jmmartinez added inline comments.
================
Comment at: clang/lib/CodeGen/CGCall.cpp:2017
+ for (StringRef Feature : llvm::split(FFeatures.getValueAsString(), ',')) {
+ bool EnabledForFunc = Feature[0] == '+';
+ StringRef Name = Feature.substr(1);
----------------
arsenm wrote:
> Do you need to guard against empty string?
I checked and I saw some tests without it. I'm adding the condition for it.
================
Comment at: clang/lib/CodeGen/CGCall.cpp:2018
+ bool EnabledForFunc = Feature[0] == '+';
+ StringRef Name = Feature.substr(1);
+ auto TEntry = TFeatures.find(Name);
----------------
arsenm wrote:
> consume_front
I used drop_front(1) instead, consume_front would only work with "+" and not
drop "-".
================
Comment at: clang/lib/CodeGen/CGCall.cpp:2030-2031
+ bool EnabledForTarget = TEntry->second;
+ if (EnabledForTarget != EnabledForFunc)
+ return;
+ }
----------------
arsenm wrote:
> Early return breaks the other features
I did not understand this remark.
If the features are not compatible, we do not add a "target-features" entry in
the new "FuncAttrs". Then, the old "target-features" entry is kept in the
Function coming from the builtin.
If you think it would be better to set the target-features in FuncAttrs to the
old value in any case. If that's the case I've added the following code:
if (EnabledForTarget != EnabledForFunc) {
FuncAttr.addAttribute(FFeatures);
return;
}
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D159206/new/
https://reviews.llvm.org/D159206
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