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Factor out looking for prologue end into a function

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209697 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alexey Samsonov
2014-05-27 22:47:41 +00:00
parent 5013d1d5e4
commit f9e42bc162
1 changed files with 12 additions and 12 deletions
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24
lib/CodeGen/AsmPrinter/DwarfDebug.cpp
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@ -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 // Gather pre-function debug information. Assumes being called immediately
// after the function entry point has been emitted. // after the function entry point has been emitted.
void DwarfDebug::beginFunction(const MachineFunction *MF) { void DwarfDebug::beginFunction(const MachineFunction *MF) {
@ -1401,18 +1412,6 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
// Assumes in correct section after the entry point. // Assumes in correct section after the entry point.
Asm->OutStreamer.EmitLabel(FunctionBeginSym); 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. // Calculate history for local variables.
calculateDbgValueHistory(MF, Asm->TM.getRegisterInfo(), DbgValues); calculateDbgValueHistory(MF, Asm->TM.getRegisterInfo(), DbgValues);
@ -1441,6 +1440,7 @@ void DwarfDebug::beginFunction(const MachineFunction *MF) {
PrevLabel = FunctionBeginSym; PrevLabel = FunctionBeginSym;
// Record beginning of function. // Record beginning of function.
PrologEndLoc = findPrologueEndLoc(MF);
if (!PrologEndLoc.isUnknown()) { if (!PrologEndLoc.isUnknown()) {
DebugLoc FnStartDL = DebugLoc FnStartDL =
PrologEndLoc.getFnDebugLoc(MF->getFunction()->getContext()); PrologEndLoc.getFnDebugLoc(MF->getFunction()->getContext());