[PATCH] D124478: [IRCE] Avoid computing potentially unnecessary analyses. NFC

[Anna Thomas via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rGc515b2f39e77: [IRCE] Avoid computing potentially unnecessary analyses. NFC (authored by anna).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D124478/new/

https://reviews.llvm.org/D124478

Files:
  llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp


Index: llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
===================================================================
--- llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
+++ llvm/lib/Transforms/Scalar/InductiveRangeCheckElimination.cpp
@@ -1761,10 +1761,14 @@
 }
 
 PreservedAnalyses IRCEPass::run(Function &F, FunctionAnalysisManager &AM) {
-  auto &SE = AM.getResult<ScalarEvolutionAnalysis>(F);
   auto &DT = AM.getResult<DominatorTreeAnalysis>(F);
-  auto &BPI = AM.getResult<BranchProbabilityAnalysis>(F);
   LoopInfo &LI = AM.getResult<LoopAnalysis>(F);
+  // There are no loops in the function. Return before computing other expensive
+  // analyses.
+  if (LI.empty())
+    return PreservedAnalyses::all();
+  auto &SE = AM.getResult<ScalarEvolutionAnalysis>(F);
+  auto &BPI = AM.getResult<BranchProbabilityAnalysis>(F);
 
   // Get BFI analysis result on demand. Please note that modification of
   // CFG invalidates this analysis and we should handle it.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D124478.425504.patch
Type: text/x-patch
Size: 1000 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20220427/6d523a11/attachment.bin>