[PATCH] D90554: [CostModel] remove cost-kind predicate for intrinsics in basic TTI implementation

Sanjay Patel via Phabricator via llvm-commits llvm-commits at lists.llvm.org
Fri Nov 6 04:51:14 PST 2020


spatel added inline comments.


================
Comment at: llvm/test/Analysis/CostModel/X86/intrinsic-cost-kinds.ll:46-48
 ; LATE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %s = call { i32, i1 } @llvm.umul.with.overflow.i32(i32 %a, i32 %b)
 ; LATE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: %v = call { <16 x i32>, <16 x i1> } @llvm.umul.with.overflow.v16i32(<16 x i32> %va, <16 x i32> %vb)
 ; LATE-NEXT:  Cost Model: Found an estimated cost of 1 for instruction: ret void
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pengfei wrote:
> Why no diffs in latency?
Latency is currently using a different path before we ever reach functions like getIntrinsicInstrCost(), so it is unaffected. We need to see how latency is used in its callers to decide if it should be changed too.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D90554/new/

https://reviews.llvm.org/D90554



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