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Reverted r143600 - selector reference change

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143646 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Pete Cooper
2011-11-03 20:47:50 +00:00
parent 55d6e6777d
commit 71fccadbed
2 changed files with 0 additions and 45 deletions
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lib/CodeGen/MachineInstr.cpp
-15
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@@ -1232,19 +1232,6 @@ bool MachineInstr::hasVolatileMemoryRef() const {
return false;
}
/// pointsToRuntimeConstantMemory - Return true if this value points to data
/// which does never changes once the program starts running
static bool pointsToRuntimeConstantMemory(const Value *V) {
if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
StringRef Name = GV->getName();
// These special values are known to be constant at runtime
// TODO: a new linkage type for these would be far better than this check
if (Name.startswith("\01L_OBJC_SELECTOR_REFERENCES_"))
return true;
}
return false;
}
/// isInvariantLoad - Return true if this instruction is loading from a
/// location whose value is invariant across the function. For example,
/// loading a value from the constant pool or from the argument area
@@ -1272,8 +1259,6 @@ bool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const {
if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V))
if (PSV->isConstant(MFI))
continue;
if (pointsToRuntimeConstantMemory(V))
continue;
// If we have an AliasAnalysis, ask it whether the memory is constant.
if (AA && AA->pointsToConstantMemory(
AliasAnalysis::Location(V, (*I)->getSize(),