[clang] clang: Report full triple arch string in --offload-arch diagnostic (PR #195849)

[Matt Arsenault via cfe-commits]

https://github.com/arsenm created https://github.com/llvm/llvm-project/pull/195849

This was previously only printing the top level arch string. Print
the full arch + subarch from the triple.

>From 3de65b468944e62262b2e783e1e26b5225ca6ff6 Mon Sep 17 00:00:00 2001
From: Matt Arsenault <Matthew.Arsenault at amd.com>
Date: Sat, 2 May 2026 10:38:33 +0100
Subject: [PATCH] clang: Report full triple arch string in --offload-arch
 diagnostic

This was previously only printing the top level arch string. Print
the full arch + subarch from the triple.
---
 clang/lib/Driver/Driver.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clang/lib/Driver/Driver.cpp b/clang/lib/Driver/Driver.cpp
index a283abef09f32..6546e2a809dc9 100644
--- a/clang/lib/Driver/Driver.cpp
+++ b/clang/lib/Driver/Driver.cpp
@@ -4879,7 +4879,7 @@ Driver::getOffloadArchs(Compilation &C, const llvm::opt::DerivedArgList &Args,
           auto GPUsOrErr = TC.getSystemGPUArchs(Args);
           if (!GPUsOrErr) {
             TC.getDriver().Diag(diag::err_drv_undetermined_gpu_arch)
-                << llvm::Triple::getArchTypeName(TC.getArch())
+                << TC.getTriple().getArchName()
                 << llvm::toString(GPUsOrErr.takeError()) << "--offload-arch";
             continue;
           }