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eb66b33867
I did this a long time ago with a janky python script, but now clang-format has built-in support for this. I fed clang-format every line with a #include and let it re-sort things according to the precise LLVM rules for include ordering baked into clang-format these days. I've reverted a number of files where the results of sorting includes isn't healthy. Either places where we have legacy code relying on particular include ordering (where possible, I'll fix these separately) or where we have particular formatting around #include lines that I didn't want to disturb in this patch. This patch is *entirely* mechanical. If you get merge conflicts or anything, just ignore the changes in this patch and run clang-format over your #include lines in the files. Sorry for any noise here, but it is important to keep these things stable. I was seeing an increasing number of patches with irrelevant re-ordering of #include lines because clang-format was used. This patch at least isolates that churn, makes it easy to skip when resolving conflicts, and gets us to a clean baseline (again). llvm-svn: 304787
97 lines
3.0 KiB
C++
97 lines
3.0 KiB
C++
//===--- SIDebuggerInsertNops.cpp - Inserts nops for debugger usage -------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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/// \file
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/// \brief Inserts one nop instruction for each high level source statement for
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/// debugger usage.
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///
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/// Tools, such as a debugger, need to pause execution based on user input (i.e.
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/// breakpoint). In order to do this, one nop instruction is inserted before the
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/// first isa instruction of each high level source statement. Further, the
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/// debugger may replace nop instructions with trap instructions based on user
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/// input.
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//
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//===----------------------------------------------------------------------===//
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#include "AMDGPUSubtarget.h"
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#include "SIInstrInfo.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/CodeGen/MachineFunction.h"
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#include "llvm/CodeGen/MachineFunctionPass.h"
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#include "llvm/CodeGen/MachineInstrBuilder.h"
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#include "llvm/CodeGen/MachineModuleInfo.h"
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using namespace llvm;
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#define DEBUG_TYPE "si-debugger-insert-nops"
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#define PASS_NAME "SI Debugger Insert Nops"
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namespace {
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class SIDebuggerInsertNops : public MachineFunctionPass {
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public:
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static char ID;
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SIDebuggerInsertNops() : MachineFunctionPass(ID) { }
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StringRef getPassName() const override { return PASS_NAME; }
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void getAnalysisUsage(AnalysisUsage &AU) const override {
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AU.setPreservesCFG();
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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bool runOnMachineFunction(MachineFunction &MF) override;
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};
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} // anonymous namespace
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INITIALIZE_PASS(SIDebuggerInsertNops, DEBUG_TYPE, PASS_NAME, false, false)
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char SIDebuggerInsertNops::ID = 0;
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char &llvm::SIDebuggerInsertNopsID = SIDebuggerInsertNops::ID;
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FunctionPass *llvm::createSIDebuggerInsertNopsPass() {
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return new SIDebuggerInsertNops();
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}
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bool SIDebuggerInsertNops::runOnMachineFunction(MachineFunction &MF) {
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// Skip this pass if "amdgpu-debugger-insert-nops" attribute was not
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// specified.
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const SISubtarget &ST = MF.getSubtarget<SISubtarget>();
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if (!ST.debuggerInsertNops())
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return false;
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// Skip machine functions without debug info.
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if (!MF.getMMI().hasDebugInfo())
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return false;
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// Target instruction info.
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const SIInstrInfo *TII = ST.getInstrInfo();
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// Set containing line numbers that have nop inserted.
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DenseSet<unsigned> NopInserted;
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for (auto &MBB : MF) {
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for (auto MI = MBB.begin(); MI != MBB.end(); ++MI) {
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// Skip DBG_VALUE instructions and instructions without location.
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if (MI->isDebugValue() || !MI->getDebugLoc())
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continue;
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// Insert nop instruction if line number does not have nop inserted.
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auto DL = MI->getDebugLoc();
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if (NopInserted.find(DL.getLine()) == NopInserted.end()) {
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BuildMI(MBB, *MI, DL, TII->get(AMDGPU::S_NOP))
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.addImm(0);
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NopInserted.insert(DL.getLine());
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}
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}
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}
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return true;
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}
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