Chandler Carruth 47187cb94a Rework the rewriting of loads and stores for vector and integer allocas ... to properly handle the combinations of these with split integer loads and stores. This essentially replaces Evan's r168227 by refactoring the code in a different way, and trynig to mirror that refactoring in both the load and store sides of the rewriting. Generally speaking there was some really problematic duplicated code here that led to poorly founded assumptions and then subtle bugs. Now much of the code actually flows through and follows a more consistent style and logical path. There is still a tiny bit of duplication on the store side of things, but it is much less bad. This also changes the logic to never re-use a load or store instruction as that was simply too error prone in practice. I've added a few tests (one a reduction of the one in Evan's original patch, which happened to be the same as the report in PR14349). I'm going to look at adding a few more tests for things I found and fixed in passing (such as the volatile tests in the vectorizable predicate). This patch has survived bootstrap, and modulo one bugfix survived Duncan's test suite, but let me know if anything else explodes. llvm-svn: 168346		2012-11-20 01:12:50 +00:00
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Hello
InstCombine	Don't try to calculate the alignment of an unsigned type. Fixes PR14371!	2012-11-18 05:39:39 +00:00
Instrumentation	Plug a memory leak in the GCOV profiling emitter, which never released the edge table memory.	2012-11-17 13:49:37 +00:00
IPO	Clean up handling of always-inline functions in the inliner.	2012-11-19 07:04:35 +00:00
Scalar	Rework the rewriting of loads and stores for vector and integer allocas	2012-11-20 01:12:50 +00:00
Utils	SimplifyCFG: Don't assume non-null ScalarTargetTransformInfo.	2012-11-16 18:22:08 +00:00
Vectorize	LoopVectorizer: Add initial support for pointer induction variables (for example: *dst++ = *src++).	2012-11-17 00:27:03 +00:00
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