Bill Wendling e1b66f1145 Restrict this transformation to equality conditions. ... This transformation is not correct for not-equal conditions: (trunc x) != C1 & (and x, CA) != C2 -> (and x, CA|CMAX) != C1|C2 Let C1 == 0 C2 == 0 CA == 0xFF0000 CMAX == 0xFF and truncating to i8. The original truth table: x | A: trunc x != 0 | B: x & 0xFF0000 != 0 | A & B != 0 -------------------------------------------------------------- 0x00000 | 0 | 0 | 0 0x00001 | 1 | 0 | 0 0x10000 | 0 | 1 | 0 0x10001 | 1 | 1 | 1 The truth table of the replacement: x | x & 0xFF00FF != 0 ---------------------------- 0x00000 | 0 0x00001 | 1 0x10000 | 1 0x10001 | 1 So they are different. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151691 91177308-0d34-0410-b5e6-96231b3b80d8		2012-02-29 01:46:50 +00:00
..
Analysis
Archive
AsmParser
Bitcode	Fix PR12080 by ensuring that MaterializeModule actually reads all the bitcode	2012-02-29 00:07:09 +00:00
CodeGen	Add an analyzeVirtReg() function.	2012-02-29 01:40:37 +00:00
DebugInfo
ExecutionEngine
Linker	Oops...Don't commit the other stuff..	2012-02-28 04:01:21 +00:00
MC	Make MemoryObject accessor members const again	2012-02-29 01:09:06 +00:00
Object	In the ObjectFile interface, replace isInternal(), isAbsolute(), isGlobal(), and isWeak(), with a bitset of flags.	2012-02-28 23:47:53 +00:00
Support	Make MemoryObject accessor members const again	2012-02-29 01:09:06 +00:00
TableGen	Remove stray semi-colon.	2012-02-28 15:35:52 +00:00
Target	Make MemoryObject accessor members const again	2012-02-29 01:09:06 +00:00
Transforms	Restrict this transformation to equality conditions.	2012-02-29 01:46:50 +00:00
VMCore
CMakeLists.txt
LLVMBuild.txt
Makefile