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

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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).



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@191804 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Filip Pizlo
2013-10-02 00:59:25 +00:00
parent 2b53089bd0
commit 6eb43d2956
16 changed files with 97 additions and 70 deletions
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10
unittests/ExecutionEngine/JIT/JITMemoryManagerTest.cpp
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@ -281,11 +281,11 @@ TEST(JITMemoryManagerTest, TestManyStubs) {
TEST(JITMemoryManagerTest, AllocateSection) {
OwningPtr<JITMemoryManager> MemMgr(
JITMemoryManager::CreateDefaultMemManager());
uint8_t *code1 = MemMgr->allocateCodeSection(256, 0, 1);
uint8_t *data1 = MemMgr->allocateDataSection(256, 16, 2, true);
uint8_t *code2 = MemMgr->allocateCodeSection(257, 32, 3);
uint8_t *data2 = MemMgr->allocateDataSection(256, 64, 4, false);
uint8_t *code3 = MemMgr->allocateCodeSection(258, 64, 5);
uint8_t *code1 = MemMgr->allocateCodeSection(256, 0, 1, StringRef());
uint8_t *data1 = MemMgr->allocateDataSection(256, 16, 2, StringRef(), true);
uint8_t *code2 = MemMgr->allocateCodeSection(257, 32, 3, StringRef());
uint8_t *data2 = MemMgr->allocateDataSection(256, 64, 4, StringRef(), false);
uint8_t *code3 = MemMgr->allocateCodeSection(258, 64, 5, StringRef());
EXPECT_NE((uint8_t*)0, code1);
EXPECT_NE((uint8_t*)0, code2);