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Remove uses of -Oz flag (#7128)

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The `-Oz` flag has been [removed from
LLVM](https://github.com/llvm/llvm-project/pull/191363). The documented
replacement is to use `-O2` in conjunction with the `optsize` or
`minsize` attributes, which we already apply in lowering.
This commit is contained in:
Geoff Romer
2026-04-28 17:39:09 +00:00
committed by GitHub
parent 73adc479e3
commit a8c6a7f88d
2 changed files with 3 additions and 3 deletions
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toolchain/driver/compile_subcommand.cpp
+2 -2
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@@ -865,7 +865,7 @@ static auto GetLLVMOptimizationLevel(Lower::OptimizationLevel opt_level)
case Lower::OptimizationLevel::Debug:
return llvm::OptimizationLevel::O1;
case Lower::OptimizationLevel::Size:
return llvm::OptimizationLevel::Oz;
return llvm::OptimizationLevel::O2;
case Lower::OptimizationLevel::Speed:
return llvm::OptimizationLevel::O3;
}
@@ -880,7 +880,7 @@ static auto GetClangOptimizationFlag(Lower::OptimizationLevel opt_level)
case Lower::OptimizationLevel::Debug:
return "-O1";
case Lower::OptimizationLevel::Size:
return "-Oz";
return "-O2";
case Lower::OptimizationLevel::Speed:
return "-O3";
}