First of all we create a random binary file with 100.000.000 bytes. I used Python for this:
import random
import os
def Main():
length = 100000000
randomArray = random.randbytes(length)
desktopPath = os.path.normpath(os.path.expanduser("~/Desktop"))
fullPath=os.path.join(desktopPath,"RandomFile.dat")
if os.path.isfile(fullPath):
print("File already exists.")
return
with open(fullPath, "wb") as file:
file.write(randomArray)
print("The file has been created.")
Main()
After this we find how many of these bytes were greater than 100 using C# and Java.
C#:
using System.Diagnostics;
namespace TestYouTube
{
public class Program
{
//finished
public static void Main(string[] args)
{
string desktopPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
string fullPath = Path.Combine(desktopPath, "RandomFile.dat");
if (!File.Exists(fullPath))
{
Console.WriteLine("The file does not exist.");
return;
}
byte[] byteArray = File.ReadAllBytes(fullPath);
int[] intArray = ByteArrayToIntArray(byteArray);
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
int count = TestSpeed(intArray);
stopwatch.Stop();
Console.WriteLine($"Count = {count}");
Console.WriteLine($"Elapsed: {stopwatch.Elapsed.TotalSeconds} seconds");
Console.ReadLine();
}
//finished
private static int[] ByteArrayToIntArray(byte[] byteArray)
{
if (byteArray == null) return null;
if (byteArray.Length == 0) return Array.Empty<int>();
int[] intArray = new int[byteArray.Length];
for (int i = 0; i < intArray.Length; i++)
{
intArray[i] = byteArray[i];
}
return intArray;
}
//finished
private static int TestSpeed(int[] array)
{
if (array == null) throw new ArgumentNullException();
if (array.Length == 0) throw new ArgumentException();
int count = 0;
foreach (int element in array)
{
if (element > 100)
{
count++;
}
}
return count;
}
}
}
Java:
import javax.swing.filechooser.*;
import java.io.*;
import java.nio.file.*;
public class Main
{
public static void main(String[] args) throws IOException
{
FileSystemView view = FileSystemView.getFileSystemView();
File file = view.getHomeDirectory();
String desktopPath = file.getPath();
Path fullPath = Paths.get(desktopPath,"RandomFile.dat");
File randomFile=new File(fullPath.toString());
if (!randomFile.exists() || randomFile.isDirectory())
{
System.out.println("The file does not exist.");
return;
}
byte[] array = Files.readAllBytes(randomFile.toPath());
int[] intArray=ByteArrayToUnsignedByteArray(array);
long start = System.currentTimeMillis();
int count=TestSpeed(intArray);
long end = System.currentTimeMillis();
long elapsed=end-start;
double elapsedSeconds=((double)elapsed)/1000;
System.out.printf("Count = %d\n",count);
System.out.printf("Elapsed: %f seconds\n",elapsedSeconds);
}
private static int ByteToUnsignedByte(byte b)
{
return b & 0b11111111;
}
private static int[] ByteArrayToUnsignedByteArray(byte[] byteArray)
{
if (byteArray==null) return null;
if (byteArray.length==0) return new int[0];
int[] newArray=new int[byteArray.length];
for (int i=0;i<byteArray.length;i++)
{
int element=ByteToUnsignedByte(byteArray[i]);
newArray[i]=element;
}
return newArray;
}
private static int TestSpeed(int[] byteArray)
{
if (byteArray==null) throw new IllegalArgumentException("The array must not be null.");
if (byteArray.length==0) throw new IllegalArgumentException("The array length must be non zero.");
int count=0;
for (int element : byteArray)
{
if (element>100)
{
count++;
}
}
return count;
}
}
Please note that we only measure the time of the function TestSpeed in both languages.
Results:
C#:
Count = 60542647
Elapsed: 0,4286155 seconds
Java:
Count = 60542647
Elapsed: 0,077000 seconds
I ran the code multiple times and the result is about the same. C# is about 5 times slower than Java. Please note that I ran the code from "Release" and also I used "Start Without Debbuging".
Does anybody know why this happens? What am I doing wrong?
EDIT: According to comments it's better to benchmark the C# code with a benchmark library so I used BenchmarkDotNet for this. The results are these: TestSpeed Mean: 411.2 ms Which is not really different from Stopwatch.
EDIT2: .NET version: .NET 9.0, Java openjdk version "24.0.1" 2025-04-15, OS: Microsoft Windows [Version 10.0.19045.5965], CPU name: AMD Athlon Gold 3150U with Radeon Graphics
I've disassembled your TestSpeed Java method (by the way, you ought to call it testSpeed to keep to Java naming conventions). This is on Linux (x64), but the results should be similar on Windows. Evidently, the JVM compiler has a number of compilation stages, each time with more optimization than the previous stage. I'm not an assembly language expert, but I think this shows that in C1 compilation, it generated a simple loop, similar to that generated by the C# runtime, but in the C2 generated code it has unrolled the loop, thus speeding it up.
So, it seems, the JVM compiler optimizes better than the .NET one in this particular case.
The TestSpeed method is shown below with line numbers for cross-reference with the assembly listing:
28 private static int TestSpeed(int[] byteArray)
29 {
30 int count=0;
31 for (int element : byteArray)
32 if (element>100)
33 count++;
34 return count;
35 }
And the assembly listing generated with
java -XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly
with hsdis-amd64.so in the LD_LIBRARY_PATH:
============================= C1-compiled nmethod ==============================
----------------------------------- Assembly -----------------------------------
Compiled method (c1) 498 20 % 3 org.example.App::TestSpeed @ 10 (40 bytes)
total in heap [0x00007d32b5403510,0x00007d32b5403ae0] = 1488
relocation [0x00007d32b5403670,0x00007d32b54036b0] = 64
main code [0x00007d32b54036c0,0x00007d32b54038e0] = 544
stub code [0x00007d32b54038e0,0x00007d32b5403910] = 48
oops [0x00007d32b5403910,0x00007d32b5403918] = 8
metadata [0x00007d32b5403918,0x00007d32b5403920] = 8
scopes data [0x00007d32b5403920,0x00007d32b5403998] = 120
scopes pcs [0x00007d32b5403998,0x00007d32b5403ab8] = 288
dependencies [0x00007d32b5403ab8,0x00007d32b5403ac0] = 8
nul chk table [0x00007d32b5403ac0,0x00007d32b5403ae0] = 32
[Disassembly]
--------------------------------------------------------------------------------
[Constant Pool (empty)]
--------------------------------------------------------------------------------
[Verified Entry Point]
# {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App'
0x00007d32b54036c0: mov %eax,-0x14000(%rsp)
0x00007d32b54036c7: push %rbp
0x00007d32b54036c8: sub $0x40,%rsp
0x00007d32b54036cc: movabs $0x7d323f400ac8,%rdi ; {metadata(method data for {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b54036d6: mov 0xf4(%rdi),%ebx
0x00007d32b54036dc: add $0x2,%ebx
0x00007d32b54036df: mov %ebx,0xf4(%rdi)
0x00007d32b54036e5: and $0x7fe,%ebx
0x00007d32b54036eb: cmp $0x0,%ebx
0x00007d32b54036ee: je 0x00007d32b5403827 ;*iconst_0 {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@0 (line 30)
0x00007d32b54036f4: mov 0xc(%rsi),%edi ; implicit exception: dispatches to 0x00007d32b5403848
;*arraylength {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@5 (line 31)
0x00007d32b54036f7: mov $0x0,%ebx
0x00007d32b54036fc: mov $0x0,%eax
0x00007d32b5403701: jmp 0x00007d32b5403791 ;*iload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@10 (line 31)
0x00007d32b5403706: xchg %ax,%ax
0x00007d32b5403708: cmp 0xc(%rsi),%ebx ; implicit exception: dispatches to 0x00007d32b540384d
0x00007d32b540370b: jae 0x00007d32b5403857
0x00007d32b5403711: movslq %ebx,%rdx
0x00007d32b5403714: mov 0x10(%rsi,%rdx,4),%edx ;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
0x00007d32b5403718: cmp $0x64,%edx
0x00007d32b540371b: movabs $0x7d323f400ac8,%rdx ; {metadata(method data for {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b5403725: mov $0x158,%rcx
0x00007d32b540372c: jle 0x00007d32b5403739
0x00007d32b5403732: mov $0x168,%rcx
0x00007d32b5403739: mov (%rdx,%rcx,1),%r8
0x00007d32b540373d: lea 0x1(%r8),%r8
0x00007d32b5403741: mov %r8,(%rdx,%rcx,1)
0x00007d32b5403745: jle 0x00007d32b540374d ;*if_icmple {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@26 (line 32)
0x00007d32b540374b: inc %eax
0x00007d32b540374d: inc %ebx
0x00007d32b540374f: movabs $0x7d323f400ac8,%rdx ; {metadata(method data for {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b5403759: mov 0xf8(%rdx),%ecx
0x00007d32b540375f: add $0x2,%ecx
0x00007d32b5403762: mov %ecx,0xf8(%rdx)
0x00007d32b5403768: and $0x3ffe,%ecx
0x00007d32b540376e: cmp $0x0,%ecx
0x00007d32b5403771: je 0x00007d32b5403865 ;*goto {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@35 (line 31)
0x00007d32b5403777: mov 0x348(%r15),%r10 ; ImmutableOopMap {rsi=Oop }
;*goto {reexecute=1 rethrow=0 return_oop=0}
; - (reexecute) org.example.App::TestSpeed@35 (line 31)
0x00007d32b540377e: test %eax,(%r10) ; {poll}
0x00007d32b5403781: movabs $0x7d323f400ac8,%rdx ; {metadata(method data for {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b540378b: incl 0x178(%rdx) ;*goto {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@35 (line 31)
0x00007d32b5403791: cmp %edi,%ebx
0x00007d32b5403793: movabs $0x7d323f400ac8,%rdx ; {metadata(method data for {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b540379d: mov $0x148,%rcx
0x00007d32b54037a4: jl 0x00007d32b54037b1
0x00007d32b54037aa: mov $0x138,%rcx
0x00007d32b54037b1: mov (%rdx,%rcx,1),%r8
0x00007d32b54037b5: lea 0x1(%r8),%r8
0x00007d32b54037b9: mov %r8,(%rdx,%rcx,1)
0x00007d32b54037bd: jl 0x00007d32b5403708 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@13 (line 31)
0x00007d32b54037c3: add $0x40,%rsp
0x00007d32b54037c7: pop %rbp
0x00007d32b54037c8: cmp 0x340(%r15),%rsp ; {poll_return}
0x00007d32b54037cf: ja 0x00007d32b5403886
0x00007d32b54037d5: ret ;*ireturn {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@39 (line 34)
0x00007d32b54037d6: mov %eax,-0x14000(%rsp)
0x00007d32b54037dd: push %rbp
0x00007d32b54037de: sub $0x40,%rsp
0x00007d32b54037e2: mov 0x20(%rsi),%ebx
0x00007d32b54037e5: mov 0x18(%rsi),%rax
0x00007d32b54037e9: mov 0x10(%rsi),%edx
0x00007d32b54037ec: mov 0x8(%rsi),%ecx
0x00007d32b54037ef: mov %rsi,%rdi
0x00007d32b54037f2: mov %ebx,0x30(%rsp)
0x00007d32b54037f6: mov %rax,0x28(%rsp)
0x00007d32b54037fb: mov %edx,0x24(%rsp)
0x00007d32b54037ff: mov %ecx,0x20(%rsp)
0x00007d32b5403803: call 0x00007d32d4700830 ; {runtime_call SharedRuntime::OSR_migration_end(long*)}
0x00007d32b5403808: mov 0x20(%rsp),%ecx
0x00007d32b540380c: mov %rcx,%rbx
0x00007d32b540380f: mov 0x24(%rsp),%edx
0x00007d32b5403813: mov %rdx,%rdi
0x00007d32b5403816: mov 0x28(%rsp),%rax
0x00007d32b540381b: mov %rax,%rsi
0x00007d32b540381e: mov 0x30(%rsp),%eax
0x00007d32b5403822: jmp 0x00007d32b5403791
0x00007d32b5403827: movabs $0x7d323f4006c0,%r10 ; {metadata({method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b5403831: mov %r10,0x8(%rsp)
0x00007d32b5403836: movq $0xffffffffffffffff,(%rsp)
0x00007d32b540383e: call 0x00007d32bca2f280 ; ImmutableOopMap {rsi=Oop }
;*synchronization entry
; - org.example.App::TestSpeed@-1 (line 30)
; {runtime_call counter_overflow Runtime1 stub}
0x00007d32b5403843: jmp 0x00007d32b54036f4
0x00007d32b5403848: call 0x00007d32bca295a0 ; ImmutableOopMap {rsi=Oop }
;*arraylength {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@5 (line 31)
; {runtime_call throw_null_pointer_exception Runtime1 stub}
0x00007d32b540384d: call 0x00007d32bca295a0 ; ImmutableOopMap {rsi=Oop }
;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
; {runtime_call throw_null_pointer_exception Runtime1 stub}
0x00007d32b5403852: call 0x00007d32bca295a0 ; ImmutableOopMap {rsi=Oop }
;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
; {runtime_call throw_null_pointer_exception Runtime1 stub}
0x00007d32b5403857: mov %rbx,(%rsp)
0x00007d32b540385b: mov %rsi,0x8(%rsp)
0x00007d32b5403860: call 0x00007d32bca28ca0 ; ImmutableOopMap {rsi=Oop }
;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
; {runtime_call throw_range_check_failed Runtime1 stub}
0x00007d32b5403865: movabs $0x7d323f4006c0,%r10 ; {metadata({method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App')}
0x00007d32b540386f: mov %r10,0x8(%rsp)
0x00007d32b5403874: movq $0x23,(%rsp)
0x00007d32b540387c: call 0x00007d32bca2f280 ; ImmutableOopMap {rsi=Oop }
;*goto {reexecute=1 rethrow=0 return_oop=0}
; - (reexecute) org.example.App::TestSpeed@35 (line 31)
; {runtime_call counter_overflow Runtime1 stub}
0x00007d32b5403881: jmp 0x00007d32b5403777
0x00007d32b5403886: movabs $0x7d32b54037c8,%r10 ; {internal_word}
0x00007d32b5403890: mov %r10,0x358(%r15)
0x00007d32b5403897: jmp 0x00007d32bc98e700 ; {runtime_call SafepointBlob}
0x00007d32b540389c: nop
0x00007d32b540389d: nop
0x00007d32b540389e: mov 0x3d0(%r15),%rax
0x00007d32b54038a5: movq $0x0,0x3d0(%r15)
0x00007d32b54038b0: movq $0x0,0x3d8(%r15)
0x00007d32b54038bb: add $0x40,%rsp
0x00007d32b54038bf: pop %rbp
0x00007d32b54038c0: jmp 0x00007d32bc99b600 ; {runtime_call unwind_exception Runtime1 stub}
0x00007d32b54038c5: hlt
0x00007d32b54038c6: hlt
0x00007d32b54038c7: hlt
0x00007d32b54038c8: hlt
0x00007d32b54038c9: hlt
0x00007d32b54038ca: hlt
0x00007d32b54038cb: hlt
0x00007d32b54038cc: hlt
0x00007d32b54038cd: hlt
0x00007d32b54038ce: hlt
0x00007d32b54038cf: hlt
0x00007d32b54038d0: hlt
0x00007d32b54038d1: hlt
0x00007d32b54038d2: hlt
0x00007d32b54038d3: hlt
0x00007d32b54038d4: hlt
0x00007d32b54038d5: hlt
0x00007d32b54038d6: hlt
0x00007d32b54038d7: hlt
0x00007d32b54038d8: hlt
0x00007d32b54038d9: hlt
0x00007d32b54038da: hlt
0x00007d32b54038db: hlt
0x00007d32b54038dc: hlt
0x00007d32b54038dd: hlt
0x00007d32b54038de: hlt
0x00007d32b54038df: hlt
[Exception Handler]
0x00007d32b54038e0: call 0x00007d32bca2b980 ; {no_reloc}
0x00007d32b54038e5: movabs $0x7d32d49cbfc8,%rdi ; {external_word}
0x00007d32b54038ef: and $0xfffffffffffffff0,%rsp
0x00007d32b54038f3: call 0x00007d32d451c6f0 ; {runtime_call MacroAssembler::debug64(char*, long, long*)}
0x00007d32b54038f8: hlt
[Deopt Handler Code]
0x00007d32b54038f9: movabs $0x7d32b54038f9,%r10 ; {section_word}
0x00007d32b5403903: push %r10
0x00007d32b5403905: jmp 0x00007d32bc98d9a0 ; {runtime_call DeoptimizationBlob}
0x00007d32b540390a: hlt
0x00007d32b540390b: hlt
0x00007d32b540390c: hlt
0x00007d32b540390d: hlt
0x00007d32b540390e: hlt
0x00007d32b540390f: hlt
--------------------------------------------------------------------------------
[/Disassembly]
============================= C2-compiled nmethod ==============================
----------------------------------- Assembly -----------------------------------
Compiled method (c2) 503 21 % 4 org.example.App::TestSpeed @ 10 (40 bytes)
total in heap [0x00007d32bcecc090,0x00007d32bcecc6c0] = 1584
relocation [0x00007d32bcecc1f0,0x00007d32bcecc208] = 24
main code [0x00007d32bcecc220,0x00007d32bcecc4a0] = 640
stub code [0x00007d32bcecc4a0,0x00007d32bcecc4b8] = 24
oops [0x00007d32bcecc4b8,0x00007d32bcecc4c0] = 8
metadata [0x00007d32bcecc4c0,0x00007d32bcecc4d0] = 16
scopes data [0x00007d32bcecc4d0,0x00007d32bcecc568] = 152
scopes pcs [0x00007d32bcecc568,0x00007d32bcecc6a8] = 320
dependencies [0x00007d32bcecc6a8,0x00007d32bcecc6b0] = 8
nul chk table [0x00007d32bcecc6b0,0x00007d32bcecc6c0] = 16
[Disassembly]
--------------------------------------------------------------------------------
[Constant Pool (empty)]
--------------------------------------------------------------------------------
[Verified Entry Point]
# {method} {0x00007d323f4006c0} 'TestSpeed' '([I)I' in 'org/example/App'
0x00007d32bcecc220: call 0x00007d32d463d440 ; {runtime_call os::breakpoint()}
0x00007d32bcecc225: data16 data16 nopw 0x0(%rax,%rax,1)
0x00007d32bcecc230: mov %eax,-0x14000(%rsp)
0x00007d32bcecc237: push %rbp
0x00007d32bcecc238: sub $0x30,%rsp
0x00007d32bcecc23c: mov 0x18(%rsi),%r14
0x00007d32bcecc240: mov 0x20(%rsi),%ebp
0x00007d32bcecc243: mov 0x10(%rsi),%r13d
0x00007d32bcecc247: mov 0x8(%rsi),%ebx
0x00007d32bcecc24a: mov %rsi,%rdi
0x00007d32bcecc24d: movabs $0x7d32d4700830,%r10
0x00007d32bcecc257: call *%r10
0x00007d32bcecc25a: nopw 0x0(%rax,%rax,1)
0x00007d32bcecc260: mov 0x8(%r14),%r11d ; implicit exception: dispatches to 0x00007d32bcecc47c
0x00007d32bcecc264: cmp $0x6c38,%r11d ; {metadata({type array int})}
0x00007d32bcecc26b: jne 0x00007d32bcecc464 ;*iload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@10 (line 31)
0x00007d32bcecc271: cmp %r13d,%ebx
0x00007d32bcecc274: jge 0x00007d32bcecc42a ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@13 (line 31)
0x00007d32bcecc27a: mov 0xc(%r14),%r10d
0x00007d32bcecc27e: mov %ebx,%r11d
0x00007d32bcecc281: inc %r11d
0x00007d32bcecc284: movslq %r11d,%r8
0x00007d32bcecc287: xor %r9d,%r9d
0x00007d32bcecc28a: test %r11d,%r11d
0x00007d32bcecc28d: cmovl %r9,%r8
0x00007d32bcecc291: mov %r8d,%r11d
0x00007d32bcecc294: cmp %r13d,%r11d
0x00007d32bcecc297: cmovg %r13d,%r11d ;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
0x00007d32bcecc29b: nopl 0x0(%rax,%rax,1)
0x00007d32bcecc2a0: cmp %r10d,%ebx
0x00007d32bcecc2a3: jae 0x00007d32bcecc444
0x00007d32bcecc2a9: mov 0x10(%r14,%rbx,4),%r9d
0x00007d32bcecc2ae: mov %ebp,%edx
0x00007d32bcecc2b0: inc %edx
0x00007d32bcecc2b2: cmp $0x64,%r9d
0x00007d32bcecc2b6: cmovle %ebp,%edx
0x00007d32bcecc2b9: inc %ebx ;*iinc {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@32 (line 31)
0x00007d32bcecc2bb: nopl 0x0(%rax,%rax,1)
0x00007d32bcecc2c0: cmp %r11d,%ebx
0x00007d32bcecc2c3: jge 0x00007d32bcecc2c9 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@13 (line 31)
0x00007d32bcecc2c5: mov %edx,%ebp
0x00007d32bcecc2c7: jmp 0x00007d32bcecc29b
0x00007d32bcecc2c9: movslq %r10d,%r11
0x00007d32bcecc2cc: movslq %r13d,%r8
0x00007d32bcecc2cf: cmp %r11,%r8
0x00007d32bcecc2d2: cmovl %r8,%r11
0x00007d32bcecc2d6: add $0xfffffffffffffff9,%r11
0x00007d32bcecc2da: mov $0xffffffff80000000,%r8
0x00007d32bcecc2e1: cmp $0xffffffff80000000,%r11
0x00007d32bcecc2e8: cmovl %r8,%r11
0x00007d32bcecc2ec: mov %r11d,%r11d
0x00007d32bcecc2ef: cmp %r11d,%ebx
0x00007d32bcecc2f2: jge 0x00007d32bcecc3fa ;*goto {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@35 (line 31)
0x00007d32bcecc2f8: jmp 0x00007d32bcecc31b
0x00007d32bcecc2fa: mov 0x348(%r15),%r10 ; ImmutableOopMap {r14=Oop }
;*goto {reexecute=1 rethrow=0 return_oop=0}
; - (reexecute) org.example.App::TestSpeed@35 (line 31)
0x00007d32bcecc301: test %eax,(%r10) ;*goto {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@35 (line 31)
; {poll}
0x00007d32bcecc304: cmp (%rsp),%ebx
0x00007d32bcecc307: jge 0x00007d32bcecc3f0
0x00007d32bcecc30d: vmovd %xmm0,%r13d
0x00007d32bcecc312: vmovd %xmm1,%r10d
0x00007d32bcecc317: mov (%rsp),%r11d
0x00007d32bcecc31b: mov %r11d,%ebp
0x00007d32bcecc31e: sub %ebx,%ebp
0x00007d32bcecc320: xor %r9d,%r9d
0x00007d32bcecc323: cmp %ebx,%r11d
0x00007d32bcecc326: cmovl %r9d,%ebp
0x00007d32bcecc32a: cmp $0x1f40,%ebp
0x00007d32bcecc330: mov $0x1f40,%r9d
0x00007d32bcecc336: cmova %r9d,%ebp
0x00007d32bcecc33a: add %ebx,%ebp
0x00007d32bcecc33c: vmovd %r13d,%xmm0
0x00007d32bcecc341: vmovd %r10d,%xmm1
0x00007d32bcecc346: mov %r11d,(%rsp)
0x00007d32bcecc34a: nopw 0x0(%rax,%rax,1) ;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
0x00007d32bcecc350: mov 0x10(%r14,%rbx,4),%r10d
0x00007d32bcecc355: movslq %ebx,%rsi
0x00007d32bcecc358: mov 0x2c(%r14,%rsi,4),%r13d
0x00007d32bcecc35d: mov 0x14(%r14,%rsi,4),%r11d
0x00007d32bcecc362: mov 0x28(%r14,%rsi,4),%r9d
0x00007d32bcecc367: mov 0x24(%r14,%rsi,4),%r8d
0x00007d32bcecc36c: mov 0x20(%r14,%rsi,4),%edi
0x00007d32bcecc371: mov 0x1c(%r14,%rsi,4),%ecx
0x00007d32bcecc376: mov 0x18(%r14,%rsi,4),%eax
0x00007d32bcecc37b: mov %edx,%esi
0x00007d32bcecc37d: inc %esi
0x00007d32bcecc37f: cmp $0x64,%r10d
0x00007d32bcecc383: cmovle %edx,%esi
0x00007d32bcecc386: mov %esi,%edx
0x00007d32bcecc388: inc %edx
0x00007d32bcecc38a: cmp $0x64,%r11d
0x00007d32bcecc38e: cmovle %esi,%edx
0x00007d32bcecc391: mov %edx,%r11d
0x00007d32bcecc394: inc %r11d
0x00007d32bcecc397: cmp $0x64,%eax
0x00007d32bcecc39a: cmovle %edx,%r11d
0x00007d32bcecc39e: mov %r11d,%edx
0x00007d32bcecc3a1: inc %edx
0x00007d32bcecc3a3: cmp $0x64,%ecx
0x00007d32bcecc3a6: cmovle %r11d,%edx
0x00007d32bcecc3aa: mov %edx,%r11d
0x00007d32bcecc3ad: inc %r11d
0x00007d32bcecc3b0: cmp $0x64,%edi
0x00007d32bcecc3b3: cmovle %edx,%r11d
0x00007d32bcecc3b7: mov %r11d,%r10d
0x00007d32bcecc3ba: inc %r10d
0x00007d32bcecc3bd: cmp $0x64,%r8d
0x00007d32bcecc3c1: cmovle %r11d,%r10d
0x00007d32bcecc3c5: mov %r10d,%r8d
0x00007d32bcecc3c8: inc %r8d
0x00007d32bcecc3cb: cmp $0x64,%r9d
0x00007d32bcecc3cf: cmovle %r10d,%r8d
0x00007d32bcecc3d3: mov %r8d,%edx
0x00007d32bcecc3d6: inc %edx
0x00007d32bcecc3d8: cmp $0x64,%r13d
0x00007d32bcecc3dc: cmovle %r8d,%edx
0x00007d32bcecc3e0: add $0x8,%ebx ;*iinc {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@32 (line 31)
0x00007d32bcecc3e3: cmp %ebp,%ebx
0x00007d32bcecc3e5: jl 0x00007d32bcecc350 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@13 (line 31)
0x00007d32bcecc3eb: jmp 0x00007d32bcecc2fa
0x00007d32bcecc3f0: vmovd %xmm0,%r13d
0x00007d32bcecc3f5: vmovd %xmm1,%r10d
0x00007d32bcecc3fa: nopw 0x0(%rax,%rax,1)
0x00007d32bcecc400: cmp %r13d,%ebx
0x00007d32bcecc403: jge 0x00007d32bcecc460
0x00007d32bcecc409: jmp 0x00007d32bcecc40e
0x00007d32bcecc40b: nop
0x00007d32bcecc40c: mov %ebp,%edx ;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
0x00007d32bcecc40e: cmp %r10d,%ebx
0x00007d32bcecc411: jae 0x00007d32bcecc446
0x00007d32bcecc413: mov 0x10(%r14,%rbx,4),%r11d
0x00007d32bcecc418: mov %edx,%ebp
0x00007d32bcecc41a: inc %ebp
0x00007d32bcecc41c: cmp $0x64,%r11d
0x00007d32bcecc420: cmovle %edx,%ebp
0x00007d32bcecc423: inc %ebx ;*iinc {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@32 (line 31)
0x00007d32bcecc425: cmp %r13d,%ebx
0x00007d32bcecc428: jl 0x00007d32bcecc40c ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@13 (line 31)
0x00007d32bcecc42a: mov $0xffffff45,%esi
0x00007d32bcecc42f: mov %r14,(%rsp)
0x00007d32bcecc433: mov %ebx,0x10(%rsp)
0x00007d32bcecc437: mov %r13d,0x14(%rsp)
0x00007d32bcecc43c: data16 xchg %ax,%ax
0x00007d32bcecc43f: call 0x00007d32bc98d600 ; ImmutableOopMap {[0]=Oop }
;*if_icmpge {reexecute=1 rethrow=0 return_oop=0}
; - (reexecute) org.example.App::TestSpeed@13 (line 31)
; {runtime_call UncommonTrapBlob}
0x00007d32bcecc444: mov %ebp,%edx
0x00007d32bcecc446: mov $0xffffffe4,%esi
0x00007d32bcecc44b: mov %edx,%ebp
0x00007d32bcecc44d: mov %r13d,0x8(%rsp)
0x00007d32bcecc452: mov %r14,0x10(%rsp)
0x00007d32bcecc457: mov %ebx,0x18(%rsp)
0x00007d32bcecc45b: call 0x00007d32bc98d600 ; ImmutableOopMap {[16]=Oop }
;*iaload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@19 (line 31)
; {runtime_call UncommonTrapBlob}
0x00007d32bcecc460: mov %edx,%ebp
0x00007d32bcecc462: jmp 0x00007d32bcecc42a
0x00007d32bcecc464: mov $0xffffff8d,%esi
0x00007d32bcecc469: mov %r14,(%rsp)
0x00007d32bcecc46d: mov %r13d,0x8(%rsp)
0x00007d32bcecc472: mov %ebx,0xc(%rsp)
0x00007d32bcecc476: nop
0x00007d32bcecc477: call 0x00007d32bc98d600 ; ImmutableOopMap {[0]=Oop }
;*iload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@10 (line 31)
; {runtime_call UncommonTrapBlob}
0x00007d32bcecc47c: mov $0xffffff76,%esi
0x00007d32bcecc481: mov %r13d,(%rsp)
0x00007d32bcecc485: mov %ebx,0x4(%rsp)
0x00007d32bcecc489: xchg %ax,%ax
0x00007d32bcecc48b: call 0x00007d32bc98d600 ; ImmutableOopMap {}
;*iload {reexecute=0 rethrow=0 return_oop=0}
; - org.example.App::TestSpeed@10 (line 31)
; {runtime_call UncommonTrapBlob}
0x00007d32bcecc490: hlt
0x00007d32bcecc491: hlt
0x00007d32bcecc492: hlt
0x00007d32bcecc493: hlt
0x00007d32bcecc494: hlt
0x00007d32bcecc495: hlt
0x00007d32bcecc496: hlt
0x00007d32bcecc497: hlt
0x00007d32bcecc498: hlt
0x00007d32bcecc499: hlt
0x00007d32bcecc49a: hlt
0x00007d32bcecc49b: hlt
0x00007d32bcecc49c: hlt
0x00007d32bcecc49d: hlt
0x00007d32bcecc49e: hlt
0x00007d32bcecc49f: hlt
[Exception Handler]
0x00007d32bcecc4a0: jmp 0x00007d32bc99bc00 ; {no_reloc}
[Deopt Handler Code]
0x00007d32bcecc4a5: call 0x00007d32bcecc4aa
0x00007d32bcecc4aa: subq $0x5,(%rsp)
0x00007d32bcecc4af: jmp 0x00007d32bc98d9a0 ; {runtime_call DeoptimizationBlob}
0x00007d32bcecc4b4: hlt
0x00007d32bcecc4b5: hlt
0x00007d32bcecc4b6: hlt
0x00007d32bcecc4b7: hlt
--------------------------------------------------------------------------------
[/Disassembly]