forked from OSchip/llvm-project
bceaaa9643
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
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| .. | ||
| AArch64 | ||
| ARM | ||
| COFF | ||
| Generic | ||
| Inputs | ||
| Lanai | ||
| MIR | ||
| Mips | ||
| PDB | ||
| PowerPC | ||
| Sparc | ||
| SystemZ | ||
| WebAssembly | ||
| X86 | ||
| arm-relocs.test | ||
| debuglineinfo-macho.test | ||
| debuglineinfo.test | ||
| debugmacinfo.test | ||
| dwarfdump-64-bit-dwarf.test | ||
| dwarfdump-accel.test | ||
| dwarfdump-debug-frame-simple.test | ||
| dwarfdump-debug-loc-simple.test | ||
| dwarfdump-dump-flags.test | ||
| dwarfdump-dump-gdbindex.test | ||
| dwarfdump-dwp.test | ||
| dwarfdump-invalid.test | ||
| dwarfdump-line-dwo.test | ||
| dwarfdump-macho-relocs.test | ||
| dwarfdump-macho-universal.test | ||
| dwarfdump-objc.test | ||
| dwarfdump-pubnames.test | ||
| dwarfdump-ranges.test | ||
| dwarfdump-type-units.test | ||
| dwarfdump-zlib.test | ||
| dwo.ll | ||
| llvm-symbolizer-split-dwarf-empty.test | ||
| llvm-symbolizer-zlib.test | ||
| llvm-symbolizer.test | ||
| macro_link.ll | ||
| member-pointers.o | ||
| missing-abstract-variable.o | ||
| skeletoncu.ll | ||
| strip-DIGlobalVariable.ll | ||