diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index eb3f0350846..8ff00194b25 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -20464,7 +20464,7 @@ X86TargetLowering::lowerIdempotentRMWIntoFencedLoad(AtomicRMWInst *AI) const { // r1 = r2 = 0 is impossible, but becomes possible if the idempotent rmw is // lowered to just a load without a fence. A mfence flushes the store buffer, // making the optimization clearly correct. - // FIXME: it is required if isAtLeastRelease(Order) but it is not clear + // FIXME: it is required if isReleaseOrStronger(Order) but it is not clear // otherwise, we might be able to be more aggressive on relaxed idempotent // rmw. In practice, they do not look useful, so we don't try to be // especially clever. @@ -20503,7 +20503,8 @@ static SDValue LowerATOMIC_FENCE(SDValue Op, const X86Subtarget &Subtarget, // The only fence that needs an instruction is a sequentially-consistent // cross-thread fence. - if (FenceOrdering == SequentiallyConsistent && FenceScope == CrossThread) { + if (FenceOrdering == AtomicOrdering::SequentiallyConsistent && + FenceScope == CrossThread) { if (Subtarget.hasMFence()) return DAG.getNode(X86ISD::MFENCE, dl, MVT::Other, Op.getOperand(0)); @@ -20986,7 +20987,8 @@ static SDValue LowerATOMIC_STORE(SDValue Op, SelectionDAG &DAG) { // FIXME: On 32-bit, store -> fist or movq would be more efficient // (The only way to get a 16-byte store is cmpxchg16b) // FIXME: 16-byte ATOMIC_SWAP isn't actually hooked up at the moment. - if (cast<AtomicSDNode>(Node)->getOrdering() == SequentiallyConsistent || + if (cast<AtomicSDNode>(Node)->getOrdering() == + AtomicOrdering::SequentiallyConsistent || !DAG.getTargetLoweringInfo().isTypeLegal(VT)) { SDValue Swap = DAG.getAtomic(ISD::ATOMIC_SWAP, dl, cast<AtomicSDNode>(Node)->getMemoryVT(), |
