Chad Rosier b7110cf5b5 Improve the compression of the tablegen DiffLists by introducing a new sort ... algorithm when assigning EnumValues to the synthesized registers. The current algorithm, LessRecord, uses the StringRef compare_numeric function. This function compares strings, while handling embedded numbers. For example, the R600 backend registers are sorted as follows: T1 T1_W T1_X T1_XYZW T1_Y T1_Z T2 T2_W T2_X T2_XYZW T2_Y T2_Z In this example, the 'scaling factor' is dEnum/dN = 6 because T0, T1, T2 have an EnumValue offset of 6 from one another. However, in other parts of the register bank, the scaling factors are different: dEnum/dN = 5: KC0_128_W KC0_128_X KC0_128_XYZW KC0_128_Y KC0_128_Z KC0_129_W KC0_129_X KC0_129_XYZW KC0_129_Y KC0_129_Z The diff lists do not work correctly because different kinds of registers have different 'scaling factors'. This new algorithm, LessRecordRegister, tries to enforce a scaling factor of 1. For example, the registers are now sorted as follows: T1 T2 T3 ... T0_W T1_W T2_W ... T0_X T1_X T2_X ... KC0_128_W KC0_129_W KC0_130_W ... For the Mips and R600 I see a 19% and 6% reduction in size, respectively. I did see a few small regressions, but the differences were on the order of a few bytes (e.g., AArch64 was 16 bytes). I suspect there will be even greater wins for targets with larger register files. Patch reviewed by Jakob. rdar://14006013 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185094 91177308-0d34-0410-b5e6-96231b3b80d8		2013-06-27 19:38:13 +00:00
..
ADT	[APFloat] Added support for parsing float strings which contain {inf,-inf,NaN,-NaN}.	2013-06-24 09:58:05 +00:00
Analysis	Merge isReachable into isBackedge.	2013-06-25 23:32:10 +00:00
Assembly
Bitcode	Move lib/Archive to tools/llvm-ar.	2013-06-17 15:47:20 +00:00
CodeGen	Improve diagnostics when getSizeInBits is called on the Other type.	2013-06-24 17:29:51 +00:00
Config	Don't define LTDL_SHLIBPATH_VAR.	2013-06-11 19:04:13 +00:00
DebugInfo	llvm-dwarfdump: Add support for dumping the .debug_loc section	2013-06-19 21:37:13 +00:00
ExecutionEngine	Pass a StringRef to sys::identifyFileType.	2013-06-10 15:27:39 +00:00
IR	Added support for the Builtin attribute.	2013-06-27 00:25:01 +00:00
IRReader
MC	Use MCFillFragment for zero-initialized data.	2013-06-27 14:35:03 +00:00
Object	[PowerPC] Support @got modifier	2013-06-25 16:49:50 +00:00
Option	Merge changes to clang's Driver code into LLVM's Option library	2013-06-13 18:12:12 +00:00
Support	[Support/Registry.h] Include llvm/Support/Compiler.h.	2013-06-27 17:57:40 +00:00
TableGen	Improve the compression of the tablegen DiffLists by introducing a new sort	2013-06-27 19:38:13 +00:00
Target	TableGen: Generate a function for getting operand indices based on their defined names	2013-06-25 21:22:09 +00:00
Transforms	Add a flag to defer vectorization into a phase after the inliner and its	2013-06-24 07:21:47 +00:00
AutoUpgrade.h
CMakeLists.txt
DebugInfo.h	DebugInfo: enumerator values returned as int64 as they are stored	2013-06-24 07:11:08 +00:00
DIBuilder.h	DebugInfo: DIBuilder changes to match DIEnumerator changes in r184694	2013-06-24 17:34:33 +00:00
GVMaterializer.h
InitializePasses.h	Remove the simplify-libcalls pass (finally)	2013-06-20 19:48:07 +00:00
InstVisitor.h
LinkAllIR.h
LinkAllPasses.h	Remove the simplify-libcalls pass (finally)	2013-06-20 19:48:07 +00:00
Linker.h
Pass.h
PassAnalysisSupport.h
PassManager.h
PassManagers.h
PassRegistry.h
PassSupport.h