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tblgen will complain if a sign-extended constant does not fit into a data type smaller than i32, e.g., i16. This causes a problem when certain hex constants are used, such as 0xff for byte masks or immediate xor values. tblgen will try the sign-extended value first and, if the sign extended value would overflow, it tries to see if the unsigned value will fit. Consequently, a software developer can now safely incant: (XORHIr16 R16C:$rA, 0xffff) which is somewhat clearer and more informative than incanting: (XORHIr16 R16C:$rA, (i16 -1)) even if the two are bitwise equivalent. Tblgen also outputs the 64-bit unsigned constant in the generated ISel code when getTargetConstant() is invoked. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47188 91177308-0d34-0410-b5e6-96231b3b80d8 |
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.. | ||
buildit | ||
emacs | ||
fpcmp | ||
PerfectShuffle | ||
TableGen | ||
vim | ||
cgiplotNLT.pl | ||
check-each-file | ||
codegen-diff | ||
countloc.sh | ||
DSAclean.py | ||
DSAextract.py | ||
findmisopt | ||
findoptdiff | ||
findsym.pl | ||
GenLibDeps.pl | ||
getsrcs.sh | ||
importNLT.pl | ||
llvm-native-gcc | ||
llvm-native-gxx | ||
llvmdo | ||
llvmgrep | ||
Makefile | ||
makellvm | ||
mkpatch | ||
NewNightlyTest.pl | ||
NightlyTest.gnuplot | ||
NightlyTestTemplate.html | ||
NLT.schema | ||
OldenDataRecover.pl | ||
parseNLT.pl | ||
plotNLT.pl | ||
profile.pl | ||
RegressionFinder.pl | ||
userloc.pl | ||
webNLT.pl |