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Charge a formula for explicit multiplies on scaled registers too,

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not just base registers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116010 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2010-10-07 23:41:58 +00:00
parent 0d6715a413
commit 23c3fde39a
1 changed files with 3 additions and 3 deletions
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6
lib/Transforms/Scalar/LoopStrengthReduce.cpp
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@ -728,6 +728,9 @@ void Cost::RateRegister(const SCEV *Reg,
(isa<SCEVUnknown>(cast<SCEVAddRecExpr>(Reg)->getStart()) ||
isa<SCEVConstant>(cast<SCEVAddRecExpr>(Reg)->getStart()))))
++SetupCost;
NumIVMuls += isa<SCEVMulExpr>(Reg) &&
Reg->hasComputableLoopEvolution(L);
}
/// RatePrimaryRegister - Record this register in the set. If we haven't seen it
@ -762,9 +765,6 @@ void Cost::RateFormula(const Formula &F,
return;
}
RatePrimaryRegister(BaseReg, Regs, L, SE, DT);
NumIVMuls += isa<SCEVMulExpr>(BaseReg) &&
BaseReg->hasComputableLoopEvolution(L);
}
if (F.BaseRegs.size() > 1)