Unify internal code generation to make better use of GHC calling convention.
Ideally, it would just work on Windows as well, but some random bug appeared.
This bug was causing freezes on SPU LLVM compilation.
This commit desperately attempts to workaround it.
- Multiple header files where missing #includes to other headers that
where used in the header. Correct header was included in correct
order in source files which caused everything to compile.
- Added missing #includes so header files correctly include all their
dependencies and fixes problems with IDEs being unable to parse
headers correctly due to missing symbols
Misc: fix EH frame registration (LLVM, non-Windows).
Misc: constant-folding bitcast (cpu_translator).
Misc: add syntax for LLVM arrays (cpu_translator).
Misc: use function names for proper linkage (SPU LLVM).
Changed function search and verification in Giga mode.
Basic stack frame layout analysis.
Function detection in Giga mode.
Basic use of new information in SPU LLVM.
Fixed jump table compilation in SPU LLVM.
Disable broken optimization in Accurate xfloat mode.
Make compiled SPU modules position-independent in SPU LLVM.
Optimizations include but not limited to:
* Compiling SPU functions as native functions when eligible
* Avoiding register context write-out
* Aligned stack assumption (CWD alike instruction)
Are made composable in expressions similar to arithmetic ops.
Implement noncast in addition to bitcast (no-op case).
Implement bitcast constant folding.
Fixed some misuse of sext<>.
Properly forward value categories in expression structs.
Simplify SFINAE tests (is_llvm_expr, llvm_common_t) in global operators.
Add llvm_const_int and remove llvm_add_const, llvm_sub_const, etc.
Add llvm_ord and llvm_uno for FP comparison via >=< operators.
Replace cpu_translator::fcmp with fcmp_ord and fcmp_uno.
