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-rw-r--r--test/Transforms/JumpThreading/branch-no-const.ll21
1 files changed, 21 insertions, 0 deletions
diff --git a/test/Transforms/JumpThreading/branch-no-const.ll b/test/Transforms/JumpThreading/branch-no-const.ll
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+++ b/test/Transforms/JumpThreading/branch-no-const.ll
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+; RUN: opt < %s -jump-threading -S | not grep phi
+
+declare i8 @mcguffin()
+
+define i32 @test(i1 %foo, i8 %b) {
+entry:
+ %a = call i8 @mcguffin()
+ br i1 %foo, label %bb1, label %bb2
+bb1:
+ br label %jt
+bb2:
+ br label %jt
+jt:
+ %x = phi i8 [%a, %bb1], [%b, %bb2]
+ %A = icmp eq i8 %x, %a
+ br i1 %A, label %rt, label %rf
+rt:
+ ret i32 7
+rf:
+ ret i32 8
+}