Chris Lattner 97ae12a988 change iterator invalidation avoidance to just move the iterator backward ... when something changes, instead of moving forward. This allows us to simplify memset lowering, inserting the memset at the end of the range of stuff we're touching instead of at the start. This, in turn, allows us to make use of the addressing instructions already used in the function instead of inserting our own. For example, we now codegen: %tmp41 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 0 ; <i8*> [#uses=2] call void @llvm.memset.i64( i8* %tmp41, i8 -1, i64 8, i32 1 ) instead of: %tmp20 = getelementptr [8 x i8]* %ref_idx, i32 0, i32 7 ; <i8*> [#uses=1] %ptroffset = getelementptr i8* %tmp20, i64 -7 ; <i8*> [#uses=1] call void @llvm.memset.i64( i8* %ptroffset, i8 -1, i64 8, i32 1 ) git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48940 91177308-0d34-0410-b5e6-96231b3b80d8		2008-03-29 05:15:47 +00:00
..
Analysis	Don't include <map> in Pass.h, which doesn't need it. This requires	2008-03-21 23:51:57 +00:00
Archive	Fix thinko: alias always defines new symbol. Even is aliasee itself is undefined.	2008-03-11 00:24:53 +00:00
AsmParser	Add explicit keywords.	2008-03-25 22:06:05 +00:00
Bitcode	Add explicit keywords.	2008-03-25 22:06:05 +00:00
CodeGen	Remove some unneeded code for LiveInterval joining, and fix a bug in the Phi elimination algorithm where we were accidentally reasoning about	2008-03-29 01:58:47 +00:00
Debugger	Remove attribution from file headers, per discussion on llvmdev.	2007-12-29 20:36:04 +00:00
ExecutionEngine	Expose ExecutionEngine::getTargetData() to c and ocaml bindings.	2008-03-27 00:27:14 +00:00
Linker	Ultimately resolve aliases during linking, if possible	2008-03-11 22:51:09 +00:00
Support	Add explicit keywords.	2008-03-25 22:06:05 +00:00
System	Revert r48676. I had plans for using it, but now it's just dead code.	2008-03-24 21:29:58 +00:00
Target	Fix a tokenfactor node to use the load chain rather than the	2008-03-28 23:45:16 +00:00
Transforms	change iterator invalidation avoidance to just move the iterator backward	2008-03-29 05:15:47 +00:00
VMCore	Update example to new syntax.	2008-03-28 06:46:51 +00:00
Makefile	remove attribution from lib Makefiles.	2007-12-29 20:09:26 +00:00