[llvm] 1ee6559 - [ASAN] NFC: Remove redundant variable

[Vitaly Buka via llvm-commits]

Author: Enna1
Date: 2021-07-27T12:02:37-07:00
New Revision: 1ee6559ef698301eeb220126937b563858999d92

URL: https://github.com/llvm/llvm-project/commit/1ee6559ef698301eeb220126937b563858999d92
DIFF: https://github.com/llvm/llvm-project/commit/1ee6559ef698301eeb220126937b563858999d92.diff

LOG: [ASAN] NFC: Remove redundant variable

`StackAlignment` has only one use: `StackAlignment = std::max(StackAlignment, AI.getAlignment());` So it is redundant.

Reviewed By: vitalybuka, MTC

Differential Revision: https://reviews.llvm.org/D106741

Added: 
    

Modified: 
    llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
index 0f797ec13ca3a..0d4ca0bcecfb2 100644
--- a/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/AddressSanitizer.cpp
@@ -932,7 +932,6 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
   SmallVector<AllocaInst *, 16> AllocaVec;
   SmallVector<AllocaInst *, 16> StaticAllocasToMoveUp;
   SmallVector<Instruction *, 8> RetVec;
-  unsigned StackAlignment;
 
   FunctionCallee AsanStackMallocFunc[kMaxAsanStackMallocSizeClass + 1],
       AsanStackFreeFunc[kMaxAsanStackMallocSizeClass + 1];
@@ -964,7 +963,6 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
       : F(F), ASan(ASan), DIB(*F.getParent(), /*AllowUnresolved*/ false),
         C(ASan.C), IntptrTy(ASan.IntptrTy),
         IntptrPtrTy(PointerType::get(IntptrTy, 0)), Mapping(ASan.Mapping),
-        StackAlignment(1 << Mapping.Scale),
         PoisonStack(ClStack &&
                     !Triple(F.getParent()->getTargetTriple()).isAMDGPU()) {}
 
@@ -1088,7 +1086,6 @@ struct FunctionStackPoisoner : public InstVisitor<FunctionStackPoisoner> {
       return;
     }
 
-    StackAlignment = std::max(StackAlignment, AI.getAlignment());
     if (!AI.isStaticAlloca())
       DynamicAllocaVec.push_back(&AI);
     else