This threads SectionName through the allocateCodeSection/allocateDataSection APIs, both in C++ and C land.

It's useful for the memory managers that are allocating a section to know what the name of the section is.  
At a minimum, this is useful for low-level debugging - it's customary for JITs to be able to tell you what 
memory they allocated, and as part of any such dump, they should be able to tell you some meta-data about 
what each allocation is for.  This allows clients that supply their own memory managers to do this.  
Additionally, we also envision the SectionName being useful for passing meta-data from within LLVM to an LLVM 
client.

This changes both the C and C++ APIs, and all of the clients of those APIs within LLVM.  I'm assuming that 
it's safe to change the C++ API because that API is allowed to change.  I'm assuming that it's safe to change 
the C API because we haven't shipped the API in a release yet (LLVM 3.3 doesn't include the MCJIT memory 
management C API).

llvm-svn: 191804

1 files changed, 5 insertions, 4 deletions

diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
index 89c04dd007b..077442d8dfb 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyld.cpp
@@ -182,8 +182,8 @@ void RuntimeDyldImpl::emitCommonSymbols(ObjectImage &Obj,
                                         SymbolTableMap &SymbolTable) {
   // Allocate memory for the section
   unsigned SectionID = Sections.size();
-  uint8_t *Addr = MemMgr->allocateDataSection(TotalSize, sizeof(void*),
-                                              SectionID, false);
+  uint8_t *Addr = MemMgr->allocateDataSection(
+    TotalSize, sizeof(void*), SectionID, StringRef(), false);
   if (!Addr)
     report_fatal_error("Unable to allocate memory for common symbols!");
   uint64_t Offset = 0;
@@ -278,8 +278,9 @@ unsigned RuntimeDyldImpl::emitSection(ObjectImage &Obj,
   if (IsRequired) {
     Allocate = DataSize + StubBufSize;
     Addr = IsCode
-      ? MemMgr->allocateCodeSection(Allocate, Alignment, SectionID)
-      : MemMgr->allocateDataSection(Allocate, Alignment, SectionID, IsReadOnly);
+      ? MemMgr->allocateCodeSection(Allocate, Alignment, SectionID, Name)
+      : MemMgr->allocateDataSection(Allocate, Alignment, SectionID, Name,
+                                    IsReadOnly);
     if (!Addr)
       report_fatal_error("Unable to allocate section memory!");