On Mon, 7 Mar 2022 21:41:05 GMT, Richard Startin <d...@openjdk.java.net> wrote:
>> Ludovic Henry has updated the pull request incrementally with one additional >> commit since the last revision: >> >> Add UTF-16 benchmarks > > Great to see this taken up. As it’s implemented here, it’s still scalar, but > the unroll prevents a strength reduction of the multiplication in the loop > from > > result = 31 * result + element; > > to: > > result = (result << 5) - result + element > > which creates a data dependency and slows the loop down. > > This was first reported by Peter Levart here: > http://mail.openjdk.java.net/pipermail/core-libs-dev/2014-September/028898.html > @richardstartin - does that strength reduction actually happen? The bit-shift > transformation valid only if the original `result` is known to be > non-negative. Yes. @State(Scope.Benchmark) public class StringHashCode { @Param({"sdjhfklashdfklashdflkashdflkasdhf", "締国件街徹条覧野武鮮覧横営績難比兵州催色"}) String string; @CompilerControl(CompilerControl.Mode.DONT_INLINE) @Benchmark public int stringHashCode() { return new String(string).hashCode(); } } ....[Hottest Region 1].............................................................................. c2, level 4, StringHashCode::stringHashCode, version 507 (384 bytes) 0x00007f2df0142da4: shl $0x3,%r10 0x00007f2df0142da8: movabs $0x800000000,%r12 0x00007f2df0142db2: add %r12,%r10 0x00007f2df0142db5: xor %r12,%r12 0x00007f2df0142db8: cmp %r10,%rax 0x00007f2df0142dbb: jne 0x00007f2de8696080 ; {runtime_call ic_miss_stub} 0x00007f2df0142dc1: data16 xchg %ax,%ax 0x00007f2df0142dc4: nopl 0x0(%rax,%rax,1) 0x00007f2df0142dcc: data16 data16 xchg %ax,%ax [Verified Entry Point] 0.12% 0x00007f2df0142dd0: mov %eax,-0x14000(%rsp) 0.84% 0x00007f2df0142dd7: push %rbp 0.22% 0x00007f2df0142dd8: sub $0x30,%rsp ;*synchronization entry ; - StringHashCode::stringHashCode@-1 (line 14) 0x00007f2df0142ddc: mov 0xc(%rsi),%r8d ;*getfield string {reexecute=0 rethrow=0 return_oop=0} ; - StringHashCode::stringHashCode@5 (line 14) 0.73% 0x00007f2df0142de0: mov 0x10(%r12,%r8,8),%eax ; implicit exception: dispatches to 0x00007f2df0142fc4 0.10% 0x00007f2df0142de5: test %eax,%eax ╭ 0x00007f2df0142de7: je 0x00007f2df0142df9 ;*synchronization entry │ ; - StringHashCode::stringHashCode@-1 (line 14) 0.16% │ 0x00007f2df0142de9: add $0x30,%rsp │ 0x00007f2df0142ded: pop %rbp │ 0x00007f2df0142dee: mov 0x108(%r15),%r10 0.88% │ 0x00007f2df0142df5: test %eax,(%r10) ; {poll_return} 0.18% │ 0x00007f2df0142df8: retq ↘ 0x00007f2df0142df9: mov 0xc(%r12,%r8,8),%ecx ;*getfield value {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::<init>@6 (line 236) ; - StringHashCode::stringHashCode@8 (line 14) 0x00007f2df0142dfe: mov 0xc(%r12,%rcx,8),%r10d ;*arraylength {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::hashCode@13 (line 1503) ; - StringHashCode::stringHashCode@11 (line 14) ; implicit exception: dispatches to 0x00007f2df0142fd0 0.83% 0x00007f2df0142e03: test %r10d,%r10d 0x00007f2df0142e06: jbe 0x00007f2df0142f86 ;*ifle {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::hashCode@14 (line 1503) ; - StringHashCode::stringHashCode@11 (line 14) 0.14% 0x00007f2df0142e0c: movsbl 0x14(%r12,%r8,8),%r8d ;*getfield coder {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::<init>@14 (line 237) ; - StringHashCode::stringHashCode@8 (line 14) 0.02% 0x00007f2df0142e12: test %r8d,%r8d 0x00007f2df0142e15: jne 0x00007f2df0142fac ;*ifne {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::isLatin1@10 (line 3266) ; - java.lang.String::hashCode@19 (line 1504) ; - StringHashCode::stringHashCode@11 (line 14) 0x00007f2df0142e1b: mov %r10d,%edi 1.14% 0x00007f2df0142e1e: dec %edi 0.10% 0x00007f2df0142e20: cmp %r10d,%edi 0x00007f2df0142e23: jae 0x00007f2df0142f8d 0x00007f2df0142e29: movzbl 0x10(%r12,%rcx,8),%r9d ;*iand {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.StringLatin1::hashCode@31 (line 196) ; - java.lang.String::hashCode@29 (line 1504) ; - StringHashCode::stringHashCode@11 (line 14) 0x00007f2df0142e2f: lea (%r12,%rcx,8),%rbx ;*getfield value {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.String::<init>@6 (line 236) ; - StringHashCode::stringHashCode@8 (line 14) 0.77% 0x00007f2df0142e33: mov %r10d,%edx 0.22% 0x00007f2df0142e36: add $0xfffffff9,%edx 0x00007f2df0142e39: mov $0x80000000,%r11d 0x00007f2df0142e3f: cmp %edx,%edi 0.84% 0x00007f2df0142e41: cmovl %r11d,%edx 0.10% 0x00007f2df0142e45: mov $0x1,%ebp 0x00007f2df0142e4a: cmp $0x1,%edx ╭ 0x00007f2df0142e4d: jle 0x00007f2df0142f55 │ 0x00007f2df0142e53: mov %r9d,%r11d 1.08% │ 0x00007f2df0142e56: shl $0x5,%r11d 0.08% │ 0x00007f2df0142e5a: sub %r9d,%r11d ;*putfield value {reexecute=0 rethrow=0 return_oop=0} │ ; - java.lang.String::<init>@9 (line 236) │ ; - StringHashCode::stringHashCode@8 (line 14) 0.02% │╭ 0x00007f2df0142e5d: jmp 0x00007f2df0142e6d ││ ↗ 0x00007f2df0142e5f: vmovd %xmm0,%ecx ││ │ 0x00007f2df0142e63: vmovd %xmm2,%r10d ││ │ 0x00007f2df0142e68: vmovd %xmm1,%r8d │↘ │ 0x00007f2df0142e6d: mov %edx,%esi 0.92% │ │ 0x00007f2df0142e6f: sub %ebp,%esi 0.16% │ │ 0x00007f2df0142e71: mov $0x1f40,%r9d 0.02% │ │ 0x00007f2df0142e77: cmp %r9d,%esi │ │ 0x00007f2df0142e7a: mov $0x1f40,%edi 0.94% │ │ 0x00007f2df0142e7f: cmovg %edi,%esi 0.12% │ │ 0x00007f2df0142e82: add %ebp,%esi │ │ 0x00007f2df0142e84: vmovd %ecx,%xmm0 │ │ 0x00007f2df0142e88: vmovd %r10d,%xmm2 0.83% │ │ 0x00007f2df0142e8d: vmovd %r8d,%xmm1 0.10% │ │ 0x00007f2df0142e92: data16 nopw 0x0(%rax,%rax,1) │ │ 0x00007f2df0142e9c: data16 data16 xchg %ax,%ax ;*imul {reexecute=0 rethrow=0 return_oop=0} │ │ ; - java.lang.StringLatin1::hashCode@25 (line 196) │ │ ; - java.lang.String::hashCode@29 (line 1504) │ │ ; - StringHashCode::stringHashCode@11 (line 14) 0.16% │ ↗│ 0x00007f2df0142ea0: movslq %ebp,%r13 ;*baload {reexecute=0 rethrow=0 return_oop=0} │ ││ ; - java.lang.StringLatin1::hashCode@19 (line 195) │ ││ ; - java.lang.String::hashCode@29 (line 1504) │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 1.08% │ ││ 0x00007f2df0142ea3: movzbl 0x10(%rbx,%r13,1),%r9d 2.08% │ ││ 0x00007f2df0142ea9: movzbl 0x17(%rbx,%r13,1),%r10d 1.39% │ ││ 0x00007f2df0142eaf: movzbl 0x11(%rbx,%r13,1),%ecx 0.20% │ ││ 0x00007f2df0142eb5: add %r9d,%r11d 1.04% │ ││ 0x00007f2df0142eb8: movzbl 0x15(%rbx,%r13,1),%r8d 1.59% │ ││ 0x00007f2df0142ebe: mov %r11d,%edi 1.26% │ ││ 0x00007f2df0142ec1: shl $0x5,%edi 0.12% │ ││ 0x00007f2df0142ec4: sub %r11d,%edi 1.81% │ ││ 0x00007f2df0142ec7: add %ecx,%edi 2.77% │ ││ 0x00007f2df0142ec9: movzbl 0x14(%rbx,%r13,1),%r11d 0.84% │ ││ 0x00007f2df0142ecf: mov %edi,%ecx 0.16% │ ││ 0x00007f2df0142ed1: shl $0x5,%ecx 1.77% │ ││ 0x00007f2df0142ed4: sub %edi,%ecx 2.28% │ ││ 0x00007f2df0142ed6: movzbl 0x13(%rbx,%r13,1),%r9d 0.67% │ ││ 0x00007f2df0142edc: movzbl 0x12(%rbx,%r13,1),%edi 0.02% │ ││ 0x00007f2df0142ee2: add %edi,%ecx 2.51% │ ││ 0x00007f2df0142ee4: movzbl 0x16(%rbx,%r13,1),%edi 1.00% │ ││ 0x00007f2df0142eea: mov %ecx,%r14d 0.79% │ ││ 0x00007f2df0142eed: shl $0x5,%r14d 1.61% │ ││ 0x00007f2df0142ef1: sub %ecx,%r14d 6.01% │ ││ 0x00007f2df0142ef4: add %r9d,%r14d 1.73% │ ││ 0x00007f2df0142ef7: mov %r14d,%r9d 0.29% │ ││ 0x00007f2df0142efa: shl $0x5,%r9d 0.24% │ ││ 0x00007f2df0142efe: sub %r14d,%r9d 6.09% │ ││ 0x00007f2df0142f01: add %r11d,%r9d 2.28% │ ││ 0x00007f2df0142f04: mov %r9d,%r11d 0.29% │ ││ 0x00007f2df0142f07: shl $0x5,%r11d 0.28% │ ││ 0x00007f2df0142f0b: sub %r9d,%r11d 5.30% │ ││ 0x00007f2df0142f0e: add %r8d,%r11d 2.50% │ ││ 0x00007f2df0142f11: mov %r11d,%ecx 0.24% │ ││ 0x00007f2df0142f14: shl $0x5,%ecx 0.37% │ ││ 0x00007f2df0142f17: sub %r11d,%ecx 6.50% │ ││ 0x00007f2df0142f1a: add %edi,%ecx 2.71% │ ││ 0x00007f2df0142f1c: mov %ecx,%r9d 0.26% │ ││ 0x00007f2df0142f1f: shl $0x5,%r9d 0.18% │ ││ 0x00007f2df0142f23: sub %ecx,%r9d 5.93% │ ││ 0x00007f2df0142f26: add %r10d,%r9d ;*iadd {reexecute=0 rethrow=0 return_oop=0} │ ││ ; - java.lang.StringLatin1::hashCode@32 (line 196) │ ││ ; - java.lang.String::hashCode@29 (line 1504) │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 2.85% │ ││ 0x00007f2df0142f29: mov %r9d,%r11d 0.10% │ ││ 0x00007f2df0142f2c: shl $0x5,%r11d 0.20% │ ││ 0x00007f2df0142f30: sub %r9d,%r11d ;*imul {reexecute=0 rethrow=0 return_oop=0} │ ││ ; - java.lang.StringLatin1::hashCode@25 (line 196) │ ││ ; - java.lang.String::hashCode@29 (line 1504) │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 2.57% │ ││ 0x00007f2df0142f33: add $0x8,%ebp ;*iinc {reexecute=0 rethrow=0 return_oop=0} │ ││ ; - java.lang.StringLatin1::hashCode@34 (line 195) │ ││ ; - java.lang.String::hashCode@29 (line 1504) │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 1.36% │ ││ 0x00007f2df0142f36: cmp %esi,%ebp │ ╰│ 0x00007f2df0142f38: jl 0x00007f2df0142ea0 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0} │ │ ; - java.lang.StringLatin1::hashCode@13 (line 195) │ │ ; - java.lang.String::hashCode@29 (line 1504) │ │ ; - StringHashCode::stringHashCode@11 (line 14) │ │ 0x00007f2df0142f3e: mov 0x108(%r15),%r10 ; ImmutableOopMap{rbx=Oop xmm0=NarrowOop } │ │ ;*goto {reexecute=1 rethrow=0 return_oop=0} │ │ ; - java.lang.StringLatin1::hashCode@37 (line 195) │ │ ; - java.lang.String::hashCode@29 (line 1504) │ │ ; - StringHashCode::stringHashCode@11 (line 14) │ │ 0x00007f2df0142f45: test %eax,(%r10) ;*goto {reexecute=0 rethrow=0 return_oop=0} │ │ ; - java.lang.StringLatin1::hashCode@37 (line 195) │ │ ; - java.lang.String::hashCode@29 (line 1504) │ │ ; - StringHashCode::stringHashCode@11 (line 14) │ │ ; {poll} 1.00% │ │ 0x00007f2df0142f48: cmp %edx,%ebp │ ╰ 0x00007f2df0142f4a: jl 0x00007f2df0142e5f 0.16% │ 0x00007f2df0142f50: vmovd %xmm2,%r10d ↘ 0x00007f2df0142f55: cmp %r10d,%ebp 0x00007f2df0142f58: jge 0x00007f2df0142f7e 0x00007f2df0142f5a: xchg %ax,%ax ;*aload_2 {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.StringLatin1::hashCode@16 (line 195) ; - java.lang.String::hashCode@29 (line 1504) ; - StringHashCode::stringHashCode@11 (line 14) 0x00007f2df0142f5c: movzbl 0x10(%rbx,%rbp,1),%r8d 0x00007f2df0142f62: mov %r9d,%eax 0x00007f2df0142f65: shl $0x5,%eax 0x00007f2df0142f68: sub %r9d,%eax c2, level 4, StringHashCode::stringHashCode, version 505 (435 bytes) 0x00007fd05f2c0ba4: shl $0x3,%r10 0x00007fd05f2c0ba8: movabs $0x800000000,%r12 0x00007fd05f2c0bb2: add %r12,%r10 0x00007fd05f2c0bb5: xor %r12,%r12 0x00007fd05f2c0bb8: cmp %r10,%rax 0x00007fd05f2c0bbb: jne 0x00007fd057814080 ; {runtime_call ic_miss_stub} 0x00007fd05f2c0bc1: data16 xchg %ax,%ax 0x00007fd05f2c0bc4: nopl 0x0(%rax,%rax,1) 0x00007fd05f2c0bcc: data16 data16 xchg %ax,%ax [Verified Entry Point] 1.14% 0x00007fd05f2c0bd0: mov %eax,-0x14000(%rsp) 0.50% 0x00007fd05f2c0bd7: push %rbp 0.22% 0x00007fd05f2c0bd8: sub $0x30,%rsp ;*synchronization entry ; - StringHashCode::stringHashCode@-1 (line 14) 1.58% 0x00007fd05f2c0bdc: mov 0xc(%rsi),%r11d ;*getfield string {reexecute=0 rethrow=0 return_oop=0} ; - StringHashCode::stringHashCode@5 (line 14) 0x00007fd05f2c0be0: mov 0x10(%r12,%r11,8),%ecx ;*synchronization entry ; - StringHashCode::stringHashCode@-1 (line 14) ; implicit exception: dispatches to 0x00007fd05f2c0efc 0.34% 0x00007fd05f2c0be5: test %ecx,%ecx ╭ 0x00007fd05f2c0be7: jne 0x00007fd05f2c0d84 ;*ifne {reexecute=0 rethrow=0 return_oop=0} │ ; - java.lang.String::hashCode@6 (line 1503) │ ; - StringHashCode::stringHashCode@11 (line 14) 1.04% │ 0x00007fd05f2c0bed: mov 0xc(%r12,%r11,8),%edx ;*getfield value {reexecute=0 rethrow=0 return_oop=0} │ ; - java.lang.String::<init>@6 (line 236) │ ; - StringHashCode::stringHashCode@8 (line 14) 0.50% │ 0x00007fd05f2c0bf2: mov 0xc(%r12,%rdx,8),%r14d ;*arraylength {reexecute=0 rethrow=0 return_oop=0} │ ; - java.lang.String::hashCode@13 (line 1503) │ ; - StringHashCode::stringHashCode@11 (line 14) │ ; implicit exception: dispatches to 0x00007fd05f2c0f08 │ 0x00007fd05f2c0bf7: xor %eax,%eax 0.36% │ 0x00007fd05f2c0bf9: test %r14d,%r14d │╭ 0x00007fd05f2c0bfc: jbe 0x00007fd05f2c0d74 ;*ifle {reexecute=0 rethrow=0 return_oop=0} ││ ; - java.lang.String::hashCode@14 (line 1503) ││ ; - StringHashCode::stringHashCode@11 (line 14) 1.08% ││ 0x00007fd05f2c0c02: movsbl 0x14(%r12,%r11,8),%ebp ;*getfield coder {reexecute=0 rethrow=0 return_oop=0} ││ ; - java.lang.String::<init>@14 (line 237) ││ ; - StringHashCode::stringHashCode@8 (line 14) 0.50% ││ 0x00007fd05f2c0c08: lea (%r12,%rdx,8),%rdi ;*getfield value {reexecute=0 rethrow=0 return_oop=0} ││ ; - java.lang.String::<init>@6 (line 236) ││ ; - StringHashCode::stringHashCode@8 (line 14) ││ 0x00007fd05f2c0c0c: mov $0x1,%r10d 0.18% ││ 0x00007fd05f2c0c12: mov $0x1f40,%esi 1.20% ││ 0x00007fd05f2c0c17: mov $0x80000000,%r11d ;*putfield value {reexecute=0 rethrow=0 return_oop=0} ││ ; - java.lang.String::<init>@9 (line 236) ││ ; - StringHashCode::stringHashCode@8 (line 14) 0.50% ││ 0x00007fd05f2c0c1d: test %ebp,%ebp ││╭ 0x00007fd05f2c0c1f: je 0x00007fd05f2c0d88 ;*ifeq {reexecute=0 rethrow=0 return_oop=0} │││ ; - java.lang.String::hashCode@22 (line 1504) │││ ; - StringHashCode::stringHashCode@11 (line 14) │││ 0x00007fd05f2c0c25: sar %r14d ;*ishr {reexecute=0 rethrow=0 return_oop=0} │││ ; - java.lang.StringUTF16::hashCode@5 (line 348) │││ ; - java.lang.String::hashCode@39 (line 1505) │││ ; - StringHashCode::stringHashCode@11 (line 14) 0.20% │││ 0x00007fd05f2c0c28: test %r14d,%r14d │││╭ 0x00007fd05f2c0c2b: jle 0x00007fd05f2c0d74 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0} ││││ ; - java.lang.StringUTF16::hashCode@11 (line 349) ││││ ; - java.lang.String::hashCode@39 (line 1505) ││││ ; - StringHashCode::stringHashCode@11 (line 14) 1.14% ││││ 0x00007fd05f2c0c31: movzwl 0x10(%r12,%rdx,8),%r9d ;*invokestatic getChar {reexecute=0 rethrow=0 return_oop=0} ││││ ; - java.lang.StringUTF16::hashCode@20 (line 350) ││││ ; - java.lang.String::hashCode@39 (line 1505) ││││ ; - StringHashCode::stringHashCode@11 (line 14) 0.40% ││││ 0x00007fd05f2c0c37: mov %r14d,%r13d ││││ 0x00007fd05f2c0c3a: dec %r13d 0.16% ││││ 0x00007fd05f2c0c3d: mov %r9d,%r8d 0.86% ││││ 0x00007fd05f2c0c40: shl $0x5,%r8d 0.46% ││││ 0x00007fd05f2c0c44: mov %r14d,%ebx ││││ 0x00007fd05f2c0c47: add $0xfffffff9,%ebx 0.16% ││││ 0x00007fd05f2c0c4a: cmp %ebx,%r13d 0.98% ││││ 0x00007fd05f2c0c4d: cmovl %r11d,%ebx 0.46% ││││ 0x00007fd05f2c0c51: cmp $0x1,%ebx ││││ 0x00007fd05f2c0c54: jle 0x00007fd05f2c0edb ││││ 0x00007fd05f2c0c5a: sub %r9d,%r8d ;*imul {reexecute=0 rethrow=0 return_oop=0} ││││ ; - java.lang.StringUTF16::hashCode@17 (line 350) ││││ ; - java.lang.String::hashCode@39 (line 1505) ││││ ; - StringHashCode::stringHashCode@11 (line 14) 0.28% ││││╭ 0x00007fd05f2c0c5d: jmp 0x00007fd05f2c0c8e ;*bipush {reexecute=0 rethrow=0 return_oop=0} │││││ ; - java.lang.StringUTF16::hashCode@14 (line 350) │││││ ; - java.lang.String::hashCode@39 (line 1505) │││││ ; - StringHashCode::stringHashCode@11 (line 14) 1.22% │││││ ↗ ↗ 0x00007fd05f2c0c5f: movzwl 0x10(%rdi,%r10,2),%r11d 1.54% │││││ │ │ 0x00007fd05f2c0c65: sub %r9d,%eax 1.58% │││││ │ │ 0x00007fd05f2c0c68: add %r11d,%eax ;*iadd {reexecute=0 rethrow=0 return_oop=0} │││││ │ │ ; - java.lang.StringUTF16::hashCode@23 (line 350) │││││ │ │ ; - java.lang.String::hashCode@39 (line 1505) │││││ │ │ ; - StringHashCode::stringHashCode@11 (line 14) 1.93% │││││ │ │ 0x00007fd05f2c0c6b: inc %r10d ;*iinc {reexecute=0 rethrow=0 return_oop=0} │││││ │ │ ; - java.lang.StringUTF16::hashCode@25 (line 349) │││││ │ │ ; - java.lang.String::hashCode@39 (line 1505) │││││ │ │ ; - StringHashCode::stringHashCode@11 (line 14) 0.78% │││││ │ │ 0x00007fd05f2c0c6e: cmp %r14d,%r10d │││││╭│ │ 0x00007fd05f2c0c71: jge 0x00007fd05f2c0d74 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0} │││││││ │ ; - java.lang.StringUTF16::hashCode@11 (line 349) │││││││ │ ; - java.lang.String::hashCode@39 (line 1505) │││││││ │ ; - StringHashCode::stringHashCode@11 (line 14) 0.80% │││││││ │ 0x00007fd05f2c0c77: mov %eax,%r8d 0.72% │││││││ │ 0x00007fd05f2c0c7a: shl $0x5,%r8d 1.56% │││││││ │ 0x00007fd05f2c0c7e: mov %eax,%r9d 0.68% │││││││ │ 0x00007fd05f2c0c81: mov %r8d,%eax 0.62% ││││││╰ │ 0x00007fd05f2c0c84: jmp 0x00007fd05f2c0c5f ││││││ ↗│ 0x00007fd05f2c0c86: vmovd %xmm1,%ecx ││││││ ││ 0x00007fd05f2c0c8a: vmovd %xmm2,%edx 1.12% ││││↘│ ││ 0x00007fd05f2c0c8e: mov %ebx,%r13d 0.46% ││││ │ ││ 0x00007fd05f2c0c91: sub %r10d,%r13d ││││ │ ││ 0x00007fd05f2c0c94: cmp %esi,%r13d 0.18% ││││ │ ││ 0x00007fd05f2c0c97: cmovg %esi,%r13d 1.14% ││││ │ ││ 0x00007fd05f2c0c9b: add %r10d,%r13d 0.46% ││││ │ ││ 0x00007fd05f2c0c9e: vmovd %ecx,%xmm1 ││││ │ ││ 0x00007fd05f2c0ca2: vmovd %edx,%xmm2 0.30% ││││ │ ││ 0x00007fd05f2c0ca6: data16 nopw 0x0(%rax,%rax,1) ;*imul {reexecute=0 rethrow=0 return_oop=0} ││││ │ ││ ; - java.lang.StringUTF16::hashCode@17 (line 350) ││││ │ ││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 1.22% ││││ │ ↗││ 0x00007fd05f2c0cb0: movzwl 0x1e(%rdi,%r10,2),%eax 1.91% ││││ │ │││ 0x00007fd05f2c0cb6: movzwl 0x1c(%rdi,%r10,2),%ecx 0.42% ││││ │ │││ 0x00007fd05f2c0cbc: movzwl 0x10(%rdi,%r10,2),%r9d 0.16% ││││ │ │││ 0x00007fd05f2c0cc2: movzwl 0x12(%rdi,%r10,2),%r11d 1.16% ││││ │ │││ 0x00007fd05f2c0cc8: add %r9d,%r8d 1.72% ││││ │ │││ 0x00007fd05f2c0ccb: movzwl 0x14(%rdi,%r10,2),%r9d 0.50% ││││ │ │││ 0x00007fd05f2c0cd1: mov %r8d,%edx 0.26% ││││ │ │││ 0x00007fd05f2c0cd4: shl $0x5,%edx 1.54% ││││ │ │││ 0x00007fd05f2c0cd7: sub %r8d,%edx 1.68% ││││ │ │││ 0x00007fd05f2c0cda: add %r11d,%edx 0.44% ││││ │ │││ 0x00007fd05f2c0cdd: movzwl 0x16(%rdi,%r10,2),%r8d 0.26% ││││ │ │││ 0x00007fd05f2c0ce3: mov %edx,%r11d 1.10% ││││ │ │││ 0x00007fd05f2c0ce6: shl $0x5,%r11d 1.38% ││││ │ │││ 0x00007fd05f2c0cea: sub %edx,%r11d 0.46% ││││ │ │││ 0x00007fd05f2c0ced: add %r9d,%r11d 0.38% ││││ │ │││ 0x00007fd05f2c0cf0: movzwl 0x18(%rdi,%r10,2),%edx 1.10% ││││ │ │││ 0x00007fd05f2c0cf6: mov %r11d,%r9d 1.44% ││││ │ │││ 0x00007fd05f2c0cf9: shl $0x5,%r9d 0.54% ││││ │ │││ 0x00007fd05f2c0cfd: sub %r11d,%r9d 0.38% ││││ │ │││ 0x00007fd05f2c0d00: add %r8d,%r9d 1.64% ││││ │ │││ 0x00007fd05f2c0d03: movzwl 0x1a(%rdi,%r10,2),%r8d 1.40% ││││ │ │││ 0x00007fd05f2c0d09: mov %r9d,%r11d 0.44% ││││ │ │││ 0x00007fd05f2c0d0c: shl $0x5,%r11d 0.56% ││││ │ │││ 0x00007fd05f2c0d10: sub %r9d,%r11d 1.58% ││││ │ │││ 0x00007fd05f2c0d13: add %edx,%r11d 1.97% ││││ │ │││ 0x00007fd05f2c0d16: mov %r11d,%edx 0.22% ││││ │ │││ 0x00007fd05f2c0d19: shl $0x5,%edx 1.02% ││││ │ │││ 0x00007fd05f2c0d1c: sub %r11d,%edx 3.41% ││││ │ │││ 0x00007fd05f2c0d1f: add %r8d,%edx 2.03% ││││ │ │││ 0x00007fd05f2c0d22: mov %edx,%r11d 0.12% ││││ │ │││ 0x00007fd05f2c0d25: shl $0x5,%r11d 1.24% ││││ │ │││ 0x00007fd05f2c0d29: sub %edx,%r11d 2.97% ││││ │ │││ 0x00007fd05f2c0d2c: add %ecx,%r11d 1.83% ││││ │ │││ 0x00007fd05f2c0d2f: mov %r11d,%r9d 0.06% ││││ │ │││ 0x00007fd05f2c0d32: shl $0x5,%r9d 1.16% ││││ │ │││ 0x00007fd05f2c0d36: sub %r11d,%r9d 3.89% ││││ │ │││ 0x00007fd05f2c0d39: add %eax,%r9d ;*iadd {reexecute=0 rethrow=0 return_oop=0} ││││ │ │││ ; - java.lang.StringUTF16::hashCode@23 (line 350) ││││ │ │││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ │││ ; - StringHashCode::stringHashCode@11 (line 14) 1.44% ││││ │ │││ 0x00007fd05f2c0d3c: mov %r9d,%eax ││││ │ │││ 0x00007fd05f2c0d3f: shl $0x5,%eax 1.16% ││││ │ │││ 0x00007fd05f2c0d42: mov %eax,%r8d 1.83% ││││ │ │││ 0x00007fd05f2c0d45: sub %r9d,%r8d ;*imul {reexecute=0 rethrow=0 return_oop=0} ││││ │ │││ ; - java.lang.StringUTF16::hashCode@17 (line 350) ││││ │ │││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ │││ ; - StringHashCode::stringHashCode@11 (line 14) 1.76% ││││ │ │││ 0x00007fd05f2c0d48: add $0x8,%r10d ;*iinc {reexecute=0 rethrow=0 return_oop=0} ││││ │ │││ ; - java.lang.StringUTF16::hashCode@25 (line 349) ││││ │ │││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ │││ ; - StringHashCode::stringHashCode@11 (line 14) ││││ │ │││ 0x00007fd05f2c0d4c: cmp %r13d,%r10d ││││ │ ╰││ 0x00007fd05f2c0d4f: jl 0x00007fd05f2c0cb0 ;*if_icmpge {reexecute=0 rethrow=0 return_oop=0} ││││ │ ││ ; - java.lang.StringUTF16::hashCode@11 (line 349) ││││ │ ││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ ││ ; - StringHashCode::stringHashCode@11 (line 14) ││││ │ ││ 0x00007fd05f2c0d55: mov 0x108(%r15),%r11 ; ImmutableOopMap{rdi=Oop xmm2=NarrowOop } ││││ │ ││ ;*goto {reexecute=1 rethrow=0 return_oop=0} ││││ │ ││ ; - java.lang.StringUTF16::hashCode@28 (line 349) ││││ │ ││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ ││ ; - StringHashCode::stringHashCode@11 (line 14) 0.68% ││││ │ ││ 0x00007fd05f2c0d5c: test %eax,(%r11) ;*goto {reexecute=0 rethrow=0 return_oop=0} ││││ │ ││ ; - java.lang.StringUTF16::hashCode@28 (line 349) ││││ │ ││ ; - java.lang.String::hashCode@39 (line 1505) ││││ │ ││ ; - StringHashCode::stringHashCode@11 (line 14) ││││ │ ││ ; {poll} 0.84% ││││ │ ││ 0x00007fd05f2c0d5f: cmp %ebx,%r10d ││││ │ ╰│ 0x00007fd05f2c0d62: jl 0x00007fd05f2c0c86 ││││ │ │ 0x00007fd05f2c0d68: cmp %r14d,%r10d ││││ │ ╰ 0x00007fd05f2c0d6b: jl 0x00007fd05f2c0c5f ││││ │ 0x00007fd05f2c0d71: mov %r9d,%eax ;*synchronization entry ││││ │ ; - StringHashCode::stringHashCode@-1 (line 14) 0.38% │↘│↘ ↘ ↗ 0x00007fd05f2c0d74: add $0x30,%rsp 0.88% │ │ │ 0x00007fd05f2c0d78: pop %rbp 0.76% │ │ │ 0x00007fd05f2c0d79: mov 0x108(%r15),%r10 │ │ │ 0x00007fd05f2c0d80: test %eax,(%r10) ; {poll_return} 0.28% │ │ │ 0x00007fd05f2c0d83: retq ↘ │ │ 0x00007fd05f2c0d84: mov %ecx,%eax │ ╰ 0x00007fd05f2c0d86: jmp 0x00007fd05f2c0d74 ↘ 0x00007fd05f2c0d88: mov %r14d,%ebx 0x00007fd05f2c0d8b: dec %ebx 0x00007fd05f2c0d8d: cmp %r14d,%ebx 0x00007fd05f2c0d90: jae 0x00007fd05f2c0ee3 0x00007fd05f2c0d96: movzbl 0x10(%r12,%rdx,8),%r9d ;*iand {reexecute=0 rethrow=0 return_oop=0} ; - java.lang.StringLatin1::hashCode@31 (line 196) ; - java.lang.String::hashCode@29 (line 1504) ; - StringHashCode::stringHashCode@11 (line 14) ------------- PR: https://git.openjdk.java.net/jdk/pull/7700
