Jeffrey Yasskin 0f846dbb3e Make X86-64 in the Large model always emit 64-bit calls. ... The large code model is documented at http://www.x86-64.org/documentation/abi.pdf and says that calls should assume their target doesn't live within the 32-bit pc-relative offset that fits in the call instruction. To do this, we turn off the global-address->target-global-address conversion in X86TargetLowering::LowerCall(). The first attempt at this broke the lazy JIT because it can separate the movabs(imm->reg) from the actual call instruction. The lazy JIT receives the address of the movabs as a relocation and needs to record the return address from the call; and then when that call happens, it needs to patch the movabs with the newly-compiled target. We could thread the call instruction into the relocation and record the movabs<->call mapping explicitly, but that seems to require at least as much new complication in the code generator as this change. To fix this, we make lazy functions _always_ go through a call stub. You'd think we'd only have to force lazy calls through a stub on difficult platforms, but that turns out to break indirect calls through a function pointer. The right fix for that is to distinguish between calls and address-of operations on uncompiled functions, but that's complex enough to leave for someone else to do. Another attempt at this defined a new CALL64i pseudo-instruction, which expanded to a 2-instruction sequence in the assembly output and was special-cased in the X86CodeEmitter's emitInstruction() function. That broke indirect calls in the same way as above. This patch also removes a hack forcing Darwin to the small code model. Without far-call-stubs, the small code model requires things of the JITMemoryManager that the DefaultJITMemoryManager can't provide. Thanks to echristo for lots of testing! llvm-svn: 88984		2009-11-16 22:41:33 +00:00
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ADT	Distinguish "a," from "a". The first one splits into "a" + "" and the second one into	2009-11-13 04:55:09 +00:00
ExecutionEngine	Make X86-64 in the Large model always emit 64-bit calls.	2009-11-16 22:41:33 +00:00
Support	Type.h doesn't need to #include LLVMContext.h	2009-10-27 17:08:31 +00:00
Transforms	Factor out redundancy from clone() implementations.	2009-10-27 22:16:29 +00:00
VMCore	Type.h doesn't need to #include LLVMContext.h	2009-10-27 17:08:31 +00:00
Makefile	New unit test for the cloning module, which so far only covers cloning of	2009-09-27 21:39:46 +00:00
Makefile.unittest	Remove / use flags that are now set in the Makefile.config.	2009-10-26 20:01:35 +00:00