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Address constants need to be 64bit also in the debug information.
Bug 20335
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- Introduce Archi.ptr64 parameter.
- Define module Ptrofs of integers as wide as a pointer (64 if Archi.ptr64, 32 otherwise).
- Use Ptrofs.int as the offset type for Vptr values and anywhere pointer offsets are manipulated.
- Modify Val operations that handle pointers (e.g. Val.add, Val.sub, Val.cmpu) so that in 64-bit pointer mode it is the "long" operation (e.g. Val.addl, Val.subl, Val.cmplu) that handles pointers.
- Update the memory model accordingly.
- Modify C operations that handle pointers (e.g. addition, subtraction, comparisons) accordingly.
- Make it possible to turn off the splitting of 64-bit integers into pairs of 32-bit integers.
- Update the compiler front-end and back-end accordingly.
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Removed some unused variables, functions etc. and resolved some
problems which occur if all warnings except 3,4,9 and 29 are active.
Bug 18394.
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On older version of the binutils the cfi directives are not always
supported so we only print cfi_sections if the corresponding .ini
setting is set to true.
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Producer as well as target system.
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Debuging code.
The old functions to store the symbol for the Global variables and retrive this
is no longer needed since the atom is stored in DebugInformation. Also the
Debug.Abbrev module is no longer needed.
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Conflicts:
cparser/Unblock.ml
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As observed by B. Schommer, it is not enough to track scopes for every source line, as blocks can occur on a single line (think macros). Hence:
- Revert debug annotations of kind 1 to contain only line number info.
Generate them only when the line number changes.
- Use debug annotations of kind 6 to record the list of active scopes
(as BA_int integer arguments to __builtin_annot). Generate them
before every nontrivial statement, even if on the same line as others.
- Remove the generation of "variable x is declared in scope N" debug
annotations. This can be tracked separately and more efficiently.
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Instead of creating separate annotations for the local variables
we call the Debug.add_lvar_scope and we construct a mapping from
function id + scope id to scope information.
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Conflicts:
debug/CtoDwarf.ml
debug/DwarfPrinter.ml
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C2C: the code that insert debug builtins with the line numbers is now
in Unblock. Handle calls to __builtin_debug.
Unblock: generate __builtin_debug(1) for line numbers, carrying
the list of active scopes as extra arguments.
Generate __builtin_debug(6) for local variable declarations,
carrying the corresponding scope number as extra argument.
Constprop: avoid duplicating debug arguments that are constants already.
PrintAsmaux: show this extra debug info as comments.
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Introduced a new dwarf generation from the information collected in
the DebugInformation and removed the old CtODwarf translation.
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This reverts commit 861292a6c5e58b4f78bef207c717b801b3fc1fed.
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Added a new file debug/Debug.ml which will be the interface between for
generating and printing the debuging information. Currently it contains
only the code for the line directived.
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Merge branch 'master' into debug_locations
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SimplLocals:
- record locations of stack-allocated variables with annotations
(of kind 5) at the beginning of the function;
- mark every assignment to non-stack-allocated variables with an
annotation of kind 2.
Debugvar: (new pass!)
- perform availability analysis for debug annotations of kind 2
- insert "start of live range" and "end of live range" annotations
(kind 3 and 4) to delimit intervals of PCs where the location
of a local variable is known.
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Use EF_debug instead of EF_annot for line number annotations.
Introduce PrintAsmaux.print_debug_info (very incomplete).
powerpc/Asmexpand: revise expand_memcpy_small.
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structured builtin arguments and results.
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Before, the back-end languages had distinct instructions
- Iannot for annotations, taking structured expressions (annot_arg)
as arguments, and producing no results'
- Ibuiltin for other builtins, using simple pseudoregs/locations/registers
as arguments and results.
This branch enriches Ibuiltin instructions so that they take structured
expressions (builtin_arg and builtin_res) as arguments and results.
This way,
- Annotations fit the general pattern of builtin functions,
so Iannot instructions are removed.
- EF_vload_global and EF_vstore_global become useless, as the
same optimization can be achieved by EF_vload/vstore taking
a structured argument of the "address of global" kind.
- Better code can be generated for builtin_memcpy between stack locations,
or volatile accesses to stack locations.
Finally, this commit also introduces a new kind of external function,
EF_debug, which is like EF_annot but produces no observable events.
It will be used later to transport debug info through the back-end,
without preventing optimizations.
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separate file.
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global target dependend option to activate the printing only for targets wher it works.
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default function aligment to be target dependent.
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