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