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Clean up spill weight computation. Also some changes to give loop induction

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variable increment / decrement slighter high priority. 

This has major impact on some micro-benchmarks. On MultiSource/Applications
and spec tests, it's a minor win. It also reduce 256.bzip instruction count
by 8%, 55 on 164.gzip on i386 / Darwin.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@82485 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2009-09-21 21:12:25 +00:00
parent b2bb7db9e2
commit cf985a9545
9 changed files with 145 additions and 68 deletions
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4
test/CodeGen/X86/stack-color-with-reg.ll
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@@ -1,6 +1,6 @@
; RUN: llc < %s -mtriple=x86_64-apple-darwin10 -relocation-model=pic -disable-fp-elim -color-ss-with-regs -stats -info-output-file - > %t
; RUN: grep stackcoloring %t | grep "stack slot refs replaced with reg refs" | grep 8
; RUN: grep asm-printer %t | grep 182
; RUN: grep stackcoloring %t | grep "stack slot refs replaced with reg refs" | grep 5
; RUN: grep asm-printer %t | grep 179
type { [62 x %struct.Bitvec*] } ; type %0
type { i8* } ; type %1