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| author | Andres Freund <andres@anarazel.de> | 2018-03-22 11:07:55 -0700 |
|---|---|---|
| committer | Andres Freund <andres@anarazel.de> | 2018-03-22 11:07:55 -0700 |
| commit | 250bca7fc145b143d5e9aeeca66f0bb36cf4d5ef (patch) | |
| tree | 72035cd100df961412a1eb6fed0dbb3345c3e001 /src/backend/jit | |
| parent | b96d550eb03cfdb000def70912ec840dbe7f67da (diff) | |
| download | postgresql-250bca7fc145b143d5e9aeeca66f0bb36cf4d5ef.tar.gz postgresql-250bca7fc145b143d5e9aeeca66f0bb36cf4d5ef.zip | |
Debugging and profiling support for LLVM JIT provider.
This currently requires patches to the LLVM codebase to be
effective (submitted upstream), the GUCs are available without those
patches however.
Author: Andres Freund
Discussion: https://postgr.es/m/20170901064131.tazjxwus3k2w3ybh@alap3.anarazel.de
Diffstat (limited to 'src/backend/jit')
| -rw-r--r-- | src/backend/jit/jit.c | 2 | ||||
| -rw-r--r-- | src/backend/jit/llvm/llvmjit.c | 36 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/backend/jit/jit.c b/src/backend/jit/jit.c index 300b9ff73ad..c17df1c985e 100644 --- a/src/backend/jit/jit.c +++ b/src/backend/jit/jit.c @@ -33,7 +33,9 @@ /* GUCs */ bool jit_enabled = true; char *jit_provider = "llvmjit"; +bool jit_debugging_support = false; bool jit_dump_bitcode = false; +bool jit_profiling_support = false; static JitProviderCallbacks provider; static bool provider_successfully_loaded = false; diff --git a/src/backend/jit/llvm/llvmjit.c b/src/backend/jit/llvm/llvmjit.c index 6b07c143b2b..8cf8aaaa3a1 100644 --- a/src/backend/jit/llvm/llvmjit.c +++ b/src/backend/jit/llvm/llvmjit.c @@ -541,6 +541,21 @@ llvm_session_initialize(void) llvm_opt0_orc = LLVMOrcCreateInstance(llvm_opt0_targetmachine); llvm_opt3_orc = LLVMOrcCreateInstance(llvm_opt3_targetmachine); +#if defined(HAVE_DECL_LLVMORCREGISTERGDB) && HAVE_DECL_LLVMORCREGISTERGDB + if (jit_debugging_support) + { + LLVMOrcRegisterGDB(llvm_opt0_orc); + LLVMOrcRegisterGDB(llvm_opt3_orc); + } +#endif +#if defined(HAVE_DECL_LLVMORCREGISTERPERF) && HAVE_DECL_LLVMORCREGISTERPERF + if (jit_profiling_support) + { + LLVMOrcRegisterPerf(llvm_opt0_orc); + LLVMOrcRegisterPerf(llvm_opt3_orc); + } +#endif + before_shmem_exit(llvm_shutdown, 0); llvm_session_initialized = true; @@ -551,6 +566,27 @@ llvm_session_initialize(void) static void llvm_shutdown(int code, Datum arg) { + /* unregister profiling support, needs to be flushed to be useful */ + + if (llvm_opt3_orc) + { +#if defined(HAVE_DECL_LLVMORCREGISTERPERF) && HAVE_DECL_LLVMORCREGISTERPERF + if (jit_profiling_support) + LLVMOrcUnregisterPerf(llvm_opt3_orc); +#endif + LLVMOrcDisposeInstance(llvm_opt3_orc); + llvm_opt3_orc = NULL; + } + + if (llvm_opt0_orc) + { +#if defined(HAVE_DECL_LLVMORCREGISTERPERF) && HAVE_DECL_LLVMORCREGISTERPERF + if (jit_profiling_support) + LLVMOrcUnregisterPerf(llvm_opt0_orc); +#endif + LLVMOrcDisposeInstance(llvm_opt0_orc); + llvm_opt0_orc = NULL; + } } /* helper for llvm_create_types */ |