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[SILGen] Minor improvements to generateEnumCaseBlocks

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Noticed by MichaelG while reviewing my changes in the previous commit.
No intended functionality change.
This commit is contained in:
Jordan Rose
2018-02-21 10:33:35 -08:00
parent 36eae9d4f6
commit 49e71c9415
1 changed files with 5 additions and 7 deletions
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12
lib/SILGen/SILGenPattern.cpp
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@@ -1710,7 +1710,7 @@ static void generateEnumCaseBlocks(
auto enumDecl = sourceType.getEnumOrBoundGenericEnum();
llvm::DenseMap<EnumElementDecl*, unsigned> caseToIndex;
llvm::SmallDenseMap<EnumElementDecl *, unsigned, 16> caseToIndex;
for (auto &row : rows) {
EnumElementDecl *formalElt;
Pattern *subPattern = nullptr;
@@ -1774,12 +1774,10 @@ static void generateEnumCaseBlocks(
if (canAssumeExhaustive) {
// Check that Sema didn't let any cases slip through. (This can happen
// with @_downgrade_exhaustivity_check.)
for (auto elt : enumDecl->getAllElements()) {
if (!caseToIndex.count(elt)) {
canAssumeExhaustive = false;
break;
}
}
canAssumeExhaustive = llvm::all_of(enumDecl->getAllElements(),
[&](const EnumElementDecl *elt) {
return caseToIndex.count(elt);
});
}
if (!canAssumeExhaustive)