From: Chris Lattner <sabre@nondot.org>
Date: Thu, 27 Apr 2006 21:13:58 +0000 (+0000)
Subject: This should turn into one vector shuffle instruction.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=011ec7f29cb0162b77012e12a0391077a5f74d2d;p=oota-llvm.git

This should turn into one vector shuffle instruction.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27996 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/test/Transforms/InstCombine/vec_insert_to_shuffle.ll b/test/Transforms/InstCombine/vec_insert_to_shuffle.ll
new file mode 100644
index 00000000000..03792036918
--- /dev/null
+++ b/test/Transforms/InstCombine/vec_insert_to_shuffle.ll
@@ -0,0 +1,14 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep shufflevec | wc -l | grep 1 &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep insertelement &&
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep extractelement
+
+<4 x float> %test(<4 x float> %tmp, <4 x float> %tmp1) {
+	%tmp4 = extractelement <4 x float> %tmp, uint 1		; <float> [#uses=1]
+	%tmp2 = extractelement <4 x float> %tmp, uint 3		; <float> [#uses=1]
+	%tmp1 = extractelement <4 x float> %tmp1, uint 0		; <float> [#uses=1]
+	%tmp128 = insertelement <4 x float> undef, float %tmp4, uint 0		; <<4 x float>> [#uses=1]
+	%tmp130 = insertelement <4 x float> %tmp128, float undef, uint 1		; <<4 x float>> [#uses=1]
+	%tmp132 = insertelement <4 x float> %tmp130, float %tmp2, uint 2		; <<4 x float>> [#uses=1]
+	%tmp134 = insertelement <4 x float> %tmp132, float %tmp1, uint 3		; <<4 x float>> [#uses=1]
+	ret <4 x float> %tmp134
+}