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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt -S -passes=instcombine < %s | FileCheck %s3 4target triple = "aarch64-unknown-linux-gnu"5 6; Test that rdffr is substituted with predicated form which enables ptest optimization later.7define <vscale x 16 x i1> @predicate_rdffr() #0 {8; CHECK-LABEL: @predicate_rdffr(9; CHECK-NEXT: [[OUT:%.*]] = call <vscale x 16 x i1> @llvm.aarch64.sve.rdffr.z(<vscale x 16 x i1> splat (i1 true))10; CHECK-NEXT: ret <vscale x 16 x i1> [[OUT]]11;12 %out = call <vscale x 16 x i1> @llvm.aarch64.sve.rdffr()13 ret <vscale x 16 x i1> %out14}15 16declare <vscale x 16 x i1> @llvm.aarch64.sve.rdffr()17 18attributes #0 = { "target-features"="+sve" }19