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For XCOFF, globals mapped into the .bss section are linked as COMMON
definitions. This behaviour is incorrect for zero initialized data, so
emit those to the .data section instead.
Differential Revision: https://reviews.llvm.org/D69528
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Summary:
We are using symbols to represent label and csect interchangeably before, and that could be a problem.
There are cases we would need to add storage mapping class to the symbol if that symbol is actually the name of a csect, but it's hard for us to figure out whether that symbol is a label or csect.
This patch intend to do the following:
1. Construct a QualName (A name include the storage mapping class)
MCSymbolXCOFF for every MCSectionXCOFF.
2. Keep a pointer to that QualName inside of MCSectionXCOFF.
3. Use that QualName whenever we need a symbol refers to that
MCSectionXCOFF.
4. Adapt the snowball effect from the above changes in
XCOFFObjectWriter.cpp.
Reviewers: xingxue, DiggerLin, sfertile, daltenty, hubert.reinterpretcast
Reviewed By: DiggerLin, daltenty
Subscribers: wuzish, nemanjai, mgorny, hiraditya, kbarton, jsji, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D69633
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Adds support for generating the XCOFF data section in object files for global variables with initialization.
Merged aix-xcoff-common.ll into aix-xcoff-data.ll.
Changed variable name charr to chrarray in the test case to test if readobj works with 8-character names.
Authored by: xingxue
Reviewers: hubert.reinterptrtcast, sfertile, jasonliu, daltenty, Xiangling_L.
Reviewed by: hubert.reinterpretcast, sfertile, daltenty.
Subscribers: DiggerLin, Wuzish, nemanjai, hiraditya, MaskRay, jsji, shchenz, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D67125
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Summary:
Adds support for generating the .data section in assembly files for global variables with a non-zero initialization. The support for writing the .data section in XCOFF object files will be added in a follow-on patch. Any relocations are not included in this patch.
Reviewers: hubert.reinterpretcast, sfertile, jasonliu, daltenty, Xiangling_L
Reviewed by: hubert.reinterpretcast
Subscribers: nemanjai, hiraditya, kbarton, MaskRay, jsji, wuzish, shchenz, DiggerLin, llvm-commits
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D66154
llvm-svn: 369869
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