From 831dab360fdb1a854a396ba37a28b30f35c1adaf Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor@mac.com>
Date: Tue, 19 Jun 2007 05:55:01 +0000
Subject: [PATCH] Testcase for instances where a constant only occurs as an
 operand to a phi node.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37653 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../GVNPRE/2007-06-18-ConstantInPhi.ll        | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll

diff --git a/test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll b/test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll
new file mode 100644
index 00000000000..b4cb5178c4c
--- /dev/null
+++ b/test/Transforms/GVNPRE/2007-06-18-ConstantInPhi.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | opt -gvnpre | llvm-dis
+
+define void @vorbis_lsp_to_curve() {
+entry:
+	br i1 false, label %bb.nph, label %return
+
+bb.nph:		; preds = %entry
+	br label %bb34
+
+bb34:		; preds = %bb34, %bb.nph
+	%p.1 = phi float [ 0x3FE6A09E60000000, %bb.nph ], [ %tmp48, %bb34 ]		; <float> [#uses=1]
+	%tmp44 = load float* null		; <float> [#uses=1]
+	%tmp46 = sub float %tmp44, 0.000000e+00		; <float> [#uses=1]
+	%tmp48 = mul float %tmp46, %p.1		; <float> [#uses=1]
+	br i1 false, label %bb57, label %bb34
+
+bb57:		; preds = %bb34
+	ret void
+
+return:		; preds = %entry
+	ret void
+}