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Sander de Smalen 118099a62c [TableGen][AsmMatcherEmitter] Allow tied operands of different classes in aliases. 
Allow a tied operand of a different operand class in InstAliases,
so that the operand can be printed (and added to the MC instruction)
as the appropriate register. For example, 'GPR64as32', which would
be printed/parsed as a 32bit register and should match a tied 64bit
register operand, where the former is a sub-register of the latter.

This patch also generalizes the constraint checking to an overrideable
method in MCTargetAsmParser, so that target asmparsers can specify
whether a given operand satisfies the tied register constraint.

Reviewers: olista01, rengolin, fhahn, SjoerdMeijer, samparker, dsanders, craig.topper

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D47714

llvm-svn: 334942
 		2018-06-18 13:39:29 +00:00
clang Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
clang-tools-extra Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
compiler-rt Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
debuginfo-tests [debuginfo-tests] Always use the system python to invoke llgdb.py. 2018-06-10 19:38:26 +00:00
libclc Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
libcxx Fix libcxx tests after clang r334677. 2018-06-17 19:58:45 +00:00
libcxxabi Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
libunwind Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
lld Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
lldb Fix the 'tb' alias command 2018-06-18 04:34:33 +00:00
llgo Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
llvm [TableGen][AsmMatcherEmitter] Allow tied operands of different classes in aliases. 2018-06-18 13:39:29 +00:00
openmp [OpenMP] Fix formatting issues in kmp_stats.h 2018-06-08 22:27:53 +00:00
parallel-libs Update copyright year to 2018. 2018-06-18 12:22:17 +00:00
polly Adjust for clang-format changes 2018-06-18 13:01:52 +00:00
README.md
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README.md

Low Level Virtual Machine (LLVM)

This directory and its subdirectories contain source code for LLVM, a toolkit for the construction of highly optimized compilers, optimizers, and runtime environments.