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Author SHA1 Message Date
Stefan Maksimovic 4a612d4bf2 [mips] Sign extend i32 return values on MIPS64 
Override getTypeForExtReturn so that functions returning
an i32 typed value have it sign extended on MIPS64.

Also provide patterns to get rid of unneeded sign extensions
for arithmetic instructions which implicitly sign extend
their results.

Differential Revision: https://reviews.llvm.org/D48374

llvm-svn: 338019
 2018-07-26 10:59:35 +00:00
Petar Jovanovic cccc236a96 [mips] Support shrink-wrapping 
Except for -O0, it's enabled by default.

Patch by Vladimir Stefanovic.

Differential Revision: https://reviews.llvm.org/D47947

llvm-svn: 335989
 2018-06-29 16:37:16 +00:00