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Author SHA1 Message Date
Paul C. Anagnostopoulos ae2cb4f427 [TableGen] Add true and false literals to represent booleans 
Update the Programmer's Reference document.

Add a test. Update a couple of tests with an improved error message.

Differential Revision: https://reviews.llvm.org/D90635
 2020-11-05 09:07:21 -05:00
Paul C. Anagnostopoulos ef6f6d1c1a [TableGen] Eliminate uses of true and false in .td files. 
They occurred in one NVPTX file and some test files.

Differential Revision: https://reviews.llvm.org/D90513
 2020-10-31 10:54:33 -04:00
Javed Absar a3e3d85286 [TblGen] Extend !if semantics through new feature !cond 
This patch extends TableGen language with !cond operator.
Instead of embedding !if inside !if which can get cumbersome,
one can now use !cond.
Below is an example to convert an integer 'x' into a string:

    !cond(!lt(x,0) : "Negative",
          !eq(x,0) : "Zero",
          !eq(x,1) : "One,
          1        : "MoreThanOne")

Reviewed By: hfinkel, simon_tatham, greened
Differential Revision: https://reviews.llvm.org/D55758

llvm-svn: 352185
 2019-01-25 10:25:25 +00:00