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Add AnalysisUsage::addRequiredTransitive() to keep analysis info alive for

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future queries by clients.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12329 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Misha Brukman
2004-03-12 06:13:15 +00:00
parent f820e3b4b8
commit 8e18789ede
1 changed files with 17 additions and 4 deletions
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21
include/llvm/PassAnalysisSupport.h
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@@ -25,14 +25,15 @@ namespace llvm {
//===----------------------------------------------------------------------===//
// AnalysisUsage - Represent the analysis usage information of a pass. This
// tracks analyses that the pass REQUIRES (must available when the pass runs),
// and analyses that the pass PRESERVES (the pass does not invalidate the
// results of these analyses). This information is provided by a pass to the
// tracks analyses that the pass REQUIRES (must be available when the pass
// runs), REQUIRES TRANSITIVE (must be available throughout the lifetime of the
// pass), and analyses that the pass PRESERVES (the pass does not invalidate the
// results of these analyses). This information is provided by a pass to the
// Pass infrastructure through the getAnalysisUsage virtual function.
//
class AnalysisUsage {
// Sets of analyses required and preserved by a pass
std::vector<AnalysisID> Required, Preserved;
std::vector<AnalysisID> Required, RequiredTransitive, Preserved;
bool PreservesAll;
public:
AnalysisUsage() : PreservesAll(false) {}
@@ -51,6 +52,15 @@ public:
return *this;
}
template<class PassClass>
AnalysisUsage &addRequiredTransitive() {
AnalysisID ID = Pass::getClassPassInfo<PassClass>();
assert(ID && "Pass class not registered!");
Required.push_back(ID);
RequiredTransitive.push_back(ID);
return *this;
}
// addPreserved - Add the specified ID to the set of analyses preserved by
// this pass
//
@@ -82,6 +92,9 @@ public:
void setPreservesCFG();
const std::vector<AnalysisID> &getRequiredSet() const { return Required; }
const std::vector<AnalysisID> &getRequiredTransitiveSet() const {
return RequiredTransitive;
}
const std::vector<AnalysisID> &getPreservedSet() const { return Preserved; }
};