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[X86] Remove broken support for autoupgrading llvm.x86.fma4.* intrinsics to llvm.x86.fma.*. 

It currently fires an assert if you even try. Looking back, I don't think it ever worked because it only changed the name of the function object, but not the intrinsic ID stored in it. Given that, I think it can be removed since no one has noticed or complained in the past 4 years.

llvm-svn: 286031
This commit is contained in:
Craig Topper 2016-11-05 04:00:31 +00:00
parent 22886a2853
commit a2f12e0a75
1 changed files with 0 additions and 6 deletions
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6
llvm/lib/IR/AutoUpgrade.cpp
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@ -403,12 +403,6 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
NewFn = Intrinsic::getDeclaration(F->getParent(), ShiftID);
return true;
}
// Fix the FMA4 intrinsics to remove the 4
if (IsX86 && Name.startswith("fma4.")) {
rename(F);
NewFn = F;
return true;
}
// Upgrade any XOP PERMIL2 index operand still using a float/double vector.
if (IsX86 && Name.startswith("xop.vpermil2")) {
auto Params = F->getFunctionType()->params();