[AArch64]: remove ls64 from being mandatory on armv8.7-a

The Arm Architectural Reference Manual (Version J.a, section A2.9 on FEAT_LS64)
shows that ls64 is an optional extensions and should not be enabled by default
for Armv8.7-a.

This drops it from the mandatory bits for the architecture and brings GCC inline
with LLVM and the achitecture.

Note that we will not be changing binutils to preserve compatibility with older
released compilers.

gcc/ChangeLog:

	* config/aarch64/aarch64.h (AARCH64_ARCH): Remove LS64 from
	Armv8.7-a.

gcc/testsuite/ChangeLog:

	* g++.target/aarch64/acle/ls64.C: Add +ls64.
	* g++.target/aarch64/acle/ls64_lto.C: Likewise.
	* gcc.target/aarch64/acle/ls64_lto.c: Likewise.
	* gcc.target/aarch64/acle/pr110100.c: Likewise.
	* gcc.target/aarch64/acle/pr110132.c: Likewise.
	* gcc.target/aarch64/pragma_cpp_predefs_2.c: Correct header checks.

diff --git a/gcc/config/aarch64/aarch64.h b/gcc/config/aarch64/aarch64.h
index 01f7751bc783adc2867c4c9ddf85a23ba037c21f..fadcf98b85c1e044e751b62f62b582e728bfbe43 100644 (file)
--- a/gcc/config/aarch64/aarch64.h
+++ b/gcc/config/aarch64/aarch64.h
@@ -268,7 +268,7 @@ extern unsigned aarch64_architecture_version;
   (AARCH64_FL_FOR_ARCH8_5 | AARCH64_FL_V8_6 | AARCH64_FL_FPSIMD \
    | AARCH64_FL_I8MM | AARCH64_FL_BF16)
 #define AARCH64_FL_FOR_ARCH8_7                 \
-  (AARCH64_FL_FOR_ARCH8_6 | AARCH64_FL_V8_7 | AARCH64_FL_LS64)
+  (AARCH64_FL_FOR_ARCH8_6 | AARCH64_FL_V8_7)
 #define AARCH64_FL_FOR_ARCH8_8                 \
   (AARCH64_FL_FOR_ARCH8_7 | AARCH64_FL_V8_8 | AARCH64_FL_MOPS)
 

diff --git a/gcc/testsuite/g++.target/aarch64/acle/ls64.C b/gcc/testsuite/g++.target/aarch64/acle/ls64.C
index d9002785b578741bde1202761f0881dc3d47e608..dcfe6f1af6711a7f3ec2562f6aabf56baecf417d 100644 (file)
--- a/gcc/testsuite/g++.target/aarch64/acle/ls64.C
+++ b/gcc/testsuite/g++.target/aarch64/acle/ls64.C
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-additional-options "-march=armv8.7-a" } */
+/* { dg-additional-options "-march=armv8.7-a+ls64" } */
 #include <arm_acle.h>
 int main()
 {

diff --git a/gcc/testsuite/g++.target/aarch64/acle/ls64_lto.C b/gcc/testsuite/g++.target/aarch64/acle/ls64_lto.C
index 274a4771e1c1d13bcb1a7bdc77c2e499726f024c..0198fe2a1b78627b873bf22e3d8416dbdcc77078 100644 (file)
--- a/gcc/testsuite/g++.target/aarch64/acle/ls64_lto.C
+++ b/gcc/testsuite/g++.target/aarch64/acle/ls64_lto.C
@@ -1,5 +1,5 @@
 /* { dg-do link { target aarch64_asm_ls64_ok } } */
-/* { dg-additional-options "-march=armv8.7-a -flto" } */
+/* { dg-additional-options "-march=armv8.7-a+ls64 -flto" } */
 #include <arm_acle.h>
 int main()
 {

diff --git a/gcc/testsuite/gcc.target/aarch64/acle/ls64_lto.c b/gcc/testsuite/gcc.target/aarch64/acle/ls64_lto.c
index 8b4f24277717675badc39dd145d365f75f5ceb27..0e5ae0b052b50b08d35151f4bc113617c1569bd3 100644 (file)
--- a/gcc/testsuite/gcc.target/aarch64/acle/ls64_lto.c
+++ b/gcc/testsuite/gcc.target/aarch64/acle/ls64_lto.c
@@ -1,5 +1,5 @@
 /* { dg-do link { target aarch64_asm_ls64_ok } } */
-/* { dg-additional-options "-march=armv8.7-a -flto" } */
+/* { dg-additional-options "-march=armv8.7-a+ls64 -flto" } */
 #include <arm_acle.h>
 int main(void)
 {

diff --git a/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c b/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c
index f56d5e619e8ac23cdf720574bd6ee08fbfd36423..62a82b97c56debad092cc8fd1ed48f0219109cd7 100644 (file)
--- a/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c
+++ b/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-march=armv8.7-a -O2" } */
+/* { dg-options "-march=armv8.7-a+ls64 -O2" } */
 #include <arm_acle.h>
 void do_st64b(data512_t data) {
   __arm_st64b((void*)0x10000000, data);

diff --git a/gcc/testsuite/gcc.target/aarch64/acle/pr110132.c b/gcc/testsuite/gcc.target/aarch64/acle/pr110132.c
index fb88d633dd20772fd96e976a400fe52ae0bc3647..423d91b9a99f269d01d07428414ade7cc518c711 100644 (file)
--- a/gcc/testsuite/gcc.target/aarch64/acle/pr110132.c
+++ b/gcc/testsuite/gcc.target/aarch64/acle/pr110132.c
@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-additional-options "-march=armv8.7-a" } */
+/* { dg-additional-options "-march=armv8.7-a+ls64" } */
 
 /* Check that ls64 builtins can be invoked using a preprocesed testcase
    without triggering bogus builtin warnings, see PR110132.

diff --git a/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_2.c b/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_2.c
index 2d76bfc23dfdcd78a74ec0e4845a3bd8d110b010..d8fc86d1557895f91ffe8be2f65d6581abe51568 100644 (file)
--- a/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_2.c
+++ b/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_2.c
@@ -242,8 +242,8 @@
 
 #pragma GCC push_options
 #pragma GCC target ("arch=armv8.7-a")
-#ifndef __ARM_FEATURE_LS64
-#error "__ARM_FEATURE_LS64 is not defined but should be!"
+#ifdef __ARM_FEATURE_LS64
+#error "__ARM_FEATURE_LS64 is defined but should not be!"
 #endif
 #pragma GCC pop_options