1; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s 2; 3; Check whether %newval is identified as escaping value, even though it is used 4; in a phi that is in the region. Non-affine subregion case. 5; 6; CHECK-LABEL: subregion_entry.region_entering: 7; CHECK: %loop_carried.ph = phi float [ %newval.merge, %backedge ], [ undef, %entry ] 8; 9; CHECK-LABEL: polly.merge_new_and_old: 10; CHECK: %newval.merge = phi float [ %newval.final_reload, %polly.exiting ], [ %newval, %subregion_exit.region_exiting ] 11; 12; CHECK-LABEL: polly.start: 13; CHECK: store float %loop_carried.ph, float* %loop_carried.phiops 14; 15; CHECK-LABEL: polly.stmt.subregion_entry.entry: 16; CHECK: %loop_carried.phiops.reload = load float, float* %loop_carried.phiops 17; 18; CHECK-LABEL: polly.stmt.subregion_entry: 19; CHECK: %polly.loop_carried = phi float [ %loop_carried.phiops.reload, %polly.stmt.subregion_entry.entry ] 20; CHECK: %p_newval = fadd float %polly.loop_carried, 1.000000e+00 21; 22; CHECK-LABEL: polly.stmt.polly.merge_new_and_old.exit: 23; CHECK: %newval.final_reload = load float, float* %newval.s2a 24 25define void @func() { 26entry: 27 br label %subregion_entry 28 29subregion_entry: 30 %loop_carried = phi float [ undef, %entry ], [ %newval, %backedge ] 31 %indvar = phi i32 [ 1, %entry ], [ %indvar_next, %backedge ] 32 %newval = fadd float %loop_carried, 1.0 33 %cmp = fcmp ogt float undef, undef 34 br i1 %cmp, label %subregion_if, label %subregion_exit 35 36subregion_if: 37 br label %subregion_exit 38 39subregion_exit: 40 br i1 undef, label %if_then, label %if_else 41 42if_then: 43 br label %backedge 44 45if_else: 46 br label %backedge 47 48backedge: 49 %indvar_next = add nuw nsw i32 %indvar, 1 50 br i1 false, label %subregion_entry, label %exit 51 52exit: 53 ret void 54} 55