Improved comments. No functional change intended.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225080 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrea Di Biagio 2015-01-02 10:47:46 +00:00
parent 8ae0fd2bb3
commit 7fee03e4d5

View File

@ -3883,12 +3883,12 @@ bool X86TargetLowering::isExtractSubvectorCheap(EVT ResVT,
}
bool X86TargetLowering::isCheapToSpeculateCttz() const {
// Don't try to speculate cttz if we can't directly use TZCNT.
// Speculate cttz only if we can directly use TZCNT.
return Subtarget->hasBMI();
}
bool X86TargetLowering::isCheapToSpeculateCtlz() const {
// Don't try to speculate ctlz if we can't directly use LZCNT.
// Speculate ctlz only if we can directly use LZCNT.
return Subtarget->hasLZCNT();
}