Dan Gohman 2276a7bc8e Teach instcombine's visitLoad to scan back several instructions ... to find opportunities for store-to-load forwarding or load CSE, in the same way that visitStore scans back to do DSE. Also, define a new helper function for testing whether the addresses of two memory accesses are known to have the same value, and use it in both visitStore and visitLoad. These two changes allow instcombine to eliminate loads in code produced by front-ends that frequently emit obviously redundant addressing for memory references. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57608 91177308-0d34-0410-b5e6-96231b3b80d8		2008-10-15 23:19:35 +00:00
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Hello	Initial support for the CMake build system.	2008-09-22 01:08:49 +00:00
Instrumentation	Initial support for the CMake build system.	2008-09-22 01:08:49 +00:00
IPO	dont specialize weak functions and the like	2008-10-08 18:45:59 +00:00
Scalar	Teach instcombine's visitLoad to scan back several instructions	2008-10-15 23:19:35 +00:00
Utils	Don't drop alignment on globals when cloning.	2008-10-09 06:27:14 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00