| Commit message (Collapse) | Author | Age | Files | Lines |
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__builtin_sqrt (no "f") is the name used by GCC and Clang.
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__builtin_fabs has already been expanded in backend/Selection.v .
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This reverts commit 4dfcd7d4be18e8bc437ca170782212aa06635a95.
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The `__builtin_nop` function is documented only for PowerPC.
It was added to the other architectures by copy paste, but has no
known uses. So, remove `__builtin_nop` from all architectures
but PowerPC.
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* Added semantic for byte swap builtins
The `__builtin_bswap`, `__builtin_bswap16`, `__builtin_bswap32`, `__builtin_bswap64` builtin function are now standard builtin functions with a defined semantics.
The semantics is given in terms of the decode/encode functions used for the memory model.
* Added bswap64 expansion to PowerPC 32 bits.
* Added bswap64 expansion for ARM.
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* Generate a nop instruction after ais annotations.
In order to prevent the merging of ais annotations with following
Labels a nop instruction is inserted, but only if the annotation
is followed immediately by a label.
The insertion of nop instructions is performed during the
expansion of builtin and pseudo assembler instructions and is
processor independent, by inserting a __builtin_nop built-in.
* Add Pnop instruction to ARM, RISC-V, and x86
ARM as well as RISC-V don't have nop instructions that can
be easily encoded by for example add with zero instructions.
For x86 we used to use `mov X0, X0` for nop but this may
not be as efficient as the true nop instruction.
* Implement __builtin_nop on all supported target architectures.
This builtin is not yet made available on the C side for all architectures.
Bug 24067
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This commit introduces a new pass which is run after the expansion of the
builtin functions which performs the expansion and placement of
constants inside the function code.
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assembler (add ra, rb, #-1 --> sub ra, rb, #1)
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Instead of expanding the fixup code for incoming and outgoing
registers in the TargetPrinter we expand them in Asmexpand. This
simplifies the estimate size function and is a prerequisite for
the json export.
Bug 22472
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The ais annotations can be inserted via the new ais variants of
the builtin annotation. They mainly differe in that they have an
address format specifier '%addr' which will be replaced by the
adress in the binary.
The implementation simply prints a label for the builtin call
alongside a the text of the annotation as comment and inserts the
annotation together as acii string in a separate section
'ais_annotations' and replaces the usages of the address format
specifiers by the address of the label of the builtin call.
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Saving the return address register (R14) in the function prologue can be done either with a single "str" instruction if the offset is small enough, or by constructing the address using the R12 register as a temporary then storing with "str" relative to R12.
R12 can be used as a temporary because it is marked as destroyed at function entry. We just need to tell Asmgen.translcode whether R12 still contains the back link left there by Pallocframe, or R12 was trashed. In the latter case R12 will be reloaded from the stack at the next Mgetparam instruction.
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This is what we do for PowerPC and is more resilient to changes in code generation. We need to give Pcfi_rel_offset a dynamic semantics, but that's just a no-op.
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Functions which require large amounts of stack for spilling and/or arguments for function calls lead to stackframe offsets that exceed the 12bit limit of immediate constants in ARM instructions. This patch fixes the stack-offsets in the function prolog/epilog.
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- Add support for PowerPC, with all addressing modes.
- Add support for ARM, with "reg + ofs" addressing mode.
- Add support for RISC-V, with the one addressing mode.
- Constprop.v: forgot to recurse in BA_addptr
- volatile4 test: more tests
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Adds support for the big endian arm targets by making the target
endianess flag configurable, adding support for the big endian
calling conventions, rewriting memory access patterns and adding
big endian versions of the runtime functions.
Bug 19418
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__builtin_ctzll for ARM
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can parse its own .compcert.c output, bug 18060
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Also: in Events, use Senv.equiv to state invariance wrt changes of global envs.
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Hide the reference used internally behind the interface and added
some functions to access the needed values.
Bug 18394
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The code was mostly there for documentation effort. So warning
27 is deactivated again.
Bug 18349
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Removed unused functions and avoid warnings.
Bug 18394.
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Follow-up to commit f531d38
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ARM: add __builtin_clzl, __builtin_clzll
IA32: add __builtin_clzl, __builtin_clzll,
__builtin_ctzl, __builtin_ctzll
Add corresponding tests in tests/regression/
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The AST.ident type represents source-level identifiers as unique positive numbers. However, the mapping identifiers <-> AST.ident differs between runs of CompCert on different source files. This is problematic when we need to produce or recognize external functions and builtin functions with fixed names, for example:
* in $ARCH/Machregs.v to define the register conventions for builtin functions;
* in the VST program logic from Princeton to treat thread primitives specially.
So far, we used AST.ident_of_string to recover the ident associated with a string. However, this function is defined in OCaml and doesn't execute within Coq. This is a problem both for VST and for future executability of CompCert within Coq.
This commit replaces "ident" by "string" in the arguments of EF_external, EF_builtin, EF_inline_asm, EF_annot, and EF_annot_val. This provides stable names for externals and builtins, as needed. For inline asm and annotations, it's a matter of taste, but using strings feels more natural. EF_debug keeps using idents, since some kinds of EF_debug annotations talk about program variables.
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Like for arm and ppc the functions for section names and start and
end addresses of compilation units are defined and the print_annot
function is moved to Asmexpandaux.ml.
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The name_of_section function no returns the correct name for the
debug sections, the prologue and epilogue directives are added and
the labels for the live ranges are introduced in the Asmexpand pass.
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taking the ident as argument.
This functions are currently not used inside the proven part but it
is nice to have them already there, when they are used by some future
pass. They also come equiped with the corresponding proofs.
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Plus: update comments and credit Bernhard Schommer.
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This reverts commit 777566e81b9762d6bdc773a1f63d56a7ac97433c, reversing
changes made to daf9ac64fc9611ecf09d70560a6fa1ba80b9c9c1.
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the same way as it is done for PPC.
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pseudo-instructions so that it does not need to be re-done in
cchecklink.
cchecklink: updated accordingly.
testsuite: compile with -sdump and run cchecklink if supported.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2553 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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