diff options
| author | Reid Spencer <rspencer@reidspencer.com> | 2006-11-20 01:22:35 +0000 |
|---|---|---|
| committer | Reid Spencer <rspencer@reidspencer.com> | 2006-11-20 01:22:35 +0000 |
| commit | d9436b6837e27d93a2ac82ef7dfc2c742be0fe69 (patch) | |
| tree | 085e61911bc5ecbd81c027bd5a5f163810088c47 /llvm/lib/CodeGen | |
| parent | 9f4448a26ef8f7e8be847bf7bce4b6e525743af1 (diff) | |
| download | bcm5719-llvm-d9436b6837e27d93a2ac82ef7dfc2c742be0fe69.tar.gz bcm5719-llvm-d9436b6837e27d93a2ac82ef7dfc2c742be0fe69.zip | |
For PR950:
First in a series of patches to convert SetCondInst into ICmpInst and
FCmpInst using only two opcodes and having the instructions contain their
predicate value. Nothing uses these classes yet. More patches to follow.
llvm-svn: 31867
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp index 11347f9e584..8b9fa863296 100644 --- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp @@ -541,6 +541,8 @@ public: void visitShl(User &I) { visitShift(I, ISD::SHL); } void visitLShr(User &I) { visitShift(I, ISD::SRL); } void visitAShr(User &I) { visitShift(I, ISD::SRA); } + void visitICmp(User &I); + void visitFCmp(User &I); void visitSetCC(User &I, ISD::CondCode SignedOpc, ISD::CondCode UnsignedOpc, ISD::CondCode FPOpc); void visitSetEQ(User &I) { visitSetCC(I, ISD::SETEQ, ISD::SETEQ, @@ -1442,6 +1444,60 @@ void SelectionDAGLowering::visitShift(User &I, unsigned Opcode) { setValue(&I, DAG.getNode(Opcode, Op1.getValueType(), Op1, Op2)); } +void SelectionDAGLowering::visitICmp(User &I) { + ICmpInst *IC = cast<ICmpInst>(&I); + SDOperand Op1 = getValue(IC->getOperand(0)); + SDOperand Op2 = getValue(IC->getOperand(1)); + ISD::CondCode Opcode; + switch (IC->getPredicate()) { + case ICmpInst::ICMP_EQ : Opcode = ISD::SETEQ; break; + case ICmpInst::ICMP_NE : Opcode = ISD::SETNE; break; + case ICmpInst::ICMP_UGT : Opcode = ISD::SETUGT; break; + case ICmpInst::ICMP_UGE : Opcode = ISD::SETUGE; break; + case ICmpInst::ICMP_ULT : Opcode = ISD::SETULT; break; + case ICmpInst::ICMP_ULE : Opcode = ISD::SETULE; break; + case ICmpInst::ICMP_SGT : Opcode = ISD::SETGT; break; + case ICmpInst::ICMP_SGE : Opcode = ISD::SETGE; break; + case ICmpInst::ICMP_SLT : Opcode = ISD::SETLT; break; + case ICmpInst::ICMP_SLE : Opcode = ISD::SETLE; break; + default: + assert(!"Invalid ICmp predicate value"); + Opcode = ISD::SETEQ; + break; + } + setValue(&I, DAG.getSetCC(MVT::i1, Op1, Op2, Opcode)); +} + +void SelectionDAGLowering::visitFCmp(User &I) { + FCmpInst *FC = cast<FCmpInst>(&I); + SDOperand Op1 = getValue(FC->getOperand(0)); + SDOperand Op2 = getValue(FC->getOperand(1)); + ISD::CondCode Opcode; + switch (FC->getPredicate()) { + case FCmpInst::FCMP_FALSE : Opcode = ISD::SETFALSE; + case FCmpInst::FCMP_OEQ : Opcode = ISD::SETOEQ; + case FCmpInst::FCMP_OGT : Opcode = ISD::SETOGT; + case FCmpInst::FCMP_OGE : Opcode = ISD::SETOGE; + case FCmpInst::FCMP_OLT : Opcode = ISD::SETOLT; + case FCmpInst::FCMP_OLE : Opcode = ISD::SETOLE; + case FCmpInst::FCMP_ONE : Opcode = ISD::SETONE; + case FCmpInst::FCMP_ORD : Opcode = ISD::SETO; + case FCmpInst::FCMP_UNO : Opcode = ISD::SETUO; + case FCmpInst::FCMP_UEQ : Opcode = ISD::SETUEQ; + case FCmpInst::FCMP_UGT : Opcode = ISD::SETUGT; + case FCmpInst::FCMP_UGE : Opcode = ISD::SETUGE; + case FCmpInst::FCMP_ULT : Opcode = ISD::SETULT; + case FCmpInst::FCMP_ULE : Opcode = ISD::SETULE; + case FCmpInst::FCMP_UNE : Opcode = ISD::SETUNE; + case FCmpInst::FCMP_TRUE : Opcode = ISD::SETTRUE; + default: + assert(!"Invalid FCmp predicate value"); + Opcode = ISD::SETFALSE; + break; + } + setValue(&I, DAG.getSetCC(MVT::i1, Op1, Op2, Opcode)); +} + void SelectionDAGLowering::visitSetCC(User &I,ISD::CondCode SignedOpcode, ISD::CondCode UnsignedOpcode, ISD::CondCode FPOpcode) { |
