From f9bccc2f1a78ad1ffecc1e95c47a30e6adb3ef5c Mon Sep 17 00:00:00 2001 From: Adrian Prantl Date: Thu, 2 May 2013 17:27:49 +0000 Subject: [PATCH] Provide an API to temporarily suppress DebugLocations from being attached to emitted instructions. Use this if you want an instruction to be counted towards the prologue or if there is no useful source location. rdar://problem/13442648 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180929 91177308-0d34-0410-b5e6-96231b3b80d8 --- include/llvm/IR/IRBuilder.h | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/include/llvm/IR/IRBuilder.h b/include/llvm/IR/IRBuilder.h index 189ba3d305c..f11d3b4e0b2 100644 --- a/include/llvm/IR/IRBuilder.h +++ b/include/llvm/IR/IRBuilder.h @@ -49,6 +49,10 @@ protected: class IRBuilderBase { DebugLoc CurDbgLocation; protected: + /// Save the current debug location here while we are suppressing + /// line table entries. + llvm::DebugLoc SavedDbgLocation; + BasicBlock *BB; BasicBlock::iterator InsertPt; LLVMContext &Context; @@ -113,6 +117,23 @@ public: CurDbgLocation = L; } + /// \brief Temporarily suppress DebugLocations from being attached + /// to emitted instructions, until the next call to + /// SetCurrentDebugLocation() or EnableDebugLocations(). Use this + /// if you want an instruction to be counted towards the prologue or + /// if there is no useful source location. + void DisableDebugLocations() { + llvm::DebugLoc Empty; + SavedDbgLocation = getCurrentDebugLocation(); + SetCurrentDebugLocation(Empty); + } + + /// \brief Restore the previously saved DebugLocation. + void EnableDebugLocations() { + assert(CurDbgLocation.isUnknown()); + SetCurrentDebugLocation(SavedDbgLocation); + } + /// \brief Get location information used by debugging information. DebugLoc getCurrentDebugLocation() const { return CurDbgLocation; } -- 2.34.1