[llvm] r326167 - [X86] Replace an impossible if condition with an assert.

[Craig Topper via llvm-commits]

Author: ctopper
Date: Mon Feb 26 19:50:00 2018
New Revision: 326167

URL: http://llvm.org/viewvc/llvm-project?rev=326167&view=rev
Log:
[X86] Replace an impossible if condition with an assert.

Modified:
    llvm/trunk/lib/Target/X86/X86ISelLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=326167&r1=326166&r2=326167&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Mon Feb 26 19:50:00 2018
@@ -16903,8 +16903,7 @@ SDValue X86TargetLowering::LowerTRUNCATE
   }
 
   // Handle truncation of V256 to V128 using shuffles.
-  if (!VT.is128BitVector() || !InVT.is256BitVector())
-    return SDValue();
+  assert(VT.is128BitVector() && InVT.is256BitVector() && "Unexpected types!");
 
   assert(Subtarget.hasFp256() && "256-bit vector without AVX!");