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| author | Hal Finkel <hfinkel@anl.gov> | 2012-04-01 19:22:57 +0000 |
|---|---|---|
| committer | Hal Finkel <hfinkel@anl.gov> | 2012-04-01 19:22:57 +0000 |
| commit | ec5a1e36699bba290b2ab45c937897ca282c7c69 (patch) | |
| tree | 4278cda7c8b688fdc285b171cae5ea10da722fa8 /llvm/lib/Target | |
| parent | 9f9f8929ee7a36e8cf33599fdd3f2bccd411401f (diff) | |
| download | bcm5719-llvm-ec5a1e36699bba290b2ab45c937897ca282c7c69.tar.gz bcm5719-llvm-ec5a1e36699bba290b2ab45c937897ca282c7c69.zip | |
Use full anti-dep. breaking with post-ra sched. on the embedded ppc cores.
Post-RA scheduling gives a significant performance improvement on
the embedded cores, so turn it on. Using full anti-dep. breaking is
important for FP-intensive blocks, so turn it on (just on the
embedded cores for now; this should also be good on the 970s because
post-ra scheduling is all that we have for now, but that should have
more testing first).
llvm-svn: 153843
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/PowerPC/PPCSubtarget.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp index fa54a440294..f405b4711a5 100644 --- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp +++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp @@ -147,9 +147,10 @@ bool PPCSubtarget::enablePostRAScheduler( TargetSubtargetInfo::AntiDepBreakMode& Mode, RegClassVector& CriticalPathRCs) const { if (DarwinDirective == PPC::DIR_440 || DarwinDirective == PPC::DIR_A2) - return false; + Mode = TargetSubtargetInfo::ANTIDEP_ALL; + else + Mode = TargetSubtargetInfo::ANTIDEP_CRITICAL; - Mode = TargetSubtargetInfo::ANTIDEP_CRITICAL; CriticalPathRCs.clear(); if (isPPC64()) |
