[PATCH] D78624: [CaptureTracking] Replace hardcoded constant to option. NFC.
Serguei Katkov via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Wed Apr 22 09:13:26 PDT 2020
skatkov updated this revision to Diff 259316.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D78624/new/
https://reviews.llvm.org/D78624
Files:
llvm/include/llvm/Analysis/CaptureTracking.h
llvm/lib/Analysis/CaptureTracking.cpp
llvm/lib/Transforms/IPO/AttributorAttributes.cpp
Index: llvm/lib/Transforms/IPO/AttributorAttributes.cpp
===================================================================
--- llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -4170,7 +4170,8 @@
// defined in AACaptureUseTracker, that can look at in-flight abstract
// attributes and directly updates the assumed state.
SmallVector<const Value *, 4> PotentialCopies;
- unsigned RemainingUsesToExplore = DefaultMaxUsesToExplore;
+ unsigned RemainingUsesToExplore =
+ getDefaultMaxUsesToExploreForCaptureTracking();
AACaptureUseTracker Tracker(A, *this, IsDeadAA, T, PotentialCopies,
RemainingUsesToExplore);
Index: llvm/lib/Analysis/CaptureTracking.cpp
===================================================================
--- llvm/lib/Analysis/CaptureTracking.cpp
+++ llvm/lib/Analysis/CaptureTracking.cpp
@@ -28,6 +28,15 @@
using namespace llvm;
+static cl::opt<unsigned>
+DefaultMaxUsesToExplore("capture-tracking-max-uses-to-explore", cl::Hidden,
+ cl::desc("Maximal number of uses to explore."),
+ cl::init(20));
+
+unsigned llvm::getDefaultMaxUsesToExploreForCaptureTracking() {
+ return DefaultMaxUsesToExplore;
+}
+
CaptureTracker::~CaptureTracker() {}
bool CaptureTracker::shouldExplore(const Use *U) { return true; }
@@ -215,8 +224,9 @@
void llvm::PointerMayBeCaptured(const Value *V, CaptureTracker *Tracker,
unsigned MaxUsesToExplore) {
assert(V->getType()->isPointerTy() && "Capture is for pointers only!");
- SmallVector<const Use *, DefaultMaxUsesToExplore> Worklist;
- SmallSet<const Use *, DefaultMaxUsesToExplore> Visited;
+ SmallVector<const Use *, 20> Worklist;
+ Worklist.reserve(getDefaultMaxUsesToExploreForCaptureTracking());
+ SmallSet<const Use *, 20> Visited;
auto AddUses = [&](const Value *V) {
unsigned Count = 0;
Index: llvm/include/llvm/Analysis/CaptureTracking.h
===================================================================
--- llvm/include/llvm/Analysis/CaptureTracking.h
+++ llvm/include/llvm/Analysis/CaptureTracking.h
@@ -27,7 +27,7 @@
/// TODO: we should probably introduce a caching CaptureTracking analysis and
/// use it where possible. The caching version can use much higher limit or
/// don't have this cap at all.
- unsigned constexpr DefaultMaxUsesToExplore = 20;
+ unsigned getDefaultMaxUsesToExploreForCaptureTracking();
/// PointerMayBeCaptured - Return true if this pointer value may be captured
/// by the enclosing function (which is required to exist). This routine can
@@ -38,10 +38,10 @@
/// automatically counts as capturing it or not.
/// MaxUsesToExplore specifies how many uses should the analysis explore for
/// one value before giving up due too "too many uses".
- bool PointerMayBeCaptured(const Value *V,
- bool ReturnCaptures,
+ bool PointerMayBeCaptured(const Value *V, bool ReturnCaptures,
bool StoreCaptures,
- unsigned MaxUsesToExplore = DefaultMaxUsesToExplore);
+ unsigned MaxUsesToExplore =
+ getDefaultMaxUsesToExploreForCaptureTracking());
/// PointerMayBeCapturedBefore - Return true if this pointer value may be
/// captured by the enclosing function (which is required to exist). If a
@@ -55,10 +55,11 @@
/// final parameter is true.
/// MaxUsesToExplore specifies how many uses should the analysis explore for
/// one value before giving up due too "too many uses".
- bool PointerMayBeCapturedBefore(const Value *V, bool ReturnCaptures,
- bool StoreCaptures, const Instruction *I,
- const DominatorTree *DT, bool IncludeI = false,
- unsigned MaxUsesToExplore = DefaultMaxUsesToExplore);
+ bool PointerMayBeCapturedBefore(
+ const Value *V, bool ReturnCaptures, bool StoreCaptures,
+ const Instruction *I, const DominatorTree *DT, bool IncludeI = false,
+ unsigned MaxUsesToExplore =
+ getDefaultMaxUsesToExploreForCaptureTracking());
/// This callback is used in conjunction with PointerMayBeCaptured. In
/// addition to the interface here, you'll need to provide your own getters
@@ -94,7 +95,8 @@
/// MaxUsesToExplore specifies how many uses should the analysis explore for
/// one value before giving up due too "too many uses".
void PointerMayBeCaptured(const Value *V, CaptureTracker *Tracker,
- unsigned MaxUsesToExplore = DefaultMaxUsesToExplore);
+ unsigned MaxUsesToExplore =
+ getDefaultMaxUsesToExploreForCaptureTracking());
} // end namespace llvm
#endif
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