remove the JIT "NeedsExactSize" feature and supporting logic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109167 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/ExecutionEngine/JIT/JITEmitter.cpp b/lib/ExecutionEngine/JIT/JITEmitter.cpp
index 28d79da..2c95ff3 100644
--- a/lib/ExecutionEngine/JIT/JITEmitter.cpp
+++ b/lib/ExecutionEngine/JIT/JITEmitter.cpp
@@ -831,7 +831,7 @@
if (DL.isUnknown()) return;
if (!BeforePrintingInsn) return;
- const LLVMContext& Context = EmissionDetails.MF->getFunction()->getContext();
+ const LLVMContext &Context = EmissionDetails.MF->getFunction()->getContext();
if (DL.getScope(Context) != 0 && PrevDL != DL) {
JITEvent_EmittedFunctionDetails::LineStart NextLine;
@@ -859,23 +859,6 @@
return Size;
}
-static unsigned GetJumpTableSizeInBytes(MachineJumpTableInfo *MJTI, JIT *jit) {
- const std::vector<MachineJumpTableEntry> &JT = MJTI->getJumpTables();
- if (JT.empty()) return 0;
-
- unsigned NumEntries = 0;
- for (unsigned i = 0, e = JT.size(); i != e; ++i)
- NumEntries += JT[i].MBBs.size();
-
- return NumEntries * MJTI->getEntrySize(*jit->getTargetData());
-}
-
-static uintptr_t RoundUpToAlign(uintptr_t Size, unsigned Alignment) {
- if (Alignment == 0) Alignment = 1;
- // Since we do not know where the buffer will be allocated, be pessimistic.
- return Size + Alignment;
-}
-
/// addSizeOfGlobal - add the size of the global (plus any alignment padding)
/// into the running total Size.
@@ -1044,43 +1027,8 @@
uintptr_t ActualSize = 0;
// Set the memory writable, if it's not already
MemMgr->setMemoryWritable();
- if (MemMgr->NeedsExactSize()) {
- DEBUG(dbgs() << "JIT: ExactSize\n");
- const TargetInstrInfo* TII = F.getTarget().getInstrInfo();
- MachineConstantPool *MCP = F.getConstantPool();
-
- // Ensure the constant pool/jump table info is at least 4-byte aligned.
- ActualSize = RoundUpToAlign(ActualSize, 16);
-
- // Add the alignment of the constant pool
- ActualSize = RoundUpToAlign(ActualSize, MCP->getConstantPoolAlignment());
-
- // Add the constant pool size
- ActualSize += GetConstantPoolSizeInBytes(MCP, TheJIT->getTargetData());
-
- if (MachineJumpTableInfo *MJTI = F.getJumpTableInfo()) {
- // Add the aligment of the jump table info
- ActualSize = RoundUpToAlign(ActualSize,
- MJTI->getEntryAlignment(*TheJIT->getTargetData()));
-
- // Add the jump table size
- ActualSize += GetJumpTableSizeInBytes(MJTI, TheJIT);
- }
-
- // Add the alignment for the function
- ActualSize = RoundUpToAlign(ActualSize,
- std::max(F.getFunction()->getAlignment(), 8U));
-
- // Add the function size
- ActualSize += TII->GetFunctionSizeInBytes(F);
-
- DEBUG(dbgs() << "JIT: ActualSize before globals " << ActualSize << "\n");
- // Add the size of the globals that will be allocated after this function.
- // These are all the ones referenced from this function that were not
- // previously allocated.
- ActualSize += GetSizeOfGlobalsInBytes(F);
- DEBUG(dbgs() << "JIT: ActualSize after globals " << ActualSize << "\n");
- } else if (SizeEstimate > 0) {
+
+ if (SizeEstimate > 0) {
// SizeEstimate will be non-zero on reallocation attempts.
ActualSize = SizeEstimate;
}
@@ -1268,9 +1216,6 @@
SavedBufferEnd = BufferEnd;
SavedCurBufferPtr = CurBufferPtr;
- if (MemMgr->NeedsExactSize())
- ActualSize = DE->GetDwarfTableSizeInBytes(F, *this, FnStart, FnEnd);
-
BufferBegin = CurBufferPtr = MemMgr->startExceptionTable(F.getFunction(),
ActualSize);
BufferEnd = BufferBegin+ActualSize;