[clang] f2685fa - [clang][bytecode] Disable tail calls on sparc (#189887)

[via cfe-commits]

Author: Timm Baeder
Date: 2026-04-01T12:59:02+02:00
New Revision: f2685fabc5bbe33a8b95b665dc4e24223c42fdd9

URL: https://github.com/llvm/llvm-project/commit/f2685fabc5bbe33a8b95b665dc4e24223c42fdd9
DIFF: https://github.com/llvm/llvm-project/commit/f2685fabc5bbe33a8b95b665dc4e24223c42fdd9.diff

LOG: [clang][bytecode] Disable tail calls on sparc (#189887)

Looks like this causes problems there as well:
https://lab.llvm.org/buildbot/#/builders/114/builds/252

Interp.cpp:2572:21: error: cannot tail-call: target is not able to
optimize the call into a sibling call
 2572 |   MUSTTAIL return Fn(S, PC);
      |                   ~~^~~~~~~

Added: 
    

Modified: 
    clang/lib/AST/ByteCode/Interp.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/AST/ByteCode/Interp.cpp b/clang/lib/AST/ByteCode/Interp.cpp
index 81b9f6d58f8a3..96a8ad609eaf1 100644
--- a/clang/lib/AST/ByteCode/Interp.cpp
+++ b/clang/lib/AST/ByteCode/Interp.cpp
@@ -41,7 +41,7 @@ using namespace clang::interp;
 // to handle the way we use tailcalls.
 // PPC can't tail-call external calls, which is a problem for InterpNext.
 #if defined(_MSC_VER) || defined(__powerpc__) || !defined(MUSTTAIL) ||         \
-    defined(__i386__)
+    defined(__i386__) || defined(__sparc__)
 #undef MUSTTAIL
 #define MUSTTAIL
 #define USE_TAILCALLS 0