Programming Languages Research Group: Git

author	Pawel Bylica <chfast@gmail.com>
	Mon, 22 Jun 2015 15:58:11 +0000 (15:58 +0000)
committer	Pawel Bylica <chfast@gmail.com>
	Mon, 22 Jun 2015 15:58:11 +0000 (15:58 +0000)
commit	39befc6ca87809f13cf33bb6aec5ddc36c560d92
tree	0ed5f37678659b44d9914634c2d6915c7d5859f6	tree \| snapshot
parent	0ed63077a22dc1e766fcd5ce429f146310c33038	commit \| diff

Fix shl folding in DAG combiner.

Summary: The code responsible for shl folding in the DAGCombiner was assuming incorrectly that all constants are less than 64 bits. This patch simply changes the way values are compared.

Test Plan: A regression test included.

Reviewers: andreadb

Reviewed By: andreadb

Subscribers: andreadb, test, llvm-commits

Differential Revision: http://reviews.llvm.org/D10602

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240291 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/SelectionDAG/DAGCombiner.cpp		diff \| blob \| history
test/CodeGen/X86/fold-vector-shl-crash.ll	[new file with mode: 0644]	blob