Where is the definition of x_n(D) in GIMPLE?
I generated GIMPLE code from C code with GCC's -fdump-tree-optimized, and found that there exists a SSA variable which does not have its definition:
f (int cond)
int _1;
<bb 2> [100.00%]:
if (cond_2(D) != 0)
goto <bb 4>; [46.00%]
else
goto <bb 3>; [54.00%]
<bb 3> [54.00%]:
<bb 4> [100.00%]:
# _1 = PHI <10(2), 20(3)>
return _1;
Is definition of cond_2(D) hidden?
Is there any internal data structure in GCC which maintains the definition of cond_2(D)?
The input C program is as follows:
int f(int cond)
if (cond)
return 10;
else
return 20;
gcc gimple
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
add a comment |
I generated GIMPLE code from C code with GCC's -fdump-tree-optimized, and found that there exists a SSA variable which does not have its definition:
f (int cond)
int _1;
<bb 2> [100.00%]:
if (cond_2(D) != 0)
goto <bb 4>; [46.00%]
else
goto <bb 3>; [54.00%]
<bb 3> [54.00%]:
<bb 4> [100.00%]:
# _1 = PHI <10(2), 20(3)>
return _1;
Is definition of cond_2(D) hidden?
Is there any internal data structure in GCC which maintains the definition of cond_2(D)?
The input C program is as follows:
int f(int cond)
if (cond)
return 10;
else
return 20;
gcc gimple
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
add a comment |
I generated GIMPLE code from C code with GCC's -fdump-tree-optimized, and found that there exists a SSA variable which does not have its definition:
f (int cond)
int _1;
<bb 2> [100.00%]:
if (cond_2(D) != 0)
goto <bb 4>; [46.00%]
else
goto <bb 3>; [54.00%]
<bb 3> [54.00%]:
<bb 4> [100.00%]:
# _1 = PHI <10(2), 20(3)>
return _1;
Is definition of cond_2(D) hidden?
Is there any internal data structure in GCC which maintains the definition of cond_2(D)?
The input C program is as follows:
int f(int cond)
if (cond)
return 10;
else
return 20;
gcc gimple
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
I generated GIMPLE code from C code with GCC's -fdump-tree-optimized, and found that there exists a SSA variable which does not have its definition:
f (int cond)
int _1;
<bb 2> [100.00%]:
if (cond_2(D) != 0)
goto <bb 4>; [46.00%]
else
goto <bb 3>; [54.00%]
<bb 3> [54.00%]:
<bb 4> [100.00%]:
# _1 = PHI <10(2), 20(3)>
return _1;
Is definition of cond_2(D) hidden?
Is there any internal data structure in GCC which maintains the definition of cond_2(D)?
The input C program is as follows:
int f(int cond)
if (cond)
return 10;
else
return 20;
gcc gimple
gcc gimple
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
asked Nov 15 '18 at 17:23
aqjuneaqjune
100113
100113
add a comment |
add a comment |
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