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Trying again with the code changes (and not just the new test).
Summary:
This patch fixes the offsets of fields in the stack frame linkage save
area for AIX.
Reviewers: sfertile, hubert.reinterpretcast, jasonliu, Xiangling_L, xingxue, ZarkoCA, daltenty
Reviewed By: hubert.reinterpretcast
Subscribers: wuzish, nemanjai, hiraditya, kbarton, MaskRay, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D64424
Patch by Chris Bowler!
llvm-svn: 368721
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Adds machine operand lowering for MCSymbolSDNodes to the PowerPC
backend. This is needed to produce call instructions in assembly for AIX
because the callee operand is a MCSymbolSDNode. The test is XFAIL'ed for
asserts due to a (valid) assertion in PEI that the AIX ABI isn't supported yet.
Differential Revision: https://reviews.llvm.org/D63738
llvm-svn: 367133
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Summary:
(1) Function descriptor on AIX
On AIX, a called routine may have 2 distinct symbols associated with it:
* A function descriptor (Name)
* A function entry point (.Name)
The descriptor structure on AIX is the same as those in the ELF V1 ABI:
* The address of the entry point of the function.
* The TOC base address for the function.
* The environment pointer.
The descriptor symbol uses the same name as the source level function in C.
The function entry point is analogous to the symbol we would generate for a
function in a non-descriptor-based ABI, except that it is renamed by
prepending a ".".
Which symbol gets referenced depends on the context:
* Taking the address of the function references the descriptor symbol.
* Calling the function references the entry point symbol.
(2) Speaking of implementation on AIX, for direct function call target, we
create proper MCSymbol SDNode(e.g . ".foo") while constructing SDAG to
replace original TargetGlobalAddress SDNode. Then down the path, we can
take advantage of this MCSymbol.
Patch by: Xiangling_L
Reviewed by: sfertile, hubert.reinterpretcast, jasonliu, syzaara
Differential Revision: https://reviews.llvm.org/D62532
llvm-svn: 362735
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Summary:
This patch implements SDAG call lowering on AIX for functions
which only have parameters that could fit into GPRs.
Reviewers: hubert.reinterpretcast, syzaara
Differential Revision: https://reviews.llvm.org/D62823
llvm-svn: 362708
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Summary:dd
This patch implements call lowering for calls without parameters
on AIX as initial support.
Reviewers: sfertile, hubert.reinterpretcast, aheejin, efriedma
Differential Revision: https://reviews.llvm.org/D61948
llvm-svn: 361669
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