[PATCH] D69598: Work on cleaning up denormal mode handling

[Matt Arsenault via Phabricator via cfe-commits]

arsenm marked an inline comment as done.
arsenm added inline comments.


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Comment at: clang/lib/CodeGen/CGCall.cpp:1736-1737
+    if (CodeGenOpts.FPSubnormalMode != llvm::SubnormalMode::Invalid)
+      FuncAttrs.addAttribute("denormal-fp-math",
+                             llvm::subnormalModeName(CodeGenOpts.FPSubnormalMode));
 
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spatel wrote:
> Do you plan to change the attribute string from "denormal" to "subnormal" as part of upgrading it to work per-FP-type? Would we need to auto-upgrade old IR as part of making the string consistent with the code?
> 
> Can we stash the attribute string name inside a getter function in the new ADT file, so clang and LLVM have a common source of truth for the attribute name?
I'm considering it, but at the moment I'm trying to avoid changes. The next step I'm working on is adding denormal-fp-math-f32 (or maybe subnormal-fp-math-f32), which will co-exist and override the current attribute if the type matches


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  https://reviews.llvm.org/D69598/new/

https://reviews.llvm.org/D69598