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* [ThinLTO] Add option to disable readonly/writeonly attribute propagationTeresa Johnson2019-12-051-0/+7
| | | | | | | | | | | | | | | | | | | | | Summary: Add an option to allow the attribute propagation on the index to be disabled, to allow a workaround for issues (such as that fixed by D70977). Also move the setting of the WithAttributePropagation flag on the index into propagateAttributes(), and remove some old stale code that predated this flag and cleared the maybe read/write only bits when we need to disable the propagation (previously only when importing disabled, now also when the new option disables it). Reviewers: evgeny777, steven_wu Subscribers: mehdi_amini, inglorion, hiraditya, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70984
* [ThinLTO] Fix importing of writeonly variables in distributed ThinLTOTeresa Johnson2019-12-041-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | Summary: D69561/dde5893 enabled importing of readonly variables with references, however, it introduced a bug relating to importing/internalization of writeonly variables with references. A fix for this was added in D70006/7f92d66. But this didn't work in distributed ThinLTO mode. The reason is that the fix (importing the writeonly var with a zeroinitializer) was only applied when there were references on the writeonly var summary. In distributed ThinLTO mode, where we only have a small slice of the index, we will not have the references on the importing side if we are not importing those referenced values. Rather than changing this handshaking (which will require a lot of other changes, since that's how we know what to import in the distributed backend clang invocation), we can simply always give the writeonly variable a zero initializer. Reviewers: evgeny777, steven_wu Subscribers: mehdi_amini, inglorion, hiraditya, dexonsmith, arphaman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D70977
* Reland "Change the X86 datalayout to add three address spacesAmy Huang2019-09-101-1/+1
| | | | | | | | | | for 32 bit signed, 32 bit unsigned, and 64 bit pointers." This reverts 57076d3199fc2b0af4a3736b7749dd5462cacda5. Original review at https://reviews.llvm.org/D64931. Review for added fix at https://reviews.llvm.org/D66843. llvm-svn: 371568
* Revert "Change the X86 datalayout to add three address spaces for 32 bit ↵Vlad Tsyrklevich2019-08-281-1/+1
| | | | | | | | | signed," This reverts commit r370083 because it caused check-lld failures on sanitizer-x86_64-linux-fast. llvm-svn: 370142
* Change the X86 datalayout to add three address spaces for 32 bit signed,Amy Huang2019-08-271-1/+1
| | | | | | 32 bit unsigned, and 64 bit pointers. llvm-svn: 370083
* [ThinLTO] Attempt to recommit r365188 after alignment fixEugene Leviant2019-07-051-0/+41
| | | | llvm-svn: 365215
* Reverted r365188 due to alignment problems on i686-androidEugene Leviant2019-07-051-41/+0
| | | | llvm-svn: 365206
* [ThinLTO] Attempt to recommit r365040 after caching fixEugene Leviant2019-07-051-0/+41
| | | | | | | | | | | | | | It's possible that some function can load and store the same variable using the same constant expression: store %Derived* @foo, %Derived** bitcast (%Base** @bar to %Derived**) %42 = load %Derived*, %Derived** bitcast (%Base** @bar to %Derived**) The bitcast expression was mistakenly cached while processing loads, and never examined later when processing store. This caused @bar to be mistakenly treated as read-only variable. See load-store-caching.ll. llvm-svn: 365188
* Revert [ThinLTO] Optimize writeonly globals outReid Kleckner2019-07-041-41/+0
| | | | | | | | | This reverts r365040 (git commit 5cacb914758c7f436b47c8362100f10cef14bbc4) Speculatively reverting, since this appears to have broken check-lld on Linux. Partial analysis in https://crbug.com/981168. llvm-svn: 365097
* [ThinLTO] Optimize writeonly globals outEugene Leviant2019-07-031-0/+41
Differential revision: https://reviews.llvm.org/D63444 llvm-svn: 365040
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