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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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16
unittests/ExecutionEngine/JIT/JITTest.cpp
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@ -135,13 +135,17 @@ public:
EndFunctionBodyCall(F, FunctionStart, FunctionEnd));
Base->endFunctionBody(F, FunctionStart, FunctionEnd);
}
virtual uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID, bool IsReadOnly) {
return Base->allocateDataSection(Size, Alignment, SectionID, IsReadOnly);
virtual uint8_t *allocateDataSection(
uintptr_t Size, unsigned Alignment, unsigned SectionID,
StringRef SectionName, bool IsReadOnly) {
return Base->allocateDataSection(
Size, Alignment, SectionID, SectionName, IsReadOnly);
}
virtual uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID) {
return Base->allocateCodeSection(Size, Alignment, SectionID);
virtual uint8_t *allocateCodeSection(
uintptr_t Size, unsigned Alignment, unsigned SectionID,
StringRef SectionName) {
return Base->allocateCodeSection(
Size, Alignment, SectionID, SectionName);
}
virtual bool finalizeMemory(std::string *ErrMsg) { return false; }
virtual uint8_t *allocateSpace(intptr_t Size, unsigned Alignment) {