mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-31 09:32:11 +00:00
0123b7dcfa
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 |
||
---|---|---|
.. | ||
Analysis | ||
Archive | ||
AsmParser | ||
Bitcode | ||
CodeGen | ||
Debugger | ||
ExecutionEngine | ||
Linker | ||
Support | ||
System | ||
Target | ||
Transforms | ||
VMCore | ||
Makefile |