From: Tamar Christina <tamar.christina@arm.com>
To: gcc-patches@gcc.gnu.org
Cc: nd@arm.com, Richard.Earnshaw@arm.com, Marcus.Shawcroft@arm.com,
Kyrylo.Tkachov@arm.com, richard.sandiford@arm.com
Subject: [PATCH]AArch64: remove ls64 from being mandatory on armv8.7-a..
Date: Wed, 14 Feb 2024 15:18:18 +0000 [thread overview]
Message-ID: <patch-18270-tamar@arm.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 5027 bytes --]
Hi All,
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.
Bootstrapped Regtested on aarch64-none-linux-gnu and no issues.
Ok for master? and backport to GCC 13,12,11?
Thanks,
Tamar
gcc/ChangeLog:
* config/aarch64/aarch64-arches.def (AARCH64_ARCH): Remove LS64 from
Armv8.7-a.
gcc/testsuite/ChangeLog:
* g++.target/aarch64/acle/ls64.C: Add +ls64.
* gcc.target/aarch64/acle/pr110100.c: Likewise.
* gcc.target/aarch64/acle/pr110132.c: Likewise.
* gcc.target/aarch64/options_set_28.c: Drop check for nols64.
* gcc.target/aarch64/pragma_cpp_predefs_2.c: Correct header checks.
--- inline copy of patch --
diff --git a/gcc/config/aarch64/aarch64-arches.def b/gcc/config/aarch64/aarch64-arches.def
index b7115ff7c3d4a7ee7abbedcb091ef15a7efacc79..9bec30e9203bac01155281ef3474846c402bb29e 100644
--- a/gcc/config/aarch64/aarch64-arches.def
+++ b/gcc/config/aarch64/aarch64-arches.def
@@ -37,7 +37,7 @@ AARCH64_ARCH("armv8.3-a", generic_armv8_a, V8_3A, 8, (V8_2A, PAUTH, R
AARCH64_ARCH("armv8.4-a", generic_armv8_a, V8_4A, 8, (V8_3A, F16FML, DOTPROD, FLAGM))
AARCH64_ARCH("armv8.5-a", generic_armv8_a, V8_5A, 8, (V8_4A, SB, SSBS, PREDRES))
AARCH64_ARCH("armv8.6-a", generic_armv8_a, V8_6A, 8, (V8_5A, I8MM, BF16))
-AARCH64_ARCH("armv8.7-a", generic_armv8_a, V8_7A, 8, (V8_6A, LS64))
+AARCH64_ARCH("armv8.7-a", generic_armv8_a, V8_7A, 8, (V8_6A))
AARCH64_ARCH("armv8.8-a", generic_armv8_a, V8_8A, 8, (V8_7A, MOPS))
AARCH64_ARCH("armv8.9-a", generic_armv8_a, V8_9A, 8, (V8_8A))
AARCH64_ARCH("armv8-r", generic_armv8_a, V8R , 8, (V8_4A))
diff --git a/gcc/testsuite/g++.target/aarch64/acle/ls64.C b/gcc/testsuite/g++.target/aarch64/acle/ls64.C
index d9002785b578741bde1202761f0881dc3d47e608..dcfe6f1af6711a7f3ec2562f6aabf56baecf417d 100644
--- 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/gcc.target/aarch64/acle/pr110100.c b/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c
index f56d5e619e8ac23cdf720574bd6ee08fbfd36423..62a82b97c56debad092cc8fd1ed48f0219109cd7 100644
--- 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
--- 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/options_set_28.c b/gcc/testsuite/gcc.target/aarch64/options_set_28.c
index 9e63768581e9d429e9408863942051b1b04761ac..d5b15f8bc5831de56fe667179d83d9c853529aaf 100644
--- a/gcc/testsuite/gcc.target/aarch64/options_set_28.c
+++ b/gcc/testsuite/gcc.target/aarch64/options_set_28.c
@@ -1,9 +1,9 @@
/* { dg-do compile } */
-/* { dg-additional-options "-march=armv9.3-a+nopredres+nols64+nomops" } */
+/* { dg-additional-options "-march=armv9.3-a+nopredres+nomops" } */
int main ()
{
return 0;
}
-/* { dg-final { scan-assembler-times {\.arch armv9\.3\-a\+crc\+nopredres\+nols64\+nomops\n} 1 } } */
+/* { dg-final { scan-assembler-times {\.arch armv9\.3\-a\+crc\+nopredres\+nomops\n} 1 } } */
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
--- 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
--
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diff --git a/gcc/config/aarch64/aarch64-arches.def b/gcc/config/aarch64/aarch64-arches.def
index b7115ff7c3d4a7ee7abbedcb091ef15a7efacc79..9bec30e9203bac01155281ef3474846c402bb29e 100644
--- a/gcc/config/aarch64/aarch64-arches.def
+++ b/gcc/config/aarch64/aarch64-arches.def
@@ -37,7 +37,7 @@ AARCH64_ARCH("armv8.3-a", generic_armv8_a, V8_3A, 8, (V8_2A, PAUTH, R
AARCH64_ARCH("armv8.4-a", generic_armv8_a, V8_4A, 8, (V8_3A, F16FML, DOTPROD, FLAGM))
AARCH64_ARCH("armv8.5-a", generic_armv8_a, V8_5A, 8, (V8_4A, SB, SSBS, PREDRES))
AARCH64_ARCH("armv8.6-a", generic_armv8_a, V8_6A, 8, (V8_5A, I8MM, BF16))
-AARCH64_ARCH("armv8.7-a", generic_armv8_a, V8_7A, 8, (V8_6A, LS64))
+AARCH64_ARCH("armv8.7-a", generic_armv8_a, V8_7A, 8, (V8_6A))
AARCH64_ARCH("armv8.8-a", generic_armv8_a, V8_8A, 8, (V8_7A, MOPS))
AARCH64_ARCH("armv8.9-a", generic_armv8_a, V8_9A, 8, (V8_8A))
AARCH64_ARCH("armv8-r", generic_armv8_a, V8R , 8, (V8_4A))
diff --git a/gcc/testsuite/g++.target/aarch64/acle/ls64.C b/gcc/testsuite/g++.target/aarch64/acle/ls64.C
index d9002785b578741bde1202761f0881dc3d47e608..dcfe6f1af6711a7f3ec2562f6aabf56baecf417d 100644
--- 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/gcc.target/aarch64/acle/pr110100.c b/gcc/testsuite/gcc.target/aarch64/acle/pr110100.c
index f56d5e619e8ac23cdf720574bd6ee08fbfd36423..62a82b97c56debad092cc8fd1ed48f0219109cd7 100644
--- 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
--- 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/options_set_28.c b/gcc/testsuite/gcc.target/aarch64/options_set_28.c
index 9e63768581e9d429e9408863942051b1b04761ac..d5b15f8bc5831de56fe667179d83d9c853529aaf 100644
--- a/gcc/testsuite/gcc.target/aarch64/options_set_28.c
+++ b/gcc/testsuite/gcc.target/aarch64/options_set_28.c
@@ -1,9 +1,9 @@
/* { dg-do compile } */
-/* { dg-additional-options "-march=armv9.3-a+nopredres+nols64+nomops" } */
+/* { dg-additional-options "-march=armv9.3-a+nopredres+nomops" } */
int main ()
{
return 0;
}
-/* { dg-final { scan-assembler-times {\.arch armv9\.3\-a\+crc\+nopredres\+nols64\+nomops\n} 1 } } */
+/* { dg-final { scan-assembler-times {\.arch armv9\.3\-a\+crc\+nopredres\+nomops\n} 1 } } */
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
--- 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
next reply other threads:[~2024-02-14 15:18 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-14 15:18 Tamar Christina [this message]
2024-02-15 10:56 ` Tamar Christina
2024-02-20 10:03 ` Richard Sandiford
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