Chandler Carruth 888ee76367 [SROA] Make the computation of adjusted pointers not leak GEP ... instructions. I noticed this when working on dialing up how aggressively we can pre-split loads and stores. My test case wasn't passing because dead GEPs into the allocas persisted when they were built by this routine. This isn't terribly harmful, we still rewrote and promoted the alloca and I can't conceive of how to cause this to happen in a case where we will keep the exact same alloca but rewrite and promote the uses of it. If that ever happened, we'd get an assert out of mem2reg. So I don't have a direct test case yet, but the subsequent commit's test case wouldn't pass without this. There are other problems fixed by this patch that I spotted purely by inspection such as the fact that getAdjustedPtr could have actually deleted dead base pointers. I don't know how to get a base pointer to go into getAdjustedPtr today, so I think this bug could never have manifested (and I certainly can't write a test case for it) but, it wasn't the intent of the code. The code really just wanted to GC the new instructions built. That can be done more directly by comparing with the base pointer which is the only non-new instruction that this code can return. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225073 91177308-0d34-0410-b5e6-96231b3b80d8		2015-01-02 02:47:38 +00:00
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Hello
InstCombine	InstCombine: fsub nsz 0, X ==> fsub nsz -0.0, X	2014-12-31 22:14:05 +00:00
Instrumentation	[asan] change _sanitizer_cov_module_init to accept int* instead of int**	2014-12-30 19:29:28 +00:00
IPO	Sink store based on alias analysis	2014-12-15 14:09:53 +00:00
ObjCARC	IR: Split Metadata from Value	2014-12-09 18:38:53 +00:00
Scalar	[SROA] Make the computation of adjusted pointers not leak GEP	2015-01-02 02:47:38 +00:00
Utils	[SimplifyCFG] Revise common code sinking	2014-12-23 08:26:55 +00:00
Vectorize	Some code improvements in Masked Load/Store.	2014-12-30 14:28:14 +00:00
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