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More code cleanup [NFC]

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233361 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Philip Reames 2015-03-27 05:47:00 +00:00
parent de15c8edbc
commit 1f768e83c0
1 changed files with 7 additions and 14 deletions
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21
lib/Transforms/Scalar/RewriteStatepointsForGC.cpp
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@ -299,12 +299,6 @@ analyzeParsePointLiveness(DominatorTree &DT, const CallSite &CS,
result.liveset = liveset;
}
/// True iff this value is the null pointer constant (of any pointer type)
static bool LLVM_ATTRIBUTE_UNUSED isNullConstant(Value *V) {
return isa<Constant>(V) && isa<PointerType>(V->getType()) &&
cast<Constant>(V)->isNullValue();
}
/// Helper function for findBasePointer - Will return a value which either a)
/// defines the base pointer for the input or b) blocks the simple search
/// (i.e. a PHI or Select of two derived pointers)
@ -346,9 +340,8 @@ static Value *findBaseDefiningValue(Value *I) {
// off a potentially null value and have proven it null. We also use
// null pointers in dead paths of relocation phis (which we might later
// want to find a base pointer for).
assert(Con->getType()->isPointerTy() &&
"Base for pointer must be another pointer");
assert(Con->isNullValue() && "null is the only case which makes sense");
assert(isa<ConstantPointerNull>(Con) &&
"null is the only case which makes sense");
return Con;
}
@ -941,10 +934,10 @@ static void findBasePointers(const StatepointLiveSetTy &live,
// If you see this trip and like to live really dangerously, the code should
// be correct, just with idioms the verifier can't handle. You can try
// disabling the verifier at your own substaintial risk.
assert(!isNullConstant(base) && "the relocation code needs adjustment to "
"handle the relocation of a null pointer "
"constant without causing false positives "
"in the safepoint ir verifier.");
assert(!isa<ConstantPointerNull>(base) &&
"the relocation code needs adjustment to handle the relocation of "
"a null pointer constant without causing false positives in the "
"safepoint ir verifier.");
}
}
@ -1547,7 +1540,7 @@ static void relocationViaAlloca(
}
} else {
assert((isa<Argument>(def) || isa<GlobalVariable>(def) ||
(isa<Constant>(def) && cast<Constant>(def)->isNullValue())) &&
isa<ConstantPointerNull>(def)) &&
"Must be argument or global");
store->insertAfter(cast<Instruction>(alloca));
}