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Pat Gavlin 5c7f7462e4 Extend the statepoint intrinsic to allow statepoints to be marked as transitions from GC-aware code to code that is not GC-aware. 
This changes the shape of the statepoint intrinsic from:

  @llvm.experimental.gc.statepoint(anyptr target, i32 # call args, i32 unused, ...call args, i32 # deopt args, ...deopt args, ...gc args)

to:

  @llvm.experimental.gc.statepoint(anyptr target, i32 # call args, i32 flags, ...call args, i32 # transition args, ...transition args, i32 # deopt args, ...deopt args, ...gc args)

This extension offers the backend the opportunity to insert (somewhat) arbitrary code to manage the transition from GC-aware code to code that is not GC-aware and back.

In order to support the injection of transition code, this extension wraps the STATEPOINT ISD node generated by the usual lowering lowering with two additional nodes: GC_TRANSITION_START and GC_TRANSITION_END. The transition arguments that were passed passed to the intrinsic (if any) are lowered and provided as operands to these nodes and may be used by the backend during code generation.

Eventually, the lowering of the GC_TRANSITION_{START,END} nodes should be informed by the GC strategy in use for the function containing the intrinsic call; for now, these nodes are instead replaced with no-ops.

Differential Revision: http://reviews.llvm.org/D9501

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@236888 91177308-0d34-0410-b5e6-96231b3b80d8
2015-05-08 18:07:42 +00:00
..
2002-04-13-RetTypes.ll
2002-11-05-GetelementptrPointers.ll
2004-05-21-SwitchConstantMismatch.ll
2006-07-11-StoreStruct.ll
2006-10-15-AddrLabel.ll
2006-12-12-IntrinsicDefine.ll
2007-12-21-InvokeParamAttrs.ll
2008-01-11-VarargAttrs.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
2008-03-01-AllocaSized.ll
2008-08-22-MemCpyAlignment.ll
2008-11-15-RetVoid.ll
2009-05-29-InvokeResult1.ll
2009-05-29-InvokeResult2.ll
2009-05-29-InvokeResult3.ll
2010-08-07-PointerIntrinsic.ll
alias.ll
AmbiguousPhi.ll
bitcast-address-space-nested-global-cycle.ll
bitcast-address-space-nested-global.ll
bitcast-address-space-through-constant-inttoptr-inside-gep-instruction.ll
bitcast-address-space-through-constant-inttoptr.ll
bitcast-address-space-through-gep-2.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
bitcast-address-space-through-gep.ll [opaque pointer type] Add textual IR support for explicit type parameter to gep operator 2015-03-13 18:20:45 +00:00
bitcast-address-space-through-inttoptr.ll
bitcast-address-spaces.ll
bitcast-alias-address-space.ll
bitcast-vector-pointer-as.ll
byval-1.ll
byval-4.ll
comdat2.ll
comdat3.ll
comdat.ll
cttz-undef-arg.ll
dbg-typerefs.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
dbg.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
dominates.ll
fpmath.ll
frameescape.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
gcread-ptrptr.ll
gcroot-alloca.ll
gcroot-meta.ll
gcroot-ptrptr.ll
gcwrite-ptrptr.ll
global-ctors.ll
ident-meta1.ll
ident-meta2.ll
ident-meta3.ll
ident-meta4.ll
inalloca1.ll
inalloca2.ll
inalloca3.ll
inalloca-vararg.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
invalid-statepoint2.ll Extend the statepoint intrinsic to allow statepoints to be marked as transitions from GC-aware code to code that is not GC-aware. 2015-05-08 18:07:42 +00:00
invalid-statepoint.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
invoke.ll
jumptable.ll
llvm.compiler_used-invalid-type.ll
llvm.dbg.declare-address.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.declare-expression.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.declare-variable.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.intrinsic-dbg-attachment.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.value-expression.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.value-value.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.dbg.value-variable.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
llvm.used-invalid-init2.ll
llvm.used-invalid-init.ll
llvm.used-invalid-type2.ll
llvm.used-invalid-type.ll
llvm.used-ptr-type.ll
mdcompositetype-templateparams-tuple.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
mdcompositetype-templateparams.ll IR: Give 'DI' prefix to debug info metadata 2015-04-29 16:38:44 +00:00
memcpy.ll
module-flags-1.ll
module-flags-2.ll
module-flags-3.ll
musttail-invalid.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
musttail-valid.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00
PhiGrouping.ll
range-1.ll
range-2.ll
README.txt
recursive-struct-param.ll Fix an infinite recursion in the verifier caused by calling isSized on a recursive type. 2015-03-13 06:41:26 +00:00
recursive-type-1.ll
recursive-type-2.ll
recursive-type-3.ll
SelfReferential.ll
sret.ll
statepoint.ll Extend the statepoint intrinsic to allow statepoints to be marked as transitions from GC-aware code to code that is not GC-aware. 2015-05-08 18:07:42 +00:00
varargs-intrinsic.ll [opaque pointer type] Add textual IR support for explicit type parameter to the call instruction 2015-04-16 23:24:18 +00:00

README.txt 

This directory contains testcases that the verifier is supposed to detect as
malformed LLVM code.  Testcases for situations that the verifier incorrectly
identifies as malformed should go in the test/Assembler directory.