[Mlir-commits] [llvm] [mlir] Add usub_cond and usub_sat operations to atomicrmw (PR #105568)

[Matt Arsenault]

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@@ -1562,6 +1564,8 @@ bool AtomicExpandImpl::isIdempotentRMW(AtomicRMWInst *RMWI) {
   case AtomicRMWInst::Sub:
   case AtomicRMWInst::Or:
   case AtomicRMWInst::Xor:
+  case AtomicRMWInst::USubCond:
+  case AtomicRMWInst::USubSat:
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arsenm wrote:

Missing tests for this (but this optimization is likely to be deleted soon anyway). Missing any new tests in test/Transforms/AtomicExpand 

https://github.com/llvm/llvm-project/pull/105568