[PATCH] D126929: Add sanitizer metadata attributes to clang IR gen.

[Vitaly Buka via Phabricator via llvm-commits]

vitalybuka added inline comments.


================
Comment at: clang/lib/CodeGen/SanitizerMetadata.cpp:34
+
+static void expandKernelSanitizerMasks(SanitizerMask *Mask) {
+  if (*Mask & (SanitizerKind::Address | SanitizerKind::KernelAddress))
----------------
Prefer return value to output parameters:

```
SanitizerMask expandKernelSanitizerMasks(SanitizerMask Mask) {
  if (Mask & (SanitizerKind::Address | SanitizerKind::KernelAddress))
    Mask |= SanitizerKind::Address | SanitizerKind::KernelAddress;
  return Mask;
}
```


================
Comment at: clang/lib/CodeGen/SanitizerMetadata.cpp:58-59
+
+  Meta.NoAddress |= NoSanitizeAttrSet.hasOneOf(SanitizerKind::Address |
+                                               SanitizerKind::KernelAddress);
+  Meta.NoAddress |= CGM.isInNoSanitizeList(
----------------
you don't need both here after expansion

you can either remove expandKernelSanitizerMasks(&NoSanitizeAttrMask);
or SanitizerKind::KernelAddress from here


================
Comment at: clang/lib/CodeGen/SanitizerMetadata.cpp:62
+      FsanitizeArgument.Mask &
+          (SanitizerKind::Address | SanitizerKind::KernelAddress),
+      GV, Loc, Ty);
----------------
same


================
Comment at: clang/lib/CodeGen/SanitizerMetadata.cpp:101
+      llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
+          llvm::Type::getInt1Ty(VMContext), Meta.IsDynInit)),
       llvm::ConstantAsMetadata::get(llvm::ConstantInt::get(
----------------
Meta.IsDynInit -> IsDynInit
they must be equal, and this legacy code better not use new Meta.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D126929/new/

https://reviews.llvm.org/D126929