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Convert some assert(0) in default of switch statements to llvm_unreachable.

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llvm-svn: 149808
This commit is contained in:
Craig Topper 2012-02-05 03:43:23 +00:00
parent 07b9d056fa
commit 7b7867bbaa
1 changed files with 7 additions and 10 deletions
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17
lib/Target/X86/X86ISelLowering.cpp
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@ -4502,9 +4502,7 @@ static SDValue getShuffleScalarElt(SDNode *N, int Index, SelectionDAG &DAG,
case X86ISD::MOVSLDUP:
case X86ISD::PALIGN:
return SDValue(); // Not yet implemented.
default:
assert(0 && "unknown target shuffle node");
return SDValue();
default: llvm_unreachable("unknown target shuffle node");
}
Index = ShuffleMask[Index];
@ -5813,7 +5811,7 @@ SDValue RewriteAsNarrowerShuffle(ShuffleVectorSDNode *SVOp,
unsigned NewWidth = (NumElems == 4) ? 2 : 4;
EVT NewVT;
switch (VT.getSimpleVT().SimpleTy) {
default: assert(false && "Unexpected!");
default: llvm_unreachable("Unexpected!");
case MVT::v4f32: NewVT = MVT::v2f64; break;
case MVT::v4i32: NewVT = MVT::v2i64; break;
case MVT::v8i16: NewVT = MVT::v4i32; break;
@ -10577,8 +10575,7 @@ SDValue X86TargetLowering::LowerCMP_SWAP(SDValue Op, SelectionDAG &DAG) const {
unsigned Reg = 0;
unsigned size = 0;
switch(T.getSimpleVT().SimpleTy) {
default:
assert(false && "Invalid value type!");
default: llvm_unreachable("Invalid value type!");
case MVT::i8: Reg = X86::AL; size = 1; break;
case MVT::i16: Reg = X86::AX; size = 2; break;
case MVT::i32: Reg = X86::EAX; size = 4; break;
@ -10696,7 +10693,7 @@ static SDValue LowerADDC_ADDE_SUBC_SUBE(SDValue Op, SelectionDAG &DAG) {
unsigned Opc;
bool ExtraOp = false;
switch (Op.getOpcode()) {
default: assert(0 && "Invalid code");
default: llvm_unreachable("Invalid code");
case ISD::ADDC: Opc = X86ISD::ADD; break;
case ISD::ADDE: Opc = X86ISD::ADC; ExtraOp = true; break;
case ISD::SUBC: Opc = X86ISD::SUB; break;
@ -10838,8 +10835,7 @@ void X86TargetLowering::ReplaceNodeResults(SDNode *N,
DebugLoc dl = N->getDebugLoc();
switch (N->getOpcode()) {
default:
assert(false && "Do not know how to custom type legalize this operation!");
return;
llvm_unreachable("Do not know how to custom type legalize this operation!");
case ISD::SIGN_EXTEND_INREG:
case ISD::ADDC:
case ISD::ADDE:
@ -12322,7 +12318,7 @@ MachineBasicBlock *
X86TargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *BB) const {
switch (MI->getOpcode()) {
default: assert(0 && "Unexpected instr type to insert");
default: llvm_unreachable("Unexpected instr type to insert");
case X86::TAILJMPd64:
case X86::TAILJMPr64:
case X86::TAILJMPm64:
@ -12699,6 +12695,7 @@ void X86TargetLowering::computeMaskedBitsForTargetNode(const SDValue Op,
case Intrinsic::x86_avx2_pmovmskb: {
// High bits of movmskp{s|d}, pmovmskb are known zero.
switch (IntId) {
default: llvm_unreachable("Impossible intrinsic"); // Can't reach here.
case Intrinsic::x86_sse_movmsk_ps: NumLoBits = 4; break;
case Intrinsic::x86_avx_movmsk_ps_256: NumLoBits = 8; break;
case Intrinsic::x86_sse2_movmsk_pd: NumLoBits = 2; break;