| Commit message (Collapse) | Author | Age | Files | Lines |
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Instead of introducing a new bne instruction in Asm.v and the TargetPrinter.ml
I use the equivalent bf instruction. The duplicated code is due to unused return
values of builtins. Now we only emit the additional code for the return value if
the return value is used instead of duplicating the whole emiting sequence.
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In order to avoid clashes during register allocation etc. The
builtins now use fixed registers and mark additional registers as
destroyed for temporaries.
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The new __builtin_atomic_compare_exchange(int *ptr,int *exp,int *dsr);
writes dsr into ptr if ptr is equal to exp and returns true if
ptr is not equal to exp it writes ptr into exp and returns false.
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Conflicts:
powerpc/CBuiltins.ml
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Implement the new __builtin_atomic_load(int *a, int *b); which stores
*a in *b. This differs from the atomic_load of the GCC, since the PPC
ISA manual states that you must jump before the load again if it fails.
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The new builtin __builtin_atomic_exchange(int *a, int *b, int *c)
stores *b in *a and sets *c to the old value of *a.
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(Suggested by A. Appel.)
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The transformation is the same as the one used for structs but packing
always stops after each member.
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In RTL and beyond, the result of a builtin function that has return type different from "void" must be BR, never BR_none. Otherwise, we get compile-time fatal errors, either in Asmexpand or in Lineartyping.
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If they only report an error an assertion failure in Reame.ml was
triggered.
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The builtin_isel function takes a _Bool as first argument and returns
either the second or the third depending on the value of the _Bool.
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This builtins can be used to get the call frame address and the return
address. To correctly compute the load address of the return address
the allocframe is extended to contain the offset of the return address.
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The debug printer now uses udata for member sizes since structs can
have a size larger than 255 bytes. Also functions that are inlined
no longer have an high and low pc in their abbreviation entry.
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In the case of a structure definition we do not need to set the
structure declaration field set to false.
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The cache instructions need no special constraint on the address
argument. Therefore also the generation of the address is no longer
needed.
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This commit adds a builtin function for the mbar instruction.
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This commit adds a builtin for the dcbz instructions. Additionally
the dcbt,dcbtst,dcbtls and icbtls instruction are changed to their
actually form all taking one additional register in Asm.v.
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This commit adds a builtin for the icbtls instruction.
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The dcbtls instruction allows only the values 0 and 2 according to
the PPC Isa.
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THis commit adds a builtin function for the dcbtls instruction.
Additionaly it changes the printing of the dcbt and dcbtst instruction to
embedded mode and adds support for different address variants.
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This commit implements the gcc __builtin_prefetch in a form with all
arguments for the powerpc architecture. The resulting instructions are
the dcbt and dcbtst instructions in Server Category.
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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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__builtin_get_spr() and __builtin_set_spr() work, but horrible error
message if the SPR argument is not a constant.
powerpc/AsmToJSON.ml needs updating.
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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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The diab compiler expected -Wm<pathname> without whitespace.
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Dwarf debuging entries for formal parameters were printed as variables.
This could lead to confusion in function pointer types and later with
local variables.
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