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Mostly d -> g (matching DynFlag -> GeneralFlag).
Also renamed if* to when*, matching the Haskell if/when names
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The main change here is that the Cmm parser now allows high-level cmm
code with argument-passing and function calls. For example:
foo ( gcptr a, bits32 b )
{
if (b > 0) {
// we can make tail calls passing arguments:
jump stg_ap_0_fast(a);
}
return (x,y);
}
More details on the new cmm syntax are in Note [Syntax of .cmm files]
in CmmParse.y.
The old syntax is still more-or-less supported for those occasional
code fragments that really need to explicitly manipulate the stack.
However there are a couple of differences: it is now obligatory to
give a list of live GlobalRegs on every jump, e.g.
jump %ENTRY_CODE(Sp(0)) [R1];
Again, more details in Note [Syntax of .cmm files].
I have rewritten most of the .cmm files in the RTS into the new
syntax, except for AutoApply.cmm which is generated by the genapply
program: this file could be generated in the new syntax instead and
would probably be better off for it, but I ran out of enthusiasm.
Some other changes in this batch:
- The PrimOp calling convention is gone, primops now use the ordinary
NativeNodeCall convention. This means that primops and "foreign
import prim" code must be written in high-level cmm, but they can
now take more than 10 arguments.
- CmmSink now does constant-folding (should fix #7219)
- .cmm files now go through the cmmPipeline, and as a result we
generate better code in many cases. All the object files generated
for the RTS .cmm files are now smaller. Performance should be
better too, but I haven't measured it yet.
- RET_DYN frames are removed from the RTS, lots of code goes away
- we now have some more canned GC points to cover unboxed-tuples with
2-4 pointers, which will reduce code size a little.
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I've switched to passing DynFlags rather than Platform, as (a) it's
simpler to not have to extract targetPlatform in so many places, and
(b) it may be useful to have DynFlags around in future.
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It's now just 'dopt Opt_Ticky'
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All the flags that 'ways' imply are now dynamic
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* origin/master: (756 commits)
don't crash if argv[0] == NULL (#7037)
-package P was loading all versions of P in GHCi (#7030)
Add a Note, copying text from #2437
improve the --help docs a bit (#7008)
Copy Data.HashTable's hashString into our Util module
Build fix
Build fixes
Parse error: suggest brackets and indentation.
Don't build the ghc DLL on Windows; works around trac #5987
On Windows, detect if DLLs have too many symbols; trac #5987
Add some more Integer rules; fixes #6111
Fix PA dfun construction with silent superclass args
Add silent superclass parameters to the vectoriser
Add silent superclass parameters (again)
Mention Generic1 in the user's guide
Make the GHC API a little more powerful.
tweak llvm version warning message
New version of the patch for #5461.
Fix Word64ToInteger conversion rule.
Implemented feature request on reconfigurable pretty-printing in GHCi (#5461)
...
Conflicts:
compiler/basicTypes/UniqSupply.lhs
compiler/cmm/CmmBuildInfoTables.hs
compiler/cmm/CmmLint.hs
compiler/cmm/CmmOpt.hs
compiler/cmm/CmmPipeline.hs
compiler/cmm/CmmStackLayout.hs
compiler/cmm/MkGraph.hs
compiler/cmm/OldPprCmm.hs
compiler/codeGen/CodeGen.lhs
compiler/codeGen/StgCmm.hs
compiler/codeGen/StgCmmBind.hs
compiler/codeGen/StgCmmLayout.hs
compiler/codeGen/StgCmmUtils.hs
compiler/main/CodeOutput.lhs
compiler/main/HscMain.hs
compiler/nativeGen/AsmCodeGen.lhs
compiler/simplStg/SimplStg.lhs
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This is done by a 'unarisation' pre-pass at the STG level which
translates away all (live) binders binding something of unboxed
tuple type.
This has the following knock-on effects:
* The subkind hierarchy is vastly simplified (no UbxTupleKind or ArgKind)
* Various relaxed type checks in typechecker, 'foreign import prim' etc
* All case binders may be live at the Core level
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When they existed, they were getting included in the includes_H_FILES
variable (as it uses wildcard to find all header files). But the
.depends files for the programs that generate the headers depend on
$(includes_H_FILES), so the .depends files looked out-of-date once the
headers had been created. This caused unnecessary make reinvocations.
So now we put them in dist* directories, where they ought to be anyway.
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We only use it for "compiler" sources, i.e. not for libraries.
Many modules have a -fno-warn-tabs kludge for now.
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And some knock-on changes
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* Move CgRep (private to old codgen) from SMRep to ClosureInfo
* Avoid using CgRep in new codegen
* Move SMRep and Bitmap from codeGen/ to cmm/
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them to TcType
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This changes the new code generator to make use of the Hoopl package
for dataflow analysis. Hoopl is a new boot package, and is maintained
in a separate upstream git repository (as usual, GHC has its own
lagging darcs mirror in http://darcs.haskell.org/packages/hoopl).
During this merge I squashed recent history into one patch. I tried
to rebase, but the history had some internal conflicts of its own
which made rebase extremely confusing, so I gave up. The history I
squashed was:
- Update new codegen to work with latest Hoopl
- Add some notes on new code gen to cmm-notes
- Enable Hoopl lag package.
- Add SPJ note to cmm-notes
- Improve GC calls on new code generator.
Work in this branch was done by:
- Milan Straka <fox@ucw.cz>
- John Dias <dias@cs.tufts.edu>
- David Terei <davidterei@gmail.com>
Edward Z. Yang <ezyang@mit.edu> merged in further changes from GHC HEAD
and fixed a few bugs.
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The type of the CmmLabel ctor is now
CmmLabel :: PackageId -> FastString -> CmmLabelInfo -> CLabel
- When you construct a CmmLabel you have to explicitly say what
package it is in. Many of these will just use rtsPackageId, but
I've left it this way to remind people not to pretend labels are
in the RTS package when they're not.
- When parsing a Cmm file, labels that are not defined in the
current file are assumed to be in the RTS package.
Labels imported like
import label
are assumed to be in a generic "foreign" package, which is different
from the current one.
Labels imported like
import "package-name" label
are marked as coming from the named package.
This last one is needed for the integer-gmp library as we want to
refer to labels that are not in the same compilation unit, but
are in the same non-rts package.
This should help remove the nasty #ifdef __PIC__ stuff from
integer-gmp/cbits/gmp-wrappers.cmm
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We used to use StaticFlags
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We were looking at opt_DoTickyProfiling, and if it was set claling ifTicky
which looks at opt_DoTickyProfiling itself.
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This merge does not turn on the new codegen (which only compiles
a select few programs at this point),
but it does introduce some changes to the old code generator.
The high bits:
1. The Rep Swamp patch is finally here.
The highlight is that the representation of types at the
machine level has changed.
Consequently, this patch contains updates across several back ends.
2. The new Stg -> Cmm path is here, although it appears to have a
fair number of bugs lurking.
3. Many improvements along the CmmCPSZ path, including:
o stack layout
o some code for infotables, half of which is right and half wrong
o proc-point splitting
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