More dead code removal (using -Wunreachable-code)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index 8e2f263..dba6de3 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -1125,7 +1125,6 @@
if (Ty->isDoubleTy())
return ConstantFP::get(Ty->getContext(), APFloat(V));
llvm_unreachable("Can only constant fold float/double");
- return 0; // dummy return to suppress warning
}
static Constant *ConstantFoldBinaryFP(double (*NativeFP)(double, double),
@@ -1142,7 +1141,6 @@
if (Ty->isDoubleTy())
return ConstantFP::get(Ty->getContext(), APFloat(V));
llvm_unreachable("Can only constant fold float/double");
- return 0; // dummy return to suppress warning
}
/// ConstantFoldConvertToInt - Attempt to an SSE floating point to integer
diff --git a/lib/Analysis/LoopDependenceAnalysis.cpp b/lib/Analysis/LoopDependenceAnalysis.cpp
index 3997ac4..463269d 100644
--- a/lib/Analysis/LoopDependenceAnalysis.cpp
+++ b/lib/Analysis/LoopDependenceAnalysis.cpp
@@ -91,8 +91,6 @@
if (StoreInst *i = dyn_cast<StoreInst>(I))
return i->getPointerOperand();
llvm_unreachable("Value is no load or store instruction!");
- // Never reached.
- return 0;
}
static AliasAnalysis::AliasResult UnderlyingObjectsAlias(AliasAnalysis *AA,
diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index 53d6660..30f8d94 100644
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -329,8 +329,6 @@
NewLoadByteSize <<= 1;
}
-
- return 0;
}
namespace {
diff --git a/lib/Analysis/PHITransAddr.cpp b/lib/Analysis/PHITransAddr.cpp
index 80ea219..ca06300 100644
--- a/lib/Analysis/PHITransAddr.cpp
+++ b/lib/Analysis/PHITransAddr.cpp
@@ -74,7 +74,6 @@
errs() << *I << '\n';
llvm_unreachable("Either something is missing from InstInputs or "
"CanPHITrans is wrong.");
- return false;
}
// Validate the operands of the instruction.
@@ -101,7 +100,6 @@
for (unsigned i = 0, e = InstInputs.size(); i != e; ++i)
errs() << " InstInput #" << i << " is " << *InstInputs[i] << "\n";
llvm_unreachable("This is unexpected.");
- return false;
}
// a-ok.
diff --git a/lib/Analysis/ScalarEvolution.cpp b/lib/Analysis/ScalarEvolution.cpp
index e4af225..caf3606 100644
--- a/lib/Analysis/ScalarEvolution.cpp
+++ b/lib/Analysis/ScalarEvolution.cpp
@@ -259,11 +259,9 @@
return cast<SCEVUnknown>(this)->getType();
case scCouldNotCompute:
llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
- return 0;
- default: break;
+ default:
+ llvm_unreachable("Unknown SCEV kind!");
}
- llvm_unreachable("Unknown SCEV kind!");
- return 0;
}
bool SCEV::isZero() const {
@@ -611,11 +609,8 @@
}
default:
- break;
+ llvm_unreachable("Unknown SCEV kind!");
}
-
- llvm_unreachable("Unknown SCEV kind!");
- return 0;
}
};
}
@@ -5319,7 +5314,6 @@
}
llvm_unreachable("Unknown SCEV type!");
- return 0;
}
/// getSCEVAtScope - This is a convenience function which does
@@ -5950,7 +5944,6 @@
switch (Pred) {
default:
llvm_unreachable("Unexpected ICmpInst::Predicate value!");
- break;
case ICmpInst::ICMP_SGT:
Pred = ICmpInst::ICMP_SLT;
std::swap(LHS, RHS);
@@ -6801,11 +6794,8 @@
return LoopInvariant;
case scCouldNotCompute:
llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
- return LoopVariant;
- default: break;
+ default: llvm_unreachable("Unknown SCEV kind!");
}
- llvm_unreachable("Unknown SCEV kind!");
- return LoopVariant;
}
bool ScalarEvolution::isLoopInvariant(const SCEV *S, const Loop *L) {
@@ -6887,11 +6877,9 @@
return ProperlyDominatesBlock;
case scCouldNotCompute:
llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
- return DoesNotDominateBlock;
- default: break;
+ default:
+ llvm_unreachable("Unknown SCEV kind!");
}
- llvm_unreachable("Unknown SCEV kind!");
- return DoesNotDominateBlock;
}
bool ScalarEvolution::dominates(const SCEV *S, const BasicBlock *BB) {
@@ -6937,11 +6925,9 @@
return false;
case scCouldNotCompute:
llvm_unreachable("Attempt to use a SCEVCouldNotCompute object!");
- return false;
- default: break;
+ default:
+ llvm_unreachable("Unknown SCEV kind!");
}
- llvm_unreachable("Unknown SCEV kind!");
- return false;
}
void ScalarEvolution::forgetMemoizedResults(const SCEV *S) {
diff --git a/lib/Analysis/ScalarEvolutionExpander.cpp b/lib/Analysis/ScalarEvolutionExpander.cpp
index 0f74756..f559889 100644
--- a/lib/Analysis/ScalarEvolutionExpander.cpp
+++ b/lib/Analysis/ScalarEvolutionExpander.cpp
@@ -650,7 +650,6 @@
return RelevantLoops[D] = Result;
}
llvm_unreachable("Unexpected SCEV type!");
- return 0;
}
namespace {
diff --git a/lib/Analysis/ScalarEvolutionNormalization.cpp b/lib/Analysis/ScalarEvolutionNormalization.cpp
index 2565ae7..dd2ed4f 100644
--- a/lib/Analysis/ScalarEvolutionNormalization.cpp
+++ b/lib/Analysis/ScalarEvolutionNormalization.cpp
@@ -190,7 +190,6 @@
}
llvm_unreachable("Unexpected SCEV kind!");
- return 0;
}
/// Manage recursive transformation across an expression DAG. Revisiting