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Rollup merge of #92877 - Amanieu:remove_llvm_nounwind, r=Mark-Simulacrum

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Remove LLVMRustMarkAllFunctionsNounwind

This was originally introduced in #10916 as a way to remove all landing
pads when performing LTO. However this is no longer necessary today
since rustc properly marks all functions and call-sites as nounwind
where appropriate.

In fact this is incorrect in the presence of `extern "C-unwind"` which
must create a landing pad when compiled with `-C panic=abort` so that
foreign exceptions are caught and properly turned into aborts.
This commit is contained in:
Matthias Krüger 2022-01-17 20:07:07 +01:00 • committed by GitHub
commit 7f02604f3d
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4 changed files with 1 additions and 40 deletions
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compiler/rustc_codegen_llvm/src/llvm/ffi.rs
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@ -2320,7 +2320,6 @@ extern "C" {
pub fn LLVMRustSetNormalizedTarget(M: &Module, triple: *const c_char);
pub fn LLVMRustAddAlwaysInlinePass(P: &PassManagerBuilder, AddLifetimes: bool);
pub fn LLVMRustRunRestrictionPass(M: &Module, syms: *const *const c_char, len: size_t);
pub fn LLVMRustMarkAllFunctionsNounwind(M: &Module);
pub fn LLVMRustOpenArchive(path: *const c_char) -> Option<&'static mut Archive>;
pub fn LLVMRustArchiveIteratorNew(AR: &Archive) -> &mut ArchiveIterator<'_>;