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[FastISel] Move optimizeCmpPredicate to FastISel base class. NFC.

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Make the optimizeCmpPredicate function available to all targets.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217822 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Juergen Ributzka
2014-09-15 20:47:13 +00:00
parent 34ad085eec
commit 1ee1e8bdc2
3 changed files with 42 additions and 40 deletions
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40
lib/Target/X86/X86FastISel.cpp
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@@ -164,46 +164,6 @@ private:
} // end anonymous namespace.
static CmpInst::Predicate optimizeCmpPredicate(const CmpInst *CI) {
// If both operands are the same, then try to optimize or fold the cmp.
CmpInst::Predicate Predicate = CI->getPredicate();
if (CI->getOperand(0) != CI->getOperand(1))
return Predicate;
switch (Predicate) {
default: llvm_unreachable("Invalid predicate!");
case CmpInst::FCMP_FALSE: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::FCMP_OEQ: Predicate = CmpInst::FCMP_ORD; break;
case CmpInst::FCMP_OGT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::FCMP_OGE: Predicate = CmpInst::FCMP_ORD; break;
case CmpInst::FCMP_OLT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::FCMP_OLE: Predicate = CmpInst::FCMP_ORD; break;
case CmpInst::FCMP_ONE: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::FCMP_ORD: Predicate = CmpInst::FCMP_ORD; break;
case CmpInst::FCMP_UNO: Predicate = CmpInst::FCMP_UNO; break;
case CmpInst::FCMP_UEQ: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::FCMP_UGT: Predicate = CmpInst::FCMP_UNO; break;
case CmpInst::FCMP_UGE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::FCMP_ULT: Predicate = CmpInst::FCMP_UNO; break;
case CmpInst::FCMP_ULE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::FCMP_UNE: Predicate = CmpInst::FCMP_UNO; break;
case CmpInst::FCMP_TRUE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::ICMP_EQ: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::ICMP_NE: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::ICMP_UGT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::ICMP_UGE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::ICMP_ULT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::ICMP_ULE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::ICMP_SGT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::ICMP_SGE: Predicate = CmpInst::FCMP_TRUE; break;
case CmpInst::ICMP_SLT: Predicate = CmpInst::FCMP_FALSE; break;
case CmpInst::ICMP_SLE: Predicate = CmpInst::FCMP_TRUE; break;
}
return Predicate;
}
static std::pair<X86::CondCode, bool>
getX86ConditionCode(CmpInst::Predicate Predicate) {
X86::CondCode CC = X86::COND_INVALID;