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089751535d
llvm-6502/lib
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Evan Cheng 089751535d Avoiding overly aggressive latency scheduling. If the two nodes share an 
operand and one of them has a single use that is a live out copy, favor the
one that is live out. Otherwise it will be difficult to eliminate the copy
if the instruction is a loop induction variable update. e.g.

BB:
sub r1, r3, #1
str r0, [r2, r3]
mov r3, r1
cmp
bne BB

=>

BB:
str r0, [r2, r3]
sub r3, r3, #1
cmp
bne BB

This fixed the recent 256.bzip2 regression.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117675 91177308-0d34-0410-b5e6-96231b3b80d8
2010-10-29 18:09:28 +00:00
..
Analysis Teach memdep to use pointsToConstantMemory to determine that loads 2010-10-29 01:14:04 +00:00
Archive Revert "CMake: Get rid of LLVMLibDeps.cmake and export the libraries normally." 2010-09-13 23:59:48 +00:00
AsmParser Add a new 'hotpatch' attribute. This attribute will insert a two-byte no-op 2010-10-25 15:37:09 +00:00
Bitcode Fix PR8494: when reading invalid bitcode, getTypeByID may return 2010-10-28 15:47:26 +00:00
CodeGen Avoiding overly aggressive latency scheduling. If the two nodes share an 2010-10-29 18:09:28 +00:00
CompilerDriver llvmc: Make ExecuteProgram() look in the driver directory first. 2010-10-28 19:33:08 +00:00
ExecutionEngine Move the remaining attribute macros to systematic names based on the attribute 2010-10-23 08:40:19 +00:00
Linker Fix PR8300 by remembering to keep the bitcast in all cases. 2010-10-19 02:02:57 +00:00
MC Improvements to .section parsing: 2010-10-28 21:33:33 +00:00
Support Fix these error messages to be less confusing. These error 2010-10-29 17:03:40 +00:00
System Check if ErrMsg is null. This fixes the "not" command. 2010-10-29 17:20:42 +00:00
Target Avoiding overly aggressive latency scheduling. If the two nodes share an 2010-10-29 18:09:28 +00:00
Transforms Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support. 2010-10-29 17:29:13 +00:00
VMCore Inline asm multiple alternative constraints development phase 2 - improved basic logic, added initial platform support. 2010-10-29 17:29:13 +00:00
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