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Remove uses of -Oz flag (#7128)

Browse Source 
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
View File
@@ -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";
}
toolchain/driver/testdata/compile/optimize/fail_clang_forward_optimize_size.carbon
Vendored
+1 -1
View File
@@ -11,6 +11,6 @@
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/driver/testdata/compile/optimize/fail_clang_forward_optimize_size.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/driver/testdata/compile/optimize/fail_clang_forward_optimize_size.carbon
// CHECK:STDERR: "{{.*}}/toolchain/install/llvm/bin/clang" "-cc1" {{.*}} "-Oz" {{.*}}
// CHECK:STDERR: "{{.*}}/toolchain/install/llvm/bin/clang" "-cc1" {{.*}} "-O2" {{.*}}
// --- fail_foo.carbon