xazax.hun created this revision.
Right now source locations from different translation units can not be
compared.
This is a problem for an upcoming feature in the Static Analyzer, the cross
translation unit support (https://reviews.llvm.org/D30691).
It would be great to be able to sort the source locations, even if there are no
guarantee to have
a meaningful order between source locations from different translation units.
Repository:
rL LLVM
https://reviews.llvm.org/D34506
Files:
lib/Basic/SourceManager.cpp
Index: lib/Basic/SourceManager.cpp
===================================================================
--- lib/Basic/SourceManager.cpp
+++ lib/Basic/SourceManager.cpp
@@ -2034,6 +2034,9 @@
}
/// \brief Determines the order of 2 source locations in the translation unit.
+/// It also works when two locations are from different translation
+/// units. In that case it will return *some* order, that is
+/// deterministic for that invocation of the compiler.
///
/// \returns true if LHS source location comes before RHS, false otherwise.
bool SourceManager::isBeforeInTranslationUnit(SourceLocation LHS,
@@ -2130,7 +2133,8 @@
return LIsScratch;
return LOffs.second < ROffs.second;
}
- llvm_unreachable("Unsortable locations found");
+ // Source locations from different translation units.
+ return LOffs.first < ROffs.first;
}
void SourceManager::PrintStats() const {
Index: lib/Basic/SourceManager.cpp
===================================================================
--- lib/Basic/SourceManager.cpp
+++ lib/Basic/SourceManager.cpp
@@ -2034,6 +2034,9 @@
}
/// \brief Determines the order of 2 source locations in the translation unit.
+/// It also works when two locations are from different translation
+/// units. In that case it will return *some* order, that is
+/// deterministic for that invocation of the compiler.
///
/// \returns true if LHS source location comes before RHS, false otherwise.
bool SourceManager::isBeforeInTranslationUnit(SourceLocation LHS,
@@ -2130,7 +2133,8 @@
return LIsScratch;
return LOffs.second < ROffs.second;
}
- llvm_unreachable("Unsortable locations found");
+ // Source locations from different translation units.
+ return LOffs.first < ROffs.first;
}
void SourceManager::PrintStats() const {
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