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Handle float->double extension.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113455 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Eric Christopher 2010-09-09 00:26:48 +00:00
parent 9ed58dff86
commit 4620360842
1 changed files with 23 additions and 0 deletions
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23
lib/Target/ARM/ARMFastISel.cpp
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@ -114,6 +114,7 @@ class ARMFastISel : public FastISel {
virtual bool ARMSelectStore(const Instruction *I);
virtual bool ARMSelectBranch(const Instruction *I);
virtual bool ARMSelectCmp(const Instruction *I);
virtual bool ARMSelectFPExt(const Instruction *I);
// Utility routines.
private:
@ -719,6 +720,26 @@ bool ARMFastISel::ARMSelectCmp(const Instruction *I) {
return true;
}
bool ARMFastISel::ARMSelectFPExt(const Instruction *I) {
// Make sure we have VFP and that we're extending float to double.
if (!Subtarget->hasVFP2()) return false;
Value *V = I->getOperand(0);
if (!I->getType()->isDoubleTy() ||
!V->getType()->isFloatTy()) return false;
unsigned Op = getRegForValue(V);
if (Op == 0) return false;
unsigned Result = createResultReg(ARM::DPRRegisterClass);
AddOptionalDefs(BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL,
TII.get(ARM::VCVTDS), Result)
.addReg(Op));
UpdateValueMap(I, Result);
return true;
}
// TODO: SoftFP support.
bool ARMFastISel::TargetSelectInstruction(const Instruction *I) {
// No Thumb-1 for now.
@ -734,6 +755,8 @@ bool ARMFastISel::TargetSelectInstruction(const Instruction *I) {
case Instruction::ICmp:
case Instruction::FCmp:
return ARMSelectCmp(I);
case Instruction::FPExt:
return ARMSelectFPExt(I);
default: break;
}
return false;