Arnold Schwaighofer f58a35e2ec Tail call optimization improvements: ... Move platform independent code (lowering of possibly overwritten arguments, check for tail call optimization eligibility) from target X86ISelectionLowering.cpp to TargetLowering.h and SelectionDAGISel.cpp. Initial PowerPC tail call implementation: Support ppc32 implemented and tested (passes my tests and test-suite llvm-test). Support ppc64 implemented and half tested (passes my tests). On ppc tail call optimization is performed if caller and callee are fastcc call is a tail call (in tail call position, call followed by ret) no variable argument lists or byval arguments option -tailcallopt is enabled Supported: * non pic tail calls on linux/darwin * module-local tail calls on linux(PIC/GOT)/darwin(PIC) * inter-module tail calls on darwin(PIC) If constraints are not met a normal call will be emitted. A test checking the argument lowering behaviour on x86-64 was added. llvm-svn: 50477		2008-04-30 09:16:33 +00:00
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llvm	Tail call optimization improvements:	2008-04-30 09:16:33 +00:00
llvm-c	Correct parameter attributes encoding for C bindings.	2008-04-28 21:48:04 +00:00