RISC-V: Remove FRM for vfwcvt (RVV float to float widening conversion)
Checks
Commit Message
From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Base on the discussion here:
https://github.com/riscv/riscv-v-spec/issues/884
vfwcvt doesn't depend on FRM. So remove FRM preparing for mode switching support.
gcc/ChangeLog:
* config/riscv/vector.md: Remove FRM.
---
gcc/config/riscv/vector.md | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
Comments
On 5/31/23 04:35, juzhe.zhong@rivai.ai wrote:
> From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> Base on the discussion here:
> https://github.com/riscv/riscv-v-spec/issues/884
>
> vfwcvt doesn't depend on FRM. So remove FRM preparing for mode switching support.
>
> gcc/ChangeLog:
>
> * config/riscv/vector.md: Remove FRM.
OK
jeff
Committed, thanks Jeff.
Pan
-----Original Message-----
From: Gcc-patches <gcc-patches-bounces+pan2.li=intel.com@gcc.gnu.org> On Behalf Of Jeff Law via Gcc-patches
Sent: Wednesday, May 31, 2023 9:03 PM
To: juzhe.zhong@rivai.ai; gcc-patches@gcc.gnu.org
Cc: kito.cheng@gmail.com; kito.cheng@sifive.com; palmer@dabbelt.com; palmer@rivosinc.com; rdapp.gcc@gmail.com
Subject: Re: [PATCH] RISC-V: Remove FRM for vfwcvt (RVV float to float widening conversion)
On 5/31/23 04:35, juzhe.zhong@rivai.ai wrote:
> From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> Base on the discussion here:
> https://github.com/riscv/riscv-v-spec/issues/884
>
> vfwcvt doesn't depend on FRM. So remove FRM preparing for mode switching support.
>
> gcc/ChangeLog:
>
> * config/riscv/vector.md: Remove FRM.
OK
jeff
@@ -7180,10 +7180,8 @@
(match_operand 5 "const_int_operand" " i, i")
(match_operand 6 "const_int_operand" " i, i")
(match_operand 7 "const_int_operand" " i, i")
- (match_operand 8 "const_int_operand" " i, i")
(reg:SI VL_REGNUM)
- (reg:SI VTYPE_REGNUM)
- (reg:SI FRM_REGNUM)] UNSPEC_VPREDICATE)
+ (reg:SI VTYPE_REGNUM)] UNSPEC_VPREDICATE)
(float_extend:VWEXTF
(match_operand:<V_DOUBLE_TRUNC> 3 "register_operand" " vr, vr"))
(match_operand:VWEXTF 2 "vector_merge_operand" " vu, 0")))]