Dan Gohman c17e0cf6c0 Implement "superhero" strength reduction, or full strength ... reduction of address calculations down to basic pointer arithmetic. This is currently off by default, as it needs a few other features before it becomes generally useful. And even when enabled, full strength reduction is only performed when it doesn't increase register pressure, and when several other conditions are true. This also factors out a bunch of exisiting LSR code out of StrengthReduceStridedIVUsers into separate functions, and tidies up IV insertion. This actually decreases register pressure even in non-superhero mode. The change in iv-users-in-other-loops.ll is an example of this; there are two more adds because there are two fewer leas, and there is less spilling. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65108 91177308-0d34-0410-b5e6-96231b3b80d8		2009-02-20 04:17:46 +00:00
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Analysis	Use a sign-extend instead of a zero-extend when promoting a	2009-02-18 17:22:41 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	add proper asmwriter and asmparser support for anonymous functions.	2009-02-18 21:48:13 +00:00
Bitcode	Add suppport for ConstantExprs of shufflevectors whose result type is not equal to the	2009-02-12 21:28:33 +00:00
CodeGen	Add an accessor method to DwarfWriter to tell of debugging info should be emitted.	2009-02-20 00:44:43 +00:00
Debugger	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
ExecutionEngine	Fix the logic in this assertion to properly validate the number	2009-02-19 02:55:18 +00:00
Linker	Add the private linkage.	2009-01-15 20:18:42 +00:00
Support	The debugger sometimes lookup dynamically in the runtime to find ivar info of any Objective-C classes. It would be very helpful to debugger if the compiler encodes runtime version number in DWARF.	2009-02-17 22:43:44 +00:00
System	If an executable is run through a symlink, dladdr will return the	2009-02-19 05:34:35 +00:00
Target	Put code that generates debug labels into TableGen so that it can be used by	2009-02-18 23:12:06 +00:00
Transforms	Implement "superhero" strength reduction, or full strength	2009-02-20 04:17:46 +00:00
VMCore	add proper asmwriter and asmparser support for anonymous functions.	2009-02-18 21:48:13 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00