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[37.24.206.209]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1f9ebab66e6sm13311205ad.241.2024.06.21.05.51.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Jun 2024 05:51:43 -0700 (PDT) Message-ID: <70a41e52-4496-4ff8-956b-8f4fe170df46@suse.com> Date: Fri, 21 Jun 2024 14:51:37 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH v2 5/8] x86/APX: extend TEST-by-imm7 optimization to CTESTcc From: Jan Beulich To: Binutils Cc: "H.J. Lu" , Lili Cui , "Jiang, Haochen" References: <72726722-9d28-4d82-84ef-320e1786b0e4@suse.com> Content-Language: en-US Autocrypt: addr=jbeulich@suse.com; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL In-Reply-To: <72726722-9d28-4d82-84ef-320e1786b0e4@suse.com> X-Spam-Status: No, score=-3024.5 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: binutils-bounces+patchwork=sourceware.org@sourceware.org The same properties apply there. --- I actually wonder why this optimization is limited to -Os: Reduced encoding size is also a performance benefit, by reducing decode bandwith needs and cache footprint. Imo restriction to -Os should cover only cases where there may be a negative impact on performance, i.e. when there's "a price to pay" for the size reduction. --- v2: New. --- a/gas/config/tc-i386.c +++ b/gas/config/tc-i386.c @@ -4770,7 +4770,9 @@ optimize_encoding (void) } if (optimize_for_space - && i.tm.mnem_off == MN_test + && (i.tm.mnem_off == MN_test + || (i.tm.base_opcode == 0xf6 + && i.tm.opcode_space == SPACE_EVEXMAP4)) && i.reg_operands == 1 && i.imm_operands == 1 && !i.types[1].bitfield.byte @@ -4779,9 +4781,13 @@ optimize_encoding (void) && fits_in_imm7 (i.op[0].imms->X_add_number)) { /* Optimize: -Os: - test $imm7, %r64/%r32/%r16 -> test $imm7, %r8 + test $imm7, %r64/%r32/%r16 -> test $imm7, %r8 + ctest $imm7, %r64/%r32/%r16 -> ctest $imm7, %r8 */ unsigned int base_regnum = i.op[1].regs->reg_num; + + gas_assert (!i.tm.opcode_modifier.modrm || i.tm.extension_opcode == 0); + if (flag_code == CODE_64BIT || base_regnum < 4) { i.types[1].bitfield.byte = 1; --- a/gas/testsuite/gas/i386/x86-64-optimize-3.d +++ b/gas/testsuite/gas/i386/x86-64-optimize-3.d @@ -28,6 +28,50 @@ Disassembly of section .text: +[a-f0-9]+: 41 f6 c4 7f test \$0x7f,%r12b +[a-f0-9]+: 41 f6 c4 7f test \$0x7f,%r12b +[a-f0-9]+: 41 f6 c4 7f test \$0x7f,%r12b + +[a-f0-9]+: d5 10 f6 c6 7f test \$0x7f,%r22b + +[a-f0-9]+: d5 10 f6 c6 7f test \$0x7f,%r22b + +[a-f0-9]+: d5 10 f6 c6 7f test \$0x7f,%r22b + +[a-f0-9]+: d5 10 f6 c6 7f test \$0x7f,%r22b + +[a-f0-9]+: 62 f4 04 0a f6 c3 7f ctestt( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 0a f6 c3 7f ctestt( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 0a f6 c3 7f ctestt( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 0a f6 c3 7f ctestt( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 0a f6 c7 7f ctestt( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 0a f6 c7 7f ctestt( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 0a f6 c7 7f ctestt( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 0a f6 c7 7f ctestt( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 d4 04 0a f6 c1 7f ctestt( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 0a f6 c1 7f ctestt( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 0a f6 c1 7f ctestt( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 0a f6 c1 7f ctestt( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 0a f6 c4 7f ctestt( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 0a f6 c4 7f ctestt( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 0a f6 c4 7f ctestt( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 0a f6 c4 7f ctestt( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 fc 04 0a f6 c6 7f ctestt( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 0a f6 c6 7f ctestt( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 0a f6 c6 7f ctestt( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 0a f6 c6 7f ctestt( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 f4 04 02 f6 c3 7f ctestb( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 02 f6 c3 7f ctestb( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 02 f6 c3 7f ctestb( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 02 f6 c3 7f ctestb( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 04 02 f6 c7 7f ctestb( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 02 f6 c7 7f ctestb( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 02 f6 c7 7f ctestb( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 f4 04 02 f6 c7 7f ctestb( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 d4 04 02 f6 c1 7f ctestb( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 02 f6 c1 7f ctestb( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 02 f6 c1 7f ctestb( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 02 f6 c1 7f ctestb( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 04 02 f6 c4 7f ctestb( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 02 f6 c4 7f ctestb( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 02 f6 c4 7f ctestb( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 d4 04 02 f6 c4 7f ctestb( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 fc 04 02 f6 c6 7f ctestb( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 02 f6 c6 7f ctestb( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 02 f6 c6 7f ctestb( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 fc 04 02 f6 c6 7f ctestb( \{dfv=\})? \$0x7f,%r22b +[a-f0-9]+: 20 c9 and %cl,%cl +[a-f0-9]+: 66 21 d2 and %dx,%dx +[a-f0-9]+: 21 db and %ebx,%ebx --- a/gas/testsuite/gas/i386/x86-64-optimize-3.s +++ b/gas/testsuite/gas/i386/x86-64-optimize-3.s @@ -6,22 +6,28 @@ _start: testl $0x7f, %eax testw $0x7f, %ax testb $0x7f, %al - test $0x7f, %rbx - test $0x7f, %ebx - test $0x7f, %bx - test $0x7f, %bl - test $0x7f, %rdi - test $0x7f, %edi - test $0x7f, %di - test $0x7f, %dil - test $0x7f, %r9 - test $0x7f, %r9d - test $0x7f, %r9w - test $0x7f, %r9b - test $0x7f, %r12 - test $0x7f, %r12d - test $0x7f, %r12w - test $0x7f, %r12b + .irp tst, test, "{evex} test", ctestc + \tst $0x7f, %rbx + \tst $0x7f, %ebx + \tst $0x7f, %bx + \tst $0x7f, %bl + \tst $0x7f, %rdi + \tst $0x7f, %edi + \tst $0x7f, %di + \tst $0x7f, %dil + \tst $0x7f, %r9 + \tst $0x7f, %r9d + \tst $0x7f, %r9w + \tst $0x7f, %r9b + \tst $0x7f, %r12 + \tst $0x7f, %r12d + \tst $0x7f, %r12w + \tst $0x7f, %r12b + \tst $0x7f, %r22 + \tst $0x7f, %r22d + \tst $0x7f, %r22w + \tst $0x7f, %r22b + .endr and %cl, %cl and %dx, %dx --- a/gas/testsuite/gas/i386/x86-64-optimize-3b.d +++ b/gas/testsuite/gas/i386/x86-64-optimize-3b.d @@ -29,6 +29,50 @@ Disassembly of section .text: +[a-f0-9]+: 41 f7 c4 7f 00 00 00 test \$0x7f,%r12d +[a-f0-9]+: 66 41 f7 c4 7f 00 test \$0x7f,%r12w +[a-f0-9]+: 41 f6 c4 7f test \$0x7f,%r12b + +[a-f0-9]+: d5 18 f7 c6 7f 00 00 00 test \$0x7f,%r22 + +[a-f0-9]+: d5 10 f7 c6 7f 00 00 00 test \$0x7f,%r22d + +[a-f0-9]+: 66 d5 10 f7 c6 7f 00 test \$0x7f,%r22w + +[a-f0-9]+: d5 10 f6 c6 7f test \$0x7f,%r22b + +[a-f0-9]+: 62 f4 84 0a f7 c3 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%rbx + +[a-f0-9]+: 62 f4 04 0a f7 c3 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%ebx + +[a-f0-9]+: 62 f4 05 0a f7 c3 7f 00 ctestt( \{dfv=\})? \$0x7f,%bx + +[a-f0-9]+: 62 f4 04 0a f6 c3 7f ctestt( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 84 0a f7 c7 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%rdi + +[a-f0-9]+: 62 f4 04 0a f7 c7 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%edi + +[a-f0-9]+: 62 f4 05 0a f7 c7 7f 00 ctestt( \{dfv=\})? \$0x7f,%di + +[a-f0-9]+: 62 f4 04 0a f6 c7 7f ctestt( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 d4 84 0a f7 c1 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r9 + +[a-f0-9]+: 62 d4 04 0a f7 c1 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r9d + +[a-f0-9]+: 62 d4 05 0a f7 c1 7f 00 ctestt( \{dfv=\})? \$0x7f,%r9w + +[a-f0-9]+: 62 d4 04 0a f6 c1 7f ctestt( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 84 0a f7 c4 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r12 + +[a-f0-9]+: 62 d4 04 0a f7 c4 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r12d + +[a-f0-9]+: 62 d4 05 0a f7 c4 7f 00 ctestt( \{dfv=\})? \$0x7f,%r12w + +[a-f0-9]+: 62 d4 04 0a f6 c4 7f ctestt( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 fc 84 0a f7 c6 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r22 + +[a-f0-9]+: 62 fc 04 0a f7 c6 7f 00 00 00 ctestt( \{dfv=\})? \$0x7f,%r22d + +[a-f0-9]+: 62 fc 05 0a f7 c6 7f 00 ctestt( \{dfv=\})? \$0x7f,%r22w + +[a-f0-9]+: 62 fc 04 0a f6 c6 7f ctestt( \{dfv=\})? \$0x7f,%r22b + +[a-f0-9]+: 62 f4 84 02 f7 c3 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%rbx + +[a-f0-9]+: 62 f4 04 02 f7 c3 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%ebx + +[a-f0-9]+: 62 f4 05 02 f7 c3 7f 00 ctestb( \{dfv=\})? \$0x7f,%bx + +[a-f0-9]+: 62 f4 04 02 f6 c3 7f ctestb( \{dfv=\})? \$0x7f,%bl + +[a-f0-9]+: 62 f4 84 02 f7 c7 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%rdi + +[a-f0-9]+: 62 f4 04 02 f7 c7 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%edi + +[a-f0-9]+: 62 f4 05 02 f7 c7 7f 00 ctestb( \{dfv=\})? \$0x7f,%di + +[a-f0-9]+: 62 f4 04 02 f6 c7 7f ctestb( \{dfv=\})? \$0x7f,%dil + +[a-f0-9]+: 62 d4 84 02 f7 c1 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r9 + +[a-f0-9]+: 62 d4 04 02 f7 c1 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r9d + +[a-f0-9]+: 62 d4 05 02 f7 c1 7f 00 ctestb( \{dfv=\})? \$0x7f,%r9w + +[a-f0-9]+: 62 d4 04 02 f6 c1 7f ctestb( \{dfv=\})? \$0x7f,%r9b + +[a-f0-9]+: 62 d4 84 02 f7 c4 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r12 + +[a-f0-9]+: 62 d4 04 02 f7 c4 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r12d + +[a-f0-9]+: 62 d4 05 02 f7 c4 7f 00 ctestb( \{dfv=\})? \$0x7f,%r12w + +[a-f0-9]+: 62 d4 04 02 f6 c4 7f ctestb( \{dfv=\})? \$0x7f,%r12b + +[a-f0-9]+: 62 fc 84 02 f7 c6 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r22 + +[a-f0-9]+: 62 fc 04 02 f7 c6 7f 00 00 00 ctestb( \{dfv=\})? \$0x7f,%r22d + +[a-f0-9]+: 62 fc 05 02 f7 c6 7f 00 ctestb( \{dfv=\})? \$0x7f,%r22w + +[a-f0-9]+: 62 fc 04 02 f6 c6 7f ctestb( \{dfv=\})? \$0x7f,%r22b +[a-f0-9]+: 84 c9 test %cl,%cl +[a-f0-9]+: 66 85 d2 test %dx,%dx +[a-f0-9]+: 21 db and %ebx,%ebx --- a/opcodes/i386-opc.tbl +++ b/opcodes/i386-opc.tbl @@ -357,10 +357,10 @@ test, 0x84, 0, D|W|C|CheckOperandSize|Mo test, 0xa8, 0, W|No_sSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Acc|Byte|Word|Dword|Qword } test, 0xf6/0, 0, W|Modrm|No_sSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } test, 0x840a, 0, D|W|C|CheckOperandSize|Modrm|EVexMap4|Scc|No_sSuf, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } -test, 0xf60a/0, 0, W|Modrm|EVexMap4|Scc|No_sSuf, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } +test, 0xf60a/0, 0, W|Modrm|EVexMap4|Scc|No_sSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } ctest, 0x840, APX_F, D|W|C|CheckOperandSize|Modrm|EVexMap4|Scc|No_sSuf, { Reg8|Reg16|Reg32|Reg64, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } -ctest, 0xf60/0, APX_F, W|Modrm|EVexMap4|Scc|No_sSuf, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex } +ctest, 0xf60/0, APX_F, W|Modrm|EVexMap4|Scc|No_sSuf|Optimize, { Imm8|Imm16|Imm32|Imm32S, Reg8|Reg16|Reg32|Reg64|Unspecified|BaseIndex }