[CodeGenPrepare] Limit recursion depth for collectBitParts
[CodeGenPrepare] Limit recursion depth for collectBitParts

Summary:
Seeing some issues for windows debug pathological cases with collectBitParts
recursion (1525 levels of recursion!)
Setting the limit to 64 as this should be sufficient - passes all lit cases

Subscribers: llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61728

Change-Id: I7f44cdc6c1badf1c2ccbf1b0c4b6afe27ecb39a1

git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@360347 91177308-0d34-0410-b5e6-96231b3b80d8

apple/swift-llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,apple/swift-llvm,GPUOpen-Drivers/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,apple/swift-llvm,llvm-mirror/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,GPUOpen-Drivers/llvm,llvm-mirror/llvm,apple/swift-llvm,apple/swift-llvm,llvm-mirror/llvm