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Diffstat (limited to 'test/Transforms/IndVarSimplify/2012-07-17-lftr-undef.ll')
| -rw-r--r-- | test/Transforms/IndVarSimplify/2012-07-17-lftr-undef.ll | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/test/Transforms/IndVarSimplify/2012-07-17-lftr-undef.ll b/test/Transforms/IndVarSimplify/2012-07-17-lftr-undef.ll new file mode 100644 index 0000000000000..7c5f81896f162 --- /dev/null +++ b/test/Transforms/IndVarSimplify/2012-07-17-lftr-undef.ll @@ -0,0 +1,22 @@ +; RUN: opt < %s -indvars -S | FileCheck %s +; PR13371: indvars pass incorrectly substitutes 'undef' values +; +; LFTR should not user %undef as the loop counter. +; CHECK: @test +; CHECK-NOT: icmp{{.*}}undef +@.str3 = private constant [6 x i8] c"%lld\0A\00", align 1 +declare i32 @printf(i8* noalias nocapture, ...) nounwind +define i64 @test() nounwind { +func_start: + br label %block9 +block9: ; preds = %block9,%func_start + %undef = phi i64 [ %next_undef, %block9 ], [ undef, %func_start ] + %iter = phi i64 [ %next_iter, %block9 ], [ 1, %func_start ] + %next_iter = add nsw i64 %iter, 1 + %0 = tail call i32 (i8*, ...)* @printf(i8* noalias nocapture getelementptr inbounds ([6 x i8]* @.str3, i64 0, i64 0), i64 %next_iter, i64 %undef) + %next_undef = add nsw i64 %undef, 1 + %_tmp_3 = icmp slt i64 %next_iter, 100 + br i1 %_tmp_3, label %block9, label %exit +exit: ; preds = %block9 + ret i64 0 +} |