From 5ce5ea3786246815ce4913dcf8020bde976d2c95 Mon Sep 17 00:00:00 2001 From: Tom Eccles Date: Wed, 29 Nov 2023 17:10:18 +0000 Subject: Revert "[flang] Enable alias tags pass by default (#73111)" (#73821) This reverts commit caba0314cf631a3ba3e982cbcdc455224046c7a8. Serious performance regressions were reported by @vzakhari https://github.com/llvm/llvm-project/issues/58303#issuecomment-1830754173 Fixing this doesn't look quick so I will revert for now. --- flang/lib/Frontend/CompilerInvocation.cpp | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) (limited to 'flang/lib/Frontend/CompilerInvocation.cpp') diff --git a/flang/lib/Frontend/CompilerInvocation.cpp b/flang/lib/Frontend/CompilerInvocation.cpp index 0dc11ab..30e53ce 100644 --- a/flang/lib/Frontend/CompilerInvocation.cpp +++ b/flang/lib/Frontend/CompilerInvocation.cpp @@ -242,12 +242,10 @@ static void parseCodeGenArgs(Fortran::frontend::CodeGenOptions &opts, clang::driver::options::OPT_fno_loop_versioning, false)) opts.LoopVersioning = 1; - opts.AliasAnalysis = opts.OptimizationLevel > 0; - if (auto *arg = - args.getLastArg(clang::driver::options::OPT_falias_analysis, - clang::driver::options::OPT_fno_alias_analysis)) - opts.AliasAnalysis = - arg->getOption().matches(clang::driver::options::OPT_falias_analysis); + opts.AliasAnalysis = + args.hasFlag(clang::driver::options::OPT_falias_analysis, + clang::driver::options::OPT_fno_alias_analysis, + /*default=*/false); for (auto *a : args.filtered(clang::driver::options::OPT_fpass_plugin_EQ)) opts.LLVMPassPlugins.push_back(a->getValue()); -- cgit v1.1