From: Kito Cheng <kito.cheng@gmail.com>
To: 廖仕华 <shihua@iscas.ac.cn>
Cc: "GCC Patches" <gcc-patches@gcc.gnu.org>,
"Christoph Muellner" <cmuellner@ventanamicro.com>,
史玉龙 <shiyulong@iscas.ac.cn>, jiawei <jiawei@iscas.ac.cn>,
anku.anand@gmail.com
Subject: Re: [PATCH 1/1 V5] RISC-V: Support Zmmul extension
Date: Thu, 21 Jul 2022 17:03:35 +0800 [thread overview]
Message-ID: <CA+yXCZDH_-c_A_oFi+hdZwu44bpqPYqiJxi3d9Zb_CLWxso7pg@mail.gmail.com> (raw)
In-Reply-To: <20220713021326.1235-2-shihua@iscas.ac.cn>
LGTM, will merge once binuils part merge.
On Wed, Jul 13, 2022 at 10:14 AM <shihua@iscas.ac.cn> wrote:
>
> From: LiaoShihua <shihua@iscas.ac.cn>
>
> gcc/ChangeLog:
>
> * common/config/riscv/riscv-common.cc: Add Zmmul.
> * config/riscv/riscv-opts.h (MASK_ZMMUL): New.
> (TARGET_ZMMUL): Ditto.
> * config/riscv/riscv.cc (riscv_option_override):Ditto.
> * config/riscv/riscv.md: Add Zmmul
> * config/riscv/riscv.opt: Ditto.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/zmmul-1.c: New test.
> * gcc.target/riscv/zmmul-2.c: New test.
>
> ---
> gcc/common/config/riscv/riscv-common.cc | 3 +++
> gcc/config/riscv/riscv-opts.h | 3 +++
> gcc/config/riscv/riscv.cc | 8 +++++--
> gcc/config/riscv/riscv.md | 28 ++++++++++++------------
> gcc/config/riscv/riscv.opt | 3 +++
> gcc/testsuite/gcc.target/riscv/zmmul-1.c | 20 +++++++++++++++++
> gcc/testsuite/gcc.target/riscv/zmmul-2.c | 20 +++++++++++++++++
> 7 files changed, 69 insertions(+), 16 deletions(-)
> create mode 100644 gcc/testsuite/gcc.target/riscv/zmmul-1.c
> create mode 100644 gcc/testsuite/gcc.target/riscv/zmmul-2.c
>
> diff --git a/gcc/common/config/riscv/riscv-common.cc b/gcc/common/config/riscv/riscv-common.cc
> index 0e5be2ce105..20acc590b30 100644
> --- a/gcc/common/config/riscv/riscv-common.cc
> +++ b/gcc/common/config/riscv/riscv-common.cc
> @@ -193,6 +193,8 @@ static const struct riscv_ext_version riscv_ext_version_table[] =
> {"zvl32768b", ISA_SPEC_CLASS_NONE, 1, 0},
> {"zvl65536b", ISA_SPEC_CLASS_NONE, 1, 0},
>
> + {"zmmul", ISA_SPEC_CLASS_NONE, 1, 0},
> +
> /* Terminate the list. */
> {NULL, ISA_SPEC_CLASS_NONE, 0, 0}
> };
> @@ -1148,6 +1150,7 @@ static const riscv_ext_flag_table_t riscv_ext_flag_table[] =
> {"zvl32768b", &gcc_options::x_riscv_zvl_flags, MASK_ZVL32768B},
> {"zvl65536b", &gcc_options::x_riscv_zvl_flags, MASK_ZVL65536B},
>
> + {"zmmul", &gcc_options::x_riscv_zm_subext, MASK_ZMMUL},
>
> {NULL, NULL, 0}
> };
> diff --git a/gcc/config/riscv/riscv-opts.h b/gcc/config/riscv/riscv-opts.h
> index 1e153b3a6e7..9c7d69a6ea3 100644
> --- a/gcc/config/riscv/riscv-opts.h
> +++ b/gcc/config/riscv/riscv-opts.h
> @@ -153,6 +153,9 @@ enum stack_protector_guard {
> #define TARGET_ZICBOM ((riscv_zicmo_subext & MASK_ZICBOM) != 0)
> #define TARGET_ZICBOP ((riscv_zicmo_subext & MASK_ZICBOP) != 0)
>
> +#define MASK_ZMMUL (1 << 0)
> +#define TARGET_ZMMUL ((riscv_zm_subext & MASK_ZMMUL) != 0)
> +
> /* Bit of riscv_zvl_flags will set contintuly, N-1 bit will set if N-bit is
> set, e.g. MASK_ZVL64B has set then MASK_ZVL32B is set, so we can use
> popcount to caclulate the minimal VLEN. */
> diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
> index 2e83ca07394..9ad4181f35f 100644
> --- a/gcc/config/riscv/riscv.cc
> +++ b/gcc/config/riscv/riscv.cc
> @@ -4999,10 +4999,14 @@ riscv_option_override (void)
> /* The presence of the M extension implies that division instructions
> are present, so include them unless explicitly disabled. */
> if (TARGET_MUL && (target_flags_explicit & MASK_DIV) == 0)
> - target_flags |= MASK_DIV;
> + if(!TARGET_ZMMUL)
> + target_flags |= MASK_DIV;
> else if (!TARGET_MUL && TARGET_DIV)
> error ("%<-mdiv%> requires %<-march%> to subsume the %<M%> extension");
> -
> +
> + if(TARGET_ZMMUL && !TARGET_MUL && TARGET_DIV)
> + warning (0, "%<-mdiv%> cannot be used when %<ZMMUL%> extension is present");
> +
> /* Likewise floating-point division and square root. */
> if (TARGET_HARD_FLOAT && (target_flags_explicit & MASK_FDIV) == 0)
> target_flags |= MASK_FDIV;
> diff --git a/gcc/config/riscv/riscv.md b/gcc/config/riscv/riscv.md
> index 308b64dd30d..d4e171464ea 100644
> --- a/gcc/config/riscv/riscv.md
> +++ b/gcc/config/riscv/riscv.md
> @@ -763,7 +763,7 @@
> [(set (match_operand:SI 0 "register_operand" "=r")
> (mult:SI (match_operand:SI 1 "register_operand" " r")
> (match_operand:SI 2 "register_operand" " r")))]
> - "TARGET_MUL"
> + "TARGET_ZMMUL || TARGET_MUL"
> { return TARGET_64BIT ? "mulw\t%0,%1,%2" : "mul\t%0,%1,%2"; }
> [(set_attr "type" "imul")
> (set_attr "mode" "SI")])
> @@ -772,7 +772,7 @@
> [(set (match_operand:DI 0 "register_operand" "=r")
> (mult:DI (match_operand:DI 1 "register_operand" " r")
> (match_operand:DI 2 "register_operand" " r")))]
> - "TARGET_MUL && TARGET_64BIT"
> + "TARGET_ZMMUL || TARGET_MUL && TARGET_64BIT"
> "mul\t%0,%1,%2"
> [(set_attr "type" "imul")
> (set_attr "mode" "DI")])
> @@ -782,7 +782,7 @@
> (mult:GPR (match_operand:GPR 1 "register_operand" " r")
> (match_operand:GPR 2 "register_operand" " r")))
> (label_ref (match_operand 3 "" ""))]
> - "TARGET_MUL"
> + "TARGET_ZMMUL || TARGET_MUL"
> {
> if (TARGET_64BIT && <MODE>mode == SImode)
> {
> @@ -827,7 +827,7 @@
> (mult:GPR (match_operand:GPR 1 "register_operand" " r")
> (match_operand:GPR 2 "register_operand" " r")))
> (label_ref (match_operand 3 "" ""))]
> - "TARGET_MUL"
> + "TARGET_ZMMUL || TARGET_MUL"
> {
> if (TARGET_64BIT && <MODE>mode == SImode)
> {
> @@ -873,7 +873,7 @@
> (sign_extend:DI
> (mult:SI (match_operand:SI 1 "register_operand" " r")
> (match_operand:SI 2 "register_operand" " r"))))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> "mulw\t%0,%1,%2"
> [(set_attr "type" "imul")
> (set_attr "mode" "SI")])
> @@ -884,7 +884,7 @@
> (match_operator:SI 3 "subreg_lowpart_operator"
> [(mult:DI (match_operand:DI 1 "register_operand" " r")
> (match_operand:DI 2 "register_operand" " r"))])))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> "mulw\t%0,%1,%2"
> [(set_attr "type" "imul")
> (set_attr "mode" "SI")])
> @@ -902,7 +902,7 @@
> [(set (match_operand:TI 0 "register_operand")
> (mult:TI (any_extend:TI (match_operand:DI 1 "register_operand"))
> (any_extend:TI (match_operand:DI 2 "register_operand"))))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> {
> rtx low = gen_reg_rtx (DImode);
> emit_insn (gen_muldi3 (low, operands[1], operands[2]));
> @@ -924,7 +924,7 @@
> (any_extend:TI
> (match_operand:DI 2 "register_operand" " r")))
> (const_int 64))))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> "mulh<u>\t%0,%1,%2"
> [(set_attr "type" "imul")
> (set_attr "mode" "DI")])
> @@ -933,7 +933,7 @@
> [(set (match_operand:TI 0 "register_operand")
> (mult:TI (zero_extend:TI (match_operand:DI 1 "register_operand"))
> (sign_extend:TI (match_operand:DI 2 "register_operand"))))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> {
> rtx low = gen_reg_rtx (DImode);
> emit_insn (gen_muldi3 (low, operands[1], operands[2]));
> @@ -955,7 +955,7 @@
> (sign_extend:TI
> (match_operand:DI 2 "register_operand" " r")))
> (const_int 64))))]
> - "TARGET_MUL && TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && TARGET_64BIT"
> "mulhsu\t%0,%2,%1"
> [(set_attr "type" "imul")
> (set_attr "mode" "DI")])
> @@ -966,7 +966,7 @@
> (match_operand:SI 1 "register_operand" " r"))
> (any_extend:DI
> (match_operand:SI 2 "register_operand" " r"))))]
> - "TARGET_MUL && !TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && !TARGET_64BIT"
> {
> rtx temp = gen_reg_rtx (SImode);
> emit_insn (gen_mulsi3 (temp, operands[1], operands[2]));
> @@ -985,7 +985,7 @@
> (any_extend:DI
> (match_operand:SI 2 "register_operand" " r")))
> (const_int 32))))]
> - "TARGET_MUL && !TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && !TARGET_64BIT"
> "mulh<u>\t%0,%1,%2"
> [(set_attr "type" "imul")
> (set_attr "mode" "SI")])
> @@ -997,7 +997,7 @@
> (match_operand:SI 1 "register_operand" " r"))
> (sign_extend:DI
> (match_operand:SI 2 "register_operand" " r"))))]
> - "TARGET_MUL && !TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && !TARGET_64BIT"
> {
> rtx temp = gen_reg_rtx (SImode);
> emit_insn (gen_mulsi3 (temp, operands[1], operands[2]));
> @@ -1016,7 +1016,7 @@
> (sign_extend:DI
> (match_operand:SI 2 "register_operand" " r")))
> (const_int 32))))]
> - "TARGET_MUL && !TARGET_64BIT"
> + "(TARGET_ZMMUL || TARGET_MUL) && !TARGET_64BIT"
> "mulhsu\t%0,%2,%1"
> [(set_attr "type" "imul")
> (set_attr "mode" "SI")])
> diff --git a/gcc/config/riscv/riscv.opt b/gcc/config/riscv/riscv.opt
> index 9e9fe6d8ccd..f93521c1e70 100644
> --- a/gcc/config/riscv/riscv.opt
> +++ b/gcc/config/riscv/riscv.opt
> @@ -212,6 +212,9 @@ int riscv_zvl_flags
> TargetVariable
> int riscv_zicmo_subext
>
> +TargetVariable
> +int riscv_zm_subext
> +
> Enum
> Name(isa_spec_class) Type(enum riscv_isa_spec_class)
> Supported ISA specs (for use with the -misa-spec= option):
> diff --git a/gcc/testsuite/gcc.target/riscv/zmmul-1.c b/gcc/testsuite/gcc.target/riscv/zmmul-1.c
> new file mode 100644
> index 00000000000..cdae2cb55df
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/zmmul-1.c
> @@ -0,0 +1,20 @@
> +/* { dg-do compile } */
> +/* { dg-options "-march=rv64iafdc_zmmul -mabi=lp64" } */
> +int foo1(int a, int b)
> +{
> + return a*b;
> +}
> +
> +int foo2(int a, int b)
> +{
> + return a/b;
> +}
> +
> +int foo3(int a, int b)
> +{
> + return a%b;
> +}
> +
> +/* { dg-final { scan-assembler-times "mulw\t" 1 } } */
> +/* { dg-final { scan-assembler-not "div\t" } } */
> +/* { dg-final { scan-assembler-not "rem\t" } } */
> \ No newline at end of file
> diff --git a/gcc/testsuite/gcc.target/riscv/zmmul-2.c b/gcc/testsuite/gcc.target/riscv/zmmul-2.c
> new file mode 100644
> index 00000000000..dc6829da92e
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/zmmul-2.c
> @@ -0,0 +1,20 @@
> +/* { dg-do compile } */
> +/* { dg-options "-march=rv32iafdc_zmmul -mabi=ilp32" } */
> +int foo1(int a, int b)
> +{
> + return a*b;
> +}
> +
> +int foo2(int a, int b)
> +{
> + return a/b;
> +}
> +
> +int foo3(int a, int b)
> +{
> + return a%b;
> +}
> +
> +/* { dg-final { scan-assembler-times "mul\t" 1 } } */
> +/* { dg-final { scan-assembler-not "div\t" } } */
> +/* { dg-final { scan-assembler-not "rem\t" } } */
> \ No newline at end of file
> --
> 2.31.1.windows.1
>
next prev parent reply other threads:[~2022-07-21 9:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-07-13 2:13 [PATCH 0/1 " shihua
2022-07-13 2:13 ` [PATCH 1/1 " shihua
2022-07-21 9:03 ` Kito Cheng [this message]
2022-07-21 18:43 ` Palmer Dabbelt
2022-07-22 0:35 ` Kito Cheng
2022-09-05 13:47 ` Kito Cheng
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