v2: fix build using llvm 3.7

Signed-off-by: Jan Vesely <jan.ves...@rutgers.edu>
---
 .../state_trackers/clover/llvm/invocation.cpp      | 33 +++++++++-------------
 1 file changed, 14 insertions(+), 19 deletions(-)

diff --git a/src/gallium/state_trackers/clover/llvm/invocation.cpp 
b/src/gallium/state_trackers/clover/llvm/invocation.cpp
index db748b4..fa73406 100644
--- a/src/gallium/state_trackers/clover/llvm/invocation.cpp
+++ b/src/gallium/state_trackers/clover/llvm/invocation.cpp
@@ -276,12 +276,12 @@ namespace {
 #endif
    }
 
-   std::vector<llvm::Function *>
-   find_kernels(llvm::Module *mod) {
-      std::vector<llvm::Function *> kernels;
+   std::vector<const llvm::Function *>
+   find_kernels(const llvm::Module *mod) {
+      std::vector<const llvm::Function *> kernels;
 #if HAVE_LLVM >= 0x0309
-      auto &list = mod->getFunctionList();
-      for_each(list.begin(), list.end(), [&](llvm::Function &f){
+      const auto &list = mod->getFunctionList();
+      for_each(list.begin(), list.end(), [&](const llvm::Function &f){
          if (f.getMetadata("kernel_arg_type"))
            kernels.push_back(&f);
       });
@@ -293,7 +293,7 @@ namespace {
       // require that we return an error here, but there will be an error if
       // the user tries to pass this program to a clCreateKernel() call.
       if (!kernel_node) {
-         return std::vector<llvm::Function *>();
+         return kernels;
       }
 
       kernels.reserve(kernel_node->getNumOperands());
@@ -317,7 +317,7 @@ namespace {
       llvm::PassManager PM;
 #endif
 
-      const std::vector<llvm::Function *> kernels = find_kernels(mod);
+      const std::vector<const llvm::Function *> kernels = find_kernels(mod);
 
       // Add a function internalizer pass.
       //
@@ -343,10 +343,7 @@ namespace {
       };
 #else
       std::vector<const char*> export_list;
-      for (std::vector<llvm::Function *>::const_iterator I = kernels.begin(),
-                                                         E = kernels.end();
-                                                         I != E; ++I) {
-         llvm::Function *kernel = *I;
+      for (const llvm::Function *kernel : kernels) {
          export_list.push_back(kernel->getName().data());
       }
 #endif
@@ -618,7 +615,7 @@ namespace {
    }
 
    module
-   build_module_llvm(llvm::Module *mod,
+   build_module_llvm(const llvm::Module *mod,
                      clang::LangAS::Map& address_spaces) {
 
       module m;
@@ -632,7 +629,7 @@ namespace {
       bitcode_ostream.flush();
 #endif
 
-      const std::vector<llvm::Function *> kernels = find_kernels(mod);
+      const std::vector<const llvm::Function *> kernels = find_kernels(mod);
       for (unsigned i = 0; i < kernels.size(); ++i) {
          std::string kernel_name = kernels[i]->getName();
          std::vector<module::argument> args =
@@ -735,7 +732,7 @@ namespace {
 
    std::map<std::string, unsigned>
    get_kernel_offsets(std::vector<char> &code,
-                      const std::vector<llvm::Function *> &kernels,
+                      const std::vector<const llvm::Function *> &kernels,
                       std::string &r_log) {
 
       // One of the libelf implementations
@@ -786,9 +783,7 @@ namespace {
       // Determine the offsets for each kernel
       for (int i = 0; (symbol = gelf_getsym(symtab_data, i, &s)); i++) {
          char *name = elf_strptr(elf, symtab_header.sh_link, symbol->st_name);
-         for (std::vector<llvm::Function*>::const_iterator it = 
kernels.begin(),
-              e = kernels.end(); it != e; ++it) {
-            llvm::Function *f = *it;
+         for (const llvm::Function *f : kernels) {
             if (f->getName() == std::string(name))
                kernel_offsets[f->getName()] = symbol->st_value;
          }
@@ -799,11 +794,11 @@ namespace {
 
    module
    build_module_native(std::vector<char> &code,
-                       llvm::Module *mod,
+                       const llvm::Module *mod,
                        const clang::LangAS::Map &address_spaces,
                        std::string &r_log) {
 
-      const std::vector<llvm::Function *> kernels = find_kernels(mod);
+      const std::vector<const llvm::Function *> kernels = find_kernels(mod);
 
       std::map<std::string, unsigned> kernel_offsets =
             get_kernel_offsets(code, kernels, r_log);
-- 
2.7.4

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