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X87: Revert of [turbofan] Take the immediate size in account when nar…
…rowing ia32/x64 word comparison operators. (patchset #1 id:1 of https://codereview.chromium.org/1968453002/ ). port 767c34d (r36413) original commit message: Reason for revert: Breaks a KCS demo: BUG=chromium:611976 Original issue's description: > [turbofan] Take the immediate size in account when narrowing ia32/x64 word comparison operators. > > Trying to re-land http://crrev.com/1948453002 after fixing assembler-x64.cc in http://crrev.com/1962563003. > > Before this patch, we would emit a cmp or test with a memory operand only if both of the operands in the IR were loads. Now if either of them is a load and the other one is an immediate, we can use > > Committed: https://crrev.com/2da70f853d7f680d491c37c72d5ef04a85497ba9 > Cr-Commit-Position: refs/heads/master@{#36136} Review-Url: https://codereview.chromium.org/2003273002 Cr-Commit-Position: refs/heads/master@{#36456}
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