[llvm] [RISCV] Add ESWIN EIC770X (SiFive P550) to getHostCPUNameForRISCV. (PR #125277)

[Craig Topper via llvm-commits]

https://github.com/topperc created https://github.com/llvm/llvm-project/pull/125277

This enables -mcpu=native for the HiFive Premier P550 board.

>From d749895ae32ad38b60180179f06a375e672d505c Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper at sifive.com>
Date: Fri, 31 Jan 2025 11:56:14 -0800
Subject: [PATCH] [RISCV] Add ESWIN EIC770X (SiFive P550) to
 getHostCPUNameForRISCV.

This enables -mcpu=native for the HiFive Premier P550 board.
---
 llvm/lib/TargetParser/Host.cpp       |  1 +
 llvm/unittests/TargetParser/Host.cpp | 13 +++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/llvm/lib/TargetParser/Host.cpp b/llvm/lib/TargetParser/Host.cpp
index fa57ae183bb84a..d6a16143fe9e97 100644
--- a/llvm/lib/TargetParser/Host.cpp
+++ b/llvm/lib/TargetParser/Host.cpp
@@ -493,6 +493,7 @@ StringRef sys::detail::getHostCPUNameForRISCV(StringRef ProcCpuinfoContent) {
   }
 
   return StringSwitch<const char *>(UArch)
+      .Case("eswin,eic770x", "sifive-p550")
       .Case("sifive,u74-mc", "sifive-u74")
       .Case("sifive,bullet0", "sifive-u74")
       .Default("");
diff --git a/llvm/unittests/TargetParser/Host.cpp b/llvm/unittests/TargetParser/Host.cpp
index c5b96e1df904e6..6eb13649a59040 100644
--- a/llvm/unittests/TargetParser/Host.cpp
+++ b/llvm/unittests/TargetParser/Host.cpp
@@ -405,6 +405,19 @@ uarch           : sifive,u74-mc
   EXPECT_EQ(
       sys::detail::getHostCPUNameForRISCV("uarch           : sifive,bullet0\n"),
       "sifive-u74");
+
+  const StringRef SifiveP550MCProcCPUInfo = R"(
+processor       : 0
+hart            : 2
+isa             : rv64imafdch_zicsr_zifencei_zba_zbb_sscofpmf
+mmu             : sv48
+uarch           : eswin,eic770x
+)";
+  EXPECT_EQ(sys::detail::getHostCPUNameForRISCV(SifiveP550MCProcCPUInfo),
+            "sifive-p550");
+  EXPECT_EQ(
+      sys::detail::getHostCPUNameForRISCV("uarch           : eswin,eic770x\n"),
+      "sifive-p550");
 }
 
 static bool runAndGetCommandOutput(