[llvm] [clang-tools-extra] [clang] [X86] Use plain load/store instead of cmpxchg16b for atomics with AVX (PR #74275)

https://github.com/arsenm approved this pull request. I don't know anything about x86 but this seems plausible https://github.com/llvm/llvm-project/pull/74275 ___ cfe-commits mailing list cfe-commits@lists.llvm.org

[llvm] [clang-tools-extra] [clang] [X86] Use plain load/store instead of cmpxchg16b for atomics with AVX (PR #74275)

https://github.com/jyknight updated https://github.com/llvm/llvm-project/pull/74275 >From 7baffd6d1f4254b1bd725ddc883a360d79267435 Mon Sep 17 00:00:00 2001 From: James Y Knight Date: Sat, 2 Dec 2023 23:05:26 -0500 Subject: [PATCH 1/3] [X86] Use plain load/store instead of cmpxchg16b for

[llvm] [clang-tools-extra] [clang] [X86] Use plain load/store instead of cmpxchg16b for atomics with AVX (PR #74275)

@@ -30095,12 +30102,16 @@ TargetLoweringBase::AtomicExpansionKind X86TargetLowering::shouldExpandAtomicStoreInIR(StoreInst *SI) const { Type *MemType = SI->getValueOperand()->getType(); - bool NoImplicitFloatOps = -