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).
112 lines
4.1 KiB
C++
112 lines
4.1 KiB
C++
//===- MachineBranchProbabilityInfo.cpp - Machine Branch Probability Info -===//
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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 analysis uses probability info stored in Machine Basic Blocks.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/CodeGen/MachineBranchProbabilityInfo.h"
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#include "llvm/CodeGen/MachineBasicBlock.h"
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#include "llvm/InitializePasses.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/raw_ostream.h"
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using namespace llvm;
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INITIALIZE_PASS_BEGIN(MachineBranchProbabilityInfoWrapperPass,
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"machine-branch-prob",
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"Machine Branch Probability Analysis", false, true)
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INITIALIZE_PASS_END(MachineBranchProbabilityInfoWrapperPass,
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"machine-branch-prob",
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"Machine Branch Probability Analysis", false, true)
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namespace llvm {
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cl::opt<unsigned>
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StaticLikelyProb("static-likely-prob",
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cl::desc("branch probability threshold in percentage"
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" to be considered very likely"),
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cl::init(80), cl::Hidden);
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cl::opt<unsigned> ProfileLikelyProb(
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"profile-likely-prob",
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cl::desc("branch probability threshold in percentage to be considered"
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" very likely when profile is available"),
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cl::init(51), cl::Hidden);
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} // namespace llvm
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MachineBranchProbabilityAnalysis::Result
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MachineBranchProbabilityAnalysis::run(MachineFunction &,
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MachineFunctionAnalysisManager &) {
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return MachineBranchProbabilityInfo();
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}
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PreservedAnalyses
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MachineBranchProbabilityPrinterPass::run(MachineFunction &MF,
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MachineFunctionAnalysisManager &MFAM) {
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OS << "Printing analysis 'Machine Branch Probability Analysis' for machine "
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"function '"
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<< MF.getName() << "':\n";
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auto &MBPI = MFAM.getResult<MachineBranchProbabilityAnalysis>(MF);
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for (const MachineBasicBlock &MBB : MF) {
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for (const MachineBasicBlock *Succ : MBB.successors())
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MBPI.printEdgeProbability(OS << " ", &MBB, Succ);
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}
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return PreservedAnalyses::all();
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}
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char MachineBranchProbabilityInfoWrapperPass::ID = 0;
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MachineBranchProbabilityInfoWrapperPass::
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MachineBranchProbabilityInfoWrapperPass()
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: ImmutablePass(ID) {
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PassRegistry &Registry = *PassRegistry::getPassRegistry();
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initializeMachineBranchProbabilityInfoWrapperPassPass(Registry);
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}
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void MachineBranchProbabilityInfoWrapperPass::anchor() {}
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AnalysisKey MachineBranchProbabilityAnalysis::Key;
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bool MachineBranchProbabilityInfo::invalidate(
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MachineFunction &, const PreservedAnalyses &PA,
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MachineFunctionAnalysisManager::Invalidator &) {
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auto PAC = PA.getChecker<MachineBranchProbabilityAnalysis>();
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return !PAC.preservedWhenStateless();
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}
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BranchProbability MachineBranchProbabilityInfo::getEdgeProbability(
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const MachineBasicBlock *Src,
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MachineBasicBlock::const_succ_iterator Dst) const {
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return Src->getSuccProbability(Dst);
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}
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BranchProbability MachineBranchProbabilityInfo::getEdgeProbability(
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const MachineBasicBlock *Src, const MachineBasicBlock *Dst) const {
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// This is a linear search. Try to use the const_succ_iterator version when
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// possible.
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return getEdgeProbability(Src, find(Src->successors(), Dst));
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}
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bool MachineBranchProbabilityInfo::isEdgeHot(
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const MachineBasicBlock *Src, const MachineBasicBlock *Dst) const {
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BranchProbability HotProb(StaticLikelyProb, 100);
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return getEdgeProbability(Src, Dst) > HotProb;
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}
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raw_ostream &MachineBranchProbabilityInfo::printEdgeProbability(
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raw_ostream &OS, const MachineBasicBlock *Src,
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const MachineBasicBlock *Dst) const {
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const BranchProbability Prob = getEdgeProbability(Src, Dst);
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OS << "edge " << printMBBReference(*Src) << " -> " << printMBBReference(*Dst)
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<< " probability is " << Prob
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<< (isEdgeHot(Src, Dst) ? " [HOT edge]\n" : "\n");
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return OS;
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}
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