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Altera_Forum
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15 years ago

Custom Instructions: Single-precision -mcustom-* compiler options

Hi, we have a couple of custom instructions (CI) for single precision floating point computing. Including <, >, <= ,int2float, float2int and all that. You can tell the compiler to use the ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Oops I said that wrong. A < B is equivalent to B >= A. Try passing in the flag for greater than or equal and see if the objdump contains the custom instruction mnemonic.

So I think your "if (a<b)" is being turned into "if(b>=a)" by the compiler.