[llvm] r175459 - [fast-isel] Remove an invalid assert.

[Chad Rosier]

Author: mcrosier
Date: Mon Feb 18 15:46:28 2013
New Revision: 175459

URL: http://llvm.org/viewvc/llvm-project?rev=175459&view=rev
Log:
[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

Modified:
    llvm/trunk/lib/Target/ARM/ARMFastISel.cpp
    llvm/trunk/test/CodeGen/ARM/fast-isel-intrinsic.ll

Modified: llvm/trunk/lib/Target/ARM/ARMFastISel.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMFastISel.cpp?rev=175459&r1=175458&r2=175459&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMFastISel.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMFastISel.cpp Mon Feb 18 15:46:28 2013
@@ -2458,7 +2458,6 @@ bool ARMFastISel::ARMTryEmitSmallMemCpy(
       if (Len >= 2 && Alignment == 2)
         VT = MVT::i16;
       else {
-        assert (Alignment == 1 && "Expected an alignment of 1!");
         VT = MVT::i8;
       }
     }

Modified: llvm/trunk/test/CodeGen/ARM/fast-isel-intrinsic.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/ARM/fast-isel-intrinsic.ll?rev=175459&r1=175458&r2=175459&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/ARM/fast-isel-intrinsic.ll (original)
+++ llvm/trunk/test/CodeGen/ARM/fast-isel-intrinsic.ll Mon Feb 18 15:46:28 2013
@@ -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
+}