From 9a8be606f3f0801df0e128f09e37057da10a0b64 Mon Sep 17 00:00:00 2001 From: Tobias Edler von Koch Date: Thu, 21 Jun 2018 20:20:41 +0000 Subject: [LTO] Enable module summary emission by default for regular LTO Summary: With D33921, we gained the ability to have module summaries in regular LTO modules without triggering ThinLTO compilation. Module summaries in regular LTO allow garbage collection (dead stripping) before LTO compilation and thus open up additional optimization opportunities. This patch enables summary emission in regular LTO for all targets except ld64-based ones (which use the legacy LTO API). Reviewers: pcc, tejohnson, mehdi_amini Subscribers: inglorion, eraman, cfe-commits Differential Revision: https://reviews.llvm.org/D34156 llvm-svn: 335284 --- clang/lib/Frontend/CompilerInvocation.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'clang/lib/Frontend/CompilerInvocation.cpp') diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp index 1f9d6b0..60ed5fd 100644 --- a/clang/lib/Frontend/CompilerInvocation.cpp +++ b/clang/lib/Frontend/CompilerInvocation.cpp @@ -749,11 +749,11 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK, Opts.ProfileSampleAccurate = Args.hasArg(OPT_fprofile_sample_accurate); Opts.PrepareForLTO = Args.hasArg(OPT_flto, OPT_flto_EQ); - Opts.EmitSummaryIndex = false; + Opts.PrepareForThinLTO = false; if (Arg *A = Args.getLastArg(OPT_flto_EQ)) { StringRef S = A->getValue(); if (S == "thin") - Opts.EmitSummaryIndex = true; + Opts.PrepareForThinLTO = true; else if (S != "full") Diags.Report(diag::err_drv_invalid_value) << A->getAsString(Args) << S; } -- cgit v1.1