[llvm] r350701 - [X86] Fix gcc7 -Wunused-but-set-variable warning. NFCI.

[Simon Pilgrim via llvm-commits]

Author: rksimon
Date: Wed Jan  9 03:18:49 2019
New Revision: 350701

URL: http://llvm.org/viewvc/llvm-project?rev=350701&view=rev
Log:
[X86] Fix gcc7 -Wunused-but-set-variable warning. NFCI.

Modified:
    llvm/trunk/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp

Modified: llvm/trunk/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp?rev=350701&r1=350700&r2=350701&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp (original)
+++ llvm/trunk/lib/Target/X86/MCTargetDesc/X86AsmBackend.cpp Wed Jan  9 03:18:49 2019
@@ -540,7 +540,6 @@ protected:
     unsigned InstrOffset = 0;
     unsigned StackAdjust = 0;
     unsigned StackSize = 0;
-    unsigned PrevStackSize = 0;
     unsigned NumDefCFAOffsets = 0;
 
     for (unsigned i = 0, e = Instrs.size(); i != e; ++i) {
@@ -588,7 +587,6 @@ protected:
         //  L0:
         //     .cfi_def_cfa_offset 80
         //
-        PrevStackSize = StackSize;
         StackSize = std::abs(Inst.getOffset()) / StackDivide;
         ++NumDefCFAOffsets;
         break;