[llvm] Fixed Windows build warnings (PR #68978)
Nikita Kudriavtsev via llvm-commits
llvm-commits at lists.llvm.org
Fri Oct 20 13:51:46 PDT 2023
https://github.com/nikita-kud updated https://github.com/llvm/llvm-project/pull/68978
>From dbe31c884062e1f7193cc9165534156a114ab89e Mon Sep 17 00:00:00 2001
From: Nikita Kudriavtsev <nikita.kudriavtsev at intel.com>
Date: Tue, 4 Apr 2023 21:00:01 +0000
Subject: [PATCH] Fix compilation on Windows
---
llvm/include/llvm/Support/MathExtras.h | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/llvm/include/llvm/Support/MathExtras.h b/llvm/include/llvm/Support/MathExtras.h
index dc095941fdc8a9f..7278c4eb7695887 100644
--- a/llvm/include/llvm/Support/MathExtras.h
+++ b/llvm/include/llvm/Support/MathExtras.h
@@ -382,7 +382,10 @@ inline uint64_t alignTo(uint64_t Value, uint64_t Align) {
inline uint64_t alignToPowerOf2(uint64_t Value, uint64_t Align) {
assert(Align != 0 && (Align & (Align - 1)) == 0 &&
"Align must be a power of 2");
- return (Value + Align - 1) & -Align;
+ // Replace unary minus to avoid compilation error on Windows:
+ // "unary minus operator applied to unsigned type, result still unsigned"
+ uint64_t negAlign = (~Align) + 1;
+ return (Value + Align - 1) & negAlign;
}
/// If non-zero \p Skew is specified, the return value will be a minimal integer
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