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src/hotspot/cpu/x86/c2_MacroAssembler_x86.cpp

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3544     arrays_hashcode_elvload(vtmp[idx], Address(ary1, index, Address::times(elsize), 8 * idx * elsize), eltype);
3545   }
3546   // vresult = vresult * vnext + ary1[index+8*idx:index+8*idx+7];
3547   for (int idx = 0; idx < 4; idx++) {
3548     vpmulld(vresult[idx], vresult[idx], vnext, Assembler::AVX_256bit);
3549     arrays_hashcode_elvcast(vtmp[idx], eltype);
3550     vpaddd(vresult[idx], vresult[idx], vtmp[idx], Assembler::AVX_256bit);
3551   }
3552   // index += 32;
3553   addl(index, 32);
3554   // index < bound;
3555   cmpl(index, bound);
3556   jcc(Assembler::less, UNROLLED_VECTOR_LOOP_BEGIN);
3557   // }
3558 
3559   lea(ary1, Address(ary1, bound, Address::times(elsize)));
3560   subl(cnt1, bound);
3561   // release bound
3562 
3563   // vresult *= IntVector.fromArray(I256, power_of_31_backwards, 1);

3564   for (int idx = 0; idx < 4; idx++) {
3565     lea(tmp2, ExternalAddress(StubRoutines::x86::arrays_hashcode_powers_of_31() + ((8 * idx + 1) * sizeof(jint))));
3566     arrays_hashcode_elvload(vcoef[idx], Address(tmp2, 0), T_INT);
3567     vpmulld(vresult[idx], vresult[idx], vcoef[idx], Assembler::AVX_256bit);
3568   }
3569   // result += vresult.reduceLanes(ADD);
3570   for (int idx = 0; idx < 4; idx++) {
3571     reduceI(Op_AddReductionVI, 256/(sizeof(jint) * 8), result, result, vresult[idx], vtmp[(idx * 2 + 0) % 4], vtmp[(idx * 2 + 1) % 4]);
3572   }
3573 
3574   // } else if (cnt1 < 32) {
3575 
3576   bind(SHORT_UNROLLED_BEGIN);
3577   // int i = 1;
3578   movl(index, 1);
3579   cmpl(index, cnt1);
3580   jcc(Assembler::greaterEqual, SHORT_UNROLLED_LOOP_EXIT);
3581 
3582   // for (; i < cnt1 ; i += 2) {
3583   bind(SHORT_UNROLLED_LOOP_BEGIN);
3584   movl(tmp3, 961);
3585   imull(result, tmp3);
3586   arrays_hashcode_elload(tmp2, Address(ary1, index, Address::times(elsize), -elsize), eltype);

3544     arrays_hashcode_elvload(vtmp[idx], Address(ary1, index, Address::times(elsize), 8 * idx * elsize), eltype);
3545   }
3546   // vresult = vresult * vnext + ary1[index+8*idx:index+8*idx+7];
3547   for (int idx = 0; idx < 4; idx++) {
3548     vpmulld(vresult[idx], vresult[idx], vnext, Assembler::AVX_256bit);
3549     arrays_hashcode_elvcast(vtmp[idx], eltype);
3550     vpaddd(vresult[idx], vresult[idx], vtmp[idx], Assembler::AVX_256bit);
3551   }
3552   // index += 32;
3553   addl(index, 32);
3554   // index < bound;
3555   cmpl(index, bound);
3556   jcc(Assembler::less, UNROLLED_VECTOR_LOOP_BEGIN);
3557   // }
3558 
3559   lea(ary1, Address(ary1, bound, Address::times(elsize)));
3560   subl(cnt1, bound);
3561   // release bound
3562 
3563   // vresult *= IntVector.fromArray(I256, power_of_31_backwards, 1);
3564   lea(tmp2, ExternalAddress(StubRoutines::x86::arrays_hashcode_powers_of_31() + (0 * sizeof(jint))));
3565   for (int idx = 0; idx < 4; idx++) {
3566     arrays_hashcode_elvload(vcoef[idx], Address(tmp2, (int)((8 * idx + 1) * sizeof(jint))), T_INT);

3567     vpmulld(vresult[idx], vresult[idx], vcoef[idx], Assembler::AVX_256bit);
3568   }
3569   // result += vresult.reduceLanes(ADD);
3570   for (int idx = 0; idx < 4; idx++) {
3571     reduceI(Op_AddReductionVI, 256/(sizeof(jint) * 8), result, result, vresult[idx], vtmp[(idx * 2 + 0) % 4], vtmp[(idx * 2 + 1) % 4]);
3572   }
3573 
3574   // } else if (cnt1 < 32) {
3575 
3576   bind(SHORT_UNROLLED_BEGIN);
3577   // int i = 1;
3578   movl(index, 1);
3579   cmpl(index, cnt1);
3580   jcc(Assembler::greaterEqual, SHORT_UNROLLED_LOOP_EXIT);
3581 
3582   // for (; i < cnt1 ; i += 2) {
3583   bind(SHORT_UNROLLED_LOOP_BEGIN);
3584   movl(tmp3, 961);
3585   imull(result, tmp3);
3586   arrays_hashcode_elload(tmp2, Address(ary1, index, Address::times(elsize), -elsize), eltype);
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