================
@@ -831,6 +831,69 @@ static cir::VectorType getNeonType(CIRGenFunction *cgf,
NeonTypeFlags typeFlags,
llvm_unreachable("Unknown vector element type!");
}
+// Get integer from a mlir::Value that is an int constant or a constant op.
+static int64_t getIntValueFromConstOp(mlir::Value val) {
+ return val.getDefiningOp<cir::ConstantOp>().getIntValue().getSExtValue();
+}
+
+// Build a constant shift amount vector of `vecTy` to shift a vector
+// Here `shitfVal` is a constant integer that will be splated into a
+// a const vector of `vecTy` which is the return of this function
+static mlir::Value emitNeonShiftVector(CIRGenBuilderTy &builder,
+ mlir::Value shiftVal,
+ cir::VectorType vecTy,
+ mlir::Location loc, bool neg) {
+ int shiftAmt = getIntValueFromConstOp(shiftVal);
+ if (neg)
+ shiftAmt = -shiftAmt;
----------------
banach-space wrote:
Looks like `neg` can be skipped entirely in this PR.
https://github.com/llvm/llvm-project/pull/186693
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