[fast-isel] Remove an invalid assert.

If the memcpy has an odd length with an alignment of 2, this would incorrectly
assert on the last 1 byte copy.
rdar://13202135

llvm-svn: 175459

diff --git a/llvm/lib/Target/ARM/ARMFastISel.cpp b/llvm/lib/Target/ARM/ARMFastISel.cpp
index 022fe97..b545dbc 100644 (file)
--- a/llvm/lib/Target/ARM/ARMFastISel.cpp
+++ b/llvm/lib/Target/ARM/ARMFastISel.cpp
@@ -2458,7 +2458,6 @@ bool ARMFastISel::ARMTryEmitSmallMemCpy(Address Dest, Address Src,
       if (Len >= 2 && Alignment == 2)
         VT = MVT::i16;
       else {
-        assert (Alignment == 1 && "Expected an alignment of 1!");
         VT = MVT::i8;
       }
     }

diff --git a/llvm/test/CodeGen/ARM/fast-isel-intrinsic.ll b/llvm/test/CodeGen/ARM/fast-isel-intrinsic.ll
index 7d38cc2..3128f5e 100644 (file)
--- a/llvm/test/CodeGen/ARM/fast-isel-intrinsic.ll
+++ b/llvm/test/CodeGen/ARM/fast-isel-intrinsic.ll
@@ -231,3 +231,10 @@ define void @t6() nounwind ssp {
   call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 10, i32 1, i1 false)
   ret void
 }
+
+rdar://13202135
+define void @t7() nounwind ssp {
+; Just make sure this doesn't assert when we have an odd length and an alignment of 2.
+  call void @llvm.memcpy.p0i8.p0i8.i32(i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 4), i8* getelementptr inbounds ([60 x i8]* @temp, i32 0, i32 16), i32 3, i32 2, i1 false)
+  ret void
+}