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

[Joseph Huber via cfe-commits]

https://github.com/jhuber6 created https://github.com/llvm/llvm-project/pull/100607

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.


>From 1156979b150f9ae778cf28adb7adcb812c1ceffb Mon Sep 17 00:00:00 2001
From: Joseph Huber <huberjn at outlook.com>
Date: Thu, 25 Jul 2024 12:31:09 -0500
Subject: [PATCH] [NVPTX] Correctly forward the PTX feature to the nvlink
 wrapper

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.
---
 clang/test/Driver/cuda-cross-compiling.c | 8 ++++++++
 1 file changed, 8 insertions(+)

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"