BumpPtrAllocator: remove 'no slabs allocated yet' check

We already handle the no-slabs case when checking whether the current slab
is large enough: if no slabs have been allocated, CurPtr and End are both 0.
alignPtr(0), will still be 0, and so "if (Ptr + Size <= End)" fails.

Differential Revision: http://reviews.llvm.org/D4943

llvm-svn: 215841

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/unittests/Support/AllocatorTest.cpp b/llvm/unittests/Support/AllocatorTest.cpp
index 0fc84c7613f..dc92ff9ef03 100644
--- a/llvm/unittests/Support/AllocatorTest.cpp
+++ b/llvm/unittests/Support/AllocatorTest.cpp
@@ -112,7 +112,7 @@ TEST(AllocatorTest, TestSmallSlabSize) {
   BumpPtrAllocator Alloc;
 
   Alloc.Allocate(8000, 0);
-  EXPECT_EQ(2U, Alloc.GetNumSlabs());
+  EXPECT_EQ(1U, Alloc.GetNumSlabs());
 }
 
 // Mock slab allocator that returns slabs aligned on 4096 bytes.  There is no