[PATCH] D36656: [SCCP] Propagate integer range information in IPSCCP.

[Daniel Berlin via Phabricator via llvm-commits]

dberlin added inline comments.


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Comment at: test/Transforms/SCCP/ip-constan-ranges.ll:89
+  %res = phi i32 [ 0, %entry], [ 1, %if.true ]
+  %call1 = tail call i32 @f3(i32 %res)
+  ret i32 %call1
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Is there a reason not to track ranges for variables who uses appear as arguments?
IE start with each function call, and for the arguments, mark them so they get a bigger lattice.
It can be done as a followup, i'm just trying to understand.



https://reviews.llvm.org/D36656