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authorManman Ren <manman.ren@gmail.com>2013-12-09 21:00:02 +0000
committerManman Ren <manman.ren@gmail.com>2013-12-09 21:00:02 +0000
commitc877b10446669bf107c19cab78b920ce9cffb989 (patch)
tree42c93c6c1ffa356549fff916ed15d478d7560c6a /lib
parent41245b4e2a2c71d764534b41bc38fea7c5cf6774 (diff)
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Merging r195505:
------------------------------------------------------------------------ r195505 | mren | 2013-11-22 14:06:31 -0800 (Fri, 22 Nov 2013) | 8 lines Debug Info: move StripDebugInfo from StripSymbols.cpp to DebugInfo.cpp. We can share the implementation between StripSymbols and dropping debug info for metadata versions that do not match. Also update the comments to match the implementation. A follow-on patch will drop the "Debug Info Version" module flag in StripDebugInfo. ------------------------------------------------------------------------ git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_34@196816 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
-rw-r--r--lib/IR/DebugInfo.cpp52
-rw-r--r--lib/Transforms/IPO/StripSymbols.cpp51
2 files changed, 52 insertions, 51 deletions
diff --git a/lib/IR/DebugInfo.cpp b/lib/IR/DebugInfo.cpp
index 692e236..5dcc6f6 100644
--- a/lib/IR/DebugInfo.cpp
+++ b/lib/IR/DebugInfo.cpp
@@ -1426,3 +1426,55 @@ DIScopeRef DIDescriptor::getFieldAs<DIScopeRef>(unsigned Elt) const {
template <> DITypeRef DIDescriptor::getFieldAs<DITypeRef>(unsigned Elt) const {
return DITypeRef(getField(DbgNode, Elt));
}
+
+/// Strip debug info in the module if it exists.
+/// To do this, we remove all calls to the debugger intrinsics and any named
+/// metadata for debugging. We also remove debug locations for instructions.
+/// Return true if module is modified.
+bool llvm::StripDebugInfo(Module &M) {
+
+ bool Changed = false;
+
+ // Remove all of the calls to the debugger intrinsics, and remove them from
+ // the module.
+ if (Function *Declare = M.getFunction("llvm.dbg.declare")) {
+ while (!Declare->use_empty()) {
+ CallInst *CI = cast<CallInst>(Declare->use_back());
+ CI->eraseFromParent();
+ }
+ Declare->eraseFromParent();
+ Changed = true;
+ }
+
+ if (Function *DbgVal = M.getFunction("llvm.dbg.value")) {
+ while (!DbgVal->use_empty()) {
+ CallInst *CI = cast<CallInst>(DbgVal->use_back());
+ CI->eraseFromParent();
+ }
+ DbgVal->eraseFromParent();
+ Changed = true;
+ }
+
+ for (Module::named_metadata_iterator NMI = M.named_metadata_begin(),
+ NME = M.named_metadata_end(); NMI != NME;) {
+ NamedMDNode *NMD = NMI;
+ ++NMI;
+ if (NMD->getName().startswith("llvm.dbg.")) {
+ NMD->eraseFromParent();
+ Changed = true;
+ }
+ }
+
+ for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI)
+ for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE;
+ ++FI)
+ for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE;
+ ++BI) {
+ if (!BI->getDebugLoc().isUnknown()) {
+ Changed = true;
+ BI->setDebugLoc(DebugLoc());
+ }
+ }
+
+ return Changed;
+}
diff --git a/lib/Transforms/IPO/StripSymbols.cpp b/lib/Transforms/IPO/StripSymbols.cpp
index 1792aa8..c4f5cfc 100644
--- a/lib/Transforms/IPO/StripSymbols.cpp
+++ b/lib/Transforms/IPO/StripSymbols.cpp
@@ -231,57 +231,6 @@ static bool StripSymbolNames(Module &M, bool PreserveDbgInfo) {
return true;
}
-// StripDebugInfo - Strip debug info in the module if it exists.
-// To do this, we remove llvm.dbg.func.start, llvm.dbg.stoppoint, and
-// llvm.dbg.region.end calls, and any globals they point to if now dead.
-static bool StripDebugInfo(Module &M) {
-
- bool Changed = false;
-
- // Remove all of the calls to the debugger intrinsics, and remove them from
- // the module.
- if (Function *Declare = M.getFunction("llvm.dbg.declare")) {
- while (!Declare->use_empty()) {
- CallInst *CI = cast<CallInst>(Declare->use_back());
- CI->eraseFromParent();
- }
- Declare->eraseFromParent();
- Changed = true;
- }
-
- if (Function *DbgVal = M.getFunction("llvm.dbg.value")) {
- while (!DbgVal->use_empty()) {
- CallInst *CI = cast<CallInst>(DbgVal->use_back());
- CI->eraseFromParent();
- }
- DbgVal->eraseFromParent();
- Changed = true;
- }
-
- for (Module::named_metadata_iterator NMI = M.named_metadata_begin(),
- NME = M.named_metadata_end(); NMI != NME;) {
- NamedMDNode *NMD = NMI;
- ++NMI;
- if (NMD->getName().startswith("llvm.dbg.")) {
- NMD->eraseFromParent();
- Changed = true;
- }
- }
-
- for (Module::iterator MI = M.begin(), ME = M.end(); MI != ME; ++MI)
- for (Function::iterator FI = MI->begin(), FE = MI->end(); FI != FE;
- ++FI)
- for (BasicBlock::iterator BI = FI->begin(), BE = FI->end(); BI != BE;
- ++BI) {
- if (!BI->getDebugLoc().isUnknown()) {
- Changed = true;
- BI->setDebugLoc(DebugLoc());
- }
- }
-
- return Changed;
-}
-
bool StripSymbols::runOnModule(Module &M) {
bool Changed = false;
Changed |= StripDebugInfo(M);