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Refix CodeGen/Generic/switch-lower.ll. In contrast to my previous patch,

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this doesn't miscompile lots of programs :)

llvm-svn: 34268
This commit is contained in:
Chris Lattner 2007-02-14 07:18:16 +00:00
parent fc2686da00
commit 0c973a02d9
1 changed files with 5 additions and 5 deletions
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10
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
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@ -1205,8 +1205,8 @@ void SelectionDAGLowering::visitSwitch(SwitchInst &I) {
if ((TLI.isOperationLegal(ISD::BR_JT, MVT::Other) ||
TLI.isOperationLegal(ISD::BRIND, MVT::Other)) &&
Cases.size() > 5) {
uint64_t First =cast<ConstantInt>(Cases.front().first)->getZExtValue();
uint64_t Last = cast<ConstantInt>(Cases.back().first)->getZExtValue();
uint64_t First =cast<ConstantInt>(Cases.front().first)->getSExtValue();
uint64_t Last = cast<ConstantInt>(Cases.back().first)->getSExtValue();
double Density = (double)Cases.size() / (double)((Last - First) + 1ULL);
if (Density >= 0.3125) {
@ -1255,7 +1255,7 @@ void SelectionDAGLowering::visitSwitch(SwitchInst &I) {
std::vector<MachineBasicBlock*> DestBBs;
uint64_t TEI = First;
for (CaseItr ii = Cases.begin(), ee = Cases.end(); ii != ee; ++TEI)
if (cast<ConstantInt>(ii->first)->getZExtValue() == TEI) {
if (cast<ConstantInt>(ii->first)->getSExtValue() == TEI) {
DestBBs.push_back(ii->second);
++ii;
} else {
@ -1363,8 +1363,8 @@ void SelectionDAGLowering::visitSwitch(SwitchInst &I) {
// Create a CaseBlock record representing a conditional branch to
// the LHS node if the value being switched on SV is less than C.
// Otherwise, branch to LHS.
ISD::CondCode CC = ISD::SETLT;
SelectionDAGISel::CaseBlock CB(CC, SV, C, TrueBB, FalseBB, CR.CaseBB);
SelectionDAGISel::CaseBlock CB(ISD::SETLT, SV, C, TrueBB, FalseBB,
CR.CaseBB);
if (CR.CaseBB == CurMBB)
visitSwitchCase(CB);