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Rollup merge of #155656 - durin42:llvm-23-back-in-kansas, r=nikic

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rustc_llvm: update opt-level handling for LLVM 23

LLVM 23 removed Os and Oz optimization pipelines and the PR says to use O2 with optsize or minsize instead as appropriate.

See https://github.com/llvm/llvm-project/pull/191363 for more details.
This commit is contained in:
Jonathan Brouwer
2026-04-23 09:38:26 +02:00
committed by GitHub
parent f586047144 f6b8f0b6f1
commit 0fa807c149
1 changed files with 7 additions and 0 deletions
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compiler/rustc_llvm/llvm-wrapper/PassWrapper.cpp
+7
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@@ -165,10 +165,17 @@ static OptimizationLevel fromRust(LLVMRustPassBuilderOptLevel Level) {
return OptimizationLevel::O2;
case LLVMRustPassBuilderOptLevel::O3:
return OptimizationLevel::O3;
#if LLVM_VERSION_GE(23, 0)
case LLVMRustPassBuilderOptLevel::Os:
return OptimizationLevel::O2;
case LLVMRustPassBuilderOptLevel::Oz:
return OptimizationLevel::O2;
#else
case LLVMRustPassBuilderOptLevel::Os:
return OptimizationLevel::Os;
case LLVMRustPassBuilderOptLevel::Oz:
return OptimizationLevel::Oz;
#endif
default:
report_fatal_error("Bad PassBuilderOptLevel.");
}