Revert commits related to stack warning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@183579 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/PrologEpilogInserter.cpp b/lib/CodeGen/PrologEpilogInserter.cpp
index 3a77af0cc49097d933486cb23de4e50d8cce993c..959dd7df58eee94f2605c72d8631f9897d33a456 100644 (file)
--- a/lib/CodeGen/PrologEpilogInserter.cpp
+++ b/lib/CodeGen/PrologEpilogInserter.cpp
@@ -35,7 +35,6 @@
 #include "llvm/Support/CommandLine.h"
 #include "llvm/Support/Compiler.h"
 #include "llvm/Support/Debug.h"
-#include "llvm/Support/raw_ostream.h"
 #include "llvm/Target/TargetFrameLowering.h"
 #include "llvm/Target/TargetInstrInfo.h"
 #include "llvm/Target/TargetMachine.h"
@@ -47,11 +46,6 @@ using namespace llvm;
 char PEI::ID = 0;
 char &llvm::PrologEpilogCodeInserterID = PEI::ID;
 
-static cl::opt<uint64_t>
-WarnStackSize("warn-stack-size", cl::Hidden,
-              cl::desc("Warn for stack size bigger than the given"
-                       " number"));
-
 INITIALIZE_PASS_BEGIN(PEI, "prologepilog",
                 "Prologue/Epilogue Insertion", false, false)
 INITIALIZE_PASS_DEPENDENCY(MachineLoopInfo)
@@ -134,13 +128,6 @@ bool PEI::runOnMachineFunction(MachineFunction &Fn) {
   // Clear any vregs created by virtual scavenging.
   Fn.getRegInfo().clearVirtRegs();
 
-  // Warn on stack size when we exceeds the given limit.
-  MachineFrameInfo *MFI = Fn.getFrameInfo();
-  if (WarnStackSize.getNumOccurrences() > 0 &&
-      WarnStackSize < MFI->getStackSize())
-    errs() << "warning: Stack size limit exceeded (" << MFI->getStackSize()
-           << ") in " << Fn.getName()  << ".\n";
-
   delete RS;
   clearAllSets();
   return true;

diff --git a/test/CodeGen/ARM/warn-stack.ll b/test/CodeGen/ARM/warn-stack.ll
deleted file mode 100644 (file)
index 9538bbf..0000000
--- a/test/CodeGen/ARM/warn-stack.ll
+++ /dev/null
@@ -1,24 +0,0 @@
-; RUN: llc -mtriple thumbv7-apple-ios3.0.0 -warn-stack-size=80 < %s 2>&1 >/dev/null | FileCheck %s
-; Check the internal option that warns when the stack size exceeds the
-; given amount.
-; <rdar://13987214>
-
-; CHECK-NOT: nowarn
-define void @nowarn() nounwind ssp {
-entry:
-  %buffer = alloca [12 x i8], align 1
-  %arraydecay = getelementptr inbounds [12 x i8]* %buffer, i64 0, i64 0
-  call void @doit(i8* %arraydecay) nounwind
-  ret void
-}
-
-; CHECK: warning: Stack size limit exceeded (96) in warn.
-define void @warn() nounwind ssp {
-entry:
-  %buffer = alloca [80 x i8], align 1
-  %arraydecay = getelementptr inbounds [80 x i8]* %buffer, i64 0, i64 0
-  call void @doit(i8* %arraydecay) nounwind
-  ret void
-}
-
-declare void @doit(i8*)

diff --git a/test/CodeGen/X86/warn-stack.ll b/test/CodeGen/X86/warn-stack.ll
deleted file mode 100644 (file)
index 6c5b0a4..0000000
--- a/test/CodeGen/X86/warn-stack.ll
+++ /dev/null
@@ -1,24 +0,0 @@
-; RUN: llc -mtriple x86_64-apple-10.8.0 -warn-stack-size=80 < %s 2>&1 >/dev/null | FileCheck %s
-; Check the internal option that warns when the stack size exceeds the
-; given amount.
-; <rdar://13987214>
-
-; CHECK-NOT: nowarn
-define void @nowarn() nounwind ssp {
-entry:
-  %buffer = alloca [12 x i8], align 1
-  %arraydecay = getelementptr inbounds [12 x i8]* %buffer, i64 0, i64 0
-  call void @doit(i8* %arraydecay) nounwind
-  ret void
-}
-
-; CHECK: warning: Stack size limit exceeded (88) in warn.
-define void @warn() nounwind ssp {
-entry:
-  %buffer = alloca [80 x i8], align 1
-  %arraydecay = getelementptr inbounds [80 x i8]* %buffer, i64 0, i64 0
-  call void @doit(i8* %arraydecay) nounwind
-  ret void
-}
-
-declare void @doit(i8*)