[LLVMdev] [LLVMDev] Is there any way to eliminate zero-extension instruction?

minwook Ahn minwook.ahn at gmail.com
Tue Jan 19 23:55:30 PST 2010

Dear developers.

We try to make our own backend of llvm for our target machine.

Assume that we have the following code in our source code.

int i = ( a < b );

The code is translated into

r0 <- gt r1 r2
r3 <- and r0 0x1

We think that r3 is not necessary. Is there any way to eliminate it by just

our backend?

Thank you in advance.

Minwook Ahn
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