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As with r70333, give the primary induction variable a use so

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that it can't be trivially eliminated.

llvm-svn: 70334
This commit is contained in:
Dan Gohman 2009-04-28 22:05:13 +00:00
parent 5bb06cda1e
commit 346c77f79d
1 changed files with 2 additions and 1 deletions
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3
test/Transforms/LoopSimplify/single-backedge.ll
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@ -8,7 +8,8 @@ define i32 @test(i1 %C) {
; <label>:0
br label %Loop
Loop: ; preds = %BE2, %BE1, %0
%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=1]
%IV = phi i32 [ 1, %0 ], [ %IV2, %BE1 ], [ %IV2, %BE2 ] ; <i32> [#uses=2]
store i32 %IV, i32* null
%IV2 = add i32 %IV, 2 ; <i32> [#uses=2]
br i1 %C, label %BE1, label %BE2
BE1: ; preds = %Loop