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Derek Schuff
32b33c2c30
Use movw/movt instead of constant pool loads to lower byval parameter copies
Summary: The ARM backend can use a loop to implement copying byval parameters before a call. In non-thumb2 mode it uses a constant pool load to materialize the trip count. For targets that need movt instead (e.g. Native Client), use the same code as in thumb2 mode to materialize the trip count. Reviewers: jfb, t.p.northover Differential Revision: http://reviews.llvm.org/D8442 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@233324 91177308-0d34-0410-b5e6-96231b3b80d8
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