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[AArch64] Simplify BTI/PAC-RET module flags

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These module flags use the Min merge behavior with a default value of
zero, so we don't need to emit them if zero.

Reviewed By: danielkiss

Differential Revision: https://reviews.llvm.org/D130145
This commit is contained in:
Fangrui Song
2022-07-26 09:48:35 -07:00
parent 9891bb2302
commit de1b5c9145
10 changed files with 2968 additions and 2969 deletions
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23
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -795,18 +795,17 @@ void CodeGenModule::Release() {
Arch == llvm::Triple::arm || Arch == llvm::Triple::armeb ||
Arch == llvm::Triple::aarch64 || Arch == llvm::Triple::aarch64_32 ||
Arch == llvm::Triple::aarch64_be) {
getModule().addModuleFlag(llvm::Module::Min, "branch-target-enforcement",
LangOpts.BranchTargetEnforcement);
getModule().addModuleFlag(llvm::Module::Min, "sign-return-address",
LangOpts.hasSignReturnAddress());
getModule().addModuleFlag(llvm::Module::Min, "sign-return-address-all",
LangOpts.isSignReturnAddressScopeAll());
getModule().addModuleFlag(llvm::Module::Min,
"sign-return-address-with-bkey",
!LangOpts.isSignReturnAddressWithAKey());
if (LangOpts.BranchTargetEnforcement)
getModule().addModuleFlag(llvm::Module::Min, "branch-target-enforcement",
1);
if (LangOpts.hasSignReturnAddress())
getModule().addModuleFlag(llvm::Module::Min, "sign-return-address", 1);
if (LangOpts.isSignReturnAddressScopeAll())
getModule().addModuleFlag(llvm::Module::Min, "sign-return-address-all",
1);
if (!LangOpts.isSignReturnAddressWithAKey())
getModule().addModuleFlag(llvm::Module::Min,
"sign-return-address-with-bkey", 1);
}
if (!CodeGenOpts.MemoryProfileOutput.empty()) {