Revert "[Stackmaps] Record the stack size of each function that contains a stackmap/patchpoint intrinsic."

This reverts commit r200444 to unbreak buildbots.

llvm-svn: 200445

1 files changed, 0 insertions, 24 deletions

diff --git a/llvm/lib/CodeGen/StackMaps.cpp b/llvm/lib/CodeGen/StackMaps.cpp
index 8adaf0b..79c1e7d 100644
--- a/llvm/lib/CodeGen/StackMaps.cpp
+++ b/llvm/lib/CodeGen/StackMaps.cpp
@@ -11,8 +11,6 @@
 
 #include "llvm/CodeGen/StackMaps.h"
 #include "llvm/CodeGen/AsmPrinter.h"
-#include "llvm/CodeGen/MachineFunction.h"
-#include "llvm/CodeGen/MachineFrameInfo.h"
 #include "llvm/CodeGen/MachineInstr.h"
 #include "llvm/IR/DataLayout.h"
 #include "llvm/MC/MCContext.h"
@@ -218,19 +216,12 @@ void StackMaps::recordStackMapOpers(const MachineInstr &MI, uint64_t ID,
     }
   }
 
-  // Create an expression to calculate the offset of the callsite from function
-  // entry.
   const MCExpr *CSOffsetExpr = MCBinaryExpr::CreateSub(
     MCSymbolRefExpr::Create(MILabel, OutContext),
     MCSymbolRefExpr::Create(AP.CurrentFnSym, OutContext),
     OutContext);
 
   CSInfos.push_back(CallsiteInfo(CSOffsetExpr, ID, Locations, LiveOuts));
-
-  // Record the stack size of the current function.
-  const MachineFrameInfo *MFI = AP.MF->getFrameInfo();
-  FnStackSize[AP.CurrentFnSym] =
-    MFI->hasVarSizedObjects() ? ~0U : MFI->getStackSize();
 }
 
 void StackMaps::recordStackMap(const MachineInstr &MI) {
@@ -267,11 +258,6 @@ void StackMaps::recordPatchPoint(const MachineInstr &MI) {
 /// serializeToStackMapSection conceptually populates the following fields:
 ///
 /// uint32 : Reserved (header)
-/// uint32 : NumFunctions
-/// StkSizeRecord[NumFunctions] {
-///   uint32 : Function Offset
-///   uint32 : Stack Size
-/// }
 /// uint32 : NumConstants
 /// int64  : Constants[NumConstants]
 /// uint32 : NumRecords
@@ -327,16 +313,6 @@ void StackMaps::serializeToStackMapSection() {
   // Header.
   AP.OutStreamer.EmitIntValue(0, 4);
 
-  // Num functions.
-  AP.OutStreamer.EmitIntValue(FnStackSize.size(), 4);
-
-  // Stack size entries.
-  for (FnStackSizeMap::iterator I = FnStackSize.begin(), E = FnStackSize.end();
-       I != E; ++I) {
-    AP.EmitLabelReference(I->first, 4, true);
-    AP.OutStreamer.EmitIntValue(I->second, 4);
-  }
-
   // Num constants.
   AP.OutStreamer.EmitIntValue(ConstPool.getNumConstants(), 4);