From b773203fb58f3ef282fb69c832d8710cab5bc82d Mon Sep 17 00:00:00 2001
From: patrick <patrick@openbsd.org>
Date: Sun, 27 Jan 2019 16:42:12 +0000
Subject: Import LLVM 7.0.1 release including clang, lld and lldb.

---
 .../lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp    | 30 ++++------------------
 1 file changed, 5 insertions(+), 25 deletions(-)

(limited to 'gnu/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp')

diff --git a/gnu/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp b/gnu/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
index 2e5c2244793..82e14dc13cb 100644
--- a/gnu/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
+++ b/gnu/llvm/lib/CodeGen/AsmPrinter/DebugHandlerBase.cpp
@@ -25,6 +25,8 @@
 
 using namespace llvm;
 
+#define DEBUG_TYPE "dwarfdebug"
+
 Optional<DbgVariableLocation>
 DbgVariableLocation::extractFromMachineInstruction(
     const MachineInstr &Instruction) {
@@ -123,29 +125,6 @@ MCSymbol *DebugHandlerBase::getLabelAfterInsn(const MachineInstr *MI) {
   return LabelsAfterInsn.lookup(MI);
 }
 
-int DebugHandlerBase::fragmentCmp(const DIExpression *P1,
-                                  const DIExpression *P2) {
-  auto Fragment1 = *P1->getFragmentInfo();
-  auto Fragment2 = *P2->getFragmentInfo();
-  unsigned l1 = Fragment1.OffsetInBits;
-  unsigned l2 = Fragment2.OffsetInBits;
-  unsigned r1 = l1 + Fragment1.SizeInBits;
-  unsigned r2 = l2 + Fragment2.SizeInBits;
-  if (r1 <= l2)
-    return -1;
-  else if (r2 <= l1)
-    return 1;
-  else
-    return 0;
-}
-
-bool DebugHandlerBase::fragmentsOverlap(const DIExpression *P1,
-                                        const DIExpression *P2) {
-  if (!P1->isFragment() || !P2->isFragment())
-    return true;
-  return fragmentCmp(P1, P2) == 0;
-}
-
 /// If this type is derived from a base type then return base type size.
 uint64_t DebugHandlerBase::getBaseTypeSize(const DITypeRef TyRef) {
   DIType *Ty = TyRef.resolve();
@@ -213,6 +192,7 @@ void DebugHandlerBase::beginFunction(const MachineFunction *MF) {
   assert(DbgValues.empty() && "DbgValues map wasn't cleaned!");
   calculateDbgValueHistory(MF, Asm->MF->getSubtarget().getRegisterInfo(),
                            DbgValues);
+  LLVM_DEBUG(DbgValues.dump());
 
   // Request labels for the full history.
   for (const auto &I : DbgValues) {
@@ -232,8 +212,8 @@ void DebugHandlerBase::beginFunction(const MachineFunction *MF) {
           const DIExpression *Fragment = I->first->getDebugExpression();
           if (std::all_of(Ranges.begin(), I,
                           [&](DbgValueHistoryMap::InstrRange Pred) {
-                            return !fragmentsOverlap(
-                                Fragment, Pred.first->getDebugExpression());
+                            return !Fragment->fragmentsOverlap(
+                                Pred.first->getDebugExpression());
                           }))
             LabelsBeforeInsn[I->first] = Asm->getFunctionBegin();
           else
-- 
cgit v1.2.3-59-g8ed1b