[clang] [clang][CUDA] Assume unknown emission status for skipped function definitions (PR #100124)

[kadir çetinkaya via cfe-commits]

https://github.com/kadircet updated https://github.com/llvm/llvm-project/pull/100124

>From 40e518d66df536253be9d36a1d91c10ecbaf2bff Mon Sep 17 00:00:00 2001
From: Kadir Cetinkaya <kadircet at google.com>
Date: Tue, 23 Jul 2024 15:43:30 +0200
Subject: [PATCH] [clang][CUDA] Assume unknown emission status for skipped
 function definitions

---
 clang/lib/Sema/SemaDecl.cpp             | 6 ++++--
 clang/unittests/Tooling/ToolingTest.cpp | 5 +++++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
index bb25a0b3a45ae..575bd292f27de 100644
--- a/clang/lib/Sema/SemaDecl.cpp
+++ b/clang/lib/Sema/SemaDecl.cpp
@@ -20148,8 +20148,10 @@ Sema::FunctionEmissionStatus Sema::getEmissionStatus(const FunctionDecl *FD,
     // be emitted, because (say) the definition could include "inline".
     const FunctionDecl *Def = FD->getDefinition();
 
-    return Def && !isDiscardableGVALinkage(
-                      getASTContext().GetGVALinkageForFunction(Def));
+    // We can't compute linkage when we skip function bodies.
+    return Def && !Def->hasSkippedBody() &&
+           !isDiscardableGVALinkage(
+               getASTContext().GetGVALinkageForFunction(Def));
   };
 
   if (LangOpts.OpenMPIsTargetDevice) {
diff --git a/clang/unittests/Tooling/ToolingTest.cpp b/clang/unittests/Tooling/ToolingTest.cpp
index 2e3da2cd2a701..f41a44fa0922a 100644
--- a/clang/unittests/Tooling/ToolingTest.cpp
+++ b/clang/unittests/Tooling/ToolingTest.cpp
@@ -586,6 +586,11 @@ TEST(runToolOnCode, TestSkipFunctionBody) {
   EXPECT_FALSE(runToolOnCodeWithArgs(
       std::make_unique<SkipBodyAction>(),
       "template<typename T> int skipMeNot() { an_error_here }", Args2));
+
+  EXPECT_TRUE(runToolOnCodeWithArgs(
+      std::make_unique<SkipBodyAction>(),
+      "__inline __attribute__((__gnu_inline__)) void skipMe() {}",
+      {"--cuda-host-only", "-nocudainc", "-xcuda"}));
 }
 
 TEST(runToolOnCodeWithArgs, TestNoDepFile) {