Mercurial > hg > graal-jvmci-8
diff src/cpu/x86/vm/stubGenerator_x86_64.cpp @ 7475:e2e6bf86682c
8005544: Use 256bit YMM registers in arraycopy stubs on x86
Summary: Use YMM registers in arraycopy and array_fill stubs.
Reviewed-by: roland, twisti
| author | kvn |
|---|---|
| date | Thu, 03 Jan 2013 16:30:47 -0800 |
| parents | 2c7f594145dc |
| children | 989155e2d07a e961c11b85fe |
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--- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp Thu Jan 03 15:09:55 2013 -0800 +++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp Thu Jan 03 16:30:47 2013 -0800 @@ -1286,23 +1286,54 @@ // end_to - destination array end address // qword_count - 64-bits element count, negative // to - scratch - // L_copy_32_bytes - entry label + // L_copy_bytes - entry label // L_copy_8_bytes - exit label // - void copy_32_bytes_forward(Register end_from, Register end_to, + void copy_bytes_forward(Register end_from, Register end_to, Register qword_count, Register to, - Label& L_copy_32_bytes, Label& L_copy_8_bytes) { + Label& L_copy_bytes, Label& L_copy_8_bytes) { DEBUG_ONLY(__ stop("enter at entry label, not here")); Label L_loop; __ align(OptoLoopAlignment); - __ BIND(L_loop); - if(UseUnalignedLoadStores) { - __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); - __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); - __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); - __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); - + if (UseUnalignedLoadStores) { + Label L_end; + // Copy 64-bytes per iteration + __ BIND(L_loop); + if (UseAVX >= 2) { + __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56)); + __ vmovdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0); + __ vmovdqu(xmm1, Address(end_from, qword_count, Address::times_8, -24)); + __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm1); + } else { + __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -56)); + __ movdqu(Address(end_to, qword_count, Address::times_8, -56), xmm0); + __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, -40)); + __ movdqu(Address(end_to, qword_count, Address::times_8, -40), xmm1); + __ movdqu(xmm2, Address(end_from, qword_count, Address::times_8, -24)); + __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm2); + __ movdqu(xmm3, Address(end_from, qword_count, Address::times_8, - 8)); + __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm3); + } + __ BIND(L_copy_bytes); + __ addptr(qword_count, 8); + __ jcc(Assembler::lessEqual, L_loop); + __ subptr(qword_count, 4); // sub(8) and add(4) + __ jccb(Assembler::greater, L_end); + // Copy trailing 32 bytes + if (UseAVX >= 2) { + __ vmovdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); + __ vmovdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); + } else { + __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24)); + __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0); + __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8)); + __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1); + } + __ addptr(qword_count, 4); + __ BIND(L_end); } else { + // Copy 32-bytes per iteration + __ BIND(L_loop); __ movq(to, Address(end_from, qword_count, Address::times_8, -24)); __ movq(Address(end_to, qword_count, Address::times_8, -24), to); __ movq(to, Address(end_from, qword_count, Address::times_8, -16)); @@ -1311,15 +1342,15 @@ __ movq(Address(end_to, qword_count, Address::times_8, - 8), to); __ movq(to, Address(end_from, qword_count, Address::times_8, - 0)); __ movq(Address(end_to, qword_count, Address::times_8, - 0), to); + + __ BIND(L_copy_bytes); + __ addptr(qword_count, 4); + __ jcc(Assembler::lessEqual, L_loop); } - __ BIND(L_copy_32_bytes); - __ addptr(qword_count, 4); - __ jcc(Assembler::lessEqual, L_loop); __ subptr(qword_count, 4); __ jcc(Assembler::less, L_copy_8_bytes); // Copy trailing qwords } - // Copy big chunks backward // // Inputs: @@ -1327,23 +1358,55 @@ // dest - destination array address // qword_count - 64-bits element count // to - scratch - // L_copy_32_bytes - entry label + // L_copy_bytes - entry label // L_copy_8_bytes - exit label // - void copy_32_bytes_backward(Register from, Register dest, + void copy_bytes_backward(Register from, Register dest, Register qword_count, Register to, - Label& L_copy_32_bytes, Label& L_copy_8_bytes) { + Label& L_copy_bytes, Label& L_copy_8_bytes) { DEBUG_ONLY(__ stop("enter at entry label, not here")); Label L_loop; __ align(OptoLoopAlignment); - __ BIND(L_loop); - if(UseUnalignedLoadStores) { - __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); - __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); - __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); - __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); - + if (UseUnalignedLoadStores) { + Label L_end; + // Copy 64-bytes per iteration + __ BIND(L_loop); + if (UseAVX >= 2) { + __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 32)); + __ vmovdqu(Address(dest, qword_count, Address::times_8, 32), xmm0); + __ vmovdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); + __ vmovdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); + } else { + __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 48)); + __ movdqu(Address(dest, qword_count, Address::times_8, 48), xmm0); + __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 32)); + __ movdqu(Address(dest, qword_count, Address::times_8, 32), xmm1); + __ movdqu(xmm2, Address(from, qword_count, Address::times_8, 16)); + __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm2); + __ movdqu(xmm3, Address(from, qword_count, Address::times_8, 0)); + __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm3); + } + __ BIND(L_copy_bytes); + __ subptr(qword_count, 8); + __ jcc(Assembler::greaterEqual, L_loop); + + __ addptr(qword_count, 4); // add(8) and sub(4) + __ jccb(Assembler::less, L_end); + // Copy trailing 32 bytes + if (UseAVX >= 2) { + __ vmovdqu(xmm0, Address(from, qword_count, Address::times_8, 0)); + __ vmovdqu(Address(dest, qword_count, Address::times_8, 0), xmm0); + } else { + __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16)); + __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0); + __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0)); + __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1); + } + __ subptr(qword_count, 4); + __ BIND(L_end); } else { + // Copy 32-bytes per iteration + __ BIND(L_loop); __ movq(to, Address(from, qword_count, Address::times_8, 24)); __ movq(Address(dest, qword_count, Address::times_8, 24), to); __ movq(to, Address(from, qword_count, Address::times_8, 16)); @@ -1352,10 +1415,11 @@ __ movq(Address(dest, qword_count, Address::times_8, 8), to); __ movq(to, Address(from, qword_count, Address::times_8, 0)); __ movq(Address(dest, qword_count, Address::times_8, 0), to); + + __ BIND(L_copy_bytes); + __ subptr(qword_count, 4); + __ jcc(Assembler::greaterEqual, L_loop); } - __ BIND(L_copy_32_bytes); - __ subptr(qword_count, 4); - __ jcc(Assembler::greaterEqual, L_loop); __ addptr(qword_count, 4); __ jcc(Assembler::greater, L_copy_8_bytes); // Copy trailing qwords } @@ -1385,7 +1449,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; + Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; Label L_copy_byte, L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address @@ -1417,7 +1481,7 @@ __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); __ negptr(qword_count); // make the count negative - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1460,8 +1524,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy in 32-bytes chunks - copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); __ jmp(L_copy_4_bytes); return start; @@ -1488,7 +1552,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; + Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_copy_2_bytes; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register count = rdx; // elements count @@ -1531,10 +1595,10 @@ // Check for and copy trailing dword __ BIND(L_copy_4_bytes); __ testl(byte_count, 4); - __ jcc(Assembler::zero, L_copy_32_bytes); + __ jcc(Assembler::zero, L_copy_bytes); __ movl(rax, Address(from, qword_count, Address::times_8)); __ movl(Address(to, qword_count, Address::times_8), rax); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1549,8 +1613,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy in 32-bytes chunks - copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); restore_arg_regs(); inc_counter_np(SharedRuntime::_jbyte_array_copy_ctr); // Update counter after rscratch1 is free @@ -1585,7 +1649,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; + Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes,L_copy_2_bytes,L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register count = rdx; // elements count @@ -1616,7 +1680,7 @@ __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); __ negptr(qword_count); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1652,8 +1716,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy in 32-bytes chunks - copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); __ jmp(L_copy_4_bytes); return start; @@ -1700,7 +1764,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes; + Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register count = rdx; // elements count @@ -1735,10 +1799,10 @@ // Check for and copy trailing dword __ BIND(L_copy_4_bytes); __ testl(word_count, 2); - __ jcc(Assembler::zero, L_copy_32_bytes); + __ jcc(Assembler::zero, L_copy_bytes); __ movl(rax, Address(from, qword_count, Address::times_8)); __ movl(Address(to, qword_count, Address::times_8), rax); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1753,8 +1817,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy in 32-bytes chunks - copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); restore_arg_regs(); inc_counter_np(SharedRuntime::_jshort_array_copy_ctr); // Update counter after rscratch1 is free @@ -1790,7 +1854,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; + Label L_copy_bytes, L_copy_8_bytes, L_copy_4_bytes, L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register count = rdx; // elements count @@ -1826,7 +1890,7 @@ __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); __ negptr(qword_count); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1853,8 +1917,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy 32-bytes chunks - copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); __ jmp(L_copy_4_bytes); return start; @@ -1882,7 +1946,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; + Label L_copy_bytes, L_copy_8_bytes, L_copy_2_bytes, L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register count = rdx; // elements count @@ -1916,10 +1980,10 @@ // Check for and copy trailing dword __ testl(dword_count, 1); - __ jcc(Assembler::zero, L_copy_32_bytes); + __ jcc(Assembler::zero, L_copy_bytes); __ movl(rax, Address(from, dword_count, Address::times_4, -4)); __ movl(Address(to, dword_count, Address::times_4, -4), rax); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -1937,8 +2001,8 @@ __ leave(); // required for proper stackwalking of RuntimeStub frame __ ret(0); - // Copy in 32-bytes chunks - copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); __ bind(L_exit); if (is_oop) { @@ -1976,7 +2040,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_exit; + Label L_copy_bytes, L_copy_8_bytes, L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register qword_count = rdx; // elements count @@ -2008,7 +2072,7 @@ __ lea(end_from, Address(from, qword_count, Address::times_8, -8)); __ lea(end_to, Address(to, qword_count, Address::times_8, -8)); __ negptr(qword_count); - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -2027,8 +2091,8 @@ __ ret(0); } - // Copy 64-byte chunks - copy_32_bytes_forward(end_from, end_to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_forward(end_from, end_to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); if (is_oop) { __ BIND(L_exit); @@ -2065,7 +2129,7 @@ StubCodeMark mark(this, "StubRoutines", name); address start = __ pc(); - Label L_copy_32_bytes, L_copy_8_bytes, L_exit; + Label L_copy_bytes, L_copy_8_bytes, L_exit; const Register from = rdi; // source array address const Register to = rsi; // destination array address const Register qword_count = rdx; // elements count @@ -2091,7 +2155,7 @@ gen_write_ref_array_pre_barrier(to, saved_count, dest_uninitialized); } - __ jmp(L_copy_32_bytes); + __ jmp(L_copy_bytes); // Copy trailing qwords __ BIND(L_copy_8_bytes); @@ -2110,8 +2174,8 @@ __ ret(0); } - // Copy in 32-bytes chunks - copy_32_bytes_backward(from, to, qword_count, rax, L_copy_32_bytes, L_copy_8_bytes); + // Copy in multi-bytes chunks + copy_bytes_backward(from, to, qword_count, rax, L_copy_bytes, L_copy_8_bytes); if (is_oop) { __ BIND(L_exit);