Modified switch generation so that only the phi values associated with the
destination basic block are copied.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@17212 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/CBackend/Writer.cpp b/lib/Target/CBackend/Writer.cpp
index 7af9bfe..16d83c3 100644
--- a/lib/Target/CBackend/Writer.cpp
+++ b/lib/Target/CBackend/Writer.cpp
@@ -1194,11 +1194,11 @@
}
void CWriter::visitSwitchInst(SwitchInst &SI) {
- printPHICopiesForSuccessors(SI.getParent(), 0);
Out << " switch (";
writeOperand(SI.getOperand(0));
Out << ") {\n default:\n";
+ printPHICopiesForSuccessor (SI.getParent(), SI.getDefaultDest(), 2);
printBranchToBlock(SI.getParent(), SI.getDefaultDest(), 2);
Out << ";\n";
for (unsigned i = 2, e = SI.getNumOperands(); i != e; i += 2) {
@@ -1206,6 +1206,7 @@
writeOperand(SI.getOperand(i));
Out << ":\n";
BasicBlock *Succ = cast<BasicBlock>(SI.getOperand(i+1));
+ printPHICopiesForSuccessor (SI.getParent(), Succ, 2);
printBranchToBlock(SI.getParent(), Succ, 2);
if (Succ == SI.getParent()->getNext())
Out << " break;\n";