| Commit message (Collapse) | Author | Age | Files | Lines |
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- Switch CompCert C / Clight AST of composite types (structs and unions)
from a structural representation to a nominal representation,
closer to concrete syntax.
- This avoids algorithmic inefficiencies due to the structural representation.
- Closes PR#4.
- Smallstep: make small-step semantics more polymorphic in the type of the
global environment.
- Globalenvs: introduce Senv.t (symbol environments) as a restricted view
on Genv.t (full global environments).
- Events, Smallstep: use Senv instead of Genv to talk about global names.
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Use these constructor functions in C2C to rely less on the types produced
by the unverified elaborator.
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This is achieved by declaring these functions in C2C.ml, then
re-checking their declarations in the global environment during
the Selection pass.
In passing, the "hf" parameter for SelectLong functions was removed
and replaced by fixed identifiers corresponding to the actual names
of the helper functions.
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them off.
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2572 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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(in CompCert C to Cminor, included)
- Translation of "switch" to decision trees or jumptables made generic
over the sizes of integers and moved to the Cminor->CminorSel pass
instead of CminorSel->RTL as before.
- CminorSel: add "exitexpr" to support the above.
- ValueDomain: more precise analysis of comparisons against an integer
literal. E.g. "x >=u 0" is always true.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2565 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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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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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2549 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Moved scanning of char constants and string literals entirely to Lexer
- Parser: separate STRING_LITERAL from CONSTANT to be closer to ISO C99 grammar
- pre_parser: adapted + "asm" takes string_literal, not CONSTANT
- Revised errors "inline doesnt belong here"
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2492 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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(Merge of branch newparser.)
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2469 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Ctypes: add useful functions on attributes; remove attrs in typeconv
(because attributes are meaningless on r-values)
- C2C: fixed missing or redundant Evalof
- Cop: ignore attributes in ptr + int and ptr - int (meaningless on r-values);
add sanity check between typeconv/classify_binarith and the C99 standard.
- cparser: fixed several cases where incorrect type annotations were put
on expressions.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2457 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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1) Revised division of labor between RTLtyping and Lineartyping:
- RTLtyping no longer keeps track of single-precision floats,
switches from subtype-based inference to unification-based inference.
- Unityping: new library for unification-based inference.
- Locations: don't normalize at assignment in a stack slot
- Allocation, Allocproof: simplify accordingly.
- Lineartyping: add inference of locations that contain
a single-precision float.
- Stackingproof: adapted accordingly.
This addresses a defect report whereas RTLtyping was rejecting code that used a RTL pseudoreg to hold both double- and single-precision floats (see test/regression/singlefloats.c).
This corresponds to commits 2435+2436 plus improvements in Lineartyping.
2) Add -dtimings option to measure compilation times.
Moved call to C parser from Elab to Parse, to make it easier to
measure parsing time independently of elaboration time.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2449 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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that pop the x87 FP stack (var <- FP0). Otherwise, (void) f();
where f returns a float eventually produces a FP stack overflow.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2416 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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Refactored compilation flags that affect the Coq part (module Compopts).
Added support for C99 for loops with declarations.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2410 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Revised printing of intermediate RTL code.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2403 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- endianness
- alignment constraints for 8-byte types
(which is 4 for x86 ABI and 8 for other ABIs)
- NaN handling options (superceding the Nan module, removed).
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2402 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2381 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Also axiomatize the semantics of inline asm
- In Cexec, revised parameterization over do_external_function
- In Interp.ml, matching changes + suppression of Interp_ext.ml
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2370 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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them.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2369 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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are necessary, only two parameters (default_pl and choose_binop_pl).
SelectDiv: optimize FP division by a power of 2.
ConstpropOp: optimize 2.0 * x and x * 2.0 into x + x.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2326 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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More precise modeling of NaNs.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2303 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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with some static analysis tools).
*/PrintAsm.ml: don't cfa_adjust at Pfreeframe, as more code from the function can appear after (in case of tailcalls).
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2256 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2227 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2225 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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1- new register allocator (+ live range splitting, spilling&reloading, etc)
based on a posteriori validation using the Rideau-Leroy algorithm
2- support for 64-bit integer arithmetic (type "long long").
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2200 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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oracle + a validator.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2157 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2101 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Alternate semantics for Clight where function parameters are temporaries,
not variables
- New pass SimplLocals that turns non-addressed local variables into
temporaries
- Simplified Csharpminor, Cshmgen and Cminorgen accordingly
- SimplExpr starts its temporaries above variable names, therefoe
Cminorgen no longer needs to encode variable names and temps names.
- Simplified Cminor parser & printer, as well as Errors, accordingly.
- New tool clightgen to produce Clight AST in Coq-parsable .v files.
- Removed side condition "return type is void" on rules skip_seq
in the semantics of CompCert C, Clight, C#minor, Cminor.
- Adapted RTLgenproof accordingly (now uses a memory extension).
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2083 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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Remove stdio hack in runtime/
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1979 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1978 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1939 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Revised memory model with Max and Cur permissions, but without bounds
- Constant propagation of 'const' globals
- Function inlining at RTL level
- (Unprovable) elimination of unreferenced static definitions
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1899 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Most RTL operators now evaluate to Some Vundef instead of None
when undefined behavior occurs.
- More aggressive instruction selection.
- "Bertotization" of pattern-matchings now implemented by a proper preprocessor.
- Cast optimization moved to cfrontend/Cminorgen; removed backend/CastOptim.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1790 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1732 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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test/regression: int main() so that interpretation works
Revised once more implementation of __builtin_memcpy (to check for PPC & ARM)
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1688 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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Added -dmach option and corresponding printer for Mach code.
CleanupLabelsproof.v: fixed for ARM
Driver.ml: -E sends output to stdout; support for .s and .S source files.
cparser/Elab.ml: spurious comment deleted.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1648 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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done in Coq (module Initializers), using the same primitives as those for CompCert C's semantics.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1602 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1601 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1597 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1545 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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(May fail if float is too big to be converted.)
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1544 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Reload temporaries are marked as destroyed (set to Vundef) across
operations in the semantics of LTL, LTLin, Linear and Mach,
allowing Asmgen to reuse them.
- Added IA32 port.
- Cleaned up float conversions and axiomatization of floats.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1499 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Csyntax, Csem: source C language has side-effects within expressions,
performs implicit casts, and has nondeterministic reduction semantics
for expressions
- Cstrategy: deterministic red. sem. for the above
- Clight: the previous source C language, with pure expressions.
Added: temporary variables + implicit casts.
- New pass SimplExpr to pull side-effects out of expressions
(previously done in untrusted Caml code in cparser/)
- Csharpminor: added temporary variables to match Clight.
- Cminorgen: adapted, removed cast optimization (moved to back-end)
- CastOptim: RTL-level optimization of casts
- cparser: transformations Bitfields, StructByValue and StructAssign
now work on non-simplified expressions
- Added pretty-printers for several intermediate languages,
and matching -dxxx command-line flags.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1467 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1341 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- Revised memory model with concrete representation of ints & floats,
and per-byte access permissions
- Revised Globalenvs implementation
- Matching changes in all languages and proofs.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1282 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1232 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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#pragma use_section.
Some clean-ups in Cil2Csyntax.
Separate mach-dep parts of extraction/extraction.v into
<arch>/extractionMachdep.v
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1167 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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