https://github.com/ilovepi created
https://github.com/llvm/llvm-project/pull/124990
Fuchsia uses TLSDESC by default for all target architectures.
>From 6b6eb8cb15b8af034d6d79cbd28e9e5d31916f86 Mon Sep 17 00:00:00 2001
From: Paul Kirth <paulki...@google.com>
Date: Wed, 29 Jan 2025 19:12:17 +0000
Subject: [PATCH] [llvm] Enable TLSDESC by default on Fuchsia targets
Fuchsia uses TLSDESC by default for all target architectures.
---
clang/test/Driver/tls-dialect.c | 5 +++++
llvm/include/llvm/TargetParser/Triple.h | 4 +++-
2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/clang/test/Driver/tls-dialect.c b/clang/test/Driver/tls-dialect.c
index 3471b55b0ebae9..9ab79e87353d88 100644
--- a/clang/test/Driver/tls-dialect.c
+++ b/clang/test/Driver/tls-dialect.c
@@ -10,6 +10,11 @@
/// TLSDESC is not on by default in Linux, even on RISC-V, and is covered above
// RUN: %clang -### --target=riscv64-android %s 2>&1 | FileCheck
--check-prefix=DESC %s
+/// Fuchsia supports TLSDESC by default for all architectures.
+// RUN: %clang -### --target=riscv64-unknown-fuchsia %s 2>&1 | FileCheck
--check-prefix=DESC %s
+// RUN: %clang -### --target=aarch64-unknown-fuchsia %s 2>&1 | FileCheck
--check-prefix=DESC %s
+// RUN: %clang -### --target=x86_64-unknown-fuchsia %s 2>&1 | FileCheck
--check-prefix=DESC %s
+
/// LTO
// RUN: %clang -### --target=loongarch64-linux -flto -mtls-dialect=desc %s
2>&1 | FileCheck --check-prefix=LTO-DESC %s
// RUN: %clang -### --target=loongarch64-linux -flto %s 2>&1 | FileCheck
--check-prefix=LTO-NODESC %s
diff --git a/llvm/include/llvm/TargetParser/Triple.h
b/llvm/include/llvm/TargetParser/Triple.h
index 8097300c6e630c..6afc6ec974ca72 100644
--- a/llvm/include/llvm/TargetParser/Triple.h
+++ b/llvm/include/llvm/TargetParser/Triple.h
@@ -1119,7 +1119,9 @@ class Triple {
/// True if the target supports both general-dynamic and TLSDESC, and TLSDESC
/// is enabled by default.
- bool hasDefaultTLSDESC() const { return isAndroid() && isRISCV64(); }
+ bool hasDefaultTLSDESC() const {
+ return (isAndroid() && isRISCV64()) || isOSFuchsia();
+ }
/// Tests whether the target uses -data-sections as default.
bool hasDefaultDataSections() const {
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