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6 Commits

Author SHA1 Message Date
Lang Hames e1fd99c197 [Orc] Add stack-realignment code to the i386 resolver function. 
The resolver uses the fxsave/fxrstor instructions, which require 16-byte
alignment, to save SSE state to the stack. Since 16-byte alignment can't be
assumed on all OSes (and all i386 OSes share this function) - add code to
automatically bump the alignment to 16-bytes on entry to the function.

llvm-svn: 261503
 2016-02-21 22:50:26 +00:00
Lang Hames 4f8194e81d [Orc] Add lazy-JITting support for i386. 
This patch adds a new class, OrcI386, which contains the hooks needed to
support lazy-JITing on i386 (currently only for Pentium 2 or above, as the JIT
re-entry code uses the FXSAVE/FXRSTOR instructions).

Support for i386 is enabled in the LLI lazy JIT and the Orc C API, and
regression and unit tests are enabled for this architecture.

llvm-svn: 260338
 2016-02-10 01:02:33 +00:00
Lang Hames 120a9b418b [Orc] Slightly improve the x86-64 resolver block machine code. 
Replace leaq + movq of a pointer with a single movabsq.

llvm-svn: 259968
 2016-02-06 00:55:08 +00:00
Lang Hames d677fa8332 [Orc] Fix a typo in the comments for the x86_64 resolver block. 
llvm-svn: 259953
 2016-02-05 23:27:48 +00:00
Lang Hames e28b118be0 [Orc] Turn OrcX86_64::IndirectStubsInfo into a template helper class: 
GenericIndirectStubsInfo.

This will allow architecture support classes for other architectures to re-use
this code.

llvm-svn: 259549
 2016-02-02 19:31:15 +00:00
Lang Hames 70b2406f78 [Orc] Rename OrcTargetSupport to OrcArchitectureSupport to avoid confusion with 
the upcoming remote-target support classes.

llvm-svn: 257302
 2016-01-11 00:56:15 +00:00