Daniel Sanders fc637bb564 [tblgen] Fix undefined behaviour when assigning integers to large bits<n>'s ...

This code:
  bits<96> X = 0;
was triggering undefined behaviour since it iterates over bits 0..95 and tests
them against the IntInit using 1LL << I.

This patch resolves the undefined behaviour by continuing to treat the IntInit
as a 64-bit value and simply causing all bit tests in excess of 64-bits to report
false. As a result,
  bits<96> X = -1;
will be equivalent to:
  bits<96> X;
  let X{0-63} = -1;
  let X{64-95} = 0;

llvm-svn: 342744

2018-09-21 16:32:49 +00:00

..

CMakeLists.txt

[TableGen] Add a general-purpose JSON backend.

2018-07-11 08:40:19 +00:00

Error.cpp

[TableGen] Use WithColor for printing errors/warnings

2018-06-23 16:48:03 +00:00

JSONBackend.cpp

[TableGen] Add missing std::moves to fix build failure.

2018-07-11 08:57:56 +00:00

LLVMBuild.txt

…

Main.cpp

Revert r330742: Let TableGen write output only if it changed, instead of doing so in cmake.

2018-05-07 23:41:48 +00:00

Record.cpp

[tblgen] Fix undefined behaviour when assigning integers to large bits<n>'s

2018-09-21 16:32:49 +00:00

SetTheory.cpp

[BinaryFormat, Option, TableGen] Fix some Clang-tidy modernize-use-using and Include What You Use warnings; other minor fixes (NFC).

2017-06-16 00:43:26 +00:00

StringMatcher.cpp

Remove trailing space

2018-07-30 19:41:25 +00:00

TableGenBackend.cpp

[TableGen] Fix line wrapping logic for the autogenerated header to use math that makes more sense (at least to me).

2015-05-26 08:07:56 +00:00

TGLexer.cpp

TableGen: Add !ne, !le, !lt, !ge, and !gt comparisons

2018-03-14 11:00:57 +00:00

TGLexer.h

TableGen: Add !ne, !le, !lt, !ge, and !gt comparisons

2018-03-14 11:00:57 +00:00

TGParser.cpp

TableGen: Allow foreach in multiclass to depend on template args

2018-06-21 13:35:44 +00:00

TGParser.h

TableGen: Allow foreach in multiclass to depend on template args

2018-06-21 13:35:44 +00:00