[PATCH] D45189: [MachineOutliner][AArch64] Keep track of functions that use a red zone in AArch64MachineFunctionInfo and use that instead of checking for noredzone in the MachineOutliner

[Francis Visoiu Mistrih via Phabricator via llvm-commits]

thegameg added inline comments.


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Comment at: lib/Target/AArch64/AArch64MachineFunctionInfo.h:94
+  /// True when the function uses a red zone.
+  bool UsesRedZone = false;
+
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Since this is available only after PEI, I wonder if it wouldn't be safer to initialize `UsesRedZone` to `!F.hasFnAttribute(Attribute::NoRedZone)`. That way if the function is called before PEI we use the attribute, and after PEI we overwrite this.


https://reviews.llvm.org/D45189