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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Analysis	do not use deprecated interfaces	2008-10-13 10:21:17 +00:00
Archive
AsmParser	regenerate	2008-10-15 12:05:02 +00:00
Bitcode	Rename APFloat::convertToAPInt to bitcastToAPInt to	2008-10-09 18:53:47 +00:00
CodeGen	Adjust whitespace in debug messages to be more consistent	2008-10-15 02:57:38 +00:00
Debugger
ExecutionEngine	little optimization: reuse getPointerToGlobalIfAvailable(CGV) value in emitGlobals()	2008-10-14 10:04:52 +00:00
Linker	Also properly handle linking of strong alias and weak global	2008-10-15 20:10:50 +00:00
Support	Fix command-line option printing to print two spaces where needed,	2008-10-14 20:25:08 +00:00
System	Add <cstdio> include where needed by gcc-4.4.	2008-10-08 07:23:46 +00:00
Target	move PR1941 here.	2008-10-15 16:33:52 +00:00
Transforms	Teach instcombine's visitLoad to scan back several instructions	2008-10-15 23:19:35 +00:00
VMCore	Correct the name of isTrapping in comments.	2008-10-15 22:56:21 +00:00
Makefile