From: Zola Bridges Date: Mon, 26 Nov 2018 18:13:31 +0000 (+0000) Subject: [clang][slh] Forward mSLH only to Clang CC1 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=1d87d1f352ee4196363927b40923b66b7c1c6a34;p=clang [clang][slh] Forward mSLH only to Clang CC1 Summary: -mno-speculative-load-hardening isn't a cc1 option, therefore, before this change: clang -mno-speculative-load-hardening hello.cpp would have the following error: error: unknown argument: '-mno-speculative-load-hardening' This change will only ever forward -mspeculative-load-hardening which is a CC1 option based on which flag was passed to clang. Also added a test that uses this option that fails if an error like the above is ever thrown. Thank you ericwf for help debugging and fixing this error. Reviewers: chandlerc, EricWF Subscribers: llvm-commits Differential Revision: https://reviews.llvm.org/D54763 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@347582 91177308-0d34-0410-b5e6-96231b3b80d8 --- diff --git a/lib/Driver/ToolChains/Clang.cpp b/lib/Driver/ToolChains/Clang.cpp index 9a36f7b429..6b2083ce02 100644 --- a/lib/Driver/ToolChains/Clang.cpp +++ b/lib/Driver/ToolChains/Clang.cpp @@ -4452,8 +4452,9 @@ void Clang::ConstructJob(Compilation &C, const JobAction &JA, Args.AddLastArg(CmdArgs, options::OPT_pthread); - Args.AddLastArg(CmdArgs, options::OPT_mspeculative_load_hardening, - options::OPT_mno_speculative_load_hardening); + if (Args.hasFlag(options::OPT_mspeculative_load_hardening, options::OPT_mno_speculative_load_hardening, + false)) + CmdArgs.push_back(Args.MakeArgString("-mspeculative-load-hardening")); RenderSSPOptions(TC, Args, CmdArgs, KernelOrKext); diff --git a/test/CodeGen/attr-speculative-load-hardening.c b/test/CodeGen/attr-speculative-load-hardening.c index ccbded44bb..97bccd0358 100644 --- a/test/CodeGen/attr-speculative-load-hardening.c +++ b/test/CodeGen/attr-speculative-load-hardening.c @@ -1,4 +1,5 @@ // RUN: %clang_cc1 -mspeculative-load-hardening -disable-llvm-passes -emit-llvm %s -o - | FileCheck %s -check-prefix=SLH +// RUN: %clang -mno-speculative-load-hardening -S -emit-llvm %s -o - | FileCheck %s -check-prefix=NOSLH // // Check that we set the attribute on each function. @@ -8,3 +9,7 @@ int test1() { // SLH: @{{.*}}test1{{.*}}[[SLH:#[0-9]+]] // SLH: attributes [[SLH]] = { {{.*}}speculative_load_hardening{{.*}} } + +// NOSLH: @{{.*}}test1{{.*}}[[NOSLH:#[0-9]+]] + +// NOSLH-NOT: attributes [[SLH]] = { {{.*}}speculative_load_hardening{{.*}} }