[clang] [clang][bytecode] Disable tailcalls on i386 (PR #189242)

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llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-clang

Author: Timm Baeder (tbaederr)

<details>
<summary>Changes</summary>

Works around a build problem with GCC 15 reported in https://github.com/llvm/llvm-project/pull/188419#issuecomment-4148497506

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Full diff: https://github.com/llvm/llvm-project/pull/189242.diff


1 Files Affected:

- (modified) clang/lib/AST/ByteCode/Interp.cpp (+2-1) 


``````````diff
diff --git a/clang/lib/AST/ByteCode/Interp.cpp b/clang/lib/AST/ByteCode/Interp.cpp
index 168f5c363c42d..0a13456e6026d 100644
--- a/clang/lib/AST/ByteCode/Interp.cpp
+++ b/clang/lib/AST/ByteCode/Interp.cpp
@@ -40,7 +40,8 @@ using namespace clang::interp;
 // We disable it on MSVC generally since it doesn't seem to be able
 // 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)
+#if defined(_MSC_VER) || defined(__powerpc__) || !defined(MUSTTAIL) ||         \
+    defined(__i386__)
 #undef MUSTTAIL
 #define MUSTTAIL
 #define USE_TAILCALLS 0

``````````

</details>


https://github.com/llvm/llvm-project/pull/189242