Integrate r340025 into 7.0.1

[llvmbot]

Bugzilla Link	39383
Resolution	FIXED
Resolved on	Oct 25, 2018 13:41
Version	7.0
OS	Windows NT
Blocks	#38454
Reporter	LLVM Bugzilla Contributor
CC	@tstellar
Fixed by commit(s)	r340025 r345311

Extended Description

Please integrate the following change into 7.0.1 branch. This was a regression from Clang 6. Thank you!

commit 507f9cad077310d66051b8d79284e72115579be8 (HEAD -> release_70)
Author: Erich Keane erich.keane@intel.com
Date: Fri Aug 17 13:43:39 2018 +0000

Fix for bug 38508 - Don't do PCH processing when only generating preprocessor output

This clang-cl driver change removes the PCH options when we are only generating
preprocessed output. This is similar to the behavior of Y-.

Patch by: mikerice
Differential Revision: https://reviews.llvm.org/D50640


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@340025 91177308-0d34-0410-b5e6-96231b3b80d8

[llvmbot]

assigned to @tstellar

[tstellar]

Hi Richard,

Is this OK to merge to the release_70 branch?

https://reviews.llvm.org/rL340025

[zygoloid]

Looks good to merge.

[tstellar]

Merged: r345311