From 22fe45de11ed7afdf21400d2de3abd23f3a62800 Mon Sep 17 00:00:00 2001 From: Vladimir Marko Date: Wed, 18 Mar 2015 11:33:58 +0000 Subject: Quick: Eliminate check-cast guaranteed by instance-of. Eliminate check-cast if the result of an instance-of with the very same type on the same value is used to branch to the check-cast's block or a dominator of it. Note that there already exists a verifier-based elimination of check-cast but it excludes check-cast on interfaces. This new optimization works for interface types and, since it's GVN-based, it can better recognize when the same reference is used for instance-of and check-cast. Change-Id: Ib315199805099d1cb0534bb4a90dc51baa409685 --- compiler/dex/mir_graph.h | 1 + 1 file changed, 1 insertion(+) (limited to 'compiler/dex/mir_graph.h') diff --git a/compiler/dex/mir_graph.h b/compiler/dex/mir_graph.h index 9da39d151c..3298af1162 100644 --- a/compiler/dex/mir_graph.h +++ b/compiler/dex/mir_graph.h @@ -150,6 +150,7 @@ enum OatMethodAttributes { #define MIR_IGNORE_NULL_CHECK (1 << kMIRIgnoreNullCheck) #define MIR_IGNORE_RANGE_CHECK (1 << kMIRIgnoreRangeCheck) +#define MIR_IGNORE_CHECK_CAST (1 << kMIRIgnoreCheckCast) #define MIR_STORE_NON_NULL_VALUE (1 << kMIRStoreNonNullValue) #define MIR_CLASS_IS_INITIALIZED (1 << kMIRClassIsInitialized) #define MIR_CLASS_IS_IN_DEX_CACHE (1 << kMIRClassIsInDexCache) -- cgit v1.2.3