Jeffrey Yasskin d1ba06bf13 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! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@88984 91177308-0d34-0410-b5e6-96231b3b80d8		2009-11-16 22:41:33 +00:00
..
ExampleTests	lit: Add ExampleTests, for testing lit and demonstrating test suite features.	2009-11-10 02:41:17 +00:00
ExampleTests.ObjDir	lit: Add ExampleTests, for testing lit and demonstrating test suite features.	2009-11-10 02:41:17 +00:00
lit.py	lit: Add --repeat=N option, for running each test N times.	2009-11-15 01:02:09 +00:00
LitConfig.py	lit: Add --param NAME=VALUE option, for test suite specific use (to communicate	2009-11-05 16:27:33 +00:00
LitFormats.py	lit: Factor a new OneCommandPerFileTest out of SyntaxCheckTest.	2009-11-15 08:10:29 +00:00
ProgressBar.py
ShCommands.py	Fix typo that worked on python 2.6.	2009-09-08 05:46:28 +00:00
ShUtil.py
TclUtil.py	Fix typo that worked on python 2.6.	2009-09-08 05:46:28 +00:00
Test.py	lit: Add --repeat=N option, for running each test N times.	2009-11-15 01:02:09 +00:00
TestFormats.py	Make X86-64 in the Large model always emit 64-bit calls.	2009-11-16 22:41:33 +00:00
TestingConfig.py	lit: Preserve the PATHEXT variable when running subcommands, this is important on Win32	2009-11-08 03:35:19 +00:00
TestRunner.py	lit: Add --repeat=N option, for running each test N times.	2009-11-15 01:02:09 +00:00
TODO
Util.py	Delete a spurious semicolon.	2009-10-24 23:24:45 +00:00