================
@@ -1635,6 +1635,118 @@ bool SemaRISCV::isValidFMVExtension(StringRef Ext) {
return -1 != RISCVISAInfo::getRISCVFeaturesBitsInfo(Ext).second;
}
+enum FirstParam { Unsupported, Duplicate, Unknown };
+enum SecondParam { None, CPU, Tune };
+enum ThirdParam { Target, TargetClones, TargetVersion };
+
+bool SemaRISCV::checkTargetVersionAttr(StringRef Str, SourceLocation Loc) {
+ llvm::SmallVector<StringRef, 8> AttrStrs;
+ Str.split(AttrStrs, ';');
+
+ bool HasArch = false;
+ bool HasPriority = false;
+ bool HasDefault = false;
+ bool DuplicateAttr = false;
+ for (StringRef AttrStr : AttrStrs) {
+ // Only support arch=+ext,... syntax.
+ if (AttrStr.starts_with("arch=+")) {
+ if (HasArch)
+ DuplicateAttr = true;
+ HasArch = true;
+ ParsedTargetAttr TargetAttr =
+ getASTContext().getTargetInfo().parseTargetAttr(AttrStr);
+
+ if (TargetAttr.Features.empty() ||
+ llvm::any_of(TargetAttr.Features, [&](const StringRef Ext) {
+ return !isValidFMVExtension(Ext);
+ }))
+ return Diag(Loc, diag::warn_unsupported_target_attribute)
+ << Unsupported << None << AttrStr << TargetVersion;
+ } else if (AttrStr.starts_with("default")) {
+ if (HasDefault)
+ DuplicateAttr = true;
+ HasDefault = true;
+ } else if (AttrStr.consume_front("priority=")) {
+ if (HasPriority)
+ DuplicateAttr = true;
+ HasPriority = true;
+ unsigned Digit;
+ if (AttrStr.getAsInteger(0, Digit))
+ return Diag(Loc, diag::warn_unsupported_target_attribute)
+ << Unsupported << None << AttrStr << TargetVersion;
+ } else {
+ return Diag(Loc, diag::warn_unsupported_target_attribute)
+ << Unsupported << None << AttrStr << TargetVersion;
+ }
+ }
+
+ if (((HasPriority || HasArch) && HasDefault) || DuplicateAttr ||
+ (HasPriority && !HasArch))
+ return Diag(Loc, diag::warn_unsupported_target_attribute)
+ << Unsupported << None << Str << TargetVersion;
+
+ return false;
+}
+
+bool SemaRISCV::checkTargetClonesAttr(
+ SmallVectorImpl<StringRef> &Strs, SmallVectorImpl<SourceLocation> &Locs,
+ SmallVectorImpl<SmallString<64>> &Buffer) {
+ assert(Strs.size() == Locs.size() &&
+ "Mismatch between number of strings and locations");
+
+ bool HasDefault = false;
+ for (unsigned I = 0; I < Strs.size(); ++I) {
+ StringRef Str = Strs[I].trim();
+ SourceLocation Loc = Locs[I];
+
+ llvm::SmallVector<StringRef, 8> AttrStrs;
+ Str.split(AttrStrs, ";");
+
+ bool IsPriority = false;
+ bool IsDefault = false;
+ for (StringRef AttrStr : AttrStrs) {
+ // Only support arch=+ext,... syntax.
+ if (AttrStr.starts_with("arch=+")) {
+ ParsedTargetAttr TargetAttr =
+ getASTContext().getTargetInfo().parseTargetAttr(AttrStr);
+
+ if (TargetAttr.Features.empty() ||
+ llvm::any_of(TargetAttr.Features, [&](const StringRef Ext) {
+ return !isValidFMVExtension(Ext);
+ }))
+ return Diag(Loc, diag::warn_unsupported_target_attribute)
+ << Unsupported << None << Str << TargetClones;
+ } else if (AttrStr.starts_with("default")) {
----------------
labrinea wrote:
I think this should be `if (AttrStr == "default")`
https://github.com/llvm/llvm-project/pull/149067
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