[clang] [llvm] [RISCV] Remove experimental from Ztso. (PR #96465)

Yingwei Zheng via cfe-commits cfe-commits at lists.llvm.org
Mon Jun 24 01:49:28 PDT 2024


https://github.com/dtcxzyw created https://github.com/llvm/llvm-project/pull/96465

Ztso 1.0 was ratified in January 2023.
Documentation: https://github.com/riscv/riscv-isa-manual/blob/main/src/ztso-st-ext.adoc


>From 34670ab55ccecb1a2c7d92f809c9cae0df4150c6 Mon Sep 17 00:00:00 2001
From: Yingwei Zheng <dtcxzyw2333 at gmail.com>
Date: Mon, 24 Jun 2024 16:43:04 +0800
Subject: [PATCH] [RISCV] Remove experimental from Ztso.

---
 clang/test/Driver/riscv-arch.c                | 24 ++++++----
 .../test/Preprocessor/riscv-target-features.c | 10 ++--
 llvm/docs/RISCVUsage.rst                      |  4 +-
 llvm/docs/ReleaseNotes.rst                    |  1 +
 llvm/lib/Target/RISCV/RISCVFeatures.td        |  4 +-
 .../CodeGen/RISCV/GlobalISel/atomic-fence.ll  |  4 +-
 llvm/test/CodeGen/RISCV/atomic-cmpxchg.ll     | 10 ++--
 llvm/test/CodeGen/RISCV/atomic-fence.ll       |  4 +-
 llvm/test/CodeGen/RISCV/atomic-load-store.ll  |  8 ++--
 llvm/test/CodeGen/RISCV/atomic-rmw.ll         | 12 ++---
 .../CodeGen/RISCV/atomicrmw-uinc-udec-wrap.ll |  4 +-
 llvm/test/CodeGen/RISCV/attributes.ll         |  4 +-
 llvm/test/CodeGen/RISCV/module-elf-flags.ll   |  2 +-
 llvm/test/MC/RISCV/Ztso.s                     |  4 +-
 llvm/test/MC/RISCV/attribute-arch.s           |  4 +-
 llvm/test/MC/RISCV/elf-flags.s                |  4 +-
 .../TargetParser/RISCVISAInfoTest.cpp         | 46 +++++++++----------
 17 files changed, 77 insertions(+), 72 deletions(-)

diff --git a/clang/test/Driver/riscv-arch.c b/clang/test/Driver/riscv-arch.c
index ffd92e1f398c4..c3c471c4bc396 100644
--- a/clang/test/Driver/riscv-arch.c
+++ b/clang/test/Driver/riscv-arch.c
@@ -365,24 +365,30 @@
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZFHMIN %s
 // RV32-ZFHMIN: "-target-feature" "+zfhmin"
 
-// RUN: not %clang --target=riscv32-unknown-elf -march=rv32iztso -### %s \
+// RUN: not %clang --target=riscv32-unknown-elf -march=rv32izalasr -### %s \
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-EXPERIMENTAL-NOFLAG %s
-// RV32-EXPERIMENTAL-NOFLAG: error: invalid arch name 'rv32iztso'
+// RV32-EXPERIMENTAL-NOFLAG: error: invalid arch name 'rv32izalasr'
 // RV32-EXPERIMENTAL-NOFLAG: requires '-menable-experimental-extensions'
 
-// RUN: not %clang --target=riscv32-unknown-elf -march=rv32iztso -menable-experimental-extensions -### %s \
+// RUN: not %clang --target=riscv32-unknown-elf -march=rv32izalasr -menable-experimental-extensions -### %s \
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-EXPERIMENTAL-NOVERS %s
-// RV32-EXPERIMENTAL-NOVERS: error: invalid arch name 'rv32iztso'
+// RV32-EXPERIMENTAL-NOVERS: error: invalid arch name 'rv32izalasr'
 // RV32-EXPERIMENTAL-NOVERS: experimental extension requires explicit version number
 
-// RUN: not %clang --target=riscv32-unknown-elf -march=rv32iztso0p7 -menable-experimental-extensions -### %s \
+// RUN: not %clang --target=riscv32-unknown-elf -march=rv32izalasr0p7 -menable-experimental-extensions -### %s \
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-EXPERIMENTAL-BADVERS %s
-// RV32-EXPERIMENTAL-BADVERS: error: invalid arch name 'rv32iztso0p7'
-// RV32-EXPERIMENTAL-BADVERS: unsupported version number 0.7 for experimental extension 'ztso' (this compiler supports 0.1)
+// RV32-EXPERIMENTAL-BADVERS: error: invalid arch name 'rv32izalasr0p7'
+// RV32-EXPERIMENTAL-BADVERS: unsupported version number 0.7 for experimental extension 'zalasr' (this compiler supports 0.1)
 
-// RUN: %clang --target=riscv32-unknown-elf -march=rv32iztso0p1 -menable-experimental-extensions -### %s \
+// RUN: %clang --target=riscv32-unknown-elf -march=rv32izalasr0p1 -menable-experimental-extensions -### %s \
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-EXPERIMENTAL-GOODVERS %s
-// RV32-EXPERIMENTAL-GOODVERS: "-target-feature" "+experimental-ztso"
+// RV32-EXPERIMENTAL-GOODVERS: "-target-feature" "+experimental-zalasr"
+
+// RUN: %clang --target=riscv32-unknown-elf -march=rv32iztso1p0 -### %s \
+// RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZTSO %s
+// RUN: %clang --target=riscv32-unknown-elf -march=rv32iztso -### %s \
+// RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZTSO %s
+// RV32-ZTSO: "-target-feature" "+ztso"
 
 // RUN: %clang --target=riscv32-unknown-elf -march=rv32izbb1p0 -### %s \
 // RUN: -fsyntax-only 2>&1 | FileCheck -check-prefix=RV32-ZBB %s
diff --git a/clang/test/Preprocessor/riscv-target-features.c b/clang/test/Preprocessor/riscv-target-features.c
index d7935af532dfa..46a61e3c0afc7 100644
--- a/clang/test/Preprocessor/riscv-target-features.c
+++ b/clang/test/Preprocessor/riscv-target-features.c
@@ -1650,13 +1650,13 @@
 // RUN:   -o - | FileCheck --check-prefix=CHECK-ZICFILP-EXT %s
 // CHECK-ZICFILP-EXT: __riscv_zicfilp 4000{{$}}
 
-// RUN: %clang --target=riscv32-unknown-linux-gnu -menable-experimental-extensions \
-// RUN:   -march=rv32iztso0p1 -E -dM %s \
+// RUN: %clang --target=riscv32-unknown-linux-gnu \
+// RUN:   -march=rv32iztso1p0 -E -dM %s \
 // RUN:   -o - | FileCheck --check-prefix=CHECK-ZTSO-EXT %s
-// RUN: %clang --target=riscv64-unknown-linux-gnu -menable-experimental-extensions \
-// RUN:   -march=rv64iztso0p1 -E -dM %s \
+// RUN: %clang --target=riscv64-unknown-linux-gnu \
+// RUN:   -march=rv64iztso1p0 -E -dM %s \
 // RUN:   -o - | FileCheck --check-prefix=CHECK-ZTSO-EXT %s
-// CHECK-ZTSO-EXT: __riscv_ztso 1000{{$}}
+// CHECK-ZTSO-EXT: __riscv_ztso 1000000{{$}}
 
 // RUN: %clang --target=riscv32 -menable-experimental-extensions \
 // RUN:   -march=rv32ifzvfbfmin1p0 -E -dM %s \
diff --git a/llvm/docs/RISCVUsage.rst b/llvm/docs/RISCVUsage.rst
index 152849a01c37f..8ce841103a5b9 100644
--- a/llvm/docs/RISCVUsage.rst
+++ b/llvm/docs/RISCVUsage.rst
@@ -178,6 +178,7 @@ on support follow.
      ``Zks``           Supported
      ``Zkt``           Supported
      ``Zmmul``         Supported
+     ``Ztso``          Supported
      ``Zvbb``          Assembly Support
      ``Zvbc``          Assembly Support
      ``Zve32x``        (`Partially <#riscv-vlen-32-note>`__) Supported
@@ -277,9 +278,6 @@ The primary goal of experimental support is to assist in the process of ratifica
 ``experimental-zicfilp``, ``experimental-zicfiss``
   LLVM implements the `0.4 draft specification <https://github.com/riscv/riscv-cfi/releases/tag/v0.4.0>`__.
 
-``experimental-ztso``
-  LLVM implements the `v0.1 proposed specification <https://github.com/riscv/riscv-isa-manual/releases/download/draft-20220723-10eea63/riscv-spec.pdf>`__ (see Chapter 25).  The mapping from the C/C++ memory model to Ztso has not yet been ratified in any standards document.  There are multiple possible mappings, and they are *not* mutually ABI compatible.  The mapping LLVM implements is ABI compatible with the default WMO mapping.  This mapping may change and there is *explicitly* no ABI stability offered while the extension remains in experimental status.  User beware.
-
 To use an experimental extension from `clang`, you must add `-menable-experimental-extensions` to the command line, and specify the exact version of the experimental extension you are using.  To use an experimental extension with LLVM's internal developer tools (e.g. `llc`, `llvm-objdump`, `llvm-mc`), you must prefix the extension name with `experimental-`.  Note that you don't need to specify the version with internal tools, and shouldn't include the `experimental-` prefix with `clang`.
 
 Vendor Extensions
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 76356dd76f1d2..2abb0fd956b64 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -184,6 +184,7 @@ Changes to the RISC-V Backend
 * B (the collection of the Zba, Zbb, Zbs extensions) is supported.
 * Added smcdeleg, ssccfg, smcsrind, and sscsrind extensions to -march.
 * ``-mcpu=syntacore-scr3-rv32`` and ``-mcpu=syntacore-scr3-rv64`` were added.
+* Ztso is no longer experimental.
 
 Changes to the WebAssembly Backend
 ----------------------------------
diff --git a/llvm/lib/Target/RISCV/RISCVFeatures.td b/llvm/lib/Target/RISCV/RISCVFeatures.td
index a5e34def81c85..e37b0ada54f49 100644
--- a/llvm/lib/Target/RISCV/RISCVFeatures.td
+++ b/llvm/lib/Target/RISCV/RISCVFeatures.td
@@ -196,8 +196,8 @@ def HasStdExtA : Predicate<"Subtarget->hasStdExtA()">,
                                     "'A' (Atomic Instructions)">;
 
 def FeatureStdExtZtso
-    : RISCVExperimentalExtension<"ztso", 0, 1,
-                                 "'Ztso' (Memory Model - Total Store Order)">;
+    : RISCVExtension<"ztso", 1, 0,
+                     "'Ztso' (Memory Model - Total Store Order)">;
 def HasStdExtZtso : Predicate<"Subtarget->hasStdExtZtso()">,
                     AssemblerPredicate<(all_of FeatureStdExtZtso),
                         "'Ztso' (Memory Model - Total Store Order)">;
diff --git a/llvm/test/CodeGen/RISCV/GlobalISel/atomic-fence.ll b/llvm/test/CodeGen/RISCV/GlobalISel/atomic-fence.ll
index f41a89fc45940..aecc66da21f6c 100644
--- a/llvm/test/CodeGen/RISCV/GlobalISel/atomic-fence.ll
+++ b/llvm/test/CodeGen/RISCV/GlobalISel/atomic-fence.ll
@@ -3,13 +3,13 @@
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -global-isel -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -global-isel -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -global-isel -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,TSO %s
 ; RUN: llc -mtriple=riscv64 -global-isel -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a -global-isel -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -global-isel -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -global-isel -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,TSO %s
 
 define void @fence_acquire() nounwind {
diff --git a/llvm/test/CodeGen/RISCV/atomic-cmpxchg.ll b/llvm/test/CodeGen/RISCV/atomic-cmpxchg.ll
index 341d4c90e638a..e336246b450a4 100644
--- a/llvm/test/CodeGen/RISCV/atomic-cmpxchg.ll
+++ b/llvm/test/CodeGen/RISCV/atomic-cmpxchg.ll
@@ -5,9 +5,9 @@
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-WMO %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-ZACAS,RV32IA-WMO-ZACAS %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-TSO %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso,+zacas -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-ZACAS,RV32IA-TSO-ZACAS %s
 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64I %s
@@ -17,11 +17,11 @@
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZACAS,RV64IA-WMO-ZACAS %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a,+zacas,+zabha -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZABHA,RV64IA-WMO-ZABHA %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-TSO %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+zacas -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZACAS,RV64IA-TSO-ZACAS %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+zacas,+zabha -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+zacas,+zabha -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZABHA,RV64IA-TSO-ZABHA %s
 
 define void @cmpxchg_i8_monotonic_monotonic(ptr %ptr, i8 %cmp, i8 %val) nounwind {
diff --git a/llvm/test/CodeGen/RISCV/atomic-fence.ll b/llvm/test/CodeGen/RISCV/atomic-fence.ll
index 07e0cd066331a..7103345ce7bc2 100644
--- a/llvm/test/CodeGen/RISCV/atomic-fence.ll
+++ b/llvm/test/CodeGen/RISCV/atomic-fence.ll
@@ -3,13 +3,13 @@
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,TSO %s
 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,WMO %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck --check-prefixes=CHECK,TSO %s
 
 define void @fence_acquire() nounwind {
diff --git a/llvm/test/CodeGen/RISCV/atomic-load-store.ll b/llvm/test/CodeGen/RISCV/atomic-load-store.ll
index 2d1fc21cda89b..5bcecbb7bcf83 100644
--- a/llvm/test/CodeGen/RISCV/atomic-load-store.ll
+++ b/llvm/test/CodeGen/RISCV/atomic-load-store.ll
@@ -3,24 +3,24 @@
 ; RUN:   | FileCheck -check-prefix=RV32I %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-WMO %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-TSO %s
 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64I %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-WMO %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-TSO %s
 
 
 ; RUN: llc -mtriple=riscv32 -mattr=+a,+seq-cst-trailing-fence -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-WMO-TRAILING-FENCE %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso,+seq-cst-trailing-fence -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso,+seq-cst-trailing-fence -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-TSO-TRAILING-FENCE %s
 
 ; RUN: llc -mtriple=riscv64 -mattr=+a,+seq-cst-trailing-fence -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-WMO-TRAILING-FENCE %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+seq-cst-trailing-fence -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+seq-cst-trailing-fence -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-TSO-TRAILING-FENCE %s
 
 
diff --git a/llvm/test/CodeGen/RISCV/atomic-rmw.ll b/llvm/test/CodeGen/RISCV/atomic-rmw.ll
index e95846b720097..c7c9c339a8880 100644
--- a/llvm/test/CodeGen/RISCV/atomic-rmw.ll
+++ b/llvm/test/CodeGen/RISCV/atomic-rmw.ll
@@ -3,31 +3,31 @@
 ; RUN:   | FileCheck -check-prefix=RV32I %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-NOZACAS,RV32IA-WMO,RV32IA-WMO-NOZACAS %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-NOZACAS,RV32IA-TSO,RV32IA-TSO-NOZACAS %s
 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64I %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-NOZACAS,RV64IA-WMO,RV64IA-WMO-NOZACAS %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-NOZACAS,RV64IA-TSO,RV64IA-TSO-NOZACAS %s
 
 ; RUN: llc -mtriple=riscv32 -mattr=+a,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-ZACAS,RV32IA-WMO,RV32IA-WMO-ZACAS %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso,+zacas -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV32IA,RV32IA-ZACAS,RV32IA-TSO,RV32IA-TSO-ZACAS %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZACAS,RV64IA-WMO,RV64IA-WMO-ZACAS %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+zacas -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-ZACAS,RV64IA-TSO,RV64IA-TSO-ZACAS %s
 
 ; RUN: llc -mtriple=riscv64 -mattr=+a,+zabha -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-WMO,RV64IA-WMO-ZABHA,RV64IA-WMO-ZABHA-NOZACAS %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+zabha -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+zabha -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-TSO,RV64IA-TSO-ZABHA,RV64IA-TSO-ZABHA-NOZACAS %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a,+zabha,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-WMO,RV64IA-WMO-ZABHA,RV64IA-WMO-ZABHA-ZACAS %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso,+zabha,+zacas -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso,+zabha,+zacas -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefixes=RV64IA,RV64IA-TSO,RV64IA-TSO-ZABHA,RV64IA-TSO-ZABHA-ZACAS %s
 
 define i8 @atomicrmw_xchg_i8_monotonic(ptr %a, i8 %b) nounwind {
diff --git a/llvm/test/CodeGen/RISCV/atomicrmw-uinc-udec-wrap.ll b/llvm/test/CodeGen/RISCV/atomicrmw-uinc-udec-wrap.ll
index a5a2ae79966c3..634ed45044ee2 100644
--- a/llvm/test/CodeGen/RISCV/atomicrmw-uinc-udec-wrap.ll
+++ b/llvm/test/CodeGen/RISCV/atomicrmw-uinc-udec-wrap.ll
@@ -3,13 +3,13 @@
 ; RUN:   | FileCheck -check-prefix=RV32I %s
 ; RUN: llc -mtriple=riscv32 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32IA %s
-; RUN: llc -mtriple=riscv32 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv32 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV32IA %s
 ; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64I %s
 ; RUN: llc -mtriple=riscv64 -mattr=+a -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64IA %s
-; RUN: llc -mtriple=riscv64 -mattr=+a,+experimental-ztso -verify-machineinstrs < %s \
+; RUN: llc -mtriple=riscv64 -mattr=+a,+ztso -verify-machineinstrs < %s \
 ; RUN:   | FileCheck -check-prefix=RV64IA %s
 
 
diff --git a/llvm/test/CodeGen/RISCV/attributes.ll b/llvm/test/CodeGen/RISCV/attributes.ll
index f20f6f7c6f94e..9a3405effb93a 100644
--- a/llvm/test/CodeGen/RISCV/attributes.ll
+++ b/llvm/test/CodeGen/RISCV/attributes.ll
@@ -211,7 +211,7 @@
 ; RUN: llc -mtriple=riscv64 -mattr=+za128rs %s -o - | FileCheck --check-prefixes=CHECK,RV64ZA128RS %s
 ; RUN: llc -mtriple=riscv64 -mattr=+zama16b %s -o - | FileCheck --check-prefixes=CHECK,RV64ZAMA16B %s
 ; RUN: llc -mtriple=riscv64 -mattr=+zawrs %s -o - | FileCheck --check-prefixes=CHECK,RV64ZAWRS %s
-; RUN: llc -mtriple=riscv64 -mattr=+experimental-ztso %s -o - | FileCheck --check-prefixes=CHECK,RV64ZTSO %s
+; RUN: llc -mtriple=riscv64 -mattr=+ztso %s -o - | FileCheck --check-prefixes=CHECK,RV64ZTSO %s
 ; RUN: llc -mtriple=riscv64 -mattr=+zaamo %s -o - | FileCheck --check-prefix=RV64ZAAMO %s
 ; RUN: llc -mtriple=riscv64 -mattr=+zalrsc %s -o - | FileCheck --check-prefix=RV64ZALRSC %s
 ; RUN: llc -mtriple=riscv64 -mattr=+zca %s -o - | FileCheck --check-prefixes=CHECK,RV64ZCA %s
@@ -492,7 +492,7 @@
 ; RV64XTHEADMEMPAIR: .attribute 5, "rv64i2p1_xtheadmempair1p0"
 ; RV64XTHEADSYNC: .attribute 5, "rv64i2p1_xtheadsync1p0"
 ; RV64XTHEADVDOT: .attribute 5, "rv64i2p1_f2p2_d2p2_v1p0_zicsr2p0_zve32f1p0_zve32x1p0_zve64d1p0_zve64f1p0_zve64x1p0_zvl128b1p0_zvl32b1p0_zvl64b1p0_xtheadvdot1p0"
-; RV64ZTSO: .attribute 5, "rv64i2p1_ztso0p1"
+; RV64ZTSO: .attribute 5, "rv64i2p1_ztso1p0"
 ; RV64ZAAMO: .attribute 5, "rv64i2p1_zaamo1p0"
 ; RV64ZALRSC: .attribute 5, "rv64i2p1_zalrsc1p0"
 ; RV64ZCA: .attribute 5, "rv64i2p1_zca1p0"
diff --git a/llvm/test/CodeGen/RISCV/module-elf-flags.ll b/llvm/test/CodeGen/RISCV/module-elf-flags.ll
index 1b4bc9fd5466c..b260284b22c0e 100644
--- a/llvm/test/CodeGen/RISCV/module-elf-flags.ll
+++ b/llvm/test/CodeGen/RISCV/module-elf-flags.ll
@@ -10,4 +10,4 @@ define i32 @addi(i32 %a) {
 !llvm.module.flags = !{!0}
 
 !0 = !{i32 6, !"riscv-isa", !1}
-!1 = !{!"rv64i2p1_c2p0_ztso0p1"}
+!1 = !{!"rv64i2p1_c2p0_ztso1p0"}
diff --git a/llvm/test/MC/RISCV/Ztso.s b/llvm/test/MC/RISCV/Ztso.s
index fb4f08efe51e3..06b1030fca7ef 100644
--- a/llvm/test/MC/RISCV/Ztso.s
+++ b/llvm/test/MC/RISCV/Ztso.s
@@ -1,5 +1,5 @@
-# RUN: llvm-mc %s -triple=riscv64 -mattr=+experimental-ztso -riscv-no-aliases 2>&1 | FileCheck %s
-# RUN: llvm-mc %s -triple=riscv32 -mattr=+experimental-ztso -riscv-no-aliases 2>&1 | FileCheck %s
+# RUN: llvm-mc %s -triple=riscv64 -mattr=+ztso -riscv-no-aliases 2>&1 | FileCheck %s
+# RUN: llvm-mc %s -triple=riscv32 -mattr=+ztso -riscv-no-aliases 2>&1 | FileCheck %s
 
 # Note: Ztso doesn't add or remove any instructions, so this is basically
 # just checking that a) we accepted the attribute name, and b) codegen did
diff --git a/llvm/test/MC/RISCV/attribute-arch.s b/llvm/test/MC/RISCV/attribute-arch.s
index e8029ba71cb69..423ab9b19ece0 100644
--- a/llvm/test/MC/RISCV/attribute-arch.s
+++ b/llvm/test/MC/RISCV/attribute-arch.s
@@ -276,8 +276,8 @@
 .attribute arch, "rv32izawrs1p0"
 # CHECK: attribute      5, "rv32i2p1_zawrs1p0"
 
-.attribute arch, "rv32iztso0p1"
-# CHECK: attribute      5, "rv32i2p1_ztso0p1"
+.attribute arch, "rv32iztso1p0"
+# CHECK: attribute      5, "rv32i2p1_ztso1p0"
 
 .attribute arch, "rv32izicsr2p0"
 # CHECK: attribute      5, "rv32i2p1_zicsr2p0"
diff --git a/llvm/test/MC/RISCV/elf-flags.s b/llvm/test/MC/RISCV/elf-flags.s
index ee59e068e2289..c1d9d00c08894 100644
--- a/llvm/test/MC/RISCV/elf-flags.s
+++ b/llvm/test/MC/RISCV/elf-flags.s
@@ -10,8 +10,8 @@
 # RUN: llvm-mc -triple=riscv64 -mattr=+e -filetype=obj < %s \
 # RUN:   | llvm-readobj --file-headers - \
 # RUN:   | FileCheck -check-prefix=CHECK-RVE %s
-# RUN: llvm-mc -triple=riscv32 -mattr=+experimental-ztso -filetype=obj < %s | llvm-readobj --file-headers - | FileCheck -check-prefixes=CHECK-TSO %s
-# RUN: llvm-mc -triple=riscv64 -mattr=+experimental-ztso -filetype=obj < %s | llvm-readobj --file-headers - | FileCheck -check-prefixes=CHECK-TSO %s
+# RUN: llvm-mc -triple=riscv32 -mattr=+ztso -filetype=obj < %s | llvm-readobj --file-headers - | FileCheck -check-prefixes=CHECK-TSO %s
+# RUN: llvm-mc -triple=riscv64 -mattr=+ztso -filetype=obj < %s | llvm-readobj --file-headers - | FileCheck -check-prefixes=CHECK-TSO %s
 
 # CHECK-RVI:       Flags [ (0x0)
 # CHECK-RVI-NEXT:  ]
diff --git a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
index 60bbf01c6276b..e69723dfd975d 100644
--- a/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
+++ b/llvm/unittests/TargetParser/RISCVISAInfoTest.cpp
@@ -554,50 +554,52 @@ TEST(ParseArchString, RejectsDuplicateExtensionNames) {
 TEST(ParseArchString,
      RejectsExperimentalExtensionsIfNotEnableExperimentalExtension) {
   EXPECT_EQ(
-      toString(RISCVISAInfo::parseArchString("rv64iztso", false).takeError()),
+      toString(
+          RISCVISAInfo::parseArchString("rv64izfbfmin", false).takeError()),
       "requires '-menable-experimental-extensions' for experimental extension "
-      "'ztso'");
+      "'zfbfmin'");
 }
 
 TEST(ParseArchString,
      AcceptsExperimentalExtensionsIfEnableExperimentalExtension) {
-  // Note: If ztso becomes none-experimental, this test will need
+  // Note: If zalasr becomes none-experimental, this test will need
   // updating (and unfortunately, it will still pass). The failure of
   // RejectsExperimentalExtensionsIfNotEnableExperimentalExtension will
   // hopefully serve as a reminder to update.
-  auto MaybeISAInfo = RISCVISAInfo::parseArchString("rv64iztso", true, false);
+  auto MaybeISAInfo = RISCVISAInfo::parseArchString("rv64izalasr", true, false);
   ASSERT_THAT_EXPECTED(MaybeISAInfo, Succeeded());
   const auto &Exts = (*MaybeISAInfo)->getExtensions();
   EXPECT_EQ(Exts.size(), 2UL);
-  EXPECT_EQ(Exts.count("ztso"), 1U);
-  auto MaybeISAInfo2 = RISCVISAInfo::parseArchString("rv64iztso0p1", true);
+  EXPECT_EQ(Exts.count("zalasr"), 1U);
+  auto MaybeISAInfo2 = RISCVISAInfo::parseArchString("rv64izalasr0p1", true);
   ASSERT_THAT_EXPECTED(MaybeISAInfo2, Succeeded());
   const auto &Exts2 = (*MaybeISAInfo2)->getExtensions();
   EXPECT_EQ(Exts2.size(), 2UL);
-  EXPECT_EQ(Exts2.count("ztso"), 1U);
+  EXPECT_EQ(Exts2.count("zalasr"), 1U);
 }
 
 TEST(ParseArchString,
      RequiresExplicitVersionNumberForExperimentalExtensionByDefault) {
   EXPECT_EQ(
-      toString(RISCVISAInfo::parseArchString("rv64iztso", true).takeError()),
-      "experimental extension requires explicit version number `ztso`");
+      toString(RISCVISAInfo::parseArchString("rv64izalasr", true).takeError()),
+      "experimental extension requires explicit version number `zalasr`");
 }
 
 TEST(ParseArchString,
      AcceptsUnrecognizedVersionIfNotExperimentalExtensionVersionCheck) {
   auto MaybeISAInfo =
-      RISCVISAInfo::parseArchString("rv64iztso9p9", true, false);
+      RISCVISAInfo::parseArchString("rv64izalasr9p9", true, false);
   ASSERT_THAT_EXPECTED(MaybeISAInfo, Succeeded());
   const auto &Exts = (*MaybeISAInfo)->getExtensions();
   EXPECT_EQ(Exts.size(), 2UL);
-  EXPECT_TRUE(Exts.at("ztso") == (RISCVISAUtils::ExtensionVersion{9, 9}));
+  EXPECT_TRUE(Exts.at("zalasr") == (RISCVISAUtils::ExtensionVersion{9, 9}));
 }
 
 TEST(ParseArchString, RejectsUnrecognizedVersionForExperimentalExtension) {
   EXPECT_EQ(
-      toString(RISCVISAInfo::parseArchString("rv64iztso9p9", true).takeError()),
-      "unsupported version number 9.9 for experimental extension 'ztso' "
+      toString(
+          RISCVISAInfo::parseArchString("rv64izalasr9p9", true).takeError()),
+      "unsupported version number 9.9 for experimental extension 'zalasr' "
       "(this compiler supports 0.1)");
 }
 
@@ -739,16 +741,16 @@ TEST(ParseArchString,
 
 TEST(ToFeatures, IIsDroppedAndExperimentalExtensionsArePrefixed) {
   auto MaybeISAInfo1 =
-      RISCVISAInfo::parseArchString("rv64im_ztso", true, false);
+      RISCVISAInfo::parseArchString("rv64im_zalasr", true, false);
   ASSERT_THAT_EXPECTED(MaybeISAInfo1, Succeeded());
   EXPECT_THAT((*MaybeISAInfo1)->toFeatures(),
-              ElementsAre("+m", "+zmmul", "+experimental-ztso"));
+              ElementsAre("+m", "+zmmul", "+experimental-zalasr"));
 
-  auto MaybeISAInfo2 =
-      RISCVISAInfo::parseArchString("rv32e_ztso_xventanacondops", true, false);
+  auto MaybeISAInfo2 = RISCVISAInfo::parseArchString(
+      "rv32e_zalasr_xventanacondops", true, false);
   ASSERT_THAT_EXPECTED(MaybeISAInfo2, Succeeded());
   EXPECT_THAT((*MaybeISAInfo2)->toFeatures(),
-              ElementsAre("+e", "+experimental-ztso", "+xventanacondops"));
+              ElementsAre("+e", "+experimental-zalasr", "+xventanacondops"));
 }
 
 TEST(ToFeatures, UnsupportedExtensionsAreDropped) {
@@ -893,10 +895,8 @@ TEST(isSupportedExtensionWithVersion, AcceptsSingleExtensionWithVersion) {
 
 TEST(getTargetFeatureForExtension, RetrieveTargetFeatureFromOneExt) {
   EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zbb"), "zbb");
-  EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("ztso0p1"),
-            "experimental-ztso");
-  EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("ztso"),
-            "experimental-ztso");
+  EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("ztso1p0"), "ztso");
+  EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("ztso"), "ztso");
   EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zihintntl1234p4321"),
             "");
   EXPECT_EQ(RISCVISAInfo::getTargetFeatureForExtension("zfoo"), "");
@@ -975,6 +975,7 @@ R"(All available -march extensions for RISC-V
     zksed                1.0
     zksh                 1.0
     zkt                  1.0
+    ztso                 1.0
     zvbb                 1.0
     zvbc                 1.0
     zve32f               1.0
@@ -1074,7 +1075,6 @@ Experimental extensions
     zicfiss              0.4
     zalasr               0.1
     zfbfmin              1.0
-    ztso                 0.1
     zvfbfmin             1.0
     zvfbfwma             1.0
     smmpm                0.8



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