[llvm] [FuncSpec] Handle ssa_copy intrinsic calls in InstCostVisitor (PR #114247)

[Hari Limaye via llvm-commits]

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@@ -0,0 +1,79 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs --version 5
+; RUN: opt -passes="ipsccp<func-spec>" -funcspec-min-function-size=1       \
+; RUN:                                 -funcspec-for-literal-constant=true \
+; RUN:                                 -funcspec-min-codesize-savings=50   \
+; RUN:                                 -funcspec-min-latency-savings=0     \
+; RUN:                                 -S < %s | FileCheck %s
+
+; Verify that we are able to estimate the codesize savings by looking through
+; calls to ssa_copy intrinsics, which are inserted by PredicateInfo when IPSCCP
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hazzlim wrote:

Ah nice, good idea. Have updated the regression test to incorporate the suggestions :) 

https://github.com/llvm/llvm-project/pull/114247