Hi,
Following is the tree dump of 094t.pre for a test program.
Question is loads of D.5375_12/D.5375_14 are redundant on path <bb2,
bb7, bb5, bb6>,
but why not lowered into basic block 3, where it is used.
BTW, seems no tree pass handles this case currently.
Any idea? Thanks
int z$imag;
int z$real;
int D.5378;
int D.5377;
int D.5376;
int D.5375;
<bb 2>:
D.5375_11 = REALPART_EXPR <g2>;
D.5376_12 = IMAGPART_EXPR <g2>;
D.5377_13 = REALPART_EXPR <g3>;
D.5378_14 = IMAGPART_EXPR <g3>;
if (D.5375_11 == D.5377_13)
goto <bb 3>;
else
goto <bb 7>;
<bb 3>:
if (D.5376_12 == D.5378_14)
goto <bb 4>;
else
goto <bb 7>;
<bb 4>:
z$real_15 = REALPART_EXPR <g1>;
z$imag_16 = IMAGPART_EXPR <g1>;
goto <bb 6>;
<bb 7>:
<bb 5>:
z$real_17 = REALPART_EXPR <g4>;
z$imag_18 = IMAGPART_EXPR <g4>;
<bb 6>:
# z$real_19 = PHI <z$real_15(4), z$real_17(5)>
# z$imag_20 = PHI <z$imag_16(4), z$imag_18(5)>
REALPART_EXPR <g1> = z$real_19;
IMAGPART_EXPR <g1> = z$imag_20;
return 0;
--
Best Regards.
