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Factor out looking for prologue end into a function
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209697 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1364,6 +1364,17 @@ void DwarfDebug::identifyScopeMarkers() {
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}
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}
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static DebugLoc findPrologueEndLoc(const MachineFunction *MF) {
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// First known non-DBG_VALUE and non-frame setup location marks
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// the beginning of the function body.
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for (const auto &MBB : *MF)
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for (const auto &MI : MBB)
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if (!MI.isDebugValue() && !MI.getFlag(MachineInstr::FrameSetup) &&
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!MI.getDebugLoc().isUnknown())
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return MI.getDebugLoc();
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return DebugLoc();
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}
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// Gather pre-function debug information. Assumes being called immediately
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// after the function entry point has been emitted.
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void DwarfDebug::beginFunction(const MachineFunction *MF) {
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@ -1401,18 +1412,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
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// Assumes in correct section after the entry point.
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Asm->OutStreamer.EmitLabel(FunctionBeginSym);
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// Collect user variables, find the end of the prologue.
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for (const auto &MBB : *MF) {
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for (const auto &MI : MBB) {
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if (!MI.isDebugValue() && !MI.getFlag(MachineInstr::FrameSetup) &&
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PrologEndLoc.isUnknown() && !MI.getDebugLoc().isUnknown()) {
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// First known non-DBG_VALUE and non-frame setup location marks
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// the beginning of the function body.
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PrologEndLoc = MI.getDebugLoc();
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}
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}
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}
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// Calculate history for local variables.
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calculateDbgValueHistory(MF, Asm->TM.getRegisterInfo(), DbgValues);
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@ -1441,6 +1440,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
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PrevLabel = FunctionBeginSym;
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// Record beginning of function.
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PrologEndLoc = findPrologueEndLoc(MF);
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if (!PrologEndLoc.isUnknown()) {
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DebugLoc FnStartDL =
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PrologEndLoc.getFnDebugLoc(MF->getFunction()->getContext());
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