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; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
;
; Check whether %newval is identified as escaping value, even though it is used
; in a phi that is in the region. Non-affine subregion case.
;
; CHECK-LABEL: subregion_entry.region_entering:
; CHECK: %loop_carried.ph = phi float [ %newval.merge, %backedge ], [ undef, %entry ]
;
; CHECK-LABEL: polly.merge_new_and_old:
; CHECK: %newval.merge = phi float [ %newval.final_reload, %polly.exiting ], [ %newval, %subregion_exit.region_exiting ]
;
; CHECK-LABEL: polly.start:
; CHECK: store float %loop_carried.ph, ptr %loop_carried.phiops
;
; CHECK-LABEL: polly.stmt.subregion_entry.entry:
; CHECK: %loop_carried.phiops.reload = load float, ptr %loop_carried.phiops
;
; CHECK-LABEL: polly.stmt.subregion_entry:
; CHECK: %polly.loop_carried = phi float [ %loop_carried.phiops.reload, %polly.stmt.subregion_entry.entry ]
; CHECK: %p_newval = fadd float %polly.loop_carried, 1.000000e+00
;
; CHECK-LABEL: polly.stmt.polly.merge_new_and_old.exit:
; CHECK: %newval.final_reload = load float, ptr %newval.s2a
define void @func() {
entry:
br label %subregion_entry
subregion_entry:
%loop_carried = phi float [ undef, %entry ], [ %newval, %backedge ]
%indvar = phi i32 [ 1, %entry ], [ %indvar_next, %backedge ]
%newval = fadd float %loop_carried, 1.0
%cmp = fcmp ogt float undef, undef
br i1 %cmp, label %subregion_if, label %subregion_exit
subregion_if:
br label %subregion_exit
subregion_exit:
br i1 undef, label %if_then, label %if_else
if_then:
br label %backedge
if_else:
br label %backedge
backedge:
%indvar_next = add nuw nsw i32 %indvar, 1
br i1 false, label %subregion_entry, label %exit
exit:
ret void
}
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