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Fix problem where labels were being incorrectly elided, and fix problem

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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
This commit is contained in:
Chris Lattner 2003-04-23 19:15:13 +00:00
parent f5612b76bc
commit f1acd9623c
2 changed files with 8 additions and 6 deletions
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7
lib/Target/CBackend/CBackend.cpp
View File

@ -817,7 +817,8 @@ void CWriter::printFunction(Function *F) {
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::visitReturnInst(ReturnInst &I) {
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 ";

7
lib/Target/CBackend/Writer.cpp
View File

@ -817,7 +817,8 @@ void CWriter::printFunction(Function *F) {
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::visitReturnInst(ReturnInst &I) {
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 ";