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; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s
;
; llvm.org/PR25439
; Scalar reloads in the generated entering block were not recognized as
; dominating the subregion blocks when there were multiple entering nodes. This
; resulted in values defined in there (here: %cond used in subregionB_entry) not
; being copied. We check whether it is reusing the reloaded scalar.
;
; CHECK-LABEL: polly.stmt.subregionB_entry.exit:
; CHECK: store i1 %polly.cond, ptr %cond.s2a
;
; CHECK-LABEL: polly.stmt.subregionB_entry.entry:
; CHECK: %cond.s2a.reload = load i1, ptr %cond.s2a
;
; CHECK-LABEL: polly.stmt.subregionB_entry:
; CHECK: br i1 %cond.s2a.reload
define void @func(ptr %A) {
entry:
br label %subregionA_entry
subregionA_entry:
%cond = phi i1 [ false, %entry ], [ true, %subregionB_exit ]
br i1 %cond, label %subregionA_if, label %subregionA_else
subregionA_if:
br label %subregionB_entry
subregionA_else:
br label %subregionB_entry
subregionB_entry:
store i32 0, ptr %A
br i1 %cond, label %subregionB_if, label %subregionB_exit
subregionB_if:
br label %subregionB_exit
subregionB_exit:
br i1 false, label %subregionA_entry, label %return
return:
ret void
}
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