search for: jmping

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2007 Oct 04
0
[LLVMdev] RFC: Tail call optimization X86
...testing with LLCBETAOPTION := -tail-call-opt -tail-call-opt-align-stack > Please remove -regalloc=local -fast. We want to test this patch > separately. Can you explain the advantages / disadvantages of -tail- > call-opt-align-stack? When you do tail call optimization just before calling/jmping to the callee you sometimes have to adjust the stack pointer. e.g int calller(int arg1, int arg2) { return callee(arg2, arg1, 2*arg3; } conceptually before jumping to callee the stackpointer has to be adjusted (by -4 bytes in the example). Now this can cause the stack to be misaligned (accordin...
2007 Oct 03
4
[LLVMdev] RFC: Tail call optimization X86
On Oct 2, 2007, at 2:27 AM, Arnold Schwaighofer wrote: > Hi all, > > I changed the code that checks whether a tail call is really > eligible for optimization so that it performs the check/fix in > SelectionDAGISel.cpp:BuildSelectionDAG() as suggest by Evan. Also > eliminated an error that caused the remaining failing test cases in > the test-suite. > > The