vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
102 lines
3.4 KiB
C++
102 lines
3.4 KiB
C++
//===------- HowToUseLLJIT.cpp - An example use of ORC-based LLJIT --------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This small program provides an example of how to quickly build a small
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// module with a 'add1' function and use of IRBuilder to create add & return
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// instructions.
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//
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// Goal:
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// The goal of this snippet is to create in the memory
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// the LLVM module consisting of a function as follow:
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//
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// int add1(int x) {
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// return x+1;
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// }
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// add1(42);
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//
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// then compile the module via LLJIT, then execute the 'add1'
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// function and return result to a driver, i.e. to a "host program".
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ExecutionEngine/Orc/LLJIT.h"
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#include "llvm/IR/Function.h"
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#include "llvm/IR/IRBuilder.h"
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#include "llvm/IR/Module.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/InitLLVM.h"
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#include "llvm/Support/TargetSelect.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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using namespace llvm::orc;
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ExitOnError ExitOnErr;
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ThreadSafeModule createDemoModule() {
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auto Context = std::make_unique<LLVMContext>();
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auto M = std::make_unique<Module>("test", *Context);
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// Create the add1 function entry and insert this entry into module M. The
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// function will have a return type of "int" and take an argument of "int".
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Function *Add1F =
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Function::Create(FunctionType::get(Type::getInt32Ty(*Context),
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{Type::getInt32Ty(*Context)}, false),
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Function::ExternalLinkage, "add1", M.get());
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// Add a basic block to the function. As before, it automatically inserts
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// because of the last argument.
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BasicBlock *BB = BasicBlock::Create(*Context, "EntryBlock", Add1F);
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// Create a basic block builder with default parameters. The builder will
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// automatically append instructions to the basic block `BB'.
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IRBuilder<> builder(BB);
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// Get pointers to the constant `1'.
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Value *One = builder.getInt32(1);
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// Get pointers to the integer argument of the add1 function...
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assert(Add1F->arg_begin() != Add1F->arg_end()); // Make sure there's an arg
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Argument *ArgX = &*Add1F->arg_begin(); // Get the arg
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ArgX->setName("AnArg"); // Give it a nice symbolic name for fun.
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// Create the add instruction, inserting it into the end of BB.
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Value *Add = builder.CreateAdd(One, ArgX);
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// Create the return instruction and add it to the basic block
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builder.CreateRet(Add);
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return ThreadSafeModule(std::move(M), std::move(Context));
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}
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int main(int argc, char *argv[]) {
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// Initialize LLVM.
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InitLLVM X(argc, argv);
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InitializeNativeTarget();
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InitializeNativeTargetAsmPrinter();
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cl::ParseCommandLineOptions(argc, argv, "HowToUseLLJIT");
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ExitOnErr.setBanner(std::string(argv[0]) + ": ");
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// Create an LLJIT instance.
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auto J = ExitOnErr(LLJITBuilder().create());
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auto M = createDemoModule();
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ExitOnErr(J->addIRModule(std::move(M)));
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// Look up the JIT'd function, cast it to a function pointer, then call it.
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auto Add1Addr = ExitOnErr(J->lookup("add1"));
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int (*Add1)(int) = Add1Addr.toPtr<int(int)>();
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int Result = Add1(42);
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outs() << "add1(42) = " << Result << "\n";
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return 0;
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}
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