[PATCH] D59744: Fix i386 ABI "__m64" type bug

[Wei Xiao via Phabricator via cfe-commits]

wxiao3 created this revision.
wxiao3 added reviewers: annita.zhang, LuoYuanke, smaslov, craig.topper, hjl.tools.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

According to System V i386 ABI: the "__m64" type paramater and return va
passed by MMX registers. But current implementation treats "__m64" as "i
which results in parameter passing by stack and returning by EDX and EAX

This patch fixes the bug (https://bugs.llvm.org/show_bug.cgi?id=41029).


Repository:
  rC Clang

https://reviews.llvm.org/D59744

Files:
  lib/CodeGen/TargetInfo.cpp
  test/CodeGen/x86_32-arguments-linux.c
  test/CodeGen/x86_32-mmx-linux.c

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