r304953 introduced a failure due to clang passing a structure by value and using fastcc

[llvmbot]

Bugzilla Link	34067
Resolution	FIXED
Resolved on	Aug 11, 2017 09:33
Version	5.0
OS	Linux
Blocks	#33196
Reporter	LLVM Bugzilla Contributor
CC	@zmodem

Extended Description

Landing r304953 introduced a failure when compiling clang with -O3 as one of the structures used by clang is passed
by value and uses the fastcc calling convention.

The change has been reverted on ToT as:

---

r310057 | smaksimovic | 2017-08-04 14:37:34 +0200 (Fri, 04 Aug 2017) | 8 lines

Revert r304953 for release 5.0.0

This is causing failures when compiling clang with -O3
as one of the structures used by clang is passed by
value and uses the fastcc calling convention.

Faliures manifest for stage2 mips build.

This needs to be cherry-picked for 5.0.0 release.

[llvmbot]

Hans, can you merge this? Thanks.

[zmodem]

r310074. Thanks!

[llvmbot]

I reported the wrong commit to Petar that caused the issue, testing the reversion of the problematic commit again. Apologies for the noise.

[llvmbot]

Two patches should be merged to fix this issue:

1. r310702 - reverts wrongly reverted change (that got cherry-picked for 5.0 release)
2. r310704 - reverts the problematic patch

[zmodem]

Two patches should be merged to fix this issue:

1. r310702 - reverts wrongly reverted change (that got cherry-picked for 5.0
   release)

I've performed the same revert on the branch (r310726).

2. r310704 - reverts the problematic patch

Merged in r310728.