https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109637
Andrew Macleod <amacleod at redhat dot com> changed:
What |Removed |Added
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CC| |amacleod at redhat dot com
--- Comment #2 from Andrew Macleod <amacleod at redhat dot com> ---
I think the bigger questions is why did switch conv change:
1 = s_5(D)->x;
switch (_1) <default: <L5> [INV], case 1: <L1> [INV], case 2: <L2> [INV],
case 3: <L3> [INV]>
<bb 3> :
<L1>:
goto <bb 6>; [INV]
<bb 4> :
<L2>:
goto <bb 6>; [INV]
<bb 5> :
<L3>:
<bb 6> :
# _3 = PHI <0(2), 1(3), 2(4), 3(5)>
<L5>:
return _3;
to
<bb 2> :
_1 = s_5(D)->x;
_6 = (unsigned char) _1;
_2 = _6 + 255;
if (_2 <= 2)
goto <bb 4>; [INV]
else
goto <bb 3>; [INV]
<bb 3> :
<L6>:
_10 = 0;
goto <bb 5>; [100.00%]
<bb 4> :
<L7>:
_8 = (unsigned int) _1;
_9 = (int) _1;
_7 = _9;
<bb 5> :
# _3 = PHI <_10(3), _7(4)>
<L8>:
<L5>:
return _3;
Why are we adding -1 to [0,3] ? Thats the root of this issue I think? seems
strange
