Teach stack promotion to walk the CFG when a potential reuse of an allocation is found to see if it can actually happen instead of just assuming it will. This allows it to catch cases like {{{ int i; Foo f; while (cond(i)) f = new Foo(i++); return f.value; }}} where it previously wouldn't because a phi using the allocation would appear in the condition block to propagate it to the use after the loop.

#include "gen/llvm.h"
#include "gen/tollvm.h"
#include "gen/irstate.h"
#include "ir/irmodule.h"

IrModule::IrModule(Module* module, const char* srcfilename)
{
    M = module;

    LLConstant* slice = DtoConstString(srcfilename);
    fileName = new llvm::GlobalVariable(
        slice->getType(), true, LLGlobalValue::InternalLinkage, slice, ".modulefilename", gIR->module);
}

IrModule::~IrModule()
{
}