mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
1ce13129c7
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 llvm-svn: 185094 |
||
|---|---|---|
| .. | ||
| bugpoint | ||
| buildit | ||
| count | ||
| crosstool | ||
| emacs | ||
| FileCheck | ||
| FileUpdate | ||
| fpcmp | ||
| git | ||
| git-svn | ||
| jedit | ||
| kate | ||
| KillTheDoctor | ||
| lint | ||
| lit | ||
| llvm-build | ||
| llvm-lit | ||
| Misc | ||
| not | ||
| PerfectShuffle | ||
| release | ||
| TableGen | ||
| Target/ARM | ||
| testgen | ||
| textmate | ||
| unittest | ||
| valgrind | ||
| vim | ||
| yaml-bench | ||
| check-each-file | ||
| clang-parse-diagnostics-file | ||
| codegen-diff | ||
| countloc.sh | ||
| DSAclean.py | ||
| DSAextract.py | ||
| findmisopt | ||
| findoptdiff | ||
| findsym.pl | ||
| GenLibDeps.pl | ||
| GetRepositoryPath | ||
| GetSourceVersion | ||
| getsrcs.sh | ||
| lldbDataFormatters.py | ||
| llvm-compilers-check | ||
| llvm-native-gcc | ||
| llvm-native-gxx | ||
| llvm.grm | ||
| llvm.natvis | ||
| LLVMBuild.txt | ||
| llvmdo | ||
| llvmgrep | ||
| Makefile | ||
| makellvm | ||
| profile.pl | ||
| sort_includes.py | ||
| test_debuginfo.pl | ||
| UpdateCMakeLists.pl | ||
| wciia.py | ||