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d04a8d4b33
Sooooo many of these had incorrect or strange main module includes. I have manually inspected all of these, and fixed the main module include to be the nearest plausible thing I could find. If you own or care about any of these source files, I encourage you to take some time and check that these edits were sensible. I can't have broken anything (I strictly added headers, and reordered them, never removed), but they may not be the headers you'd really like to identify as containing the API being implemented. Many forward declarations and missing includes were added to a header files to allow them to parse cleanly when included first. The main module rule does in fact have its merits. =] git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@169131 91177308-0d34-0410-b5e6-96231b3b80d8
75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
//===-- llvm/CodeGen/ExpandISelPseudos.cpp ----------------------*- C++ -*-===//
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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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// Expand Pseudo-instructions produced by ISel. These are usually to allow
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// the expansion to contain control flow, such as a conditional move
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// implemented with a conditional branch and a phi, or an atomic operation
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// implemented with a loop.
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//
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//===----------------------------------------------------------------------===//
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#define DEBUG_TYPE "expand-isel-pseudos"
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#include "llvm/CodeGen/Passes.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/Support/Debug.h"
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#include "llvm/Target/TargetLowering.h"
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#include "llvm/Target/TargetMachine.h"
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using namespace llvm;
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namespace {
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class ExpandISelPseudos : public MachineFunctionPass {
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public:
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static char ID; // Pass identification, replacement for typeid
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ExpandISelPseudos() : MachineFunctionPass(ID) {}
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private:
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virtual bool runOnMachineFunction(MachineFunction &MF);
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virtual void getAnalysisUsage(AnalysisUsage &AU) const {
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MachineFunctionPass::getAnalysisUsage(AU);
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}
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};
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} // end anonymous namespace
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char ExpandISelPseudos::ID = 0;
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char &llvm::ExpandISelPseudosID = ExpandISelPseudos::ID;
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INITIALIZE_PASS(ExpandISelPseudos, "expand-isel-pseudos",
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"Expand ISel Pseudo-instructions", false, false)
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bool ExpandISelPseudos::runOnMachineFunction(MachineFunction &MF) {
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bool Changed = false;
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const TargetLowering *TLI = MF.getTarget().getTargetLowering();
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// Iterate through each instruction in the function, looking for pseudos.
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for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {
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MachineBasicBlock *MBB = I;
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for (MachineBasicBlock::iterator MBBI = MBB->begin(), MBBE = MBB->end();
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MBBI != MBBE; ) {
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MachineInstr *MI = MBBI++;
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// If MI is a pseudo, expand it.
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if (MI->usesCustomInsertionHook()) {
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Changed = true;
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MachineBasicBlock *NewMBB =
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TLI->EmitInstrWithCustomInserter(MI, MBB);
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// The expansion may involve new basic blocks.
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if (NewMBB != MBB) {
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MBB = NewMBB;
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I = NewMBB;
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MBBI = NewMBB->begin();
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MBBE = NewMBB->end();
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}
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}
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}
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}
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return Changed;
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}
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