[X86] Use assert instead of if and llvm_unreachable. NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@256420 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86RegisterInfo.cpp b/lib/Target/X86/X86RegisterInfo.cpp
index 85ed5859a832dab31e41531a5f92855e3b4f9390..b0ea7367dd3674c629970956e78067d9b5ac1775 100644 (file)
--- a/lib/Target/X86/X86RegisterInfo.cpp
+++ b/lib/Target/X86/X86RegisterInfo.cpp
@@ -807,8 +807,7 @@ unsigned getX86SubSuperRegisterOrZero(unsigned Reg, MVT::SimpleValueType VT,
 unsigned getX86SubSuperRegister(unsigned Reg, MVT::SimpleValueType VT,
                                 bool High) {
   unsigned Res = getX86SubSuperRegisterOrZero(Reg, VT, High);
 unsigned getX86SubSuperRegister(unsigned Reg, MVT::SimpleValueType VT,
                                 bool High) {
   unsigned Res = getX86SubSuperRegisterOrZero(Reg, VT, High);

-  if (Res == 0)
-    llvm_unreachable("Unexpected register or VT");
+  assert(Res != 0 && "Unexpected register or VT");

   return Res;
 }
 
   return Res;
 }