Misc mid-level changes for new 'fence' instruction.
llvm-svn: 136205
diff --git a/llvm/lib/VMCore/Instruction.cpp b/llvm/lib/VMCore/Instruction.cpp
index 4597b57..cd8f737 100644
--- a/llvm/lib/VMCore/Instruction.cpp
+++ b/llvm/lib/VMCore/Instruction.cpp
@@ -209,6 +209,9 @@
return IVI->getIndices() == cast<InsertValueInst>(I)->getIndices();
if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(this))
return EVI->getIndices() == cast<ExtractValueInst>(I)->getIndices();
+ if (const FenceInst *FI = dyn_cast<FenceInst>(this))
+ return FI->getOrdering() == cast<FenceInst>(FI)->getOrdering() &&
+ FI->getSynchScope() == cast<FenceInst>(FI)->getSynchScope();
return true;
}
@@ -249,6 +252,9 @@
return IVI->getIndices() == cast<InsertValueInst>(I)->getIndices();
if (const ExtractValueInst *EVI = dyn_cast<ExtractValueInst>(this))
return EVI->getIndices() == cast<ExtractValueInst>(I)->getIndices();
+ if (const FenceInst *FI = dyn_cast<FenceInst>(this))
+ return FI->getOrdering() == cast<FenceInst>(FI)->getOrdering() &&
+ FI->getSynchScope() == cast<FenceInst>(FI)->getSynchScope();
return true;
}
@@ -281,6 +287,7 @@
default: return false;
case Instruction::VAArg:
case Instruction::Load:
+ case Instruction::Fence: // FIXME: refine definition of mayReadFromMemory
return true;
case Instruction::Call:
return !cast<CallInst>(this)->doesNotAccessMemory();
@@ -296,6 +303,7 @@
bool Instruction::mayWriteToMemory() const {
switch (getOpcode()) {
default: return false;
+ case Instruction::Fence: // FIXME: refine definition of mayWriteToMemory
case Instruction::Store:
case Instruction::VAArg:
return true;
@@ -393,6 +401,7 @@
case Switch:
case Unwind:
case Unreachable:
+ case Fence:
return false; // Misc instructions which have effects
}
}