llvm-project/llvm/test/Feature
Maksim Panchenko cce239c45d HHVM calling conventions.
HHVM calling convention, hhvmcc, is used by HHVM JIT for
functions in translated cache. We currently support LLVM back end to
generate code for X86-64 and may support other architectures in the
future.

In HHVM calling convention any GP register could be used to pass and
return values, with the exception of R12 which is reserved for
thread-local area and is callee-saved. Other than R12, we always
pass RBX and RBP as args, which are our virtual machine's stack pointer
and frame pointer respectively.

When we enter translation cache via hhvmcc function, we expect
the stack to be aligned at 16 bytes, i.e. skewed by 8 bytes as opposed
to standard ABI alignment. This affects stack object alignment and stack
adjustments for function calls.

One extra calling convention, hhvm_ccc, is used to call C++ helpers from
HHVM's translation cache. It is almost identical to standard C calling
convention with an exception of first argument which is passed in RBP
(before we use RDI, RSI, etc.)

Differential Revision: http://reviews.llvm.org/D12681

llvm-svn: 248832
2015-09-29 22:09:16 +00:00
..
NamedMDNode.ll IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
NamedMDNode2.ll IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
README.txt
alias2.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
aliases.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
alignment.ll
attributes.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
basictest.ll
callingconventions.ll HHVM calling conventions. 2015-09-29 22:09:16 +00:00
calltest.ll Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
casttest.ll
cfgstructures.ll
cold.ll
comdat.ll [opaque pointer type] Add textual IR support for explicit type parameter for global aliases 2015-09-11 03:22:04 +00:00
const_pv.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
constexpr.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
constpointer.ll
escaped_label.ll
exception.ll [WinEH] Add cleanupendpad instruction 2015-09-03 09:09:43 +00:00
float.ll
fold-fpcast.ll
forwardreftest.ll
global_pv.ll
global_section.ll
globalredefinition3.ll
globalvars.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
indirectcall.ll
indirectcall2.ll
inlineasm.ll
instructions.ll [IR] Make {extract,insert}element accept an index of any integer type. 2014-05-01 22:12:39 +00:00
intrinsic-noduplicate.ll Expose "noduplicate" attribute as a property for intrinsics. 2014-03-18 23:51:07 +00:00
intrinsics.ll
load_module.ll
md_on_instruction.ll Rewrite test/Feature/md_on_instruction.ll 2015-03-20 18:34:53 +00:00
memorymarkers.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
metadata.ll IR: Make metadata typeless in assembly 2014-12-15 19:07:53 +00:00
minsize_attr.ll
newcasts.ll
optnone-llc.ll Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
optnone-opt.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
optnone.ll Make the default triple optional by allowing an empty string 2015-09-16 05:34:32 +00:00
packed.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
packed_struct.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
paramattrs.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
ppcld.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
prefixdata.ll
prologuedata.ll Prologue support 2014-12-03 02:08:38 +00:00
properties.ll
prototype.ll
recursivetype.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
seh-nounwind.ll Move the personality function from LandingPadInst to Function 2015-06-17 20:52:32 +00:00
simplecalltest.ll
small.ll
smallest.ll
sparcld.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
terminators.ll
testalloca.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
testconstants.ll [opaque pointer type] Add textual IR support for explicit type parameter to getelementptr instruction 2015-02-27 19:29:02 +00:00
testlogical.ll
testtype.ll
testvarargs.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
undefined.ll
unreachable.ll
varargs.ll
varargs_new.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
vector-cast-constant-exprs.ll
weak_constant.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00
weirdnames.ll
x86ld.ll [opaque pointer type] Add textual IR support for explicit type parameter to load instruction 2015-02-27 21:17:42 +00:00

README.txt

This directory contains test cases for individual source features of LLVM.
It is designed to make sure that the major components of LLVM support all of the
features of LLVM, for very small examples.  Entire programs should not go here.

Regression tests for individual bug fixes should go into the test/Regression dir.