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Turn on list-ilp scheduling by default on x86 and x86-64, fix up

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testcases accordingly. Some are currently xfailed and will be filed
as bugs to be fixed or understood.

Performance results:

roughly neutral on SPEC
some micro benchmarks in the llvm suite are up between 100 and 150%, only
a pair of regressions that are due to be investigated

john-the-ripper saw:
10% improvement in traditional DES
8% improvement in BSDI DES
59% improvement in FreeBSD MD5
67% improvement in OpenBSD Blowfish
14% improvement in LM DES

Small compile time impact.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127208 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher
2011-03-08 02:42:25 +00:00
parent 0bf56c821c
commit 7c2cdb1c05
19 changed files with 25 additions and 19 deletions
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2
test/CodeGen/X86/coalesce-esp.ll
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@@ -1,4 +1,4 @@
; RUN: llc < %s | grep {movl %esp, %ecx}
; RUN: llc < %s | grep {movl %esp, %ebp}
; PR4572
; Don't coalesce with %esp if it would end up putting %esp in