[llvm-bugs] [Bug 32579] New: endless loop in DAGCombiner when compiling Firefox

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=32579

            Bug ID: 32579
           Summary: endless loop in DAGCombiner when compiling Firefox
           Product: new-bugs
           Version: trunk
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: new bugs
          Assignee: unassignedbugs at nondot.org
          Reporter: octoploid at yandex.com
                CC: llvm-bugs at lists.llvm.org

% clang++ -c -O3 -std=gnu++11 -w -fPIC -fno-strict-aliasing -ffunction-sections
-fdata-sections -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions
nsContentUtils.ii


perf shows:

Overhead  Shared Object                       Symbol                            
  31.90%  libLLVMSupport.so.5.0.0svn          [.] 
 llvm::SmallPtrSetImplBase::FindBucketFor
  25.40%  libLLVMSelectionDAG.so.5.0.0svn     [.] (anonymous
namespace)::DAGCombiner::MergeConsecutiveStores
  18.80%  libLLVMSupport.so.5.0.0svn          [.]
llvm::SmallPtrSetImplBase::insert_imp_big
   4.85%  libLLVMSupport.so.5.0.0svn          [.]
llvm::SmallPtrSetImplBase::Grow

-- 
You are receiving this mail because:
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.llvm.org/pipermail/llvm-bugs/attachments/20170408/38ded771/attachment.html>