================
@@ -2497,7 +2497,8 @@ AArch64FrameLowering::getFrameIndexReference(const
MachineFunction &MF, int FI,
return resolveFrameIndexReference(
MF, FI, FrameReg,
/*PreferFP=*/
- MF.getFunction().hasFnAttribute(Attribute::SanitizeHWAddress),
+ MF.getFunction().hasFnAttribute(Attribute::SanitizeHWAddress) ||
+ MF.getFunction().hasFnAttribute(Attribute::SanitizeMemTag),
/*ForSimm=*/false);
----------------
fmayer wrote:
I don't think that makes a difference. I compiled a [moderately complicated
file from
AOSP](https://cs.android.com/android/platform/superproject/main/+/main:system/unwinding/libunwindstack/Unwinder.cpp)
with memtag-stack and without this change (and with and without the
`-stack-tagging-record-stack-history=instr`), and the assembly is the same.
The docstring "getFrameIndexReference - Provide a base+offset reference to an
FI slot for debug info." also implies this shouldn't affect codegen.
https://github.com/llvm/llvm-project/pull/86356
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