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Add 'llvm_unreachable' to passify GCC's understanding of the constraints

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of several newly un-defaulted switches. This also helps optimizers
(including LLVM's) recognize that every case is covered, and we should
assume as much.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@147861 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chandler Carruth
2012-01-10 18:08:01 +00:00
parent 38fdb7d9fc
commit 732f05c41f
13 changed files with 18 additions and 0 deletions
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4
lib/Bitcode/Writer/BitcodeWriter.cpp
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@ -134,6 +134,7 @@ static unsigned GetEncodedOrdering(AtomicOrdering Ordering) {
case AcquireRelease: return bitc::ORDERING_ACQREL;
case SequentiallyConsistent: return bitc::ORDERING_SEQCST;
}
llvm_unreachable("Invalid ordering");
}
static unsigned GetEncodedSynchScope(SynchronizationScope SynchScope) {
@ -141,6 +142,7 @@ static unsigned GetEncodedSynchScope(SynchronizationScope SynchScope) {
case SingleThread: return bitc::SYNCHSCOPE_SINGLETHREAD;
case CrossThread: return bitc::SYNCHSCOPE_CROSSTHREAD;
}
llvm_unreachable("Invalid synch scope");
}
static void WriteStringRecord(unsigned Code, StringRef Str,
@ -372,6 +374,7 @@ static unsigned getEncodedLinkage(const GlobalValue *GV) {
case GlobalValue::LinkerPrivateWeakLinkage: return 14;
case GlobalValue::LinkerPrivateWeakDefAutoLinkage: return 15;
}
llvm_unreachable("Invalid linkage");
}
static unsigned getEncodedVisibility(const GlobalValue *GV) {
@ -380,6 +383,7 @@ static unsigned getEncodedVisibility(const GlobalValue *GV) {
case GlobalValue::HiddenVisibility: return 1;
case GlobalValue::ProtectedVisibility: return 2;
}
llvm_unreachable("Invalid visibility");
}
// Emit top-level description of module, including target triple, inline asm,