[compiler-rt] [compiler-rt][test] Disable lld tests on SPARC (PR #100533)

[Rainer Orth via llvm-commits]

https://github.com/rorth created https://github.com/llvm/llvm-project/pull/100533

As detailed in Issue #100320, a considerable number of tests that explicitly use `-fuse-ld=lld` `FAIL` on Linux/sparc64 due to several `lld` limitations (no 32-bit SPARC support, lack of support for various relocations, ...).

To reduce the noise, this patch disables `COMPILER_RT_HAS_LLD` on SPARC wholesale.

Tested on `sparc64-unknown-linux-gnu`.

>From 2b5be5f9d5a978ab309715e74b65b4b7f0381412 Mon Sep 17 00:00:00 2001
From: Rainer Orth <ro at gcc.gnu.org>
Date: Thu, 25 Jul 2024 10:43:13 +0200
Subject: [PATCH] [compiler-rt][test] Disable lld tests on SPARC

As detailed in Issue #100320, a considerable number of tests that
explicitly use `-fuse-ld=lld` `FAIL` on Linux/sparc64 due to several `lld`
limitations (no 32-bit SPARC support, lack of support for various
relocations, ...).

To reduce the noise, this patch disables `COMPILER_RT_HAS_LLD` on SPARC
wholesale.

Tested on `sparc64-unknown-linux-gnu`.
---
 compiler-rt/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler-rt/CMakeLists.txt b/compiler-rt/CMakeLists.txt
index 65063e0057bbc..6b8d9a5ea46d6 100644
--- a/compiler-rt/CMakeLists.txt
+++ b/compiler-rt/CMakeLists.txt
@@ -801,6 +801,10 @@ if(ANDROID)
   append_list_if(COMPILER_RT_HAS_FUSE_LD_LLD_FLAG -fuse-ld=lld SANITIZER_COMMON_LINK_FLAGS)
   append_list_if(COMPILER_RT_HAS_LLD -fuse-ld=lld COMPILER_RT_UNITTEST_LINK_FLAGS)
 endif()
+if(${COMPILER_RT_DEFAULT_TARGET_ARCH} MATCHES sparc)
+  # lld has several bugs/limitations on SPARC, so disable (Issue #100320).
+  set(COMPILER_RT_HAS_LLD FALSE)
+endif()
 pythonize_bool(COMPILER_RT_HAS_LLD)
 pythonize_bool(COMPILER_RT_TEST_USE_LLD)