07b2095234
With this update the isl AST generation extracts disjunctive constraints early
on. As a result, code that previously resulted in two branches with (close-to)
identical code within them:
if (P <= -1) {
for (int c0 = 0; c0 < N; c0 += 1)
Stmt_store(c0);
} else if (P >= 1)
for (int c0 = 0; c0 < N; c0 += 1)
Stmt_store(c0);
results now in only a single branch body:
if (P <= -1 || P >= 1)
for (int c0 = 0; c0 < N; c0 += 1)
Stmt_store(c0);
This resolves http://llvm.org/PR27559
Besides the above change, this isl update brings better simplification of
sets/maps containing existentially quantified dimensions and fixes a bug in
isl's coalescing.
llvm-svn: 272500
10 lines
162 B
C
10 lines
162 B
C
for (int c0 = 0; c0 < Ncl; c0 += 1) {
|
|
if (Ncl >= c0 + 2 && c0 >= 1) {
|
|
S(c0, 28);
|
|
} else if (c0 == 0) {
|
|
S(0, 26);
|
|
} else {
|
|
S(Ncl - 1, 27);
|
|
}
|
|
}
|