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[X86] Merge a switch statement inside a default case of another switch statement on the same variable. There was no additional code in the default so this should be no functional change. 

llvm-svn: 225345
This commit is contained in:
Craig Topper 2015-01-07 08:10:38 +00:00
parent 8b3c47ca57
commit 39354e1b1a
1 changed files with 167 additions and 172 deletions
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7
llvm/lib/Target/X86/X86InstrInfo.cpp
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@ -2267,6 +2267,7 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
unsigned MIOpc = MI->getOpcode();
switch (MIOpc) {
default: return nullptr;
case X86::SHL64ri: {
assert(MI->getNumOperands() >= 3 && "Unknown shift instruction!");
unsigned ShAmt = getTruncatedShiftCount(MI, 2);
@ -2321,10 +2322,6 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
.addReg(0).addImm(1 << ShAmt).addOperand(Src).addImm(0).addReg(0);
break;
}
default: {
switch (MIOpc) {
default: return nullptr;
case X86::INC64r:
case X86::INC32r: {
assert(MI->getNumOperands() >= 2 && "Unknown inc instruction!");
@ -2495,8 +2492,6 @@ X86InstrInfo::convertToThreeAddress(MachineFunction::iterator &MFI,
MI->getOperand(2).getImm());
break;
}
}
}
if (!NewMI) return nullptr;