From: Chad Rosier <mcrosier@codeaurora.org>
Date: Mon, 14 Dec 2015 14:44:06 +0000 (+0000)
Subject: [PPC] Early exit loop. NFC.
X-Git-Url: http://plrg.eecs.uci.edu/git/?p=oota-llvm.git;a=commitdiff_plain;h=3fd61c3bf5ae22f85ab6682fcb29a452201cf189

[PPC] Early exit loop. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@255497 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/PowerPC/PPCISelLowering.cpp b/lib/Target/PowerPC/PPCISelLowering.cpp
index 176a8b3ea59..242c1ea3309 100644
--- a/lib/Target/PowerPC/PPCISelLowering.cpp
+++ b/lib/Target/PowerPC/PPCISelLowering.cpp
@@ -10801,8 +10801,11 @@ unsigned PPCTargetLowering::getPrefLoopAlignment(MachineLoop *ML) const {
     // boundary so that the entire loop fits in one instruction-cache line.
     uint64_t LoopSize = 0;
     for (auto I = ML->block_begin(), IE = ML->block_end(); I != IE; ++I)
-      for (auto J = (*I)->begin(), JE = (*I)->end(); J != JE; ++J)
+      for (auto J = (*I)->begin(), JE = (*I)->end(); J != JE; ++J) {
         LoopSize += TII->GetInstSizeInBytes(J);
+        if (LoopSize > 32)
+          break;
+      }
 
     if (LoopSize > 16 && LoopSize <= 32)
       return 5;