================
@@ -1499,6 +1499,48 @@ mlir::LogicalResult
CIRToLLVMConstantOpLowering::matchAndRewrite(
return mlir::success();
}
+static uint64_t getTypeSize(mlir::Type type, mlir::Operation &op) {
+ mlir::DataLayout layout(op.getParentOfType<mlir::ModuleOp>());
+ // For LLVM purposes we treat void as u8.
+ if (isa<cir::VoidType>(type))
+ type = cir::IntType::get(type.getContext(), 8, /*isSigned=*/false);
+ return llvm::divideCeil(layout.getTypeSizeInBits(type), 8);
+}
+
+mlir::LogicalResult CIRToLLVMPtrDiffOpLowering::matchAndRewrite(
+ cir::PtrDiffOp op, OpAdaptor adaptor,
+ mlir::ConversionPatternRewriter &rewriter) const {
+ auto dstTy = mlir::cast<cir::IntType>(op.getType());
+ auto llvmDstTy = getTypeConverter()->convertType(dstTy);
+
+ auto lhs = rewriter.create<mlir::LLVM::PtrToIntOp>(op.getLoc(), llvmDstTy,
----------------
andykaylor wrote:
This use of `auto` and those on the next two lines are fine because the type is
the template argument.
https://github.com/llvm/llvm-project/pull/163306
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