[clang] [X86][AVX10] Disable m[no-]avx10.1 and switch m[no-]avx10.2 to alias of 512 bit options (PR #124511)

Phoebe Wang via cfe-commits cfe-commits at lists.llvm.org
Sun Jan 26 22:33:54 PST 2025 

https://github.com/phoebewang updated https://github.com/llvm/llvm-project/pull/124511

>From 806ed62f5c856ad15e5290da3b3b84ddcf9083d3 Mon Sep 17 00:00:00 2001
From: "Wang, Phoebe" <phoebe.wang at intel.com>
Date: Mon, 27 Jan 2025 14:13:22 +0800
Subject: [PATCH] [X86][AVX10] Disable m[no-]avx10.1 and switch m[no-]avx10.2
 to alias of 512
MIME-Version: 1.0
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Per the feedback we got, we’d like to switch m[no-]avx10.2 to alias of
512 bit options and disable m[no-]avx10.1 due to they were alias of 256
bit options.

We also change -mno-avx10.[1,2]-512 to alias of 256 bit options to disable
both 256 and 512 instructions.
---
 clang/docs/ReleaseNotes.rst                   |  4 ++++
 clang/include/clang/Driver/Options.td         | 10 +++++-----
 clang/test/Driver/x86-target-features.c       | 14 ++++++++------
 clang/test/Preprocessor/x86_target_features.c |  3 +--
 4 files changed, 18 insertions(+), 13 deletions(-)

diff --git a/clang/docs/ReleaseNotes.rst b/clang/docs/ReleaseNotes.rst
index b63bd366cfe884..c9d84a34b9d44f 100644
--- a/clang/docs/ReleaseNotes.rst
+++ b/clang/docs/ReleaseNotes.rst
@@ -1117,6 +1117,10 @@ X86 Support
 - Support ISA of ``MOVRS``.
 
 - Supported ``-march/tune=diamondrapids``
+- Disable ``-m[no-]avx10.1`` and switch ``-m[no-]avx10.2`` to alias of 512 bit
+  options.
+- Change ``-mno-avx10.1-512`` to alias of ``-mno-avx10.1-256`` to disable both
+  256 and 512 bit instructions.
 
 Arm and AArch64 Support
 ^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
index c5b7fcb7c7f09b..c55e242d47dbfd 100644
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -6424,14 +6424,14 @@ def mno_avx : Flag<["-"], "mno-avx">, Group<m_x86_Features_Group>;
 def mavx10_1_256 : Flag<["-"], "mavx10.1-256">, Group<m_x86_AVX10_Features_Group>;
 def mno_avx10_1_256 : Flag<["-"], "mno-avx10.1-256">, Group<m_x86_AVX10_Features_Group>;
 def mavx10_1_512 : Flag<["-"], "mavx10.1-512">, Group<m_x86_AVX10_Features_Group>;
-def mno_avx10_1_512 : Flag<["-"], "mno-avx10.1-512">, Group<m_x86_AVX10_Features_Group>;
-def mavx10_1 : Flag<["-"], "mavx10.1">, Alias<mavx10_1_256>;
-def mno_avx10_1 : Flag<["-"], "mno-avx10.1">, Alias<mno_avx10_1_256>;
+def mno_avx10_1_512 : Flag<["-"], "mno-avx10.1-512">, Alias<mno_avx10_1_256>;
+def mavx10_1 : Flag<["-"], "mavx10.1">, Flags<[Unsupported]>;
+def mno_avx10_1 : Flag<["-"], "mno-avx10.1">, Flags<[Unsupported]>;
 def mavx10_2_256 : Flag<["-"], "mavx10.2-256">, Group<m_x86_AVX10_Features_Group>;
 def mno_avx10_2_256 : Flag<["-"], "mno-avx10.2-256">, Group<m_x86_AVX10_Features_Group>;
 def mavx10_2_512 : Flag<["-"], "mavx10.2-512">, Group<m_x86_AVX10_Features_Group>;
-def mno_avx10_2_512 : Flag<["-"], "mno-avx10.2-512">, Group<m_x86_AVX10_Features_Group>;
-def mavx10_2 : Flag<["-"], "mavx10.2">, Alias<mavx10_2_256>;
+def mno_avx10_2_512 : Flag<["-"], "mno-avx10.2-512">, Alias<mno_avx10_2_256>;
+def mavx10_2 : Flag<["-"], "mavx10.2">, Alias<mavx10_2_512>;
 def mno_avx10_2 : Flag<["-"], "mno-avx10.2">, Alias<mno_avx10_2_256>;
 def mavx2 : Flag<["-"], "mavx2">, Group<m_x86_Features_Group>;
 def mno_avx2 : Flag<["-"], "mno-avx2">, Group<m_x86_Features_Group>;
diff --git a/clang/test/Driver/x86-target-features.c b/clang/test/Driver/x86-target-features.c
index 339f593dc760a8..8498416fe7ead7 100644
--- a/clang/test/Driver/x86-target-features.c
+++ b/clang/test/Driver/x86-target-features.c
@@ -395,7 +395,8 @@
 // EVEX512: "-target-feature" "+evex512"
 // NO-EVEX512: "-target-feature" "-evex512"
 
-// RUN: %clang --target=i386 -mavx10.1 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_1_256 %s
+// RUN: not %clang --target=i386 -march=i386 -mavx10.1 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=UNSUPPORT-AVX10 %s
+// RUN: not %clang --target=i386 -march=i386 -mno-avx10.1 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=UNSUPPORT-AVX10 %s
 // RUN: %clang --target=i386 -mavx10.1-256 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_1_256 %s
 // RUN: %clang --target=i386 -mavx10.1-512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_1_512 %s
 // RUN: %clang --target=i386 -mavx10.1-256 -mavx10.1-512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_1_512 %s
@@ -403,15 +404,16 @@
 // RUN: not %clang --target=i386 -march=i386 -mavx10.1-128 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=BAD-AVX10 %s
 // RUN: not %clang --target=i386 -march=i386 -mavx10.a-256 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=BAD-AVX10 %s
 // RUN: not %clang --target=i386 -march=i386 -mavx10.1024-512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=BAD-AVX10 %s
-// RUN: %clang --target=i386 -march=i386 -mavx10.1 -mavx512f %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-AVX512 %s
-// RUN: %clang --target=i386 -march=i386 -mavx10.1 -mno-avx512f %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-AVX512 %s
-// RUN: %clang --target=i386 -march=i386 -mavx10.1 -mevex512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-EVEX512 %s
-// RUN: %clang --target=i386 -march=i386 -mavx10.1 -mno-evex512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-EVEX512 %s
-// RUN: %clang --target=i386 -mavx10.2 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_2_256 %s
+// RUN: %clang --target=i386 -march=i386 -mavx10.1-256 -mavx512f %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-AVX512 %s
+// RUN: %clang --target=i386 -march=i386 -mavx10.1-256 -mno-avx512f %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-AVX512 %s
+// RUN: %clang --target=i386 -march=i386 -mavx10.1-256 -mevex512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-EVEX512 %s
+// RUN: %clang --target=i386 -march=i386 -mavx10.1-256 -mno-evex512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10-EVEX512 %s
+// RUN: %clang --target=i386 -mavx10.2 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_2_512 %s
 // RUN: %clang --target=i386 -mavx10.2-256 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_2_256 %s
 // RUN: %clang --target=i386 -mavx10.2-512 %s -### -o %t.o 2>&1 | FileCheck -check-prefix=AVX10_2_512 %s
 // RUN: %clang --target=i386 -mavx10.2-256 -mavx10.1-512 %s -### -o %t.o 2>&1 | FileCheck -check-prefixes=AVX10_2_256,AVX10_1_512 %s
 // RUN: %clang --target=i386 -mavx10.2-512 -mavx10.1-256 %s -### -o %t.o 2>&1 | FileCheck -check-prefixes=AVX10_2_512,AVX10_1_256 %s
+// UNSUPPORT-AVX10: error: unsupported option '-m{{.*}}avx10.1' for target 'i386'
 // AVX10_2_256: "-target-feature" "+avx10.2-256"
 // AVX10_2_512: "-target-feature" "+avx10.2-512"
 // AVX10_1_256: "-target-feature" "+avx10.1-256"
diff --git a/clang/test/Preprocessor/x86_target_features.c b/clang/test/Preprocessor/x86_target_features.c
index fa3d0038f05a93..63222a882ff531 100644
--- a/clang/test/Preprocessor/x86_target_features.c
+++ b/clang/test/Preprocessor/x86_target_features.c
@@ -742,10 +742,8 @@
 // AVXVNNIINT16NOAVX2-NOT: #define __AVX2__ 1
 // AVXVNNIINT16NOAVX2-NOT: #define __AVXVNNIINT16__ 1
 
-// RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1 -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_256 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1-256 -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_256 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1-256 -mno-avx512f -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_256 %s
-// RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.2 -x c -E -dM -o - %s | FileCheck  -check-prefixes=AVX10_1_256,AVX10_2_256 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.2-256 -x c -E -dM -o - %s | FileCheck  -check-prefixes=AVX10_1_256,AVX10_2_256 %s
 // AVX10_1_256-NOT: __AVX10_1_512__
 // AVX10_1_256: #define __AVX10_1__ 1
@@ -758,6 +756,7 @@
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1-512 -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_512 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1-512 -mno-avx512f -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_512 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.1-512 -mno-evex512 -x c -E -dM -o - %s | FileCheck  -check-prefix=AVX10_1_512 %s
+// RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.2 -x c -E -dM -o - %s | FileCheck  -check-prefixes=AVX10_1_512,AVX10_2_512 %s
 // RUN: %clang -target i686-unknown-linux-gnu -march=atom -mavx10.2-512 -x c -E -dM -o - %s | FileCheck  -check-prefixes=AVX10_1_512,AVX10_2_512 %s
 // AVX10_1_512: #define __AVX10_1_512__ 1
 // AVX10_1_512: #define __AVX10_1__ 1

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