From ccf1e847791a1d4dad5108e4147303440e85b8b1 Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Fri, 23 Oct 2009 06:57:37 +0000
Subject: teach libanalysis to simplify vector loads with bitcast sources. 
 This implements something out of Target/README.txt producing:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	LCPI1_0, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

instead of:

_foo:                                                       ## @foo
	movl	4(%esp), %eax
	movapd	_b, %xmm0
	mulpd	LCPI1_0, %xmm0
	addpd	_a, %xmm0
	movapd	%xmm0, (%eax)
	ret	$4

llvm-svn: 84942
---
 llvm/test/Transforms/ConstProp/loads.ll | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'llvm/test')

diff --git a/llvm/test/Transforms/ConstProp/loads.ll b/llvm/test/Transforms/ConstProp/loads.ll
index 3096ed347cb..f3e7f6a4b7b 100644
--- a/llvm/test/Transforms/ConstProp/loads.ll
+++ b/llvm/test/Transforms/ConstProp/loads.ll
@@ -77,3 +77,13 @@ define i128 @test9() {
 ; @test9
 ; CHECK: ret i128 112312312
 }
+
+; vector load.
+define <2 x i64> @test10() {
+  %r = load <2 x i64>* bitcast({i64, i64}* @test3 to <2 x i64>*)
+  ret <2 x i64> %r
+
+; @test10
+; CHECK: ret <2 x i64> <i64 112312312, i64 0>
+}
+
-- 
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