[PATCH] D10477: Expand loop reroll to handle loop with multiple induction variables and negative increment -part 1/3

[Lawrence Hu]

hulx2000 added inline comments.

================
Comment at: lib/Transforms/Scalar/LoopRerollPass.cpp:677
@@ -661,2 +676,3 @@
 
-  for (auto *UU : BO->users()) {
+  if (!BO && !isa<GetElementPtrInst>(U))
+    return false;
----------------
jmolloy wrote:
> I'm not sure how adding GEP support here relates to negative values. Was this an accidentally added hunk?
Ｏｈ，　ｓｏｒｒｙ，　ｔｈｉｓ　ｉｓ　ｌｅｆｔ　ｏｖｅｒ　ｗｈｅｎ　Ｉ　ｓｐｌｉｔ　ｍｙ　ｐａｔｃｈ，　ｉｔ　ｉｓ　ｒｅｑｕｉｒｅ　ｆｏｒ　ｐｏｉｎｔｅｒ　ｉｎｄｕｃｔｉｏｎ　ｖａｒｉａｂｌｅ　ｔｈｏｕｇｈ，　ｂｕｔ　Ｉ　ｃａｎ　ｒｅｍｏｖｅ　ｉｔ　ｆｏｒ　ｎｏｗ．

Ｗｉｌｌ　ｆｉｘ　ｔｈｅ　ｒｅｓｔ，　ｔｈａｎｋｓ．``


Repository:
  rL LLVM

http://reviews.llvm.org/D10477