[gcc r12-1198] RISC-V: Enable riscv attributes by default for all riscv targets.

[Jim Wilson <wilson@gcc.gnu.org>]

https://gcc.gnu.org/g:3c70b3ca1ef58f302bf8c16d9e7c7bb8626408bf

commit r12-1198-g3c70b3ca1ef58f302bf8c16d9e7c7bb8626408bf
Author: Jim Wilson <jimw@sifive.com>
Date:   Thu Jun 3 13:50:34 2021 -0700

    RISC-V: Enable riscv attributes by default for all riscv targets.
    
    These were only enabled for embedded elf originally because that was
    the safe option, and linux had no obvious use for them.  But now that
    we have new extensions coming like V that affect process state and ABIs,
    the attributes are expected to be useful for linux, and may be required
    by the psABI.  clang already emits them for all riscv targets.
    
            gcc/
            * config.gcc (riscv*-*-*): If --with-riscv-attribute not used,
            turn it on for all riscv targets.

Diff:
---
 gcc/config.gcc | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/gcc/config.gcc b/gcc/config.gcc
index 92fad8e20ca..6833a6c13d9 100644
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -4605,14 +4605,7 @@ case "${target}" in
 			tm_defines="${tm_defines} TARGET_RISCV_ATTRIBUTE=0"
 			;;
 		""|default)
-			case "${target}" in
-			riscv*-*-elf*)
-				tm_defines="${tm_defines} TARGET_RISCV_ATTRIBUTE=1"
-				;;
-			*)
-				tm_defines="${tm_defines} TARGET_RISCV_ATTRIBUTE=0"
-				;;
-			esac
+			tm_defines="${tm_defines} TARGET_RISCV_ATTRIBUTE=1"
 			;;
 		*)
 			echo "--with-riscv-attribute=${with_riscv_attribute} is not supported.  The argument must begin with yes, no or default." 1>&2