[Mlir-commits] [mlir] [mlir][vector] Add support for vector.maskedstore sub-type emulation. (PR #73871)

[Diego Caballero]

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@@ -32,6 +32,78 @@ using namespace mlir;
 #define DBGSNL() (llvm::dbgs() << "\n")
 #define LDBG(X) LLVM_DEBUG(DBGS() << X << "\n")
 
+/// Returns a compressed mask. The mask value is set only if any mask is present
+/// in the the scale range. E.g., if `scale` equals to 2, the following mask:
+///
+///   %mask = [1, 1, 1, 0, 0, 0]
+///
+/// will return the following new compressed mask:
+///
+///   %mask = [1, 1, 0]
+static FailureOr<Operation *> getCompressedMaskOp(OpBuilder &rewriter,
+                                                  Location loc, Value mask,
+                                                  int origElements, int scale) {
+  auto numElements = (origElements + scale - 1) / scale;
+
+  auto maskOp = mask.getDefiningOp();
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dcaballe wrote:

nit: spell out `auto`

https://github.com/llvm/llvm-project/pull/73871