[PATCH] D21739: [TLI] Add functions determining if int parameters/returns should be zeroext/signext.

[Marcin Kościelnicki via llvm-commits]

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On some architectures (s390x, ppc64, sparc64), C-level int is passed
as i32 signext instead of plain i32 (and unsigned likewise as i32 zeroext).
Add this information to TargetLibraryInfo, to be used whenever some LLVM
pass inserts a compiler-rt call to a function involving int parameters
or returns.

Repository:
  rL LLVM

http://reviews.llvm.org/D21739

Files:
  include/llvm/Analysis/TargetLibraryInfo.h
  lib/Analysis/TargetLibraryInfo.cpp

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