PR rtl-optimization/34808

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / configure.host

diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
index b916aba..c994b5e 100644 (file)
--- a/libstdc++-v3/configure.host
+++ b/libstdc++-v3/configure.host
@@ -39,6 +39,9 @@
 #   atomic_word_dir        location of atomic_word.h
 #                          defaults to generic.
 #
+#   atomic_flags           extra flags to pass to use atomic instructions
+#                          defaults to nothing.
+#
 #   cpu_defines_dir        location of cpu_defines.h
 #                          defaults to generic.
 #
@@ -71,6 +74,7 @@
 c_model=c_global
 c_compatibility=no
 atomic_word_dir=cpu/generic
+atomic_flags=""
 atomicity_dir="cpu/generic"
 cpu_defines_dir="cpu/generic"
 try_cpu=generic
@@ -90,6 +94,9 @@ case "${host_cpu}" in
   arm* | xscale | ep9312)
     try_cpu=arm
     ;;
+  crisv32)
+    try_cpu=cris
+    ;;
   i[567]86 | x86_64)
     try_cpu=i486
     ;;
@@ -130,7 +137,8 @@ case "${host_cpu}" in
 esac
 
 
-# Set specific CPU overrides for atomic_word_dir. Most can just use generic.
+# Set specific CPU overrides for atomic_word_dir and atomic_flags. 
+# Most can just use generic.
 # THIS TABLE IS SORTED.  KEEP IT THAT WAY.
 case "${host_cpu}" in
   alpha*)
@@ -142,11 +150,15 @@ case "${host_cpu}" in
   ia64)
     atomic_word_dir=cpu/ia64
     ;;
+  i[4567]86 | x86_64)
+    atomic_flags="-march=native"
+    ;;
   powerpc* | rs6000)
     atomic_word_dir=cpu/powerpc
     ;;
   sparc* | ultrasparc)
     atomic_word_dir=cpu/sparc
+    atomic_flags="-mcpu=v9"
     ;;
 esac