[PATCH] D46990: [Fixed Point Arithmetic] Validation Test for Saturated Multiplication

[Leonard Chan via Phabricator via cfe-commits]

leonardchan created this revision.
leonardchan added reviewers: phosek, mcgrathr, jakehehrlich.
leonardchan added a project: clang.

This patch contains changes for multiplication on saturated _Fract types.

Since we already upcast the underlying integer for the fixed point type, we can do a simple check to see if the resulting value is larger or smaller than the max or min for the fixed point types.

This is a child of https://reviews.llvm.org/D46987


Repository:
  rC Clang

https://reviews.llvm.org/D46990

Files:
  lib/CodeGen/CGExprScalar.cpp
  test/Frontend/fixed_point_all_builtin_operations.c

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