arm: reinstate HAVE_GAS_ARM_EXTENDED_ARCH

The check was removed by accident.

gcc/ChangeLog:

	* config.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Reinstate HAVE_GAS_ARM_EXTENDED_ARCH test.

(cherry picked from commit 36bd6eafb6062f1fb92a994538c6ed017ced670b)

diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp
index 085f67a30fbcab66d650be47a1b34a8e7d725e32..161e5f89be8225d18f63e0e0b7d7a49e0f46f438 100644 (file)
--- a/gcc/ChangeLog.omp
+++ b/gcc/ChangeLog.omp
@@ -1,3 +1,12 @@
+2022-07-05  Tobias Burnus  <tobias@codesourcery.com>
+
+       Backport from mainline:
+       2022-06-06  Andrew Stubbs  <ams@codesourcery.com>
+
+       * config.in: Regenerate.
+       * configure: Regenerate.
+       * configure.ac: Reinstate HAVE_GAS_ARM_EXTENDED_ARCH test.
+
 2022-07-05  Tobias Burnus  <tobias@codesourcery.com>
 
        Backport from mainline:

diff --git a/gcc/config.in b/gcc/config.in
index 6a4f8856c4fb4df7b360d3de9870e494515213db..16bb963b45b7a09c6dafca53cf56b788e923901d 100644 (file)
--- a/gcc/config.in
+++ b/gcc/config.in
@@ -1331,6 +1331,13 @@
 #endif
 
 
+/* Define if your Arm assembler permits context-specific feature extensions.
+   */
+#ifndef USED_FOR_TARGET
+#undef HAVE_GAS_ARM_EXTENDED_ARCH
+#endif
+
+
 /* Define if your assembler supports .balign and .p2align. */
 #ifndef USED_FOR_TARGET
 #undef HAVE_GAS_BALIGN_AND_P2ALIGN

diff --git a/gcc/configure b/gcc/configure
index a00fc057316f2e333faffa38cbe32a813aadf81b..da74f55874c42ca4a0c9a21ff363ae0ce6b8e378 100755 (executable)
--- a/gcc/configure
+++ b/gcc/configure
@@ -29038,6 +29038,44 @@ $as_echo "$gcc_cv_as_version, ok" >&6; }
     ;;
 esac
 
+case "$target" in
+  arm*)
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking assembler for assembler for arm accepts context-specific architecture extensions" >&5
+$as_echo_n "checking assembler for assembler for arm accepts context-specific architecture extensions... " >&6; }
+if ${gcc_cv_as_arm_option_extensions+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  gcc_cv_as_arm_option_extensions=no
+  if test x$gcc_cv_as != x; then
+    $as_echo '.text
+       .thumb
+       .syntax unified
+       vmov.f32 s0, s1' > conftest.s
+    if { ac_try='$gcc_cv_as $gcc_cv_as_flags -march=armv8.1-m.main+mve -o conftest.o conftest.s >&5'
+  { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_try\""; } >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
+  test $ac_status = 0; }; }
+    then
+       gcc_cv_as_arm_option_extensions=yes
+    else
+      echo "configure: failed program was" >&5
+      cat conftest.s >&5
+    fi
+    rm -f conftest.o conftest.s
+  fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gcc_cv_as_arm_option_extensions" >&5
+$as_echo "$gcc_cv_as_arm_option_extensions" >&6; }
+if test $gcc_cv_as_arm_option_extensions = yes; then
+
+$as_echo "#define HAVE_GAS_ARM_EXTENDED_ARCH 1" >>confdefs.h
+
+fi
+
+esac
+
 # ??? Not all targets support dwarf2 debug_line, even within a version
 # of gas.  Moreover, we need to emit a valid instruction to trigger any
 # info to the output file.  So, as supported targets are added to gas 2.11,

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 4cd48b4007174c81554e26d7cc2374aeda59d61a..80bdd8ceef9bc50769ce59e656b95bb9ef257157 100644 (file)
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -5397,6 +5397,19 @@ case "$target" in
     ;;
 esac
 
+case "$target" in
+  arm*)
+    gcc_GAS_CHECK_FEATURE([assembler for arm accepts context-specific architecture extensions],
+      gcc_cv_as_arm_option_extensions,
+      [-march=armv8.1-m.main+mve],
+      [.text
+       .thumb
+       .syntax unified
+       vmov.f32 s0, s1],,
+      [AC_DEFINE(HAVE_GAS_ARM_EXTENDED_ARCH, 1,
+       [Define if your Arm assembler permits context-specific feature extensions.])])
+esac
+
 # ??? Not all targets support dwarf2 debug_line, even within a version
 # of gas.  Moreover, we need to emit a valid instruction to trigger any
 # info to the output file.  So, as supported targets are added to gas 2.11,