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

Now I added all CIs for floating point comparison. Not only the ones for >,<.

And it's working.

The compiler flags I used:

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-mcustom-floatis=1 -mcustom-fixsi=2 -mcustom-fcmplts=19 -mcustom-fcmples=20 -mcustom-fcmpgts=17 -mcustom-fcmpges=18 -mcustom-fcmpeqs=16 -mcustom-fcmpnes=21

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

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But actually the reason why it didn't work, seemed not to be the missing CI for the operator >= as you assumed.

If I take a look at the *.objdump the compiler uses the CI for the operator <.

(-O3 optimization)

if ((float)a<(float)b)
        a=b;
   return a;

Becomes:

20239e0:    2143c4f2     custom    19,at,r4,r5
 20239e4:    0800021e     bne    at,zero,20239f0 <TEST_Float+0x10>
 20239e8:    2005883a     mov    r2,r4
 20239ec:    f800283a     ret
 20239f0:    2809883a     mov    r4,r5
 20239f4:    2005883a     mov    r2,r4
 20239f8:    f800283a     ret

But never mind, it's working:-)

So thanks for your guiding to a solution!

Regards