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3 Commits

Author SHA1 Message Date
Tim Northover a8aa168ce3 Reapply: IR: add optional type to 'byval' function parameters 
When we switch to opaque pointer types we will need some way to describe
how many bytes a 'byval' parameter should occupy on the stack. This adds
a (for now) optional extra type parameter.

If present, the type must match the pointee type of the argument.

The original commit did not remap byval types when linking modules, which broke
LTO. This version fixes that.

Note to front-end maintainers: if this causes test failures, it's probably
because the "byval" attribute is printed after attributes without any parameter
after this change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362128 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-05-30 18:48:23 +00:00
Tim Northover 3d26f10b85 Revert "IR: add optional type to 'byval' function parameters" 
The IRLinker doesn't delve into the new byval attribute when mapping types, and
this breaks LTO.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362029 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-05-29 20:46:38 +00:00
Tim Northover aef2b1ac1a IR: add optional type to 'byval' function parameters 
When we switch to opaque pointer types we will need some way to describe
how many bytes a 'byval' parameter should occupy on the stack. This adds
a (for now) optional extra type parameter.

If present, the type must match the pointee type of the argument.

Note to front-end maintainers: if this causes test failures, it's probably
because the "byval" attribute is printed after attributes without any parameter
after this change.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362012 91177308-0d34-0410-b5e6-96231b3b80d8
 2019-05-29 19:12:48 +00:00