Add a DominatorTree argument to isLCSSA so that it doesn't have to

compute a set of reachable blocks for itself each time it is called, which
is fairly frequently.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98179 91177308-0d34-0410-b5e6-96231b3b80d8

3 files changed, 3 insertions, 4 deletions

diff --git a/lib/Transforms/Scalar/IndVarSimplify.cpp b/lib/Transforms/Scalar/IndVarSimplify.cpp
index cb563c3..838a3e7 100644
--- a/lib/Transforms/Scalar/IndVarSimplify.cpp
+++ b/lib/Transforms/Scalar/IndVarSimplify.cpp
@@ -215,7 +215,7 @@ ICmpInst *IndVarSimplify::LinearFunctionTestReplace(Loop *L,
 void IndVarSimplify::RewriteLoopExitValues(Loop *L,
                                            SCEVExpander &Rewriter) {
   // Verify the input to the pass in already in LCSSA form.
-  assert(L->isLCSSAForm());
+  assert(L->isLCSSAForm(*DT));
 
   SmallVector<BasicBlock*, 8> ExitBlocks;
   L->getUniqueExitBlocks(ExitBlocks);
@@ -445,7 +445,7 @@ bool IndVarSimplify::runOnLoop(Loop *L, LPPassManager &LPM) {
   // Clean up dead instructions.
   Changed |= DeleteDeadPHIs(L->getHeader());
   // Check a post-condition.
-  assert(L->isLCSSAForm() && "Indvars did not leave the loop in lcssa form!");
+  assert(L->isLCSSAForm(*DT) && "Indvars did not leave the loop in lcssa form!");
   return Changed;
 }
 
diff --git a/lib/Transforms/Scalar/LoopUnrollPass.cpp b/lib/Transforms/Scalar/LoopUnrollPass.cpp
index a355ec3..4ad41ae 100644
--- a/lib/Transforms/Scalar/LoopUnrollPass.cpp
+++ b/lib/Transforms/Scalar/LoopUnrollPass.cpp
@@ -86,7 +86,6 @@ static unsigned ApproximateLoopSize(const Loop *L, unsigned &NumCalls) {
 }
 
 bool LoopUnroll::runOnLoop(Loop *L, LPPassManager &LPM) {
-  assert(L->isLCSSAForm());
   LoopInfo *LI = &getAnalysis<LoopInfo>();
 
   BasicBlock *Header = L->getHeader();
diff --git a/lib/Transforms/Scalar/LoopUnswitch.cpp b/lib/Transforms/Scalar/LoopUnswitch.cpp
index 071e9b7..e3b809e 100644
--- a/lib/Transforms/Scalar/LoopUnswitch.cpp
+++ b/lib/Transforms/Scalar/LoopUnswitch.cpp
@@ -206,7 +206,7 @@ bool LoopUnswitch::runOnLoop(Loop *L, LPPassManager &LPM_Ref) {
   Function *F = currentLoop->getHeader()->getParent();
   bool Changed = false;
   do {
-    assert(currentLoop->isLCSSAForm());
+    assert(currentLoop->isLCSSAForm(*DT));
     redoLoop = false;
     Changed |= processCurrentLoop();
   } while(redoLoop);