build-compiler-rt: Build all runtimes for aarch64 and armv7 too

Asan can be built, but doesn't work, so omit it from the install.

Thus, in practice, this builds the ubsan and profile runtimes for
aarch64 and armv7.

build-compiler-rt.sh

@@ -93,17 +93,6 @@ fi
 
 
 for arch in $ARCHS; do
-    if [ -n "$SANITIZERS" ]; then
-        case $arch in
-        i686|x86_64)
-            # Sanitizers on windows only support x86.
-            ;;
-        *)
-            continue
-            ;;
-        esac
-    fi
-
     [ -z "$CLEAN" ] || rm -rf build-$arch$BUILD_SUFFIX
     mkdir -p build-$arch$BUILD_SUFFIX
     cd build-$arch$BUILD_SUFFIX
@@ -136,19 +125,24 @@ for arch in $ARCHS; do
     cmake --install . --prefix "$INSTALL_PREFIX"
     mkdir -p "$PREFIX/$arch-w64-mingw32/bin"
     if [ -n "$SANITIZERS" ]; then
-        mv "$INSTALL_PREFIX/lib/windows/"*.dll "$PREFIX/$arch-w64-mingw32/bin"
+        case $arch in
+        aarch64)
+            # asan doesn't work on aarch64 or armv7; make this clear by omitting
+            # the installed files altogether.
+            rm "$INSTALL_PREFIX/lib/windows/libclang_rt.asan"*aarch64*
+            ;;
+        armv7)
+            rm "$INSTALL_PREFIX/lib/windows/libclang_rt.asan"*arm*
+            ;;
+        *)
+            mv "$INSTALL_PREFIX/lib/windows/"*.dll "$PREFIX/$arch-w64-mingw32/bin"
+            ;;
+        esac
     fi
-    INSTALLED=1
     cd ..
 done
 
 if [ "$INSTALL_PREFIX" != "$CLANG_RESOURCE_DIR" ]; then
-    if [ -z "$INSTALLED" ]; then
-        # Don't try to move the installed files in place, if nothing was
-        # installed (e.g. if building with --build-sanitizers but not for x86).
-        exit 0
-    fi
-
     # symlink to system headers - skip copy
     rm -rf "$INSTALL_PREFIX/include"