Author: Anton Sidorenko
Date: 2024-06-21T11:40:10+03:00
New Revision: d59a4cac5fe6c05da0e9088aad8f94c207423c36

URL: 
https://github.com/llvm/llvm-project/commit/d59a4cac5fe6c05da0e9088aad8f94c207423c36
DIFF: 
https://github.com/llvm/llvm-project/commit/d59a4cac5fe6c05da0e9088aad8f94c207423c36.diff

LOG: [RISCV] Add Syntacore SCR3 processor definition (#95953)

Syntacore SCR3 is a microcontroller-class processor core. Overview:
https://syntacore.com/products/scr3
This PR introduces two CPUs:
  * 'syntacore-scr3-rv32' which is rv32imc
  * 'syntacore-scr3-rv64' which is rv64imac

---------

Co-authored-by: Dmitrii Petrov <dmitrii.pet...@syntacore.com>

Added: 
    

Modified: 
    clang/test/Driver/riscv-cpus.c
    clang/test/Misc/target-invalid-cpu-note.c
    llvm/docs/ReleaseNotes.rst
    llvm/lib/Target/RISCV/RISCVProcessors.td

Removed: 
    


################################################################################
diff  --git a/clang/test/Driver/riscv-cpus.c b/clang/test/Driver/riscv-cpus.c
index 41c257bc559ed..26bcda6468dd2 100644
--- a/clang/test/Driver/riscv-cpus.c
+++ b/clang/test/Driver/riscv-cpus.c
@@ -358,3 +358,26 @@
 
 // RUN: not %clang --target=riscv32 -### -c %s 2>&1 -mcpu=generic-rv32 
-march=rv64i | FileCheck -check-prefix=MISMATCH-ARCH %s
 // MISMATCH-ARCH: cpu 'generic-rv32' does not support rv64
+
+// RUN: %clang --target=riscv32 -### -c %s 2>&1 -mcpu=syntacore-scr3-rv32 | 
FileCheck -check-prefix=MCPU-SYNTACORE-SCR3-RV32 %s
+// MCPU-SYNTACORE-SCR3-RV32: "-target-cpu" "syntacore-scr3-rv32"
+// MCPU-SYNTACORE-SCR3-RV32-SAME: "-target-feature" "+m"
+// MCPU-SYNTACORE-SCR3-RV32-SAME: "-target-feature" "+c"
+// MCPU-SYNTACORE-SCR3-RV32-SAME: "-target-feature" "+zicsr"
+// MCPU-SYNTACORE-SCR3-RV32-SAME: "-target-feature" "+zifencei"
+// MCPU-SYNTACORE-SCR3-RV32-SAME: "-target-abi" "ilp32"
+
+// RUN: %clang --target=riscv32 -### -c %s 2>&1 -mtune=syntacore-scr3-rv32 | 
FileCheck -check-prefix=MTUNE-SYNTACORE-SCR3-RV32 %s
+// MTUNE-SYNTACORE-SCR3-RV32: "-tune-cpu" "syntacore-scr3-rv32"
+
+// RUN: %clang --target=riscv64 -### -c %s 2>&1 -mcpu=syntacore-scr3-rv64 | 
FileCheck -check-prefix=MCPU-SYNTACORE-SCR3-RV64 %s
+// MCPU-SYNTACORE-SCR3-RV64: "-target-cpu" "syntacore-scr3-rv64"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-feature" "+m"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-feature" "+a"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-feature" "+c"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-feature" "+zicsr"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-feature" "+zifencei"
+// MCPU-SYNTACORE-SCR3-RV64-SAME: "-target-abi" "lp64"
+
+// RUN: %clang --target=riscv64 -### -c %s 2>&1 -mtune=syntacore-scr3-rv64 | 
FileCheck -check-prefix=MTUNE-SYNTACORE-SCR3-RV64 %s
+// MTUNE-SYNTACORE-SCR3-RV64: "-tune-cpu" "syntacore-scr3-rv64"

diff  --git a/clang/test/Misc/target-invalid-cpu-note.c 
b/clang/test/Misc/target-invalid-cpu-note.c
index 59d3aaa122dbe..1a9063ee5a257 100644
--- a/clang/test/Misc/target-invalid-cpu-note.c
+++ b/clang/test/Misc/target-invalid-cpu-note.c
@@ -81,16 +81,16 @@
 
 // RUN: not %clang_cc1 -triple riscv32 -target-cpu not-a-cpu -fsyntax-only %s 
2>&1 | FileCheck %s --check-prefix RISCV32
 // RISCV32: error: unknown target CPU 'not-a-cpu'
-// RISCV32-NEXT: note: valid target CPU values are: generic-rv32, rocket-rv32, 
sifive-e20, sifive-e21, sifive-e24, sifive-e31, sifive-e34, sifive-e76, 
syntacore-scr1-base, syntacore-scr1-max{{$}}
+// RISCV32-NEXT: note: valid target CPU values are: generic-rv32, rocket-rv32, 
sifive-e20, sifive-e21, sifive-e24, sifive-e31, sifive-e34, sifive-e76, 
syntacore-scr1-base, syntacore-scr1-max, syntacore-scr3-rv32{{$}}
 
 // RUN: not %clang_cc1 -triple riscv64 -target-cpu not-a-cpu -fsyntax-only %s 
2>&1 | FileCheck %s --check-prefix RISCV64
 // RISCV64: error: unknown target CPU 'not-a-cpu'
-// RISCV64-NEXT: note: valid target CPU values are: generic-rv64, rocket-rv64, 
sifive-p450, sifive-p670, sifive-s21, sifive-s51, sifive-s54, sifive-s76, 
sifive-u54, sifive-u74, sifive-x280, spacemit-x60, veyron-v1, 
xiangshan-nanhu{{$}}
+// RISCV64-NEXT: note: valid target CPU values are: generic-rv64, rocket-rv64, 
sifive-p450, sifive-p670, sifive-s21, sifive-s51, sifive-s54, sifive-s76, 
sifive-u54, sifive-u74, sifive-x280, spacemit-x60, syntacore-scr3-rv64, 
veyron-v1, xiangshan-nanhu{{$}}
 
 // RUN: not %clang_cc1 -triple riscv32 -tune-cpu not-a-cpu -fsyntax-only %s 
2>&1 | FileCheck %s --check-prefix TUNE-RISCV32
 // TUNE-RISCV32: error: unknown target CPU 'not-a-cpu'
-// TUNE-RISCV32-NEXT: note: valid target CPU values are: generic-rv32, 
rocket-rv32, sifive-e20, sifive-e21, sifive-e24, sifive-e31, sifive-e34, 
sifive-e76, syntacore-scr1-base, syntacore-scr1-max, generic, rocket, 
sifive-7-series{{$}}
+// TUNE-RISCV32-NEXT: note: valid target CPU values are: generic-rv32, 
rocket-rv32, sifive-e20, sifive-e21, sifive-e24, sifive-e31, sifive-e34, 
sifive-e76, syntacore-scr1-base, syntacore-scr1-max, syntacore-scr3-rv32, 
generic, rocket, sifive-7-series{{$}}
 
 // RUN: not %clang_cc1 -triple riscv64 -tune-cpu not-a-cpu -fsyntax-only %s 
2>&1 | FileCheck %s --check-prefix TUNE-RISCV64
 // TUNE-RISCV64: error: unknown target CPU 'not-a-cpu'
-// TUNE-RISCV64-NEXT: note: valid target CPU values are: generic-rv64, 
rocket-rv64, sifive-p450, sifive-p670, sifive-s21, sifive-s51, sifive-s54, 
sifive-s76, sifive-u54, sifive-u74, sifive-x280, spacemit-x60, veyron-v1, 
xiangshan-nanhu, generic, rocket, sifive-7-series{{$}}
+// TUNE-RISCV64-NEXT: note: valid target CPU values are: generic-rv64, 
rocket-rv64, sifive-p450, sifive-p670, sifive-s21, sifive-s51, sifive-s54, 
sifive-s76, sifive-u54, sifive-u74, sifive-x280, spacemit-x60, 
syntacore-scr3-rv64, veyron-v1, xiangshan-nanhu, generic, rocket, 
sifive-7-series{{$}}

diff  --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 61f63c59cbc57..76356dd76f1d2 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -183,6 +183,7 @@ Changes to the RISC-V Backend
 * Zabha is no longer experimental.
 * 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.
 
 Changes to the WebAssembly Backend
 ----------------------------------

diff  --git a/llvm/lib/Target/RISCV/RISCVProcessors.td 
b/llvm/lib/Target/RISCV/RISCVProcessors.td
index 0348b75449836..6d71cb6a41423 100644
--- a/llvm/lib/Target/RISCV/RISCVProcessors.td
+++ b/llvm/lib/Target/RISCV/RISCVProcessors.td
@@ -326,6 +326,27 @@ def SYNTACORE_SCR1_MAX : 
RISCVProcessorModel<"syntacore-scr1-max",
                                               FeatureStdExtC],
                                              [TuneNoDefaultUnroll]>;
 
+def SYNTACORE_SCR3_RV32 : RISCVProcessorModel<"syntacore-scr3-rv32",
+                                              NoSchedModel,
+                                              [Feature32Bit,
+                                               FeatureStdExtI,
+                                               FeatureStdExtZicsr,
+                                               FeatureStdExtZifencei,
+                                               FeatureStdExtM,
+                                               FeatureStdExtC],
+                                              [TuneNoDefaultUnroll, 
FeaturePostRAScheduler]>;
+
+def SYNTACORE_SCR3_RV64 : RISCVProcessorModel<"syntacore-scr3-rv64",
+                                              NoSchedModel,
+                                              [Feature64Bit,
+                                               FeatureStdExtI,
+                                               FeatureStdExtZicsr,
+                                               FeatureStdExtZifencei,
+                                               FeatureStdExtM,
+                                               FeatureStdExtA,
+                                               FeatureStdExtC],
+                                              [TuneNoDefaultUnroll, 
FeaturePostRAScheduler]>;
+
 def VENTANA_VEYRON_V1 : RISCVProcessorModel<"veyron-v1",
                                             NoSchedModel,
                                             [Feature64Bit,


        
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