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Track LLVM 15 changes.

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Per https://llvm.org/docs/OpaquePointers.html, support for non-opaque
pointers still exists and we can request that on our context.  We have
until LLVM 16 to move to opaque pointers, a much larger change.

Back-patch to 11, where LLVM support arrived.

Author: Thomas Munro <thomas.munro@gmail.com>
Author: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CAMHz58Sf_xncdyqsekoVsNeKcruKootLtVH6cYXVhhUR1oKPCg%40mail.gmail.com
This commit is contained in:
Thomas Munro
2022-10-19 22:18:54 +13:00
parent 5d2a47a292
commit af64846e1c
3 changed files with 110 additions and 0 deletions
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18
src/backend/jit/llvm/llvmjit.c
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@ -798,6 +798,16 @@ llvm_session_initialize(void)
LLVMInitializeNativeAsmPrinter();
LLVMInitializeNativeAsmParser();
/*
* When targeting an LLVM version with opaque pointers enabled by
* default, turn them off for the context we build our code in. We don't
* need to do so for other contexts (e.g. llvm_ts_context). Once the IR is
* generated, it carries the necessary information.
*/
#if LLVM_VERSION_MAJOR > 14
LLVMContextSetOpaquePointers(LLVMGetGlobalContext(), false);
#endif
/*
* Synchronize types early, as that also includes inferring the target
* triple.
@ -1112,7 +1122,11 @@ llvm_resolve_symbols(LLVMOrcDefinitionGeneratorRef GeneratorObj, void *Ctx,
LLVMOrcJITDylibRef JD, LLVMOrcJITDylibLookupFlags JDLookupFlags,
LLVMOrcCLookupSet LookupSet, size_t LookupSetSize)
{
#if LLVM_VERSION_MAJOR > 14
LLVMOrcCSymbolMapPairs symbols = palloc0(sizeof(LLVMOrcCSymbolMapPair) * LookupSetSize);
#else
LLVMOrcCSymbolMapPairs symbols = palloc0(sizeof(LLVMJITCSymbolMapPair) * LookupSetSize);
#endif
LLVMErrorRef error;
LLVMOrcMaterializationUnitRef mu;
@ -1230,7 +1244,11 @@ llvm_create_jit_instance(LLVMTargetMachineRef tm)
* Symbol resolution support for "special" functions, e.g. a call into an
* SQL callable function.
*/
#if LLVM_VERSION_MAJOR > 14
ref_gen = LLVMOrcCreateCustomCAPIDefinitionGenerator(llvm_resolve_symbols, NULL, NULL);
#else
ref_gen = LLVMOrcCreateCustomCAPIDefinitionGenerator(llvm_resolve_symbols, NULL);
#endif
LLVMOrcJITDylibAddGenerator(LLVMOrcLLJITGetMainJITDylib(lljit), ref_gen);
return lljit;