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Wed, 07 Feb 2024 16:31:05 -0800 (PST) X-Forwarded-Encrypted: i=1; AJvYcCXAVAVglDx/L/YwIz+1usMXnSolWqg7tMgyx3PSqnnSeNKRx8qKUEaVWJccDs+iAuOF4WZWsbPoNlVvevtiaORcbwRWW5hg4kLYo/vXS6y0jj61WCKG4jDVD9vyrSKQasxlfmzU0axDl6k= Received: from patrick-ThinkPad-X1-Carbon-Gen-8.hq.rivosinc.com ([12.44.203.122]) by smtp.gmail.com with ESMTPSA id o26-20020a629a1a000000b006e0521c2156sm2442777pfe.173.2024.02.07.16.31.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 Feb 2024 16:31:04 -0800 (PST) From: Patrick O'Neill To: gcc-patches@gcc.gnu.org Cc: gnu-toolchain@rivosinc.com, ved@rivosinc.com, ewlu@rivosinc.com, Patrick O'Neill Subject: [RFC 1/3] RISC-V: Add basic Zaamo and Zalrsc support Date: Wed, 7 Feb 2024 16:30:28 -0800 Message-ID: <20240208003030.143593-1-patrick@rivosinc.com> X-Mailer: git-send-email 2.42.0 MIME-Version: 1.0 X-Spam-Status: No, score=-11.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, GIT_PATCH_0, KAM_SHORT, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE 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: gcc-patches@gcc.gnu.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: Gcc-patches mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: gcc-patches-bounces+incoming=patchwork.ozlabs.org@gcc.gnu.org There is a proposal to split the A extension into two parts: Zaamo and Zalrsc. This patch adds basic support by making the A extension imply Zaamo and Zalrsc. Proposal: https://github.com/riscv/riscv-zaamo-zalrsc/tags gcc/ChangeLog: * common/config/riscv/riscv-common.cc: Add Zaamo and Zalrsc. * config/riscv/arch-canonicalize: Make A imply Zaamo and Zalrsc. * config/riscv/riscv.opt: Add Zaamo and Zalrsc * config/riscv/sync.md: Convert TARGET_ATOMIC to TARGET_ZAAMO and TARGET_ZALRSC. gcc/testsuite/ChangeLog: * gcc.target/riscv/attribute-15.c: Adjust expected arch string. * gcc.target/riscv/attribute-16.c: Ditto. * gcc.target/riscv/attribute-17.c: Ditto. * gcc.target/riscv/attribute-18.c: Ditto. * gcc.target/riscv/pr110696.c: Ditto. Signed-off-by: Edwin Lu Co-authored-by: Patrick O'Neill --- Tested with rv64imafdcv. --- gcc/common/config/riscv/riscv-common.cc | 11 +++++-- gcc/config/riscv/arch-canonicalize | 1 + gcc/config/riscv/riscv.opt | 6 +++- gcc/config/riscv/sync.md | 30 +++++++++---------- gcc/testsuite/gcc.target/riscv/attribute-15.c | 2 +- gcc/testsuite/gcc.target/riscv/attribute-16.c | 2 +- gcc/testsuite/gcc.target/riscv/attribute-17.c | 2 +- gcc/testsuite/gcc.target/riscv/attribute-18.c | 2 +- gcc/testsuite/gcc.target/riscv/pr110696.c | 2 +- 9 files changed, 35 insertions(+), 23 deletions(-) -- 2.34.1 diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc index 631ce8309a0..f5e709ccc95 100644 --- a/gcc/common/config/riscv/riscv-common.cc +++ b/gcc/common/config/riscv/riscv-common.cc @@ -77,6 +77,9 @@ static const riscv_implied_info_t riscv_implied_info[] = {"f", "zicsr"}, {"d", "zicsr"}, + {"a", "zaamo"}, + {"a", "zalrsc"}, + {"zdinx", "zfinx"}, {"zfinx", "zicsr"}, {"zdinx", "zicsr"}, @@ -250,6 +253,8 @@ static const struct riscv_ext_version riscv_ext_version_table[] = {"za64rs", ISA_SPEC_CLASS_NONE, 1, 0}, {"za128rs", ISA_SPEC_CLASS_NONE, 1, 0}, {"zawrs", ISA_SPEC_CLASS_NONE, 1, 0}, + {"zaamo", ISA_SPEC_CLASS_NONE, 1, 0}, + {"zalrsc", ISA_SPEC_CLASS_NONE, 1, 0}, {"zba", ISA_SPEC_CLASS_NONE, 1, 0}, {"zbb", ISA_SPEC_CLASS_NONE, 1, 0}, @@ -1501,9 +1506,11 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] = {"zifencei", &gcc_options::x_riscv_zi_subext, MASK_ZIFENCEI}, {"zicond", &gcc_options::x_riscv_zi_subext, MASK_ZICOND}, - {"za64rs", &gcc_options::x_riscv_za_subext, MASK_ZA64RS}, + {"za64rs", &gcc_options::x_riscv_za_subext, MASK_ZA64RS}, {"za128rs", &gcc_options::x_riscv_za_subext, MASK_ZA128RS}, - {"zawrs", &gcc_options::x_riscv_za_subext, MASK_ZAWRS}, + {"zawrs", &gcc_options::x_riscv_za_subext, MASK_ZAWRS}, + {"zaamo", &gcc_options::x_riscv_za_subext, MASK_ZAAMO}, + {"zalrsc", &gcc_options::x_riscv_za_subext, MASK_ZALRSC}, {"zba", &gcc_options::x_riscv_zb_subext, MASK_ZBA}, {"zbb", &gcc_options::x_riscv_zb_subext, MASK_ZBB}, diff --git a/gcc/config/riscv/arch-canonicalize b/gcc/config/riscv/arch-canonicalize index 629bed85347..16d2f4118e1 100755 --- a/gcc/config/riscv/arch-canonicalize +++ b/gcc/config/riscv/arch-canonicalize @@ -40,6 +40,7 @@ LONG_EXT_PREFIXES = ['z', 's', 'h', 'x'] # IMPLIED_EXT = { "d" : ["f", "zicsr"], + "a" : ["zaamo", "zalrsc"], "f" : ["zicsr"], "zdinx" : ["zfinx", "zicsr"], "zfinx" : ["zicsr"], diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt index f6ff70b2b30..143f68b76da 100644 --- a/gcc/config/riscv/riscv.opt +++ b/gcc/config/riscv/riscv.opt @@ -238,7 +238,11 @@ Mask(ZICCRSE) Var(riscv_zi_subext) TargetVariable int riscv_za_subext -Mask(ZAWRS) Var(riscv_za_subext) +Mask(ZAWRS) Var(riscv_za_subext) + +Mask(ZAAMO) Var(riscv_za_subext) + +Mask(ZALRSC) Var(riscv_za_subext) Mask(ZA64RS) Var(riscv_za_subext) diff --git a/gcc/config/riscv/sync.md b/gcc/config/riscv/sync.md index 54bb0a66518..0b4ac914327 100644 --- a/gcc/config/riscv/sync.md +++ b/gcc/config/riscv/sync.md @@ -93,7 +93,7 @@ (match_operand:GPR 1 "reg_or_0_operand" "rJ")) (match_operand:SI 2 "const_int_operand")] ;; model UNSPEC_SYNC_OLD_OP))] - "TARGET_ATOMIC" + "TARGET_ZAAMO" "amo.%A2\tzero,%z1,%0" [(set_attr "type" "atomic") (set (attr "length") (const_int 4))]) @@ -107,7 +107,7 @@ (match_operand:GPR 2 "reg_or_0_operand" "rJ")) (match_operand:SI 3 "const_int_operand")] ;; model UNSPEC_SYNC_OLD_OP))] - "TARGET_ATOMIC" + "TARGET_ZAAMO" "amo.%A3\t%0,%z2,%1" [(set_attr "type" "atomic") (set (attr "length") (const_int 4))]) @@ -125,7 +125,7 @@ (match_operand:SI 5 "register_operand" "rI") ;; not_mask (clobber (match_scratch:SI 6 "=&r")) ;; tmp_1 (clobber (match_scratch:SI 7 "=&r"))] ;; tmp_2 - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" "lr.w%I3\t%0, %1\;" @@ -144,7 +144,7 @@ (not:SHORT (and:SHORT (match_operand:SHORT 1 "memory_operand") ;; mem location (match_operand:SHORT 2 "reg_or_0_operand"))) ;; value for op (match_operand:SI 3 "const_int_operand")] ;; model - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { /* We have no QImode/HImode atomics, so form a mask, then use subword_atomic_fetch_strong_nand to implement a LR/SC version of the @@ -192,7 +192,7 @@ (match_operand:SI 5 "register_operand" "rI") ;; not_mask (clobber (match_scratch:SI 6 "=&r")) ;; tmp_1 (clobber (match_scratch:SI 7 "=&r"))] ;; tmp_2 - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" "lr.w%I3\t%0, %1\;" @@ -212,7 +212,7 @@ (any_atomic:SHORT (match_operand:SHORT 1 "memory_operand") ;; mem location (match_operand:SHORT 2 "reg_or_0_operand")) ;; value for op (match_operand:SI 3 "const_int_operand")] ;; model - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { /* We have no QImode/HImode atomics, so form a mask, then use subword_atomic_fetch_strong_ to implement a LR/SC version of the @@ -256,7 +256,7 @@ UNSPEC_SYNC_EXCHANGE)) (set (match_dup 1) (match_operand:GPR 2 "register_operand" "0"))] - "TARGET_ATOMIC" + "TARGET_ZAAMO" "amoswap.%A3\t%0,%z2,%1" [(set_attr "type" "atomic") (set (attr "length") (const_int 4))]) @@ -266,7 +266,7 @@ (match_operand:SHORT 1 "memory_operand") ;; mem location (match_operand:SHORT 2 "register_operand") ;; value (match_operand:SI 3 "const_int_operand")] ;; model - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { rtx old = gen_reg_rtx (SImode); rtx mem = operands[1]; @@ -303,7 +303,7 @@ UNSPEC_SYNC_EXCHANGE_SUBWORD)) (match_operand:SI 4 "reg_or_0_operand" "rI") ;; not_mask (clobber (match_scratch:SI 5 "=&r"))] ;; tmp_1 - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" "lr.w%I3\t%0, %1\;" @@ -325,7 +325,7 @@ (match_operand:SI 5 "const_int_operand")] ;; mod_f UNSPEC_COMPARE_AND_SWAP)) (clobber (match_scratch:GPR 6 "=&r"))] - "TARGET_ATOMIC" + "TARGET_ZALRSC" { enum memmodel model_success = (enum memmodel) INTVAL (operands[4]); enum memmodel model_failure = (enum memmodel) INTVAL (operands[5]); @@ -351,7 +351,7 @@ (match_operand:SI 5 "const_int_operand" "") ;; is_weak (match_operand:SI 6 "const_int_operand" "") ;; mod_s (match_operand:SI 7 "const_int_operand" "")] ;; mod_f - "TARGET_ATOMIC" + "TARGET_ZALRSC" { emit_insn (gen_atomic_cas_value_strong (operands[1], operands[2], operands[3], operands[4], @@ -385,7 +385,7 @@ (match_operand:SI 5 "const_int_operand") ;; is_weak (match_operand:SI 6 "const_int_operand") ;; mod_s (match_operand:SI 7 "const_int_operand")] ;; mod_f - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { emit_insn (gen_atomic_cas_value_strong (operands[1], operands[2], operands[3], operands[4], @@ -430,7 +430,7 @@ (match_operand:SI 4 "const_int_operand") ;; mod_s (match_operand:SI 5 "const_int_operand") ;; mod_f (match_scratch:SHORT 6)] - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { /* We have no QImode/HImode atomics, so form a mask, then use subword_atomic_cas_strong to implement a LR/SC version of the @@ -488,7 +488,7 @@ (match_operand:SI 5 "register_operand" "rI") ;; mask (match_operand:SI 6 "register_operand" "rI") ;; not_mask (clobber (match_scratch:SI 7 "=&r"))] ;; tmp_1 - "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC" + "TARGET_ZALRSC && TARGET_INLINE_SUBWORD_ATOMIC" { return "1:\;" "lr.w%I4\t%0, %1\;" @@ -507,7 +507,7 @@ [(match_operand:QI 0 "register_operand" "") ;; bool output (match_operand:QI 1 "memory_operand" "+A") ;; memory (match_operand:SI 2 "const_int_operand" "")] ;; model - "TARGET_ATOMIC" + "TARGET_ZALRSC" { /* We have no QImode atomics, so use the address LSBs to form a mask, then use an aligned SImode atomic. */ diff --git a/gcc/testsuite/gcc.target/riscv/attribute-15.c b/gcc/testsuite/gcc.target/riscv/attribute-15.c index 59efeb6ea45..a2e394b6489 100644 --- a/gcc/testsuite/gcc.target/riscv/attribute-15.c +++ b/gcc/testsuite/gcc.target/riscv/attribute-15.c @@ -3,4 +3,4 @@ int foo() { } -/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p0_m2p0_a2p0_f2p0_d2p0_c2p0\"" } } */ +/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p0_m2p0_a2p0_f2p0_d2p0_c2p0_zaamo1p0_zalrsc1p0\"" } } */ diff --git a/gcc/testsuite/gcc.target/riscv/attribute-16.c b/gcc/testsuite/gcc.target/riscv/attribute-16.c index 26f961efb48..d2b18160cb5 100644 --- a/gcc/testsuite/gcc.target/riscv/attribute-16.c +++ b/gcc/testsuite/gcc.target/riscv/attribute-16.c @@ -3,4 +3,4 @@ int foo() { } -/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p1_m2p0_a2p0_f2p2_d2p2_c2p0_zicsr2p0" } } */ +/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p1_m2p0_a2p0_f2p2_d2p2_c2p0_zicsr2p0_zifencei2p0_zaamo1p0_zalrsc1p0\"" } } */ diff --git a/gcc/testsuite/gcc.target/riscv/attribute-17.c b/gcc/testsuite/gcc.target/riscv/attribute-17.c index 0abff3705d9..fc2f488a3ac 100644 --- a/gcc/testsuite/gcc.target/riscv/attribute-17.c +++ b/gcc/testsuite/gcc.target/riscv/attribute-17.c @@ -3,4 +3,4 @@ int foo() { } -/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_zicsr2p0" } } */ +/* { dg-final { scan-assembler ".attribute arch, \"rv32i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_zicsr2p0_zifencei2p0_zaamo1p0_zalrsc1p0\"" } } */ diff --git a/gcc/testsuite/gcc.target/riscv/attribute-18.c b/gcc/testsuite/gcc.target/riscv/attribute-18.c index fddbf15fc3e..eefd602103d 100644 --- a/gcc/testsuite/gcc.target/riscv/attribute-18.c +++ b/gcc/testsuite/gcc.target/riscv/attribute-18.c @@ -1,4 +1,4 @@ /* { dg-do compile } */ /* { dg-options "-mriscv-attribute -march=rv64imafdc -mabi=lp64d -misa-spec=2.2" } */ int foo() {} -/* { dg-final { scan-assembler ".attribute arch, \"rv64i2p0_m2p0_a2p0_f2p0_d2p0_c2p0\"" } } */ +/* { dg-final { scan-assembler ".attribute arch, \"rv64i2p0_m2p0_a2p0_f2p0_d2p0_c2p0_zaamo1p0_zalrsc1p0\"" } } */ diff --git a/gcc/testsuite/gcc.target/riscv/pr110696.c b/gcc/testsuite/gcc.target/riscv/pr110696.c index a630f04e74f..08682a047e0 100644 --- a/gcc/testsuite/gcc.target/riscv/pr110696.c +++ b/gcc/testsuite/gcc.target/riscv/pr110696.c @@ -4,4 +4,4 @@ int foo() { } -/* { dg-final { scan-assembler ".attribute arch, \"rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_v1p0_zicsr2p0_zifencei2p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvl1024b1p0_zvl128b1p0_zvl2048b1p0_zvl256b1p0_zvl32b1p0_zvl4096b1p0_zvl512b1p0_zvl64b1p0\"" } } */ +/* { dg-final { scan-assembler ".attribute arch, \"rv64i2p1_m2p0_a2p1_f2p2_d2p2_c2p0_v1p0_zicsr2p0_zifencei2p0_zaamo1p0_zalrsc1p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvl1024b1p0_zvl128b1p0_zvl2048b1p0_zvl256b1p0_zvl32b1p0_zvl4096b1p0_zvl512b1p0_zvl64b1p0\"" } } */