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Mark __dso_handle a "far" pointer:

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The relocation needs to allow for long offsets, as for the JIT, __dso_handle
might be outside the shared library. Fixes
```
cling JIT session error: In graph cling-module-10-jitted-objectbuffer, section __TEXT,__StaticInit: relocation target "___dso_handle" at address 0x7fe1ee5052e0 is out of range of Delta32 fixup at 0x108c410bd (___cxx_global_var_initcling_module_10_, 0x108c41090 + 0x2d)
[runStaticInitializersOnce]: Failed to materialize symbols: { (main, { $.cling-module-10.__inits.0, __ZN12IncidentTypeL2m1E, __ZN6MarkerD2Ev, __ZN6MarkerD1Ev, ___cxx_global_var_initcling_module_10_.1, __GLOBAL__sub_I_cling_module_10, __ZN6MarkerC2EPKc, ___cxx_global_var_initcling_module_10_.3, __ZN12IncidentTypeL2m3E, __ZN6MarkerC1EPKc, __ZN12IncidentTypeL2m2E, ____orc_init_func.cling-module-10, ___cxx_global_var_initcling_module_10_ }) }
```
as seen no RISC-V and macOS, i.e. with the JITLinker.
This commit is contained in:
Jonas Hahnfeld 2022-11-18 10:15:00 +01:00 committed by jenkins
parent 89543f66cf
commit 76d96e317f
1 changed files with 52 additions and 0 deletions
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52
lib/Interpreter/BackendPasses.cpp
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@ -88,6 +88,57 @@ namespace {
char KeepLocalGVPass::ID = 0;
namespace {
class PreventLocalOptPass: public ModulePass {
static char ID;
bool runOnGlobal(GlobalValue& GV) {
if (!GV.isDeclaration())
return false; // no change.
// GV is a declaration with no definition. Make sure to prevent any
// optimization that tries to take advantage of the actual definition
// being "local" because we have no influence on the memory layout of
// data sections and how "close" they are to the code.
bool changed = false;
if (GV.hasLocalLinkage()) {
GV.setLinkage(llvm::GlobalValue::ExternalLinkage);
changed = true;
}
if (!GV.hasDefaultVisibility()) {
GV.setVisibility(llvm::GlobalValue::DefaultVisibility);
changed = true;
}
// Set DSO locality last because setLinkage() and setVisibility() check
// isImplicitDSOLocal().
if (GV.isDSOLocal()) {
GV.setDSOLocal(false);
changed = true;
}
return changed;
}
public:
PreventLocalOptPass() : ModulePass(ID) {}
bool runOnModule(Module &M) override {
bool ret = false;
for (auto &&F: M)
ret |= runOnGlobal(F);
for (auto &&G: M.globals())
ret |= runOnGlobal(G);
return ret;
}
};
}
char PreventLocalOptPass::ID = 0;
namespace {
class WeakTypeinfoVTablePass: public ModulePass {
static char ID;
@ -339,6 +390,7 @@ void BackendPasses::CreatePasses(llvm::Module& M, int OptLevel)
m_MPM[OptLevel].reset(new legacy::PassManager());
m_MPM[OptLevel]->add(new KeepLocalGVPass());
m_MPM[OptLevel]->add(new PreventLocalOptPass());
m_MPM[OptLevel]->add(new WeakTypeinfoVTablePass());
m_MPM[OptLevel]->add(new ReuseExistingWeakSymbols());