tree b2d7c0701f079b1688effbf1555ef479c6609240
parent 1c21fb62803a9f85d28d1eeaab9ecae30fd2ba90
author Reid Kleckner <reid@kleckner.net> 1432627762 +0800
committer Andrew Hsieh <andrewhsieh@google.com> 1432627762 +0800

[X86] Always return the sret parameter in eax/rax, even on 32-bit

Summary:
This rule was always in the old SysV i386 ABI docs and the new ones that
H.J. Lu has put together, but we never noticed:

EAX   scratch register; also used to return integer and pointer values
      from functions; also stores the address of a returned struct or union

Fixes PR23491.

Reviewers: majnemer

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D9715

Change-Id: Iee9c022600e3df39560ad07b61ebce37501451c5