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; RUN: opt -passes=loop-versioning -S < %s | FileCheck %s
; Make sure all PHIs are properly updated in the exit block. Based on
; PR28037.
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
@x = external global [2 x [3 x [5 x i16]]]
; CHECK-LABEL: @phi_with_undef
define void @phi_with_undef() {
bb6.lr.ph: ; preds = %bb5.preheader
br label %bb6
bb6: ; preds = %bb6.lr.ph, %bb6
%_tmp1423 = phi i64 [ undef, %bb6.lr.ph ], [ %_tmp142, %bb6 ]
%_tmp123 = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 undef
%_tmp126 = getelementptr [3 x [5 x i16]], ptr %_tmp123, i16 0, i64 %_tmp1423
%_tmp129 = getelementptr [5 x i16], ptr %_tmp126, i16 0, i64 undef
%_tmp130 = load i16, ptr %_tmp129
store i16 undef, ptr getelementptr ([2 x [3 x [5 x i16]]], ptr @x, i64 0, i64 undef, i64 undef, i64 undef)
%_tmp142 = add i64 %_tmp1423, 1
br i1 false, label %bb6, label %loop.exit
loop.exit: ; preds = %bb6
%_tmp142.lcssa = phi i64 [ %_tmp142, %bb6 ]
%split = phi i16 [ undef, %bb6 ]
; CHECK: %split.ph = phi i16 [ undef, %bb6.lver.orig ]
; CHECK: %split.ph3 = phi i16 [ undef, %bb6 ]
; CHECK: %split = phi i16 [ %split.ph, %loop.exit.loopexit ], [ %split.ph3, %loop.exit.loopexit1 ]
br label %bb9
bb9: ; preds = %bb9.loopexit, %bb1
ret void
}
; CHECK-LABEL: @phi_with_non_loop_defined_value
define void @phi_with_non_loop_defined_value() {
bb6.lr.ph: ; preds = %bb5.preheader
%t = add i16 1, 1
br label %bb6
bb6: ; preds = %bb6.lr.ph, %bb6
%_tmp1423 = phi i64 [ undef, %bb6.lr.ph ], [ %_tmp142, %bb6 ]
%_tmp123 = getelementptr [2 x [3 x [5 x i16]]], ptr @x, i16 0, i64 undef
%_tmp126 = getelementptr [3 x [5 x i16]], ptr %_tmp123, i16 0, i64 %_tmp1423
%_tmp129 = getelementptr [5 x i16], ptr %_tmp126, i16 0, i64 undef
%_tmp130 = load i16, ptr %_tmp129
store i16 undef, ptr getelementptr ([2 x [3 x [5 x i16]]], ptr @x, i64 0, i64 undef, i64 undef, i64 undef)
%_tmp142 = add i64 %_tmp1423, 1
br i1 false, label %bb6, label %loop.exit
loop.exit: ; preds = %bb6
%_tmp142.lcssa = phi i64 [ %_tmp142, %bb6 ]
%split = phi i16 [ %t, %bb6 ]
; CHECK: %split.ph = phi i16 [ %t, %bb6.lver.orig ]
; CHECK: %split.ph3 = phi i16 [ %t, %bb6 ]
; CHECK: %split = phi i16 [ %split.ph, %loop.exit.loopexit ], [ %split.ph3, %loop.exit.loopexit1 ]
br label %bb9
bb9: ; preds = %bb9.loopexit, %bb1
ret void
}
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