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Fix LLVM related headers to compile standalone (to fix cpluspluscheck).

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Previously llvmjit.h #error'ed when USE_LLVM was not defined, to
prevent it from being included from code not having #ifdef USE_LLVM
guards - but that's not actually that useful after, during the
development of JIT support, LLVM related code was moved into a
separately compiled .so.  Having that #error means cpluspluscheck
doesn't work when llvm support isn't enabled, which isn't great.

Similarly add USE_LLVM guards to llvmjit_emit.h, and additionally make
sure it compiles standalone.

Per complaint from Tom Lane.

Author: Andres Freund
Discussion: https://postgr.es/m/19808.1548692361@sss.pgh.pa.us
Backpatch: 11, where JIT support was added
This commit is contained in:
Andres Freund
2019-01-28 18:05:52 -08:00
parent 453be7d4dd
commit 6a5c0bb6ab
2 changed files with 15 additions and 3 deletions
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9
src/include/jit/llvmjit.h
View File

@ -11,9 +11,11 @@
#ifndef LLVMJIT_H
#define LLVMJIT_H
#ifndef USE_LLVM
#error "llvmjit.h should only be included by code dealing with llvm"
#endif
/*
* To avoid breaking cpluspluscheck, allow including the file even when LLVM
* is not available.
*/
#ifdef USE_LLVM
#include <llvm-c/Types.h>
@ -135,4 +137,5 @@ extern char *LLVMGetHostCPUFeatures(void);
} /* extern "C" */
#endif
#endif /* USE_LLVM */
#endif /* LLVMJIT_H */

9
src/include/jit/llvmjit_emit.h
View File

@ -9,9 +9,16 @@
#ifndef LLVMJIT_EMIT_H
#define LLVMJIT_EMIT_H
/*
* To avoid breaking cpluspluscheck, allow including the file even when LLVM
* is not available.
*/
#ifdef USE_LLVM
#include <llvm-c/Core.h>
#include "jit/llvmjit.h"
/*
* Emit a non-LLVM pointer as an LLVM constant.
@ -208,4 +215,6 @@ l_mcxt_switch(LLVMModuleRef mod, LLVMBuilderRef b, LLVMValueRef nc)
return ret;
}
#endif /* USE_LLVM */
#endif