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This removes the OldCmm data type and the CmmCvt pass that converts
new Cmm to OldCmm. The backends (NCGs, LLVM and C) have all been
converted to consume new Cmm.
The main difference between the two data types is that conditional
branches in new Cmm have both true/false successors, whereas in OldCmm
the false case was a fallthrough. To generate slightly better code we
occasionally need to invert a conditional to ensure that the
branch-not-taken becomes a fallthrough; this was previously done in
CmmCvt, and it is now done in CmmContFlowOpt.
We could go further and use the Hoopl Block representation for native
code, which would mean that we could use Hoopl's postorderDfs and
analyses for native code, but for now I've left it as is, using the
old ListGraph representation for native code.
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All Cmm procedures now include the set of global registers that are live on
procedure entry, i.e., the global registers used to pass arguments to the
procedure. Only global registers that are use to pass arguments are included in
this list.
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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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* 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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