Fix problem where labels were being incorrectly elided, and fix problem
where PHI copies where not emitted for the default label of switch insts
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5882 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index f9ddc7d..b9e27ac 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -817,7 +817,8 @@
for (Value::use_iterator UI = BB->use_begin(), UE = BB->use_end();
UI != UE; ++UI)
if (TerminatorInst *TI = dyn_cast<TerminatorInst>(*UI))
- if (TI != Prev->getTerminator()) {
+ if (TI != Prev->getTerminator() ||
+ isa<SwitchInst>(Prev->getTerminator())) {
NeedsLabel = true;
break;
}
@@ -867,8 +868,8 @@
void CWriter::visitSwitchInst(SwitchInst &SI) {
Out << " switch (";
writeOperand(SI.getOperand(0));
- Out << ") {\n default: goto ";
- writeOperand(SI.getDefaultDest());
+ Out << ") {\n default:\n";
+ printBranchToBlock(SI.getParent(), SI.getDefaultDest(), 2);
Out << ";\n";
for (unsigned i = 2, e = SI.getNumOperands(); i != e; i += 2) {
Out << " case ";