Chris Lattner 6da12e6767 Implement rdar://6295824 and PR6724 with two tiny changes ... that can have a big effect :). The first is to enable the iterative SCC passmanager juice that kicks in when the scc passmgr detects that a function pass has devirtualized a call. In this case, it will rerun all the passes it manages on the SCC, up to the iteration count limit (4). This is useful because a function pass may devirualize a call, and we want the inliner to inline it, or pruneeh to infer stuff about it, etc. The second patch is to add *all* call sites to the DevirtualizedCalls list the inliner uses. This list is about to get renamed, but the jist of this is that the inliner now reconsiders *all* inlined call sites as candidates for further inlining. The intuition is this that in cases like this: f() { g(1); } g(int x) { h(x); } We analyze this bottom up, and may decide that it isn't profitable to inline H into G. Next step, we decide that it is profitable to inline G into F, and do so, which means that F now calls H. Even though the call from G -> H may not have been profitable to inline, the call from F -> H may be (in this case because a constant allows folding etc). In my spot checks, this doesn't have a big impact on code. For example, the LLC output for 252.eon grew from 0.02% (from 317252 to 317308) and 176.gcc actually shrunk by .3% (from 1525612 to 1520964 bytes). 252.eon never iterated in the SCC Passmgr, 176.gcc iterated at most 1 time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102823 91177308-0d34-0410-b5e6-96231b3b80d8		2010-05-01 01:15:56 +00:00
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Analysis	Add a comment to this test.	2010-04-26 21:37:43 +00:00
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Assembler
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CodeGen	Test failing too much on too many platforms.	2010-05-01 00:12:33 +00:00
DebugInfo	Update tests. Now DBG_VALUE instruction is created only if alloca corresponding to llvm.dbg.declare is missing.	2010-04-28 20:27:48 +00:00
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FrontendC	Add -o /dev/null to some tests which don't care about their output.	2010-04-30 17:42:30 +00:00
FrontendC++	New test.	2010-04-30 19:39:29 +00:00
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MC	Fixed the word sized Bit Scan Forward/Reverse instructions, they needed the	2010-04-28 23:20:40 +00:00
Other	Add lint checks for invalid uses of memory.	2010-04-30 19:05:00 +00:00
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Transforms	Implement rdar://6295824 and PR6724 with two tiny changes	2010-05-01 01:15:56 +00:00
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