Chris Lattner b14ab8a10d Teach the dag combiner to turn a truncate/sign_extend pair into a sextinreg ... when the types match up. This allows the X86 backend to compile: sbyte %toggle_value(sbyte* %tmp.1) { %tmp.2 = load sbyte* %tmp.1 ret sbyte %tmp.2 } to this: _toggle_value: mov %EAX, DWORD PTR [%ESP + 4] movsx %EAX, BYTE PTR [%EAX] ret instead of this: _toggle_value: mov %EAX, DWORD PTR [%ESP + 4] movsx %EAX, BYTE PTR [%EAX] movsx %EAX, %AL ret noticed in Shootout/objinst. -Chris git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24630 91177308-0d34-0410-b5e6-96231b3b80d8		2005-12-07 07:11:03 +00:00
..
Analysis	Collapsing node if variable length struct with final field of length zero	2005-12-06 18:04:30 +00:00
Archive	Fix a problem with llvm-ranlib that (on some platforms) caused the archive	2005-11-30 05:21:10 +00:00
AsmParser	regenerate	2005-11-12 18:22:38 +00:00
Bytecode	Fix a problem with llvm-ranlib that (on some platforms) caused the archive	2005-11-30 05:21:10 +00:00
CodeGen	Teach the dag combiner to turn a truncate/sign_extend pair into a sextinreg	2005-12-07 07:11:03 +00:00
Debugger	tell selectiondag when we're debugging	2005-11-16 07:21:47 +00:00
ExecutionEngine	Fix a nasty bug that was causing miscompilation of global variables	2005-10-23 23:54:56 +00:00
Linker	Fix test/Regression/Linker/2005-12-06-AppendingZeroLengthArrays.ll and	2005-12-06 17:30:58 +00:00
Support	indicate when a tool is a debug build.	2005-11-16 06:36:47 +00:00
System	instead of using mstats, use malloc_zone_statistics which returns numbers	2005-11-14 07:27:56 +00:00
Target	fix divide and remainder	2005-12-06 23:27:39 +00:00
Transforms	getRawValue zero extens for unsigned values, use getsextvalue so that we	2005-12-05 18:23:57 +00:00
VMCore	Add a flag to Module::getGlobalVariable to allow it to return vars with	2005-12-05 05:30:21 +00:00
Makefile	Add the Linker library	2004-11-14 21:54:41 +00:00