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Fix -strip-debug-declare to work when there are 

llvm.global.variable's but no llvm.declare's.

llvm-svn: 66977
This commit is contained in:
Dale Johannesen 2009-03-13 22:59:47 +00:00
parent 94419d6fdd
commit a4ac735531
1 changed files with 17 additions and 19 deletions
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36
llvm/lib/Transforms/IPO/StripSymbols.cpp
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@ -368,29 +368,27 @@ bool StripNonDebugSymbols::runOnModule(Module &M) {
bool StripDebugDeclare::runOnModule(Module &M) {
Function *Declare = M.getFunction("llvm.dbg.declare");
if (!Declare)
return false;
std::vector<Constant*> DeadConstants;
while (!Declare->use_empty()) {
CallInst *CI = cast<CallInst>(Declare->use_back());
Value *Arg1 = CI->getOperand(1);
Value *Arg2 = CI->getOperand(2);
assert(CI->use_empty() && "llvm.dbg intrinsic should have void result");
CI->eraseFromParent();
if (Arg1->use_empty()) {
if (Constant *C = dyn_cast<Constant>(Arg1))
DeadConstants.push_back(C);
else
RecursivelyDeleteTriviallyDeadInstructions(Arg1, NULL);
if (Declare) {
while (!Declare->use_empty()) {
CallInst *CI = cast<CallInst>(Declare->use_back());
Value *Arg1 = CI->getOperand(1);
Value *Arg2 = CI->getOperand(2);
assert(CI->use_empty() && "llvm.dbg intrinsic should have void result");
CI->eraseFromParent();
if (Arg1->use_empty()) {
if (Constant *C = dyn_cast<Constant>(Arg1))
DeadConstants.push_back(C);
else
RecursivelyDeleteTriviallyDeadInstructions(Arg1, NULL);
}
if (Arg2->use_empty())
if (Constant *C = dyn_cast<Constant>(Arg2))
DeadConstants.push_back(C);
}
if (Arg2->use_empty())
if (Constant *C = dyn_cast<Constant>(Arg2))
DeadConstants.push_back(C);
Declare->eraseFromParent();
}
Declare->eraseFromParent();
// Delete all llvm.dbg.global_variables.
for (Module::global_iterator I = M.global_begin(), E = M.global_end();