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authorJacob Pratt <jacob@jhpratt.dev>2025-01-06 22:04:13 -0500
committerGitHub <noreply@github.com>2025-01-06 22:04:13 -0500
commit4e4a93c2dd4bae8472924d03c37f387fbf3b074c (patch)
treec8db61e78f14c45c4121735e00d7d6d7c8e5d35d /compiler/rustc_codegen_llvm
parent0f1e965fec3bc2f97b932e9dd8e85fca6d7faadc (diff)
parent49c74234a79107afa7f86ca947708c3abef07674 (diff)
downloadrust-4e4a93c2dd4bae8472924d03c37f387fbf3b074c.tar.gz
rust-4e4a93c2dd4bae8472924d03c37f387fbf3b074c.zip
Rollup merge of #131830 - hoodmane:emscripten-wasm-eh, r=workingjubilee
Add support for wasm exception handling to Emscripten target

This is a draft because we need some additional setting for the Emscripten target to select between the old exception handling and the new exception handling. I don't know how to add a setting like that, would appreciate advice from Rust folks. We could maybe choose to use the new exception handling if `Ctarget-feature=+exception-handling` is passed? I tried this but I get errors from llvm so I'm not doing it right.
Diffstat (limited to 'compiler/rustc_codegen_llvm')
-rw-r--r--compiler/rustc_codegen_llvm/src/llvm_util.rs5
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs
index e18e91e569f..c3d7c217861 100644
--- a/compiler/rustc_codegen_llvm/src/llvm_util.rs
+++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs
@@ -109,7 +109,10 @@ unsafe fn configure_llvm(sess: &Session) {
             add("-wasm-enable-eh", false);
         }
 
-        if sess.target.os == "emscripten" && sess.panic_strategy() == PanicStrategy::Unwind {
+        if sess.target.os == "emscripten"
+            && !sess.opts.unstable_opts.emscripten_wasm_eh
+            && sess.panic_strategy() == PanicStrategy::Unwind
+        {
             add("-enable-emscripten-cxx-exceptions", false);
         }