Evan Cheng 4ebe9b79fa Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue. ... %reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1 %reg1029<def> = MOV8rr %reg1028 %reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead> insert => %reg1030<def> = MOV8rr %reg1028 %reg1030<def> = ADD8rr %reg1028<kill>, %reg1029<kill>, %EFLAGS<imp-def,dead> In this case, it might not be possible to coalesce the second MOV8rr instruction if the first one is coalesced. So it would be profitable to commute it: %reg1028<def> = EXTRACT_SUBREG %reg1027<kill>, 1 %reg1029<def> = MOV8rr %reg1028 %reg1029<def> = SHR8ri %reg1029, 7, %EFLAGS<imp-def,dead> insert => %reg1030<def> = MOV8rr %reg1029 %reg1030<def> = ADD8rr %reg1029<kill>, %reg1028<kill>, %EFLAGS<imp-def,dead> llvm-svn: 62954		2009-01-25 03:53:59 +00:00
..
Analysis	Introduce two DWARF attribute extentions DW_AT_APPLE_optimized, DW_AT_APPLE_flags.	2009-01-23 22:33:47 +00:00
Archive	Add the private linkage.	2009-01-15 20:18:42 +00:00
AsmParser	Add the private linkage.	2009-01-15 20:18:42 +00:00
Bitcode	use specialized accessor instead of plain getOperand(0)	2009-01-16 18:40:27 +00:00
CodeGen	Teach 2addr pass to be do more commuting. If both uses of a two-address instruction are killed, but the first operand has a use before and after the def, commute if the second operand does not suffer from the same issue.	2009-01-25 03:53:59 +00:00
Debugger	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00
ExecutionEngine	Add support for deleting a module provider from a JIT in such a way that it does not cause the owned module to be fully materialized.	2009-01-23 19:27:28 +00:00
Linker	Add the private linkage.	2009-01-15 20:18:42 +00:00
Support	Introduce two DWARF attribute extentions DW_AT_APPLE_optimized, DW_AT_APPLE_flags.	2009-01-23 22:33:47 +00:00
System	rename methods in System/Host to be more consistent.	2009-01-22 19:53:00 +00:00
Target	Fix an indent and a typo.	2009-01-24 22:12:48 +00:00
Transforms	Revert previous change; even this mild and clearly	2009-01-24 21:49:34 +00:00
VMCore	Simplify the logic of getting hold of a PHI predecessor block.	2009-01-23 19:40:15 +00:00
Makefile	Removed trailing whitespace from Makefiles.	2009-01-09 16:44:42 +00:00