https://gcc.gnu.org/g:e68e814d1f4360bac78d9b5f4e0feb6e41a98a27

commit r15-5099-ge68e814d1f4360bac78d9b5f4e0feb6e41a98a27
Author: Richard Sandiford <richard.sandif...@arm.com>
Date:   Mon Nov 11 12:32:21 2024 +0000

    aarch64: Conditionally define __ARM_FEATURE_SVE2p1
    
    Previous patches are supposed to add full support for SVE2.1,
    so this patch advertises that through __ARM_FEATURE_SVE2p1.
    
    pragma_cpp_predefs_3.c had one fewer pop than push.  The final
    test is triple-nested:
    
    - armv8-a (to start with a clean slate, untainted by command-line flags)
    - the maximal SVE set
    - general-regs-only
    
    gcc/
            * config/aarch64/aarch64-c.cc (aarch64_update_cpp_builtins): Handle
            __ARM_FEATURE_SVE2p1.
    
    gcc/testsuite/
            * gcc.target/aarch64/pragma_cpp_predefs_3.c: Add SVE2p1 tests.

Diff:
---
 gcc/config/aarch64/aarch64-c.cc                    |  1 +
 .../gcc.target/aarch64/pragma_cpp_predefs_3.c      | 84 ++++++++++++++++++++++
 2 files changed, 85 insertions(+)

diff --git a/gcc/config/aarch64/aarch64-c.cc b/gcc/config/aarch64/aarch64-c.cc
index f9b9e3793755..d1ae80c0bb3e 100644
--- a/gcc/config/aarch64/aarch64-c.cc
+++ b/gcc/config/aarch64/aarch64-c.cc
@@ -214,6 +214,7 @@ aarch64_update_cpp_builtins (cpp_reader *pfile)
                        "__ARM_FEATURE_SVE2_BITPERM", pfile);
   aarch64_def_or_undef (TARGET_SVE2_SHA3, "__ARM_FEATURE_SVE2_SHA3", pfile);
   aarch64_def_or_undef (TARGET_SVE2_SM4, "__ARM_FEATURE_SVE2_SM4", pfile);
+  aarch64_def_or_undef (TARGET_SVE2p1, "__ARM_FEATURE_SVE2p1", pfile);
 
   aarch64_def_or_undef (TARGET_LSE, "__ARM_FEATURE_ATOMICS", pfile);
   aarch64_def_or_undef (TARGET_AES, "__ARM_FEATURE_AES", pfile);
diff --git a/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_3.c 
b/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_3.c
index 39128528600f..f1f70ed7b5c1 100644
--- a/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_3.c
+++ b/gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_3.c
@@ -28,6 +28,10 @@
 #error "__ARM_FEATURE_SVE2_SM4 is defined but should not be!"
 #endif
 
+#ifdef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is defined but should not be!"
+#endif
+
 #pragma GCC push_options
 #pragma GCC target ("arch=armv8.2-a+sve")
 
@@ -55,6 +59,10 @@
 #error "__ARM_FEATURE_SVE2_SM4 is defined but should not be!"
 #endif
 
+#ifdef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is defined but should not be!"
+#endif
+
 #pragma GCC pop_options
 
 #pragma GCC push_options
@@ -84,6 +92,10 @@
 #error "__ARM_FEATURE_SVE2_SM4 is defined but should not be!"
 #endif
 
+#ifdef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is defined but should not be!"
+#endif
+
 #pragma GCC pop_options
 
 #pragma GCC push_options
@@ -242,6 +254,72 @@
 #error "__ARM_FEATURE_SVE2_SM4 is not defined but should be!"
 #endif
 
+#pragma GCC pop_options
+
+#pragma GCC push_options
+#pragma GCC target ("arch=armv9-a+sve2p1")
+
+#ifndef __ARM_FEATURE_SVE
+#error "__ARM_FEATURE_SVE is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2
+#error "__ARM_FEATURE_SVE2 is not defined but should be!"
+#endif
+
+#ifdef __ARM_FEATURE_SVE2_AES
+#error "__ARM_FEATURE_SVE2_AES is defined but should not be!"
+#endif
+
+#ifdef __ARM_FEATURE_SVE2_BITPERM
+#error "__ARM_FEATURE_SVE2_BITPERM is defined but should not be!"
+#endif
+
+#ifdef __ARM_FEATURE_SVE2_SHA3
+#error "__ARM_FEATURE_SVE2_SHA3 is defined but should not be!"
+#endif
+
+#ifdef __ARM_FEATURE_SVE2_SM4
+#error "__ARM_FEATURE_SVE2_SM4 is defined but should not be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is not defined but should be!"
+#endif
+
+#pragma GCC pop_options
+
+#pragma GCC push_options
+#pragma GCC target 
("arch=armv9-a+sve2-aes+sve2-bitperm+sve2-sha3+sve2-sm4+sve2p1")
+
+#ifndef __ARM_FEATURE_SVE
+#error "__ARM_FEATURE_SVE is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2
+#error "__ARM_FEATURE_SVE2 is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2_AES
+#error "__ARM_FEATURE_SVE2_AES is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2_BITPERM
+#error "__ARM_FEATURE_SVE2_BITPERM is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2_SHA3
+#error "__ARM_FEATURE_SVE2_SHA3 is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2_SM4
+#error "__ARM_FEATURE_SVE2_SM4 is not defined but should be!"
+#endif
+
+#ifndef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is not defined but should be!"
+#endif
+
 #pragma GCC push_options
 #pragma GCC target ("general-regs-only")
 
@@ -269,6 +347,12 @@
 #error "__ARM_FEATURE_SVE2_SM4 is defined but should not be!"
 #endif
 
+#ifdef __ARM_FEATURE_SVE2p1
+#error "__ARM_FEATURE_SVE2p1 is defined but should not be!"
+#endif
+
+#pragma GCC pop_options
+
 #pragma GCC pop_options
 
 #pragma GCC pop_options

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