[clang] [NVPTX] Correctly forward the PTX feature to the nvlink wrapper (PR #100607)

[via cfe-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Joseph Huber (jhuber6)

<details>
<summary>Changes</summary>

Summary:
This is necessary for LTO when the user specifies it or has a CUDA
version that supports a sufficiently high version. Previously it would
default.

Fixes https://github.com/llvm/llvm-project/issues/100606

---
Full diff: https://github.com/llvm/llvm-project/pull/100607.diff


1 Files Affected:

- (modified) clang/test/Driver/cuda-cross-compiling.c (+8) 


``````````diff
diff --git a/clang/test/Driver/cuda-cross-compiling.c b/clang/test/Driver/cuda-cross-compiling.c
index 42d56cbfcc321..c2e538c25329e 100644
--- a/clang/test/Driver/cuda-cross-compiling.c
+++ b/clang/test/Driver/cuda-cross-compiling.c
@@ -90,3 +90,11 @@
 // RUN:   | FileCheck -check-prefix=GENERIC %s
 
 // GENERIC-NOT: -cc1" "-triple" "nvptx64-nvidia-cuda" {{.*}} "-target-cpu"
+
+//
+// Test forwarding the necessary +ptx feature.
+//
+// RUN: %clang -target nvptx64-nvidia-cuda --cuda-feature=+ptx63 -march=sm_52 -### %s 2>&1 \
+// RUN:   | FileCheck -check-prefix=FEATURE %s
+
+// FEATURE: clang-nvlink-wrapper{{.*}}"--feature" "+ptx63"

``````````

</details>


https://github.com/llvm/llvm-project/pull/100607