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-rw-r--r--test/CodeGen/PowerPC/vsx-self-copy.ll27
1 files changed, 27 insertions, 0 deletions
diff --git a/test/CodeGen/PowerPC/vsx-self-copy.ll b/test/CodeGen/PowerPC/vsx-self-copy.ll
new file mode 100644
index 0000000000..23615ca10c
--- /dev/null
+++ b/test/CodeGen/PowerPC/vsx-self-copy.ll
@@ -0,0 +1,27 @@
+; RUN: llc -mcpu=pwr7 -mattr=+vsx < %s | FileCheck %s
+target datalayout = "E-m:e-i64:64-n32:64"
+target triple = "powerpc64-unknown-linux-gnu"
+
+define double @takFP(double %x, double %y, double %z) #0 {
+entry:
+ br i1 undef, label %if.then, label %return
+
+if.then: ; preds = %if.then, %entry
+ %x.tr16 = phi double [ %call, %if.then ], [ %x, %entry ]
+ %call = tail call double @takFP(double undef, double undef, double undef)
+ %call4 = tail call double @takFP(double undef, double %x.tr16, double undef)
+ %cmp = fcmp olt double undef, %call
+ br i1 %cmp, label %if.then, label %return
+
+return: ; preds = %if.then, %entry
+ %z.tr.lcssa = phi double [ %z, %entry ], [ %call4, %if.then ]
+ ret double %z.tr.lcssa
+
+; CHECK: @takFP
+; CHECK-NOT: xxlor 0, 0, 0
+; CHECK: blr
+}
+
+attributes #0 = { nounwind readnone }
+attributes #1 = { nounwind }
+