From 8a86d6da26ce399bda9acaf479fe9f920b58c7a9 Mon Sep 17 00:00:00 2001 From: Alexey Samsonov Date: Tue, 27 May 2014 22:47:41 +0000 Subject: [PATCH] Factor out looking for prologue end into a function llvm-svn: 209697 --- llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp index dad44b8..e4e19cc 100644 --- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp +++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp @@ -1364,6 +1364,17 @@ void DwarfDebug::identifyScopeMarkers() { } } +static DebugLoc findPrologueEndLoc(const MachineFunction *MF) { + // First known non-DBG_VALUE and non-frame setup location marks + // the beginning of the function body. + for (const auto &MBB : *MF) + for (const auto &MI : MBB) + if (!MI.isDebugValue() && !MI.getFlag(MachineInstr::FrameSetup) && + !MI.getDebugLoc().isUnknown()) + return MI.getDebugLoc(); + return DebugLoc(); +} + // Gather pre-function debug information. Assumes being called immediately // after the function entry point has been emitted. void DwarfDebug::beginFunction(const MachineFunction *MF) { @@ -1401,18 +1412,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) { // Assumes in correct section after the entry point. Asm->OutStreamer.EmitLabel(FunctionBeginSym); - // Collect user variables, find the end of the prologue. - for (const auto &MBB : *MF) { - for (const auto &MI : MBB) { - if (!MI.isDebugValue() && !MI.getFlag(MachineInstr::FrameSetup) && - PrologEndLoc.isUnknown() && !MI.getDebugLoc().isUnknown()) { - // First known non-DBG_VALUE and non-frame setup location marks - // the beginning of the function body. - PrologEndLoc = MI.getDebugLoc(); - } - } - } - // Calculate history for local variables. calculateDbgValueHistory(MF, Asm->TM.getRegisterInfo(), DbgValues); @@ -1441,6 +1440,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) { PrevLabel = FunctionBeginSym; // Record beginning of function. + PrologEndLoc = findPrologueEndLoc(MF); if (!PrologEndLoc.isUnknown()) { DebugLoc FnStartDL = PrologEndLoc.getFnDebugLoc(MF->getFunction()->getContext()); -- 2.7.4