it is possible that a variable A is a merge of a constant (omitted) and itself.

We do not need to replace for A.
21 jobs from copy-propagation in 23 minutes and 16 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  Build
passed #16632
build

08:30

 
  Test
passed #16633
test:cargo:api

00:02

passed #16635
test:cargo:compiler

00:57

passed #16634
test:cargo:ir

00:02

passed #16636
test:cargo:runtime

00:02

passed #16642
testjit:binops

00:06

passed #16643
testjit:cmpops

00:05

passed #16644
testjit:controlflow

00:03

passed #16645
testjit:convops

00:03

passed #16646
testjit:double

00:07

passed #16647
testjit:memops

00:04

passed #16641
testjit:milestones

00:03

passed #16648
testjit:otherops

00:03

passed #16649
testjit:rpython

08:40

failed #16650
testjit:som

02:13

passed #16640
testmuc:test_binop

00:30

passed #16639
testmuc:test_cmp

00:31

passed #16637
testmuc:test_simple

00:33

passed #16638
testmuc:test_swapstack

00:34

 
  Mubench
skipped #16651
mubench
 
  Rustfmt
skipped #16652
rustfmt