On Tue, May 22, 2018 at 03:21:30PM -0600, Jeff Law wrote:
> On 05/21/2018 03:46 PM, Segher Boessenkool wrote:
> > This patch creates "be" and "le" selectors, which can be used by all
> > architectures, similar to ilp32 and lp64.
>
> I think this is fine. "be" "le" are used all over the place in gcc and
> the kernel to denote big/little endian.
Thanks. This is what I checked in (to trunk):
2017-05-23 Segher Boessenkool <seg...@kernel.crashing.org>
* doc/sourcebuild.texi (Endianness): New subsubsection.
gcc/testsuite/
* lib/target-supports.exp (check_effective_target_be): New.
(check_effective_target_le): New.
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index dfb0578..596007d 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1313,6 +1313,16 @@ By convention, keywords ending in @code{_nocache} can
also include options
specified for the particular test in an earlier @code{dg-options} or
@code{dg-add-options} directive.
+@subsubsection Endianness
+
+@table @code
+@item be
+Target uses big-endian memory order for multi-byte and multi-word data.
+
+@item le
+Target uses little-endian memory order for multi-byte and multi-word data.
+@end table
+
@subsubsection Data type sizes
@table @code
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index aa1296e6..0a53d7b 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -2523,6 +2523,22 @@ proc check_effective_target_next_runtime { } {
}]
}
+# Return 1 if we're generating code for big-endian memory order.
+
+proc check_effective_target_be { } {
+ return [check_no_compiler_messages be object {
+ int dummy[__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ ? 1 : -1];
+ }]
+}
+
+# Return 1 if we're generating code for little-endian memory order.
+
+proc check_effective_target_le { } {
+ return [check_no_compiler_messages le object {
+ int dummy[__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ ? 1 : -1];
+ }]
+}
+
# Return 1 if we're generating 32-bit code using default options, 0
# otherwise.
--
1.8.3.1
