[clang] [llvm] [Pipelines] Move IPSCCP after inliner pipeline (PR #96620)

[via cfe-commits]

goldsteinn wrote:

> > This patch causes some significant performance regressions on llvm-test-suite (rv64gc-O3-thinlto):
> > Name	Before	After	Ratio
> > SingleSource/Benchmarks/Shootout/Shootout-random	2.150161677	3.300161641	+ 53.5%
> > SingleSource/Benchmarks/Polybench/linear-algebra/kernels/trisolv/trisolv	0.111845159	0.145389494	+30.0%
> > SingleSource/Benchmarks/Adobe-C++/functionobjects	5.489498263	6.827863965	+24.4%
> 
> It has been fixed. But this patch didn't show a positive net effect :(

Does that mean it has a negative net effect, or its neutral (in which case the original motivating case should be enough).

https://github.com/llvm/llvm-project/pull/96620