commit 2b336bc4fed0812db24ead970f4d1ac0562af563
author Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Jul 10 17:42:34 2010 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Sat Jul 10 17:42:34 2010 +0000
tree 0af6ab046edcf933f8cc8449a40a44725570afae
parent 5d6f892197a1223d0e9479395393c25f6a7c27c4

Don't emit st(0)/st(1) copies as FpMOV instructions. Use FpSET_ST? instead.

Based on a patch by Rafael Espíndola.

Attempt to make the FpSET_ST1 hack more robust, but we are still relying on
FpSET_ST0 preceeding it. This is only for supporting really weird x87 inline
asm.

We support:

  FpSET_ST0
  INLINEASM

  FpSET_ST0
  FpSET_ST1
  INLINEASM

with and without kills on the arguments. We don't support:

  FpSET_ST1
  FpSET_ST0
  INLINEASM

nor

  FpSET_ST1
  INLINEASM

Just Don't Do It!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108047 91177308-0d34-0410-b5e6-96231b3b80d8