[llvm] d9af50e - [Transforms] getOrEnforceKnownAlignment - fix MSVC result of 32-bit shift implicitly converted to 64 bits warning. NFCI

[Simon Pilgrim via llvm-commits]

Author: Simon Pilgrim
Date: 2020-04-21T18:32:12+01:00
New Revision: d9af50efbc5f74fac94384571f9315a452dcfad0

URL: https://github.com/llvm/llvm-project/commit/d9af50efbc5f74fac94384571f9315a452dcfad0
DIFF: https://github.com/llvm/llvm-project/commit/d9af50efbc5f74fac94384571f9315a452dcfad0.diff

LOG: [Transforms] getOrEnforceKnownAlignment - fix MSVC result of 32-bit shift implicitly converted to 64 bits warning. NFCI

We don't overflow here so we can use a U64 shift directly.

Added: 
    

Modified: 
    llvm/lib/Transforms/Utils/Local.cpp

Removed: 
    


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diff  --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
index 3e4f484f8ac4..b87cb0009113 100644
--- a/llvm/lib/Transforms/Utils/Local.cpp
+++ b/llvm/lib/Transforms/Utils/Local.cpp
@@ -1217,7 +1217,7 @@ Align llvm::getOrEnforceKnownAlignment(Value *V, MaybeAlign PrefAlign,
   // LLVM doesn't support alignments larger than (1 << MaxAlignmentExponent).
   TrailZ = std::min(TrailZ, +Value::MaxAlignmentExponent);
 
-  Align Alignment = Align(1u << std::min(Known.getBitWidth() - 1, TrailZ));
+  Align Alignment = Align(1ull << std::min(Known.getBitWidth() - 1, TrailZ));
 
   if (PrefAlign && *PrefAlign > Alignment)
     Alignment = enforceKnownAlignment(V, Alignment, *PrefAlign, DL);