Files
RedBear-OS/local/recipes/dev/libclc/source/llvm/lib/CodeGen/MachineCheckDebugify.cpp
T
vasilito cb424d7448 build: static patch-sanity linter (shift-left the malformed-patch class)
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).
2026-08-01 05:13:02 +03:00

129 lines
4.2 KiB
C++

//===- MachineCheckDebugify.cpp - Check debug info ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file This checks debug info after mir-debugify (+ pass-to-test). Currently
/// it simply checks the integrity of line info in DILocation and
/// DILocalVariable which mir-debugifiy generated before.
//===----------------------------------------------------------------------===//
#include "llvm/ADT/StringExtras.h"
#include "llvm/CodeGen/MachineBasicBlock.h"
#include "llvm/CodeGen/MachineFunction.h"
#include "llvm/CodeGen/MachineModuleInfo.h"
#include "llvm/CodeGen/Passes.h"
#include "llvm/IR/Constants.h"
#include "llvm/IR/DebugInfoMetadata.h"
#include "llvm/IR/Module.h"
#include "llvm/InitializePasses.h"
#include "llvm/Pass.h"
#define DEBUG_TYPE "mir-check-debugify"
using namespace llvm;
namespace {
struct CheckDebugMachineModule : public ModulePass {
bool runOnModule(Module &M) override {
NamedMDNode *NMD = M.getNamedMetadata("llvm.mir.debugify");
if (!NMD) {
errs() << "WARNING: Please run mir-debugify to generate "
"llvm.mir.debugify metadata first.\n";
return false;
}
MachineModuleInfo &MMI =
getAnalysis<MachineModuleInfoWrapperPass>().getMMI();
auto getDebugifyOperand = [&](unsigned Idx) -> unsigned {
return mdconst::extract<ConstantInt>(NMD->getOperand(Idx)->getOperand(0))
->getZExtValue();
};
assert(NMD->getNumOperands() == 2 &&
"llvm.mir.debugify should have exactly 2 operands!");
unsigned NumLines = getDebugifyOperand(0);
unsigned NumVars = getDebugifyOperand(1);
BitVector MissingLines{NumLines, true};
BitVector MissingVars{NumVars, true};
for (Function &F : M.functions()) {
MachineFunction *MF = MMI.getMachineFunction(F);
if (!MF)
continue;
for (MachineBasicBlock &MBB : *MF) {
// Find missing lines.
// TODO: Avoid meta instructions other than dbg_val.
for (MachineInstr &MI : MBB) {
if (MI.isDebugValue())
continue;
const DebugLoc DL = MI.getDebugLoc();
if (DL && DL.getLine() != 0) {
MissingLines.reset(DL.getLine() - 1);
continue;
}
if (!DL) {
errs() << "WARNING: Instruction with empty DebugLoc in function ";
errs() << F.getName() << " --";
MI.print(errs());
}
}
// Find missing variables.
// TODO: Handle DBG_INSTR_REF which is under an experimental option now.
for (MachineInstr &MI : MBB) {
if (!MI.isDebugValue())
continue;
const DILocalVariable *LocalVar = MI.getDebugVariable();
unsigned Var = ~0U;
(void)to_integer(LocalVar->getName(), Var, 10);
assert(Var <= NumVars && "Unexpected name for DILocalVariable");
MissingVars.reset(Var - 1);
}
}
}
bool Fail = false;
for (unsigned Idx : MissingLines.set_bits()) {
errs() << "WARNING: Missing line " << Idx + 1 << "\n";
Fail = true;
}
for (unsigned Idx : MissingVars.set_bits()) {
errs() << "WARNING: Missing variable " << Idx + 1 << "\n";
Fail = true;
}
errs() << "Machine IR debug info check: ";
errs() << (Fail ? "FAIL" : "PASS") << "\n";
return false;
}
CheckDebugMachineModule() : ModulePass(ID) {}
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.addRequired<MachineModuleInfoWrapperPass>();
AU.setPreservesAll();
}
static char ID; // Pass identification.
};
char CheckDebugMachineModule::ID = 0;
} // end anonymous namespace
INITIALIZE_PASS_BEGIN(CheckDebugMachineModule, DEBUG_TYPE,
"Machine Check Debug Module", false, false)
INITIALIZE_PASS_END(CheckDebugMachineModule, DEBUG_TYPE,
"Machine Check Debug Module", false, false)
ModulePass *llvm::createCheckDebugMachineModulePass() {
return new CheckDebugMachineModule();
}