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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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- 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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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2381 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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trick prevents a future mapping of the Mach/Asm call stack as a single
block. IA32 is fixed, PowerPC and ARM remains to be done.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2136 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- no more prediction of return addresses (Asmgenretaddr is gone)
- instead, punch a hole for the retaddr in Mach stack frame and
fill this hole with the return address in the Asmgen proof.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2129 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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Update ARM port.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2085 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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function definition, so that comparisons between function pointers
are correctly defined.
AST, Globalenvs, and many other files:
represent programs as a list of (function or variable) definitions
instead of two lists, one for functions and the other for variables.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@2067 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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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1823 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- native treatment of volatile accesses in CompCert C's semantics
- translation of volatile accesses to built-ins in SimplExpr
- native treatment of struct assignment and passing struct parameter by value
- only passing struct result by value remains emulated
- in cparser, remove emulations that are no longer used
- added C99's type _Bool and used it to express || and && more efficiently.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1814 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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the Reload pass.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1713 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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of semantic preservation.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1683 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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ia32/PrintAsm.ml: simplified accordingly; other PrintAsm.ml to be fixed.
ia32/Asm.v: Pmov_ri can undef flags (if translated to xor)
cparser/Ceval.ml: treat ~ in constant exprs
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1647 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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Removed Machabstr and Machabstr2concr, now useless following the reengineering
of Stacking.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1633 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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- In pointer values "Vptr b ofs", interpret "ofs" as an unsigned int.
(Fixes issue with wrong comparison of pointers across 0x8000_0000)
- Revised Stacking pass to not use negative SP offsets.
- Add pointer validity checks to Cminor ... Mach
to support the use of memory injections in Stacking.
- Cleaned up Stacklayout modules.
- IA32: improved code generation for Mgetparam.
- ARM: improved code generation for op-immediate instructions.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1632 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1603 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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- 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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AST: add ef_inline flag to external functions.
Selection: recognize calls to inlined built-ins and inline them as Sbuiltin.
CminorSel to Asm: added Sbuiltin/Ibuiltin instruction.
PrintAsm: adapted expansion of builtins.
C2Clight: adapted detection of builtins.
Conventions: refactored in a machine-independent part (backend/Conventions)
and a machine-dependent part (ARCH/SYS/Conventions1).
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1356 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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in file lib/Axioms.v.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1354 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1120 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1076 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@1015 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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Started to merge the ARM code generator.
Started to add support for PowerPC/EABI.
Use ocamlbuild to construct executable from Caml files.
git-svn-id: https://yquem.inria.fr/compcert/svn/compcert/trunk@930 fca1b0fc-160b-0410-b1d3-a4f43f01ea2e
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