_unused_kernels(LLVMModuleRef mod, const char *kernel_name);
+unsigned radeon_llvm_get_num_kernels(const unsigned char *bitcode, unsigned bitcode_len);
+LLVMModuleRef radeon_llvm_get_kernel_module(unsigned index,
+			const unsigned char *bitcode, unsigned bitcode_len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
-- 
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