Merging r339225:

Merging r339225:
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r339225 | thopre | 2018-08-08 11:35:26 +0200 (Wed, 08 Aug 2018) | 11 lines

Support inline asm with multiple 64bit output in 32bit GPR

Summary: Extend fix for PR34170 to support inline assembly with multiple output operands that do not naturally go in the register class it is constrained to (eg. double in a 32-bit GPR as in the PR).

Reviewers: bogner, t.p.northover, lattner, javed.absar, efriedma

Reviewed By: efriedma

Subscribers: efriedma, tra, eraman, javed.absar, llvm-commits

Differential Revision: https://reviews.llvm.org/D45437
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_70@339539 91177308-0d34-0410-b5e6-96231b3b80d8