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llvm-mirror/lib/AsmParser
Adrian Prantl cf7e846d11 [IR] Remove the DIExpression field from DIGlobalVariable.
This patch implements PR31013 by introducing a
DIGlobalVariableExpression that holds a pair of DIGlobalVariable and
DIExpression.

Currently, DIGlobalVariables holds a DIExpression. This is not the
best way to model this:

(1) The DIGlobalVariable should describe the source level variable,
    not how to get to its location.

(2) It makes it unsafe/hard to update the expressions when we call
    replaceExpression on the DIGLobalVariable.

(3) It makes it impossible to represent a global variable that is in
    more than one location (e.g., a variable with multiple
    DW_OP_LLVM_fragment-s).  We also moved away from attaching the
    DIExpression to DILocalVariable for the same reasons.

This reapplies r289902 with additional testcase upgrades and a change
to the Bitcode record for DIGlobalVariable, that makes upgrading the
old format unambiguous also for variables without DIExpressions.

<rdar://problem/29250149>
https://llvm.org/bugs/show_bug.cgi?id=31013
Differential Revision: https://reviews.llvm.org/D26769

llvm-svn: 290153
2016-12-20 02:09:43 +00:00
..
CMakeLists.txt
LLLexer.cpp Replace APFloatBase static fltSemantics data members with getter functions 2016-12-14 11:57:17 +00:00
LLLexer.h
LLParser.cpp [IR] Remove the DIExpression field from DIGlobalVariable. 2016-12-20 02:09:43 +00:00
LLParser.h IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
LLToken.h IR: Introduce inrange attribute on getelementptr indices. 2016-11-10 22:34:55 +00:00
LLVMBuild.txt
Parser.cpp