[OPENMP50]Add parsing/sema analysis for declare variant score.
Context selectors may include optional score clause in format
`score(<expr>):`, where `<expr>` must be a constant integer expression.
Added parsing/sema analysis only.
llvm-svn: 373502
diff --git a/clang/lib/Parse/ParseOpenMP.cpp b/clang/lib/Parse/ParseOpenMP.cpp
index 46c8238..c7143fd 100644
--- a/clang/lib/Parse/ParseOpenMP.cpp
+++ b/clang/lib/Parse/ParseOpenMP.cpp
@@ -786,6 +786,31 @@
LinModifiers, Steps, SourceRange(Loc, EndLoc));
}
+/// Parse optional 'score' '(' <expr> ')' ':'.
+static ExprResult parseContextScore(Parser &P) {
+ ExprResult ScoreExpr;
+ SmallString<16> Buffer;
+ StringRef SelectorName =
+ P.getPreprocessor().getSpelling(P.getCurToken(), Buffer);
+ OMPDeclareVariantAttr::ScoreType ScoreKind =
+ OMPDeclareVariantAttr::ScoreUnknown;
+ (void)OMPDeclareVariantAttr::ConvertStrToScoreType(SelectorName, ScoreKind);
+ if (ScoreKind == OMPDeclareVariantAttr::ScoreUnknown)
+ return ScoreExpr;
+ assert(ScoreKind == OMPDeclareVariantAttr::ScoreSpecified &&
+ "Expected \"score\" clause.");
+ (void)P.ConsumeToken();
+ SourceLocation RLoc;
+ ScoreExpr = P.ParseOpenMPParensExpr(SelectorName, RLoc);
+ // Parse ':'
+ if (P.getCurToken().is(tok::colon))
+ (void)P.ConsumeAnyToken();
+ else
+ P.Diag(P.getCurToken(), diag::warn_pragma_expected_colon)
+ << "context selector score clause";
+ return ScoreExpr;
+}
+
/// Parse context selector for 'implementation' selector set:
/// 'vendor' '(' <vendor> ')'
static void
@@ -815,6 +840,7 @@
BalancedDelimiterTracker T(P, tok::l_paren, tok::annot_pragma_openmp_end);
(void)T.expectAndConsume(diag::err_expected_lparen_after,
CtxSelectorName.data());
+ Data.CtxScore = parseContextScore(P);
// Parse <vendor>.
StringRef VendorName;
if (Tok.is(tok::identifier)) {