From 48f4ccba3331255dc93a85b5596e33f6e0d353da Mon Sep 17 00:00:00 2001
From: Ophestra <cat@gensokyo.uk>
Date: Sat, 31 Jan 2026 21:59:20 +0900
Subject: [PATCH] internal/rosa/llvm: add rosa vendor

This cleans up checks specific to Rosa OS, and fixes stack overflow in llvm under certain conditions.

Signed-off-by: Ophestra <cat@gensokyo.uk>
---
 internal/rosa/go.go   |  9 +++-----
 internal/rosa/llvm.go | 50 ++++++++++++++++++++++++++++++++++---------
 2 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/internal/rosa/go.go b/internal/rosa/go.go
index 76f84f8..31417ee 100644
--- a/internal/rosa/go.go
+++ b/internal/rosa/go.go
@@ -15,15 +15,12 @@ func (t Toolchain) newGoBootstrap() pkg.Artifact {
 	}, nil, []string{
 		"CGO_ENABLED=0",
 	}, `
-mkdir -p /var/tmp
-cp -r /usr/src/go /work
-cd /work/go/src
+mkdir -p /var/tmp/ /work/system/
+cp -r /usr/src/go /work/system/
+cd /work/system/go/src
 chmod -R +w ..
 
 ./make.bash
-cd /work/
-mkdir system/
-mv go/ system/
 `, pkg.Path(AbsUsrSrc.Append("go"), false, pkg.NewHTTPGetTar(
 		nil, "https://dl.google.com/go/go1.4-bootstrap-20171003.tar.gz",
 		mustDecode(checksum),
diff --git a/internal/rosa/llvm.go b/internal/rosa/llvm.go
index 101258b..632a79f 100644
--- a/internal/rosa/llvm.go
+++ b/internal/rosa/llvm.go
@@ -322,6 +322,40 @@ ninja check-all
 `,
 
 		patches: [][2]string{
+			{"add-rosa-vendor", `diff --git a/llvm/include/llvm/TargetParser/Triple.h b/llvm/include/llvm/TargetParser/Triple.h
+index 657f4230379e..12c305756184 100644
+--- a/llvm/include/llvm/TargetParser/Triple.h
++++ b/llvm/include/llvm/TargetParser/Triple.h
+@@ -185,6 +185,7 @@ public:
+
+     Apple,
+     PC,
++    Rosa,
+     SCEI,
+     Freescale,
+     IBM,
+diff --git a/llvm/lib/TargetParser/Triple.cpp b/llvm/lib/TargetParser/Triple.cpp
+index 0584c941d2e6..e4d6ef963cc7 100644
+--- a/llvm/lib/TargetParser/Triple.cpp
++++ b/llvm/lib/TargetParser/Triple.cpp
+@@ -269,6 +269,7 @@ StringRef Triple::getVendorTypeName(VendorType Kind) {
+   case NVIDIA: return "nvidia";
+   case OpenEmbedded: return "oe";
+   case PC: return "pc";
++  case Rosa: return "rosa";
+   case SCEI: return "scei";
+   case SUSE: return "suse";
+   }
+@@ -669,6 +670,7 @@ static Triple::VendorType parseVendor(StringRef VendorName) {
+       .Case("suse", Triple::SUSE)
+       .Case("oe", Triple::OpenEmbedded)
+       .Case("intel", Triple::Intel)
++      .Case("rosa", Triple::Rosa)
+       .Default(Triple::UnknownVendor);
+ }
+
+`},
+
 			{"xfail-broken-tests", `diff --git a/clang/test/Modules/timestamps.c b/clang/test/Modules/timestamps.c
 index 50fdce630255..4b4465a75617 100644
 --- a/clang/test/Modules/timestamps.c
@@ -362,16 +396,14 @@ index cdbf21fb9026..dd052858700d 100644
 `},
 
 			{"path-system-libraries", `diff --git a/clang/lib/Driver/ToolChains/CommonArgs.cpp b/clang/lib/Driver/ToolChains/CommonArgs.cpp
-index 8d3775de9be5..1e126e2d6f24 100644
+index 8d3775de9be5..5200b2a4d37d 100644
 --- a/clang/lib/Driver/ToolChains/CommonArgs.cpp
 +++ b/clang/lib/Driver/ToolChains/CommonArgs.cpp
-@@ -463,6 +463,15 @@ void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
+@@ -463,6 +463,13 @@ void tools::AddLinkerInputs(const ToolChain &TC, const InputInfoList &Inputs,
    if (!TC.isCrossCompiling())
      addDirectoryList(Args, CmdArgs, "-L", "LIBRARY_PATH");
 
-+  const std::string RosaSuffix = "-rosa-linux-musl";
-+  if (TC.getTripleString().size() > RosaSuffix.size() &&
-+      std::equal(RosaSuffix.rbegin(), RosaSuffix.rend(), TC.getTripleString().rbegin())) {
++  if (TC.getTriple().getVendor() == llvm::Triple::Rosa) {
 +    CmdArgs.push_back("-rpath");
 +    CmdArgs.push_back("/system/lib");
 +    CmdArgs.push_back("-rpath");
@@ -382,7 +414,7 @@ index 8d3775de9be5..1e126e2d6f24 100644
      // If the current tool chain refers to an OpenMP offloading host, we
      // should ignore inputs that refer to OpenMP offloading devices -
 diff --git a/clang/lib/Driver/ToolChains/Linux.cpp b/clang/lib/Driver/ToolChains/Linux.cpp
-index 8ac8d4eb9181..795995bb53cb 100644
+index 8ac8d4eb9181..7d2d8541aca9 100644
 --- a/clang/lib/Driver/ToolChains/Linux.cpp
 +++ b/clang/lib/Driver/ToolChains/Linux.cpp
 @@ -324,6 +324,7 @@ Linux::Linux(const Driver &D, const llvm::Triple &Triple, const ArgList &Args)
@@ -414,13 +446,11 @@ index 8ac8d4eb9181..795995bb53cb 100644
  }
 
  ToolChain::RuntimeLibType Linux::GetDefaultRuntimeLibType() const {
-@@ -457,6 +462,11 @@ std::string Linux::getDynamicLinker(const ArgList &Args) const {
+@@ -457,6 +462,9 @@ std::string Linux::getDynamicLinker(const ArgList &Args) const {
      return Triple.isArch64Bit() ? "/system/bin/linker64" : "/system/bin/linker";
    }
    if (Triple.isMusl()) {
-+    const std::string RosaSuffix = "-rosa-linux-musl";
-+    if (Triple.str().size() > RosaSuffix.size() &&
-+        std::equal(RosaSuffix.rbegin(), RosaSuffix.rend(), Triple.str().rbegin()))
++    if (Triple.getVendor() == llvm::Triple::Rosa)
 +      return "/system/bin/linker";
 +
      std::string ArchName;