Nate Begeman 47cd13d42a Handle some more real world cases of rlwimi. These don't come up that ... regularly in "normal" code, but for things like software graphics, they make a big difference. For the following code: unsigned short Trans16Bit(unsigned srcA,unsigned srcB,unsigned alpha) { unsigned tmpA,tmpB,mixed; tmpA = ((srcA & 0x03E0) << 15) | (srcA & 0x7C1F); tmpB = ((srcB & 0x03E0) << 15) | (srcB & 0x7C1F); mixed = (tmpA * alpha) + (tmpB * (32 - alpha)); return ((mixed >> 5) & 0x7C1F) | ((mixed >> 20) & 0x03E0); } We now generate: _Trans16Bit: .LBB_Trans16Bit_0: ; entry andi. r2, r4, 31775 rlwimi r2, r4, 15, 7, 11 subfic r4, r5, 32 mullw r2, r2, r4 andi. r4, r3, 31775 rlwimi r4, r3, 15, 7, 11 mullw r3, r4, r5 add r2, r2, r3 srwi r3, r2, 5 andi. r3, r3, 31775 rlwimi r3, r2, 12, 22, 26 blr Instead of: _Trans16Bit: .LBB_Trans16Bit_0: ; entry slwi r2, r4, 15 rlwinm r2, r2, 0, 7, 11 andi. r4, r4, 31775 or r2, r2, r4 subfic r4, r5, 32 mullw r2, r2, r4 slwi r4, r3, 15 rlwinm r4, r4, 0, 7, 11 andi. r3, r3, 31775 or r3, r4, r3 mullw r3, r3, r5 add r2, r2, r3 srwi r3, r2, 5 andi. r3, r3, 31775 srwi r2, r2, 20 rlwimi r3, r2, 0, 22, 26 blr llvm-svn: 22201		2005-06-08 04:14:27 +00:00
..
Analysis	By definition, 'tail' calls cannot access the stack frame of their caller.	2005-05-08 23:58:12 +00:00
AsmParser	Give the asmparser the ability to parse strings. Patch contributed by	2005-05-20 03:25:47 +00:00
Bytecode	Remove code for conversion from old style va_args. Preparing the way for	2005-06-08 00:49:08 +00:00
CodeGen	aCC and STLport complained about this, because they're like that	2005-05-15 13:05:48 +00:00
Debugger	Remove trailing whitespace	2005-04-21 22:36:52 +00:00
ExecutionEngine	Fix a really horrible problem that causes the JIT to miscompile any program	2005-05-12 06:01:28 +00:00
Linker	Preserve CC's when linking modules	2005-05-09 01:09:39 +00:00
Support	HP-UX system headers make a mess of isinf(), so much so that gcc fixincludes	2005-05-16 06:45:57 +00:00
System	Put in a hack for Cygwin that prevents mkdtemp from being used since	2005-06-02 05:38:20 +00:00
Target	Handle some more real world cases of rlwimi. These don't come up that	2005-06-08 04:14:27 +00:00
Transforms	hack to fix bzip2 (bug 571)	2005-06-04 12:43:56 +00:00
VMCore	Some cleanups for compilation with GCC 4.0.0 to remove warnings:	2005-05-15 16:13:11 +00:00
Makefile	Add the Linker library	2004-11-14 21:54:41 +00:00