Add a subclass of IntrinsicInst for llvm.assume [nfc]

Add the subclass, update a few places which check for the intrinsic to use idiomatic dyn_cast, and update the public interface of AssumptionCache to use the new class.  A follow up change will do the same for the newer assumption query/bundle mechanisms.

1 files changed, 5 insertions, 8 deletions

diff --git a/llvm/lib/Analysis/AssumptionCache.cpp b/llvm/lib/Analysis/AssumptionCache.cpp
index 70053fd..753ea5f 100644
--- a/llvm/lib/Analysis/AssumptionCache.cpp
+++ b/llvm/lib/Analysis/AssumptionCache.cpp
@@ -56,7 +56,7 @@ AssumptionCache::getOrInsertAffectedValues(Value *V) {
 }
 
 static void
-findAffectedValues(CallInst *CI,
+findAffectedValues(CallBase *CI,
                    SmallVectorImpl<AssumptionCache::ResultElem> &Affected) {
   // Note: This code must be kept in-sync with the code in
   // computeKnownBitsFromAssume in ValueTracking.
@@ -126,7 +126,7 @@ findAffectedValues(CallInst *CI,
   }
 }
 
-void AssumptionCache::updateAffectedValues(CallInst *CI) {
+void AssumptionCache::updateAffectedValues(AssumeInst *CI) {
   SmallVector<AssumptionCache::ResultElem, 16> Affected;
   findAffectedValues(CI, Affected);
 
@@ -139,7 +139,7 @@ void AssumptionCache::updateAffectedValues(CallInst *CI) {
   }
 }
 
-void AssumptionCache::unregisterAssumption(CallInst *CI) {
+void AssumptionCache::unregisterAssumption(AssumeInst *CI) {
   SmallVector<AssumptionCache::ResultElem, 16> Affected;
   findAffectedValues(CI, Affected);
 
@@ -211,13 +211,10 @@ void AssumptionCache::scanFunction() {
 
   // Update affected values.
   for (auto &A : AssumeHandles)
-    updateAffectedValues(cast<CallInst>(A));
+    updateAffectedValues(cast<AssumeInst>(A));
 }
 
-void AssumptionCache::registerAssumption(CallInst *CI) {
-  assert(match(CI, m_Intrinsic<Intrinsic::assume>()) &&
-         "Registered call does not call @llvm.assume");
-
+void AssumptionCache::registerAssumption(AssumeInst *CI) {
   // If we haven't scanned the function yet, just drop this assumption. It will
   // be found when we scan later.
   if (!Scanned)