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[stackprotector] Add command line option -fstack-protector-strong

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This option has the following effects:
 * It adds the sspstrong IR attribute to each function within the CU.
 * It defines the macro __SSP_STRONG__ with the value of 2.

Differential Revision: http://llvm-reviews.chandlerc.com/D2717

llvm-svn: 201120
This commit is contained in:
Josh Magee
2014-02-11 01:35:14 +00:00
parent a47009dbd3
commit e0fc1a80cb
9 changed files with 36 additions and 10 deletions
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2
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -651,6 +651,8 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
if (LangOpts.getStackProtector() == LangOptions::SSPOn)
B.addAttribute(llvm::Attribute::StackProtect);
else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
B.addAttribute(llvm::Attribute::StackProtectStrong);
else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
B.addAttribute(llvm::Attribute::StackProtectReq);