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-rw-r--r--test/CodeGen/X86/shrink-compare.ll23
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/shrink-compare.ll b/test/CodeGen/X86/shrink-compare.ll
index 83793f0..30a5b62 100644
--- a/test/CodeGen/X86/shrink-compare.ll
+++ b/test/CodeGen/X86/shrink-compare.ll
@@ -66,3 +66,26 @@ lor.end: ; preds = %lor.rhs, %entry
%p = phi i1 [ true, %entry ], [ %tobool1, %lor.rhs ]
ret i1 %p
}
+
+@x = global { i8, i8, i8, i8, i8, i8, i8, i8 } { i8 1, i8 0, i8 0, i8 0, i8 1, i8 0, i8 0, i8 1 }, align 4
+
+; PR16551
+define void @test5(i32 %X) nounwind {
+entry:
+ %bf.load = load i56* bitcast ({ i8, i8, i8, i8, i8, i8, i8, i8 }* @x to i56*), align 4
+ %bf.lshr = lshr i56 %bf.load, 32
+ %bf.cast = trunc i56 %bf.lshr to i32
+ %cmp = icmp ne i32 %bf.cast, 1
+ br i1 %cmp, label %if.then, label %if.end
+
+if.then:
+ tail call void @bar() nounwind
+ br label %if.end
+
+if.end:
+ ret void
+
+; CHECK: test5:
+; CHECK-NOT: cmpl $1,{{.*}}x+4
+; CHECK: ret
+}