Bill Wendling f2c78f344e 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. llvm-svn: 151691		2012-02-29 01:46:50 +00:00
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Analysis	Duncan pointed out that if the alignment isn't explicitly specified, it defaults to the ABI alignment. Given that, make this code a bit more aggressive in such cases.	2012-02-27 23:16:46 +00:00
Archive	Avoid using an invalidated iterator.	2012-01-23 05:07:16 +00:00
AsmParser	Convert assert(0) to llvm_unreachable	2012-02-07 05:05:23 +00:00
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	More dead code removal (using -Wunreachable-code)	2012-01-20 21:51:11 +00:00
ExecutionEngine	EE/Interpreter/ExternalFunctions.cpp: Staticize lle_X_() entries. They can be mapped in FuncNames[] at the initialization.	2012-02-24 00:20:08 +00:00
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	Use the DT dominates function in the verifier.	2012-02-26 02:23:37 +00:00
CMakeLists.txt	Move TableGen's parser and entry point into a library	2011-10-01 16:41:13 +00:00
LLVMBuild.txt	LLVMBuild: Introduce a common section which currently has a list of the	2011-12-12 22:45:54 +00:00
Makefile	Remove more of llvmc and dependencies.	2011-09-20 00:34:27 +00:00