Chad Rosier 22b34cce4d GEPs with all zero indices are trivially coalesced by fast-isel. For example,
%arrayidx135 = getelementptr inbounds [4 x [4 x [4 x [4 x i32]]]]* %M0, i32 0, i64 0
%arrayidx136 = getelementptr inbounds [4 x [4 x [4 x i32]]]* %arrayidx135, i32 0, i64 %idxprom134

Prior to this commit, the GEP instruction that defines %arrayidx136 thought that 
%arrayidx135 was a trivial kill.  The GEP that defines %arrayidx135 doesn't 
generate any code and thus %M0 gets folded into the second GEP.  Thus, we need
to look through GEPs with all zero indices.
rdar://10443319

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144730 91177308-0d34-0410-b5e6-96231b3b80d8
2011-11-15 23:34:05 +00:00
2011-11-15 19:12:09 +00:00
2011-06-12 15:26:54 +00:00
2007-07-13 09:48:29 +00:00
2011-11-10 20:39:51 +00:00

Low Level Virtual Machine (LLVM)
================================

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