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6 commits

Author SHA1 Message Date
Eduard-Mihai Burtescu
d455955445 rustc: don't unpack newtypes of scalar-pairs with mismatched alignment. 2017-12-02 00:29:56 +02:00
Eduard-Mihai Burtescu
88e4d2c291 rustc_trans: work around i686-pc-windows-msvc byval align LLVM bug. 2017-11-19 17:58:38 +02:00
Eduard-Mihai Burtescu
cdeb4b0d25 rustc: encode scalar pairs in layout ABI. 2017-11-19 02:43:32 +02:00
Eduard-Mihai Burtescu
f8d5d0c30c rustc_trans: compute better align/dereferenceable attributes from pointees. 2017-11-19 02:14:33 +02:00
Ariel Ben-Yehuda
32c9893432 emit !align attributes on stores of operand pairs 
cc #40373
 2017-03-13 11:52:41 +02:00
Ariel Ben-Yehuda
09825de61b emit "align 1" metadata on loads/stores of packed structs 
According to the LLVM reference:
> A value of 0 or an omitted align argument means that the operation has
the ABI alignment for the target.

So loads/stores of fields of packed structs need to have their align set
to 1. Implement that by tracking the alignment of `LvalueRef`s.

Fixes #39376.
 2017-02-08 22:23:21 +01:00