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| author | Zola Bridges <zbrid@google.com> | 2018-11-27 19:56:46 +0000 |
|---|---|---|
| committer | Zola Bridges <zbrid@google.com> | 2018-11-27 19:56:46 +0000 |
| commit | cbac3ad122cf9410580ca24ae5b9a53bfc135426 (patch) | |
| tree | dc3a12ba782f96374596805833c8182e7614d65f /clang/lib/CodeGen/CGCall.cpp | |
| parent | e20e6b4a535be735e9e4a2155eb80beae8c9b4a9 (diff) | |
| download | bcm5719-llvm-cbac3ad122cf9410580ca24ae5b9a53bfc135426.tar.gz bcm5719-llvm-cbac3ad122cf9410580ca24ae5b9a53bfc135426.zip | |
[clang][slh] add attribute for speculative load hardening
Summary:
Resubmit this with no changes because I think the build was broken
by a different diff.
-----
The prior diff had to be reverted because there were two tests
that failed. I updated the two tests in this diff
clang/test/Misc/pragma-attribute-supported-attributes-list.test
clang/test/SemaCXX/attr-speculative-load-hardening.cpp
----- Summary from Previous Diff (Still Accurate) -----
LLVM IR already has an attribute for speculative_load_hardening. Before
this commit, when a user passed the -mspeculative-load-hardening flag to
Clang, every function would have this attribute added to it. This Clang
attribute will allow users to opt into SLH on a function by function basis.
This can be applied to functions and Objective C methods.
Reviewers: chandlerc, echristo, kristof.beyls, aaron.ballman
Subscribers: llvm-commits
Differential Revision: https://reviews.llvm.org/D54915
llvm-svn: 347701
Diffstat (limited to 'clang/lib/CodeGen/CGCall.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGCall.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CGCall.cpp b/clang/lib/CodeGen/CGCall.cpp index 0ec5c7fb452..6d89f3919fd 100644 --- a/clang/lib/CodeGen/CGCall.cpp +++ b/clang/lib/CodeGen/CGCall.cpp @@ -1791,6 +1791,8 @@ void CodeGenModule::ConstructDefaultFnAttrList(StringRef Name, bool HasOptnone, if (CodeGenOpts.Backchain) FuncAttrs.addAttribute("backchain"); + // FIXME: The interaction of this attribute with the SLH command line flag + // has not been determined. if (CodeGenOpts.SpeculativeLoadHardening) FuncAttrs.addAttribute(llvm::Attribute::SpeculativeLoadHardening); } @@ -1854,6 +1856,8 @@ void CodeGenModule::ConstructAttributeList( FuncAttrs.addAttribute(llvm::Attribute::NoDuplicate); if (TargetDecl->hasAttr<ConvergentAttr>()) FuncAttrs.addAttribute(llvm::Attribute::Convergent); + if (TargetDecl->hasAttr<SpeculativeLoadHardeningAttr>()) + FuncAttrs.addAttribute(llvm::Attribute::SpeculativeLoadHardening); if (const FunctionDecl *Fn = dyn_cast<FunctionDecl>(TargetDecl)) { AddAttributesFromFunctionProtoType( |
