Fix off-by-one error in bucket sort.

The bad sorting caused a misaligned basic block when building 176.vpr in
ARM mode.

<rdar://problem/10594653>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146767 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/ARM/ARMConstantIslandPass.cpp b/lib/Target/ARM/ARMConstantIslandPass.cpp
index 7cdce3d..2a7721b 100644
--- a/lib/Target/ARM/ARMConstantIslandPass.cpp
+++ b/lib/Target/ARM/ARMConstantIslandPass.cpp
@@ -537,7 +537,7 @@
 
     // Ensure that future entries with higher alignment get inserted before
     // CPEMI. This is bucket sort with iterators.
-    for (unsigned a = LogAlign + 1; a < MaxAlign; ++a)
+    for (unsigned a = LogAlign + 1; a <= MaxAlign; ++a)
       if (InsPoint[a] == InsAt)
         InsPoint[a] = CPEMI;