Jakob Stoklund Olesen a043b62870 Allow missing kill flags on an untied operand of a two-address instruction when ...

the operand uses the same register as a tied operand:

  %r1 = add %r1, %r1

If add were a three-address instruction, kill flags would be required on at
least one of the uses. Since it is a two-address instruction, the tied use
operand must not have a kill flag.

This change makes the kill flag on the untied use operand optional.

llvm-svn: 122082

2010-12-17 19:18:41 +00:00

40 KiB

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