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nph12
2008 Aug 22
1
[LLVMdev] Conditonal to constant promotion?
...ent the analysis
from correctly find the answer.
In this specific test case, these selects are provably
useless and I am trying to get rid of them either by finding
the correct transformation pass or writing/extending an existing
one.
The instructions I am referring to are in the basic block
bb.nph15.split:
bb.nph15.split: ; preds = %bb.nph15
%umax26 = select i1 %0, i32 1, i32 %m ; <i32> [#uses=2]
%umax22 = select i1 %15, i32 1, i32 %o ; <i32> [#uses=2]
%umax = select i1 %16, i32 1, i32 %n ; <i32> [#uses=1]...