Backport fix for i686 bug#26

Merged

alexcrichton merged 1 commit intorust-lang:rustc/9.0-2019-09-19from

mati865:i686-fix-backport

Nov 11, 2019

Commits on Nov 11, 2019

convertToThreeAddress, make sure second operand of SUB32ri is really an immediate before calling getImm().

topperc
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mati865
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