Committed, thanks Kito and Juzhe.

Pan

From: Kito Cheng <kito.ch...@gmail.com>
Sent: Friday, June 9, 2023 4:11 PM
To: juzhe.zh...@rivai.ai
Cc: Robin Dapp <rdapp....@gmail.com>; gcc-patches <gcc-patches@gcc.gnu.org>; 
jeffreyalaw <jeffreya...@gmail.com>; Li, Pan2 <pan2...@intel.com>; Wang, 
Yanzhang <yanzhang.w...@intel.com>
Subject: Re: [PATCH v1] RISC-V: Fix one warning of frm enum.

Lgtm

juzhe.zh...@rivai.ai<mailto:juzhe.zh...@rivai.ai> 
<juzhe.zh...@rivai.ai<mailto:juzhe.zh...@rivai.ai>>於 2023年6月9日 週五,16:08寫道:
Ok.



juzhe.zh...@rivai.ai<mailto:juzhe.zh...@rivai.ai>

From: pan2.li<http://pan2.li>
Date: 2023-06-09 15:53
To: gcc-patches
CC: juzhe.zhong; rdapp.gcc; jeffreyalaw; pan2.li<http://pan2.li>; 
yanzhang.wang; kito.cheng
Subject: [PATCH v1] RISC-V: Fix one warning of frm enum.
From: Pan Li <pan2...@intel.com<mailto:pan2...@intel.com>>

This patch would like to fix one warning similar as below, and add the
link for where the values comes from.

./gcc/config/riscv/riscv-protos.h:260:13: warning: binary constants are
a C++14 feature or GCC extension
FRM_RNE = 0b000,
          ^~~~~

Signed-off-by: Pan Li <pan2...@intel.com<mailto:pan2...@intel.com>>

gcc/ChangeLog:

* config/riscv/riscv-protos.h (enum frm_field_enum): Adjust
literal to int.
---
gcc/config/riscv/riscv-protos.h | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/gcc/config/riscv/riscv-protos.h b/gcc/config/riscv/riscv-protos.h
index 38e4125424b..66c1f535d60 100644
--- a/gcc/config/riscv/riscv-protos.h
+++ b/gcc/config/riscv/riscv-protos.h
@@ -254,15 +254,18 @@ enum vxrm_field_enum
   VXRM_RDN,
   VXRM_ROD
};
-/* Rounding mode bitfield for floating point FRM.  */
+/* Rounding mode bitfield for floating point FRM.  The value of enum comes
+   from the below link.
+   
https://github.com/riscv/riscv-isa-manual/blob/main/src/f-st-ext.adoc#floating-point-control-and-status-register
+ */
enum frm_field_enum
{
-  FRM_RNE = 0b000,
-  FRM_RTZ = 0b001,
-  FRM_RDN = 0b010,
-  FRM_RUP = 0b011,
-  FRM_RMM = 0b100,
-  FRM_DYN = 0b111
+  FRM_RNE = 0, /* Aka 0b000.  */
+  FRM_RTZ = 1, /* Aka 0b001.  */
+  FRM_RDN = 2, /* Aka 0b010.  */
+  FRM_RUP = 3, /* Aka 0b011.  */
+  FRM_RMM = 4, /* Aka 0b100.  */
+  FRM_DYN = 7, /* Aka 0b111.  */
};
opt_machine_mode vectorize_related_mode (machine_mode, scalar_mode,
--
2.34.1

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