[clang] [llvm] [RISCV] Add Syntacore SCR7 processor definition (PR #108406)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-risc-v

Author: Anton Sidorenko (asi-sc)

<details>
<summary>Changes</summary>

Syntacore SCR7 is a high-performance Linux-capable RISC-V processor core.
The core has rv64imafdcv_zba_zbb_zbc_zbs_zkn march.
Overview: https://syntacore.com/products/scr7

Scheduling model will be added in a subsequent PR.

---
Full diff: https://github.com/llvm/llvm-project/pull/108406.diff


4 Files Affected:

- (modified) clang/test/Driver/riscv-cpus.c (+25) 
- (modified) clang/test/Misc/target-invalid-cpu-note/riscv.c (+2) 
- (modified) llvm/docs/ReleaseNotes.rst (+1) 
- (modified) llvm/lib/Target/RISCV/RISCVProcessors.td (+19) 


``````````diff
diff --git a/clang/test/Driver/riscv-cpus.c b/clang/test/Driver/riscv-cpus.c
index 481eaae9153e86..79256e402c0b74 100644
--- a/clang/test/Driver/riscv-cpus.c
+++ b/clang/test/Driver/riscv-cpus.c
@@ -502,3 +502,28 @@
 
 // RUN: %clang --target=riscv64 -### -c %s 2>&1 -mtune=syntacore-scr5-rv64 | FileCheck -check-prefix=MTUNE-SYNTACORE-SCR5-RV64 %s
 // MTUNE-SYNTACORE-SCR5-RV64: "-tune-cpu" "syntacore-scr5-rv64"
+
+// RUN: %clang --target=riscv64 -### -c %s 2>&1 -mcpu=syntacore-scr7 | FileCheck -check-prefix=MCPU-SYNTACORE-SCR7 %s
+// MCPU-SYNTACORE-SCR7: "-target-cpu" "syntacore-scr7"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+m"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+a"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+f"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+d"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+c"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zicsr"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zifencei"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zba"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbb"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbc"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbkb"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbkc"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbkx"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zbs"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zkn"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zknd"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zkne"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-feature" "+zknh"
+// MCPU-SYNTACORE-SCR7-SAME: "-target-abi" "lp64d"
+
+// RUN: %clang --target=riscv64 -### -c %s 2>&1 -mtune=syntacore-scr7 | FileCheck -check-prefix=MTUNE-SYNTACORE-SCR7 %s
+// MTUNE-SYNTACORE-SCR7: "-tune-cpu" "syntacore-scr7"
diff --git a/clang/test/Misc/target-invalid-cpu-note/riscv.c b/clang/test/Misc/target-invalid-cpu-note/riscv.c
index 96d3cefd434d78..7bbf3574af3c35 100644
--- a/clang/test/Misc/target-invalid-cpu-note/riscv.c
+++ b/clang/test/Misc/target-invalid-cpu-note/riscv.c
@@ -40,6 +40,7 @@
 // RISCV64-SAME: {{^}}, syntacore-scr3-rv64
 // RISCV64-SAME: {{^}}, syntacore-scr4-rv64
 // RISCV64-SAME: {{^}}, syntacore-scr5-rv64
+// RISCV64-SAME: {{^}}, syntacore-scr7
 // RISCV64-SAME: {{^}}, veyron-v1
 // RISCV64-SAME: {{^}}, xiangshan-nanhu
 // RISCV64-SAME: {{$}}
@@ -85,6 +86,7 @@
 // TUNE-RISCV64-SAME: {{^}}, syntacore-scr3-rv64
 // TUNE-RISCV64-SAME: {{^}}, syntacore-scr4-rv64
 // TUNE-RISCV64-SAME: {{^}}, syntacore-scr5-rv64
+// TUNE-RISCV64-SAME: {{^}}, syntacore-scr7
 // TUNE-RISCV64-SAME: {{^}}, veyron-v1
 // TUNE-RISCV64-SAME: {{^}}, xiangshan-nanhu
 // TUNE-RISCV64-SAME: {{^}}, generic
diff --git a/llvm/docs/ReleaseNotes.rst b/llvm/docs/ReleaseNotes.rst
index 52456896f2fc6c..6df4c37b092432 100644
--- a/llvm/docs/ReleaseNotes.rst
+++ b/llvm/docs/ReleaseNotes.rst
@@ -123,6 +123,7 @@ Changes to the RISC-V Backend
   largely untested.
 * The ``Zvbc32e`` and ``Zvkgs`` extensions are now supported experimentally.
 * Added ``Smctr`` and ``Ssctr`` extensions.
+* ``-mcpu=syntacore-scr7`` was added.
 
 Changes to the WebAssembly Backend
 ----------------------------------
diff --git a/llvm/lib/Target/RISCV/RISCVProcessors.td b/llvm/lib/Target/RISCV/RISCVProcessors.td
index d4ec5ecc6489c1..c4e1a1457e8d30 100644
--- a/llvm/lib/Target/RISCV/RISCVProcessors.td
+++ b/llvm/lib/Target/RISCV/RISCVProcessors.td
@@ -383,6 +383,25 @@ def SYNTACORE_SCR5_RV64 : RISCVProcessorModel<"syntacore-scr5-rv64",
                                                FeatureStdExtC],
                                               [TuneNoDefaultUnroll, FeaturePostRAScheduler]>;
 
+def SYNTACORE_SCR7 : RISCVProcessorModel<"syntacore-scr7",
+                                              NoSchedModel,
+                                              [Feature64Bit,
+                                               FeatureStdExtI,
+                                               FeatureStdExtZicsr,
+                                               FeatureStdExtZifencei,
+                                               FeatureStdExtM,
+                                               FeatureStdExtA,
+                                               FeatureStdExtF,
+                                               FeatureStdExtD,
+                                               FeatureStdExtC,
+                                               FeatureStdExtV,
+                                               FeatureStdExtZba,
+                                               FeatureStdExtZbb,
+                                               FeatureStdExtZbc,
+                                               FeatureStdExtZbs,
+                                               FeatureStdExtZkn],
+                                              [TuneNoDefaultUnroll, FeaturePostRAScheduler]>;
+
 def VENTANA_VEYRON_V1 : RISCVProcessorModel<"veyron-v1",
                                             NoSchedModel,
                                             [Feature64Bit,

``````````

</details>


https://github.com/llvm/llvm-project/pull/108406