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Re-implement CMP instructions with immediate destination #6

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madhusudancs opened this issue Jun 2, 2012 · 0 comments
Open

Re-implement CMP instructions with immediate destination #6

madhusudancs opened this issue Jun 2, 2012 · 0 comments
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codegen regalloc

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@madhusudancs
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In x86 all the destinations are generally either registers or memory locations (In very few cases only registers are allowed). In some cases, CMP instruction gets an immediate operand. Currently a move instruction (move to a temporary scratch register %r15) is inserted in this case. However we can do much better if we can swap the operands. But that also means that we need to complement the following branch instruction. This should be implemented.
@ghost ghost assigned madhusudancs Jun 2, 2012
madhusudancs added a commit that referenced this issue Jun 3, 2012
@madhusudancs
Handle the CMP instruction code generator when the destination operan…
4d2a42e 
…d is immediate.

This needs to be fixed. See issue #6.
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