vendor/llvm-project/llvmorg-13-init-16847-g88e66fa60ae5vendor/llvm-project/llvmorg-12.0.1-rc2-0-ge7dac564cd0evendor/llvm-project/llvmorg-12.0.1-0-gfed41342a82f

1 files changed, 63 insertions, 11 deletions

diff --git a/llvm/lib/CodeGen/MachineBasicBlock.cpp b/llvm/lib/CodeGen/MachineBasicBlock.cpp
index b4187af02975..c6914dcd0e54 100644
--- a/llvm/lib/CodeGen/MachineBasicBlock.cpp
+++ b/llvm/lib/CodeGen/MachineBasicBlock.cpp
@@ -21,6 +21,7 @@
 #include "llvm/CodeGen/MachineRegisterInfo.h"
 #include "llvm/CodeGen/SlotIndexes.h"
 #include "llvm/CodeGen/TargetInstrInfo.h"
+#include "llvm/CodeGen/TargetLowering.h"
 #include "llvm/CodeGen/TargetRegisterInfo.h"
 #include "llvm/CodeGen/TargetSubtargetInfo.h"
 #include "llvm/Config/llvm-config.h"
@@ -87,6 +88,17 @@ MCSymbol *MachineBasicBlock::getSymbol() const {
   return CachedMCSymbol;
 }
 
+MCSymbol *MachineBasicBlock::getEHCatchretSymbol() const {
+  if (!CachedEHCatchretMCSymbol) {
+    const MachineFunction *MF = getParent();
+    SmallString<128> SymbolName;
+    raw_svector_ostream(SymbolName)
+        << "$ehgcr_" << MF->getFunctionNumber() << '_' << getNumber();
+    CachedEHCatchretMCSymbol = MF->getContext().getOrCreateSymbol(SymbolName);
+  }
+  return CachedEHCatchretMCSymbol;
+}
+
 MCSymbol *MachineBasicBlock::getEndSymbol() const {
   if (!CachedEndMCSymbol) {
     const MachineFunction *MF = getParent();
@@ -210,11 +222,13 @@ MachineBasicBlock::SkipPHIsAndLabels(MachineBasicBlock::iterator I) {
 }
 
 MachineBasicBlock::iterator
-MachineBasicBlock::SkipPHIsLabelsAndDebug(MachineBasicBlock::iterator I) {
+MachineBasicBlock::SkipPHIsLabelsAndDebug(MachineBasicBlock::iterator I,
+                                          bool SkipPseudoOp) {
   const TargetInstrInfo *TII = getParent()->getSubtarget().getInstrInfo();
 
   iterator E = end();
   while (I != E && (I->isPHI() || I->isPosition() || I->isDebugInstr() ||
+                    (SkipPseudoOp && I->isPseudoProbe()) ||
                     TII->isBasicBlockPrologue(*I)))
     ++I;
   // FIXME: This needs to change if we wish to bundle labels / dbg_values
@@ -243,12 +257,14 @@ MachineBasicBlock::instr_iterator MachineBasicBlock::getFirstInstrTerminator() {
   return I;
 }
 
-MachineBasicBlock::iterator MachineBasicBlock::getFirstNonDebugInstr() {
+MachineBasicBlock::iterator
+MachineBasicBlock::getFirstNonDebugInstr(bool SkipPseudoOp) {
   // Skip over begin-of-block dbg_value instructions.
-  return skipDebugInstructionsForward(begin(), end());
+  return skipDebugInstructionsForward(begin(), end(), SkipPseudoOp);
 }
 
-MachineBasicBlock::iterator MachineBasicBlock::getLastNonDebugInstr() {
+MachineBasicBlock::iterator
+MachineBasicBlock::getLastNonDebugInstr(bool SkipPseudoOp) {
   // Skip over end-of-block dbg_value instructions.
   instr_iterator B = instr_begin(), I = instr_end();
   while (I != B) {
@@ -256,6 +272,8 @@ MachineBasicBlock::iterator MachineBasicBlock::getLastNonDebugInstr() {
     // Return instruction that starts a bundle.
     if (I->isDebugInstr() || I->isInsideBundle())
       continue;
+    if (SkipPseudoOp && I->isPseudoProbe())
+      continue;
     return I;
   }
   // The block is all debug values.
@@ -1075,10 +1093,9 @@ MachineBasicBlock *MachineBasicBlock::SplitCriticalEdge(
          I != E; ++I)
       NewTerminators.push_back(&*I);
 
-    for (SmallVectorImpl<MachineInstr*>::iterator I = Terminators.begin(),
-        E = Terminators.end(); I != E; ++I) {
-      if (!is_contained(NewTerminators, *I))
-        Indexes->removeMachineInstrFromMaps(**I);
+    for (MachineInstr *Terminator : Terminators) {
+      if (!is_contained(NewTerminators, Terminator))
+        Indexes->removeMachineInstrFromMaps(*Terminator);
     }
   }
 
@@ -1361,6 +1378,14 @@ MachineBasicBlock::findDebugLoc(instr_iterator MBBI) {
   return {};
 }
 
+DebugLoc MachineBasicBlock::rfindDebugLoc(reverse_instr_iterator MBBI) {
+  // Skip debug declarations, we don't want a DebugLoc from them.
+  MBBI = skipDebugInstructionsBackward(MBBI, instr_rbegin());
+  if (!MBBI->isDebugInstr())
+    return MBBI->getDebugLoc();
+  return {};
+}
+
 /// Find the previous valid DebugLoc preceding MBBI, skipping and DBG_VALUE
 /// instructions.  Return UnknownLoc if there is none.
 DebugLoc MachineBasicBlock::findPrevDebugLoc(instr_iterator MBBI) {
@@ -1371,6 +1396,16 @@ DebugLoc MachineBasicBlock::findPrevDebugLoc(instr_iterator MBBI) {
   return {};
 }
 
+DebugLoc MachineBasicBlock::rfindPrevDebugLoc(reverse_instr_iterator MBBI) {
+  if (MBBI == instr_rend())
+    return {};
+  // Skip debug declarations, we don't want a DebugLoc from them.
+  MBBI = next_nodbg(MBBI, instr_rend());
+  if (MBBI != instr_rend())
+    return MBBI->getDebugLoc();
+  return {};
+}
+
 /// Find and return the merged DebugLoc of the branch instructions of the block.
 /// Return UnknownLoc if there is none.
 DebugLoc
@@ -1455,7 +1490,7 @@ MachineBasicBlock::computeRegisterLiveness(const TargetRegisterInfo *TRI,
   // Try searching forwards from Before, looking for reads or defs.
   const_iterator I(Before);
   for (; I != end() && N > 0; ++I) {
-    if (I->isDebugInstr())
+    if (I->isDebugOrPseudoInstr())
       continue;
 
     --N;
@@ -1493,7 +1528,7 @@ MachineBasicBlock::computeRegisterLiveness(const TargetRegisterInfo *TRI,
     do {
       --I;
 
-      if (I->isDebugInstr())
+      if (I->isDebugOrPseudoInstr())
         continue;
 
       --N;
@@ -1527,7 +1562,7 @@ MachineBasicBlock::computeRegisterLiveness(const TargetRegisterInfo *TRI,
 
   // If all the instructions before this in the block are debug instructions,
   // skip over them.
-  while (I != begin() && std::prev(I)->isDebugInstr())
+  while (I != begin() && std::prev(I)->isDebugOrPseudoInstr())
     --I;
 
   // Did we get to the start of the block?
@@ -1569,6 +1604,23 @@ MachineBasicBlock::livein_iterator MachineBasicBlock::livein_begin() const {
   return LiveIns.begin();
 }
 
+MachineBasicBlock::liveout_iterator MachineBasicBlock::liveout_begin() const {
+  const MachineFunction &MF = *getParent();
+  assert(MF.getProperties().hasProperty(
+      MachineFunctionProperties::Property::TracksLiveness) &&
+      "Liveness information is accurate");
+
+  const TargetLowering &TLI = *MF.getSubtarget().getTargetLowering();
+  MCPhysReg ExceptionPointer = 0, ExceptionSelector = 0;
+  if (MF.getFunction().hasPersonalityFn()) {
+    auto PersonalityFn = MF.getFunction().getPersonalityFn();
+    ExceptionPointer = TLI.getExceptionPointerRegister(PersonalityFn);
+    ExceptionSelector = TLI.getExceptionSelectorRegister(PersonalityFn);
+  }
+
+  return liveout_iterator(*this, ExceptionPointer, ExceptionSelector, false);
+}
+
 const MBBSectionID MBBSectionID::ColdSectionID(MBBSectionID::SectionType::Cold);
 const MBBSectionID
     MBBSectionID::ExceptionSectionID(MBBSectionID::SectionType::Exception);