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jit: Require at least LLVM 10.

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Remove support for older LLVM versions.  The default on common software
distributions will be at least LLVM 10 when PostgreSQL 17 ships.

Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Discussion: https://postgr.es/m/CA%2BhUKGLhNs5geZaVNj2EJ79Dx9W8fyWUU3HxcpZy55sMGcY%3DiA%40mail.gmail.com
pull/154/head
Thomas Munro 1 year ago
parent 729439607a
commit 820b5af73d
11 changed files with 17 additions and 243 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
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  1. 10
      config/llvm.m4
  2. 43
      configure
  3. 4
      doc/src/sgml/installation.sgml
  4. 2
      meson.build
  5. 57
      src/backend/jit/llvm/llvmjit.c
  6. 10
      src/backend/jit/llvm/llvmjit_error.cpp
  7. 6
      src/backend/jit/llvm/llvmjit_expr.c
  8. 38
      src/backend/jit/llvm/llvmjit_inline.cpp
  9. 61
      src/backend/jit/llvm/llvmjit_wrap.cpp
  10. 17
      src/include/jit/llvmjit.h
  11. 12
      src/include/pg_config.h.in

10
config/llvm.m4
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@ -13,7 +13,7 @@ AC_DEFUN([PGAC_LLVM_SUPPORT],
AC_REQUIRE([AC_PROG_AWK])
AC_ARG_VAR(LLVM_CONFIG, [path to llvm-config command])
PGAC_PATH_PROGS(LLVM_CONFIG, llvm-config llvm-config-7 llvm-config-6.0 llvm-config-5.0 llvm-config-4.0 llvm-config-3.9)
PGAC_PATH_PROGS(LLVM_CONFIG, llvm-config llvm-config-17 llvm-config-16 llvm-config-15 llvm-config-14 llvm-config-13 llvm-config-12 llvm-config-11 llvm-config-10)
# no point continuing if llvm wasn't found
if test -z "$LLVM_CONFIG"; then
@ -25,14 +25,14 @@ AC_DEFUN([PGAC_LLVM_SUPPORT],
AC_MSG_ERROR([$LLVM_CONFIG does not work])
fi
# and whether the version is supported
if echo $pgac_llvm_version | $AWK -F '.' '{ if ([$]1 >= 4 || ([$]1 == 3 && [$]2 >= 9)) exit 1; else exit 0;}';then
AC_MSG_ERROR([$LLVM_CONFIG version is $pgac_llvm_version but at least 3.9 is required])
if echo $pgac_llvm_version | $AWK -F '.' '{ if ([$]1 >= 10) exit 1; else exit 0;}';then
AC_MSG_ERROR([$LLVM_CONFIG version is $pgac_llvm_version but at least 10 is required])
fi
AC_MSG_NOTICE([using llvm $pgac_llvm_version])
# need clang to create some bitcode files
AC_ARG_VAR(CLANG, [path to clang compiler to generate bitcode])
PGAC_PATH_PROGS(CLANG, clang clang-7 clang-6.0 clang-5.0 clang-4.0 clang-3.9)
PGAC_PATH_PROGS(CLANG, clang clang-17 clang-16 clang-15 clang-14 clang-13 clang-12 clang-11 clang-10)
if test -z "$CLANG"; then
AC_MSG_ERROR([clang not found, but required when compiling --with-llvm, specify with CLANG=])
fi
@ -115,8 +115,6 @@ AC_DEFUN([PGAC_CHECK_LLVM_FUNCTIONS],
# Check which functionality is present
SAVE_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
AC_CHECK_DECLS([LLVMOrcGetSymbolAddressIn], [], [], [[#include <llvm-c/OrcBindings.h>]])
AC_CHECK_DECLS([LLVMGetHostCPUName, LLVMGetHostCPUFeatures], [], [], [[#include <llvm-c/TargetMachine.h>]])
AC_CHECK_DECLS([LLVMCreateGDBRegistrationListener, LLVMCreatePerfJITEventListener], [], [], [[#include <llvm-c/ExecutionEngine.h>]])
CPPFLAGS="$SAVE_CPPFLAGS"
])# PGAC_CHECK_LLVM_FUNCTIONS

43
configure vendored
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@ -5090,7 +5090,7 @@ if test "$with_llvm" = yes; then :
if test -z "$LLVM_CONFIG"; then
for ac_prog in llvm-config llvm-config-7 llvm-config-6.0 llvm-config-5.0 llvm-config-4.0 llvm-config-3.9
for ac_prog in llvm-config llvm-config-17 llvm-config-16 llvm-config-15 llvm-config-14 llvm-config-13 llvm-config-12 llvm-config-11 llvm-config-10
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
@ -5154,8 +5154,8 @@ fi
as_fn_error $? "$LLVM_CONFIG does not work" "$LINENO" 5
fi
# and whether the version is supported
if echo $pgac_llvm_version | $AWK -F '.' '{ if ($1 >= 4 || ($1 == 3 && $2 >= 9)) exit 1; else exit 0;}';then
as_fn_error $? "$LLVM_CONFIG version is $pgac_llvm_version but at least 3.9 is required" "$LINENO" 5
if echo $pgac_llvm_version | $AWK -F '.' '{ if ($1 >= 10) exit 1; else exit 0;}';then
as_fn_error $? "$LLVM_CONFIG version is $pgac_llvm_version but at least 10 is required" "$LINENO" 5
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: using llvm $pgac_llvm_version" >&5
$as_echo "$as_me: using llvm $pgac_llvm_version" >&6;}
@ -5163,7 +5163,7 @@ $as_echo "$as_me: using llvm $pgac_llvm_version" >&6;}
# need clang to create some bitcode files
if test -z "$CLANG"; then
for ac_prog in clang clang-7 clang-6.0 clang-5.0 clang-4.0 clang-3.9
for ac_prog in clang clang-17 clang-16 clang-15 clang-14 clang-13 clang-12 clang-11 clang-10
do
# Extract the first word of "$ac_prog", so it can be a program name with args.
set dummy $ac_prog; ac_word=$2
@ -16546,41 +16546,6 @@ if test "$with_llvm" = yes; then
# Check which functionality is present
SAVE_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $LLVM_CPPFLAGS"
ac_fn_c_check_decl "$LINENO" "LLVMOrcGetSymbolAddressIn" "ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" "#include <llvm-c/OrcBindings.h>
"
if test "x$ac_cv_have_decl_LLVMOrcGetSymbolAddressIn" = xyes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN $ac_have_decl
_ACEOF
ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUName" "ac_cv_have_decl_LLVMGetHostCPUName" "#include <llvm-c/TargetMachine.h>
"
if test "x$ac_cv_have_decl_LLVMGetHostCPUName" = xyes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_LLVMGETHOSTCPUNAME $ac_have_decl
_ACEOF
ac_fn_c_check_decl "$LINENO" "LLVMGetHostCPUFeatures" "ac_cv_have_decl_LLVMGetHostCPUFeatures" "#include <llvm-c/TargetMachine.h>
"
if test "x$ac_cv_have_decl_LLVMGetHostCPUFeatures" = xyes; then :
ac_have_decl=1
else
ac_have_decl=0
fi
cat >>confdefs.h <<_ACEOF
#define HAVE_DECL_LLVMGETHOSTCPUFEATURES $ac_have_decl
_ACEOF
ac_fn_c_check_decl "$LINENO" "LLVMCreateGDBRegistrationListener" "ac_cv_have_decl_LLVMCreateGDBRegistrationListener" "#include <llvm-c/ExecutionEngine.h>
"
if test "x$ac_cv_have_decl_LLVMCreateGDBRegistrationListener" = xyes; then :

4
doc/src/sgml/installation.sgml
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@ -936,7 +936,7 @@ build-postgresql:
<acronym>JIT</acronym> compilation (see <xref linkend="jit"/>). This
requires the <productname>LLVM</productname> library to be installed.
The minimum required version of <productname>LLVM</productname> is
currently 3.9.
currently 10.
</para>
<para>
<command>llvm-config</command><indexterm><primary>llvm-config</primary></indexterm>
@ -2424,7 +2424,7 @@ ninja install
<acronym>JIT</acronym> compilation (see <xref linkend="jit"/>).
This requires the <productname>LLVM</productname> library to be
installed. The minimum required version of
<productname>LLVM</productname> is currently 3.9. Disabled by
<productname>LLVM</productname> is currently 10. Disabled by
default.
</para>

2
meson.build
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@ -757,7 +757,7 @@ endif
llvmopt = get_option('llvm')
llvm = not_found_dep
if add_languages('cpp', required: llvmopt, native: false)
llvm = dependency('llvm', version: '>=3.9', method: 'config-tool', required: llvmopt)
llvm = dependency('llvm', version: '>=10', method: 'config-tool', required: llvmopt)
if llvm.found()

57
src/backend/jit/llvm/llvmjit.c
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@ -34,10 +34,8 @@
#include <llvm-c/Transforms/IPO.h>
#include <llvm-c/Transforms/PassManagerBuilder.h>
#include <llvm-c/Transforms/Scalar.h>
#if LLVM_VERSION_MAJOR > 6
#include <llvm-c/Transforms/Utils.h>
#endif
#endif
#include "jit/llvmjit.h"
#include "jit/llvmjit_emit.h"
@ -381,10 +379,7 @@ llvm_expand_funcname(struct LLVMJitContext *context, const char *basename)
void *
llvm_get_function(LLVMJitContext *context, const char *funcname)
{
#if LLVM_VERSION_MAJOR > 11 || \
defined(HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN) && HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN
ListCell *lc;
#endif
llvm_assert_in_fatal_section();
@ -432,7 +427,7 @@ llvm_get_function(LLVMJitContext *context, const char *funcname)
if (addr)
return (void *) (uintptr_t) addr;
}
#elif defined(HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN) && HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN
#else
foreach(lc, context->handles)
{
LLVMOrcTargetAddress addr;
@ -444,28 +439,6 @@ llvm_get_function(LLVMJitContext *context, const char *funcname)
if (addr)
return (void *) (uintptr_t) addr;
}
#elif LLVM_VERSION_MAJOR < 5
{
LLVMOrcTargetAddress addr;
if ((addr = LLVMOrcGetSymbolAddress(llvm_opt0_orc, funcname)))
return (void *) (uintptr_t) addr;
if ((addr = LLVMOrcGetSymbolAddress(llvm_opt3_orc, funcname)))
return (void *) (uintptr_t) addr;
}
#else
{
LLVMOrcTargetAddress addr;
if (LLVMOrcGetSymbolAddress(llvm_opt0_orc, &addr, funcname))
elog(ERROR, "failed to look up symbol \"%s\"", funcname);
if (addr)
return (void *) (uintptr_t) addr;
if (LLVMOrcGetSymbolAddress(llvm_opt3_orc, &addr, funcname))
elog(ERROR, "failed to look up symbol \"%s\"", funcname);
if (addr)
return (void *) (uintptr_t) addr;
}
#endif
elog(ERROR, "failed to JIT: %s", funcname);
@ -553,12 +526,8 @@ llvm_copy_attributes_at_index(LLVMValueRef v_from, LLVMValueRef v_to, uint32 ind
int num_attributes;
LLVMAttributeRef *attrs;
num_attributes = LLVMGetAttributeCountAtIndexPG(v_from, index);
num_attributes = LLVMGetAttributeCountAtIndex(v_from, index);
/*
* Not just for efficiency: LLVM <= 3.9 crashes when
* LLVMGetAttributesAtIndex() is called for an index with 0 attributes.
*/
if (num_attributes == 0)
return;
@ -852,7 +821,7 @@ llvm_compile_module(LLVMJitContext *context)
/* LLVMOrcLLJITAddLLVMIRModuleWithRT takes ownership of the module */
}
#elif LLVM_VERSION_MAJOR > 6
#else
{
handle->stack = compile_orc;
if (LLVMOrcAddEagerlyCompiledIR(compile_orc, &handle->orc_handle, context->module,
@ -861,26 +830,6 @@ llvm_compile_module(LLVMJitContext *context)
/* LLVMOrcAddEagerlyCompiledIR takes ownership of the module */
}
#elif LLVM_VERSION_MAJOR > 4
{
LLVMSharedModuleRef smod;
smod = LLVMOrcMakeSharedModule(context->module);
handle->stack = compile_orc;
if (LLVMOrcAddEagerlyCompiledIR(compile_orc, &handle->orc_handle, smod,
llvm_resolve_symbol, NULL))
elog(ERROR, "failed to JIT module");
LLVMOrcDisposeSharedModuleRef(smod);
}
#else /* LLVM 4.0 and 3.9 */
{
handle->stack = compile_orc;
handle->orc_handle = LLVMOrcAddEagerlyCompiledIR(compile_orc, context->module,
llvm_resolve_symbol, NULL);
LLVMDisposeModule(context->module);
}
#endif
INSTR_TIME_SET_CURRENT(endtime);

10
src/backend/jit/llvm/llvmjit_error.cpp
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@ -29,12 +29,10 @@ static int fatal_new_handler_depth = 0;
static std::new_handler old_new_handler = NULL;
static void fatal_system_new_handler(void);
#if LLVM_VERSION_MAJOR > 4
static void fatal_llvm_new_handler(void *user_data, const char *reason, bool gen_crash_diag);
#if LLVM_VERSION_MAJOR < 14
static void fatal_llvm_new_handler(void *user_data, const std::string& reason, bool gen_crash_diag);
#endif
#endif
static void fatal_llvm_error_handler(void *user_data, const char *reason, bool gen_crash_diag);
#if LLVM_VERSION_MAJOR < 14
static void fatal_llvm_error_handler(void *user_data, const std::string& reason, bool gen_crash_diag);
@ -65,9 +63,7 @@ llvm_enter_fatal_on_oom(void)
if (fatal_new_handler_depth == 0)
{
old_new_handler = std::set_new_handler(fatal_system_new_handler);
#if LLVM_VERSION_MAJOR > 4
llvm::install_bad_alloc_error_handler(fatal_llvm_new_handler);
#endif
llvm::install_fatal_error_handler(fatal_llvm_error_handler);
}
fatal_new_handler_depth++;
@ -83,9 +79,7 @@ llvm_leave_fatal_on_oom(void)
if (fatal_new_handler_depth == 0)
{
std::set_new_handler(old_new_handler);
#if LLVM_VERSION_MAJOR > 4
llvm::remove_bad_alloc_error_handler();
#endif
llvm::remove_fatal_error_handler();
}
}
@ -110,9 +104,7 @@ llvm_reset_after_error(void)
if (fatal_new_handler_depth != 0)
{
std::set_new_handler(old_new_handler);
#if LLVM_VERSION_MAJOR > 4
llvm::remove_bad_alloc_error_handler();
#endif
llvm::remove_fatal_error_handler();
}
fatal_new_handler_depth = 0;
@ -133,7 +125,6 @@ fatal_system_new_handler(void)
errdetail("while in LLVM")));
}
#if LLVM_VERSION_MAJOR > 4
static void
fatal_llvm_new_handler(void *user_data,
const char *reason,
@ -153,7 +144,6 @@ fatal_llvm_new_handler(void *user_data,
fatal_llvm_new_handler(user_data, reason.c_str(), gen_crash_diag);
}
#endif
#endif
static void
fatal_llvm_error_handler(void *user_data,

6
src/backend/jit/llvm/llvmjit_expr.c
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@ -2650,12 +2650,8 @@ create_LifetimeEnd(LLVMModuleRef mod)
LLVMTypeRef param_types[2];
LLVMContextRef lc;
/* LLVM 5+ has a variadic pointer argument */
#if LLVM_VERSION_MAJOR < 5
const char *nm = "llvm.lifetime.end";
#else
/* variadic pointer argument */
const char *nm = "llvm.lifetime.end.p0i8";
#endif
fn = LLVMGetNamedFunction(mod, nm);
if (fn)

38
src/backend/jit/llvm/llvmjit_inline.cpp
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@ -49,12 +49,7 @@ extern "C"
#include <llvm/ADT/StringSet.h>
#include <llvm/ADT/StringMap.h>
#include <llvm/Analysis/ModuleSummaryAnalysis.h>
#if LLVM_VERSION_MAJOR > 3
#include <llvm/Bitcode/BitcodeReader.h>
#else
#include <llvm/Bitcode/ReaderWriter.h>
#include <llvm/Support/Error.h>
#endif
#include <llvm/IR/Attributes.h>
#include <llvm/IR/DebugInfo.h>
#include <llvm/IR/IntrinsicInst.h>
@ -267,14 +262,12 @@ llvm_build_inline_plan(LLVMContextRef lc, llvm::Module *mod)
fs = llvm::cast<llvm::FunctionSummary>(gvs);
#if LLVM_VERSION_MAJOR > 3
if (gvs->notEligibleToImport())
{
ilog(DEBUG1, "ineligibile to import %s due to summary",
symbolName.data());
continue;
}
#endif
if ((int) fs->instCount() > inlineState.costLimit)
{
@ -458,16 +451,9 @@ llvm_execute_inline_plan(llvm::Module *mod, ImportMapTy *globalsToInline)
}
#if LLVM_VERSION_MAJOR > 4
#define IRMOVE_PARAMS , /*IsPerformingImport=*/false
#elif LLVM_VERSION_MAJOR > 3
#define IRMOVE_PARAMS , /*LinkModuleInlineAsm=*/false, /*IsPerformingImport=*/false
#else
#define IRMOVE_PARAMS
#endif
if (Mover.move(std::move(importMod), GlobalsToImport.getArrayRef(),
[](llvm::GlobalValue &, llvm::IRMover::ValueAdder) {}
IRMOVE_PARAMS))
[](llvm::GlobalValue &, llvm::IRMover::ValueAdder) {},
/*IsPerformingImport=*/false))
elog(FATAL, "function import failed with linker error");
}
}
@ -793,7 +779,6 @@ llvm_load_summary(llvm::StringRef path)
{
llvm::MemoryBufferRef ref(*MBOrErr.get().get());
#if LLVM_VERSION_MAJOR > 3
llvm::Expected<std::unique_ptr<llvm::ModuleSummaryIndex> > IndexOrErr =
llvm::getModuleSummaryIndex(ref);
if (IndexOrErr)
@ -801,15 +786,6 @@ llvm_load_summary(llvm::StringRef path)
elog(FATAL, "failed to load summary \"%s\": %s",
path.data(),
toString(IndexOrErr.takeError()).c_str());
#else
llvm::ErrorOr<std::unique_ptr<llvm::ModuleSummaryIndex> > IndexOrErr =
llvm::getModuleSummaryIndex(ref, [](const llvm::DiagnosticInfo &) {});
if (IndexOrErr)
return std::move(IndexOrErr.get());
elog(FATAL, "failed to load summary \"%s\": %s",
path.data(),
IndexOrErr.getError().message().c_str());
#endif
}
return nullptr;
}
@ -856,22 +832,12 @@ summaries_for_guid(const InlineSearchPath& path, llvm::GlobalValue::GUID guid)
for (auto index : path)
{
#if LLVM_VERSION_MAJOR > 4
llvm::ValueInfo funcVI = index->getValueInfo(guid);
/* if index doesn't know function, we don't have a body, continue */
if (funcVI)
for (auto &gv : funcVI.getSummaryList())
matches.push_back(gv.get());
#else
const llvm::const_gvsummary_iterator &I =
index->findGlobalValueSummaryList(guid);
if (I != index->end())
{
for (auto &gv : I->second)
matches.push_back(gv.get());
}
#endif
}
return matches;

61
src/backend/jit/llvm/llvmjit_wrap.cpp
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@ -21,16 +21,7 @@ extern "C"
/* Avoid macro clash with LLVM's C++ headers */
#undef Min
#include <llvm/IR/Attributes.h>
#include <llvm/IR/Function.h>
#if LLVM_VERSION_MAJOR < 17
#include <llvm/MC/SubtargetFeature.h>
#endif
#if LLVM_VERSION_MAJOR > 16
#include <llvm/TargetParser/Host.h>
#else
#include <llvm/Support/Host.h>
#endif
#include "jit/llvmjit.h"
@ -38,50 +29,6 @@ extern "C"
/*
* C-API extensions.
*/
#if defined(HAVE_DECL_LLVMGETHOSTCPUNAME) && !HAVE_DECL_LLVMGETHOSTCPUNAME
char *LLVMGetHostCPUName(void) {
return strdup(llvm::sys::getHostCPUName().data());
}
#endif
#if defined(HAVE_DECL_LLVMGETHOSTCPUFEATURES) && !HAVE_DECL_LLVMGETHOSTCPUFEATURES
char *LLVMGetHostCPUFeatures(void) {
llvm::SubtargetFeatures Features;
llvm::StringMap<bool> HostFeatures;
if (llvm::sys::getHostCPUFeatures(HostFeatures))
for (auto &F : HostFeatures)
Features.AddFeature(F.first(), F.second);
return strdup(Features.getString().c_str());
}
#endif
/*
* Like LLVM's LLVMGetAttributeCountAtIndex(), works around a bug in LLVM 3.9.
*
* In LLVM <= 3.9, LLVMGetAttributeCountAtIndex() segfaults if there are no
* attributes at an index (fixed in LLVM commit ce9bb1097dc2).
*/
unsigned
LLVMGetAttributeCountAtIndexPG(LLVMValueRef F, uint32 Idx)
{
/*
* This is more expensive, so only do when using a problematic LLVM
* version.
*/
#if LLVM_VERSION_MAJOR < 4
if (!llvm::unwrap<llvm::Function>(F)->getAttributes().hasAttributes(Idx))
return 0;
#endif
/*
* There is no nice public API to determine the count nicely, so just
* always fall back to LLVM's C API.
*/
return LLVMGetAttributeCountAtIndex(F, Idx);
}
LLVMTypeRef
LLVMGetFunctionReturnType(LLVMValueRef r)
@ -94,11 +41,3 @@ LLVMGetFunctionType(LLVMValueRef r)
{
return llvm::wrap(llvm::unwrap<llvm::Function>(r)->getFunctionType());
}
#if LLVM_VERSION_MAJOR < 8
LLVMTypeRef
LLVMGlobalGetValueType(LLVMValueRef g)
{
return llvm::wrap(llvm::unwrap<llvm::GlobalValue>(g)->getValueType());
}
#endif

17
src/include/jit/llvmjit.h
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@ -130,26 +130,9 @@ extern LLVMValueRef slot_compile_deform(struct LLVMJitContext *context, TupleDes
* Error handling related functions.
****************************************************************************
*/
#if defined(HAVE_DECL_LLVMGETHOSTCPUNAME) && !HAVE_DECL_LLVMGETHOSTCPUNAME
/** Get the host CPU as a string. The result needs to be disposed with
LLVMDisposeMessage. */
extern char *LLVMGetHostCPUName(void);
#endif
#if defined(HAVE_DECL_LLVMGETHOSTCPUFEATURES) && !HAVE_DECL_LLVMGETHOSTCPUFEATURES
/** Get the host CPU features as a string. The result needs to be disposed
with LLVMDisposeMessage. */
extern char *LLVMGetHostCPUFeatures(void);
#endif
extern unsigned LLVMGetAttributeCountAtIndexPG(LLVMValueRef F, uint32 Idx);
extern LLVMTypeRef LLVMGetFunctionReturnType(LLVMValueRef r);
extern LLVMTypeRef LLVMGetFunctionType(LLVMValueRef r);
#if LLVM_MAJOR_VERSION < 8
extern LLVMTypeRef LLVMGlobalGetValueType(LLVMValueRef g);
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif

12
src/include/pg_config.h.in
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@ -100,18 +100,6 @@
`LLVMCreatePerfJITEventListener', and to 0 if you don't. */
#undef HAVE_DECL_LLVMCREATEPERFJITEVENTLISTENER
/* Define to 1 if you have the declaration of `LLVMGetHostCPUFeatures', and to
0 if you don't. */
#undef HAVE_DECL_LLVMGETHOSTCPUFEATURES
/* Define to 1 if you have the declaration of `LLVMGetHostCPUName', and to 0
if you don't. */
#undef HAVE_DECL_LLVMGETHOSTCPUNAME
/* Define to 1 if you have the declaration of `LLVMOrcGetSymbolAddressIn', and
to 0 if you don't. */
#undef HAVE_DECL_LLVMORCGETSYMBOLADDRESSIN
/* Define to 1 if you have the declaration of `posix_fadvise', and to 0 if you
don't. */
#undef HAVE_DECL_POSIX_FADVISE

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