8132318: -XX:TraceJumps is broken on Sparc

Reviewed-by: kvn, thartmann

hotspot/src/cpu/ppc/vm/vtableStubs_ppc_64.cpp

@@ -243,7 +243,7 @@ VtableStub* VtableStubs::create_itable_stub(int vtable_index) {
 }
 
 int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
-  if (TraceJumps || DebugVtables || CountCompiledCalls || VerifyOops) {
+  if (DebugVtables || CountCompiledCalls || VerifyOops) {
     return 1000;
   } else {
     int decode_klass_size = MacroAssembler::instr_size_for_decode_klass_not_null();

hotspot/src/cpu/sparc/vm/compiledIC_sparc.cpp

@@ -77,8 +77,7 @@ int CompiledStaticCall::to_interp_stub_size() {
   // This doesn't need to be accurate but it must be larger or equal to
   // the real size of the stub.
   return (NativeMovConstReg::instruction_size +  // sethi/setlo;
-          NativeJump::instruction_size + // sethi; jmp; nop
+          NativeJump::instruction_size); // sethi; jmp; nop
-          (TraceJumps ? 20 * BytesPerInstWord : 0) );
 }
 
 // Relocation entries for call stub, compiled java to interpreter.

hotspot/src/cpu/sparc/vm/icBuffer_sparc.cpp

@@ -33,12 +33,10 @@
 
 int InlineCacheBuffer::ic_stub_code_size() {
 #ifdef _LP64
-  if (TraceJumps) return 600 * wordSize;
   return (NativeMovConstReg::instruction_size +  // sethi;add
           NativeJump::instruction_size +          // sethi; jmp; delay slot
           (1*BytesPerInstWord) + 1);            // flush + 1 extra byte
 #else
-  if (TraceJumps) return 300 * wordSize;
   return (2+2+ 1) * wordSize + 1; // set/jump_to/nop + 1 byte so that code_end can be set in CodeBuffer
 #endif
 }

hotspot/src/cpu/sparc/vm/macroAssembler_sparc.cpp

@@ -184,72 +184,10 @@ void MacroAssembler::null_check(Register reg, int offset) {
 
 void MacroAssembler::jmp2(Register r1, Register r2, const char* file, int line ) {
   assert_not_delayed();
-  // This can only be traceable if r1 & r2 are visible after a window save
-  if (TraceJumps) {
-#ifndef PRODUCT
-    save_frame(0);
-    verify_thread();
-    ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0);
-    add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1);
-    sll(O0, exact_log2(4*sizeof(intptr_t)), O2);
-    add(O2, O1, O1);
-
-    add(r1->after_save(), r2->after_save(), O2);
-    set((intptr_t)file, O3);
-    set(line, O4);
-    Label L;
-    // get nearby pc, store jmp target
-    call(L, relocInfo::none);  // No relocation for call to pc+0x8
-    delayed()->st(O2, O1, 0);
-    bind(L);
-
-    // store nearby pc
-    st(O7, O1, sizeof(intptr_t));
-    // store file
-    st(O3, O1, 2*sizeof(intptr_t));
-    // store line
-    st(O4, O1, 3*sizeof(intptr_t));
-    add(O0, 1, O0);
-    and3(O0, JavaThread::jump_ring_buffer_size  - 1, O0);
-    st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()));
-    restore();
-#endif /* PRODUCT */
-  }
   jmpl(r1, r2, G0);
 }
 void MacroAssembler::jmp(Register r1, int offset, const char* file, int line ) {
   assert_not_delayed();
-  // This can only be traceable if r1 is visible after a window save
-  if (TraceJumps) {
-#ifndef PRODUCT
-    save_frame(0);
-    verify_thread();
-    ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0);
-    add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1);
-    sll(O0, exact_log2(4*sizeof(intptr_t)), O2);
-    add(O2, O1, O1);
-
-    add(r1->after_save(), offset, O2);
-    set((intptr_t)file, O3);
-    set(line, O4);
-    Label L;
-    // get nearby pc, store jmp target
-    call(L, relocInfo::none);  // No relocation for call to pc+0x8
-    delayed()->st(O2, O1, 0);
-    bind(L);
-
-    // store nearby pc
-    st(O7, O1, sizeof(intptr_t));
-    // store file
-    st(O3, O1, 2*sizeof(intptr_t));
-    // store line
-    st(O4, O1, 3*sizeof(intptr_t));
-    add(O0, 1, O0);
-    and3(O0, JavaThread::jump_ring_buffer_size  - 1, O0);
-    st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()));
-    restore();
-#endif /* PRODUCT */
-  }
   jmp(r1, offset);
 }
 
@@ -260,44 +198,7 @@ void MacroAssembler::jumpl(const AddressLiteral& addrlit, Register temp, Registe
   // variable length instruction streams.
   patchable_sethi(addrlit, temp);
   Address a(temp, addrlit.low10() + offset);  // Add the offset to the displacement.
-  if (TraceJumps) {
+  jmpl(a.base(), a.disp(), d);
-#ifndef PRODUCT
-    // Must do the add here so relocation can find the remainder of the
-    // value to be relocated.
-    add(a.base(), a.disp(), a.base(), addrlit.rspec(offset));
-    save_frame(0);
-    verify_thread();
-    ld(G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()), O0);
-    add(G2_thread, in_bytes(JavaThread::jmp_ring_offset()), O1);
-    sll(O0, exact_log2(4*sizeof(intptr_t)), O2);
-    add(O2, O1, O1);
-
-    set((intptr_t)file, O3);
-    set(line, O4);
-    Label L;
-
-    // get nearby pc, store jmp target
-    call(L, relocInfo::none);  // No relocation for call to pc+0x8
-    delayed()->st(a.base()->after_save(), O1, 0);
-    bind(L);
-
-    // store nearby pc
-    st(O7, O1, sizeof(intptr_t));
-    // store file
-    st(O3, O1, 2*sizeof(intptr_t));
-    // store line
-    st(O4, O1, 3*sizeof(intptr_t));
-    add(O0, 1, O0);
-    and3(O0, JavaThread::jump_ring_buffer_size  - 1, O0);
-    st(O0, G2_thread, in_bytes(JavaThread::jmp_ring_index_offset()));
-    restore();
-    jmpl(a.base(), G0, d);
-#else
-    jmpl(a.base(), a.disp(), d);
-#endif /* PRODUCT */
-  } else {
-    jmpl(a.base(), a.disp(), d);
-  }
 }
 
 void MacroAssembler::jump(const AddressLiteral& addrlit, Register temp, int offset, const char* file, int line) {

hotspot/src/cpu/sparc/vm/macroAssembler_sparc.hpp

@@ -703,8 +703,8 @@ class MacroAssembler : public Assembler {
 
   inline void tst( Register s );
 
-  inline void ret(  bool trace = TraceJumps );
+  inline void ret(  bool trace = false );
-  inline void retl( bool trace = TraceJumps );
+  inline void retl( bool trace = false );
 
   // Required platform-specific helpers for Label::patch_instructions.
   // They _shadow_ the declarations in AbstractAssembler, which are undefined.

hotspot/src/cpu/sparc/vm/nativeInst_sparc.cpp

@@ -760,8 +760,7 @@ void NativeJump::verify() {
   Register rd = inv_rd(i0);
 #ifndef _LP64
   if (!(is_op2(i0, Assembler::sethi_op2) && rd != G0 &&
-        (is_op3(i1, Assembler::jmpl_op3, Assembler::arith_op) ||
+        (is_op3(i1, Assembler::jmpl_op3, Assembler::arith_op)) &&
-        (TraceJumps && is_op3(i1, Assembler::add_op3, Assembler::arith_op))) &&
         inv_immed(i1) && (unsigned)get_simm13(i1) < (1 << 10) &&
         rd == inv_rs1(i1))) {
     fatal("not a jump_to instruction");

hotspot/src/cpu/sparc/vm/sharedRuntime_sparc.cpp

@@ -3368,9 +3368,7 @@ SafepointBlob* SharedRuntime::generate_handler_blob(address call_ptr, int poll_t
   // setup code generation tools
   // Measured 8/7/03 at 896 in 32bit debug build (no VerifyThread)
   // Measured 8/7/03 at 1080 in 32bit debug build (VerifyThread)
-  // even larger with TraceJumps
+  CodeBuffer buffer("handler_blob", 1600, 512);
-  int pad = TraceJumps ? 512 : 0;
-  CodeBuffer buffer("handler_blob", 1600 + pad, 512);
   MacroAssembler* masm                = new MacroAssembler(&buffer);
   int             frame_size_words;
   OopMapSet *oop_maps = new OopMapSet();
@@ -3462,9 +3460,7 @@ RuntimeStub* SharedRuntime::generate_resolve_blob(address destination, const cha
   // setup code generation tools
   // Measured 8/7/03 at 896 in 32bit debug build (no VerifyThread)
   // Measured 8/7/03 at 1080 in 32bit debug build (VerifyThread)
-  // even larger with TraceJumps
+  CodeBuffer buffer(name, 1600, 512);
-  int pad = TraceJumps ? 512 : 0;
-  CodeBuffer buffer(name, 1600 + pad, 512);
   MacroAssembler* masm                = new MacroAssembler(&buffer);
   int             frame_size_words;
   OopMapSet *oop_maps = new OopMapSet();

hotspot/src/cpu/sparc/vm/sparc.ad

@@ -501,16 +501,10 @@ class HandlerImpl {
   static int emit_deopt_handler(CodeBuffer& cbuf);
 
   static uint size_exception_handler() {
-    if (TraceJumps) {
-      return (400); // just a guess
-    }
     return ( NativeJump::instruction_size ); // sethi;jmp;nop
   }
 
   static uint size_deopt_handler() {
-    if (TraceJumps) {
-      return (400); // just a guess
-    }
     return ( 4+  NativeJump::instruction_size ); // save;sethi;jmp;restore
   }
 };
@@ -2661,8 +2655,7 @@ encode %{
 
       // Emit stub for static call.
       address stub = CompiledStaticCall::emit_to_interp_stub(cbuf);
-      // Stub does not fit into scratch buffer if TraceJumps is enabled
+      if (stub == NULL) {
-      if (stub == NULL && !(TraceJumps && Compile::current()->in_scratch_emit_size())) {
         ciEnv::current()->record_failure("CodeCache is full");
         return;
       }

hotspot/src/cpu/sparc/vm/templateInterpreterGenerator_sparc.cpp

@@ -1560,13 +1560,7 @@ address TemplateInterpreterGenerator::generate_native_entry(bool synchronized) {
     __ bind(ok);
   }
 #endif
-  if (TraceJumps) {
+  __ jmp(Lscratch, 0);
-    // Move target to register that is recordable
-    __ mov(Lscratch, G3_scratch);
-    __ JMP(G3_scratch, 0);
-  } else {
-    __ jmp(Lscratch, 0);
-  }
   __ delayed()->nop();
 
 

hotspot/src/cpu/sparc/vm/vtableStubs_sparc.cpp

@@ -221,7 +221,7 @@ VtableStub* VtableStubs::create_itable_stub(int itable_index) {
 
 
 int VtableStub::pd_code_size_limit(bool is_vtable_stub) {
-  if (TraceJumps || DebugVtables || CountCompiledCalls || VerifyOops) return 1000;
+  if (DebugVtables || CountCompiledCalls || VerifyOops) return 1000;
   else {
     const int slop = 2*BytesPerInstWord; // sethi;add  (needed for long offsets)
     if (is_vtable_stub) {

hotspot/src/os_cpu/solaris_sparc/vm/os_solaris_sparc.cpp

@@ -545,10 +545,6 @@ JVM_handle_solaris_signal(int sig, siginfo_t* info, void* ucVoid,
     // factor me: setPC
     os::Solaris::ucontext_set_pc(uc, stub);
 
-#ifndef PRODUCT
-    if (TraceJumps) thread->record_jump(stub, NULL, __FILE__, __LINE__);
-#endif /* PRODUCT */
-
     return true;
   }
 

hotspot/src/share/vm/opto/output.cpp

@@ -952,7 +952,7 @@ CodeBuffer* Compile::init_buffer(uint* blk_starts) {
   // Set the initially allocated size
   int  code_req   = initial_code_capacity;
   int  locs_req   = initial_locs_capacity;
-  int  stub_req   = TraceJumps ? initial_stub_capacity * 10 : initial_stub_capacity;
+  int  stub_req   = initial_stub_capacity;
   int  const_req  = initial_const_capacity;
 
   int  pad_req    = NativeCall::instruction_size;

hotspot/src/share/vm/runtime/globals.hpp

@@ -802,9 +802,6 @@ public:
   develop(bool, TracePcPatching, false,                                     \
           "Trace usage of frame::patch_pc")                                 \
                                                                             \
-  develop(bool, TraceJumps, false,                                          \
-          "Trace assembly jumps in thread ring buffer")                     \
-                                                                            \
   develop(bool, TraceRelocator, false,                                      \
           "Trace the bytecode relocator")                                   \
                                                                             \