ISLE: rewrite and/or of icmp (#6095)

* ISLE: rewrite `and`/`or` of `icmp`

* Add `make-icmp-tests.sh` script

* Remove unused changes

cranelift/filetests/filetests/egraph/make-icmp-tests.sh

@@ -0,0 +1,38 @@
+#!/usr/bin/env bash
+
+set -e
+cd $(dirname "$0")
+out=icmp.clif
+CCS="eq ne ult ule ugt uge slt sle sgt sge"
+
+function main {
+    cat << EOF > $out
+test optimize precise-output
+set opt_level=speed
+set use_egraphs=true
+target x86_64
+
+;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+;; !!! GENERATED BY 'make-icmp-tests.sh' DO NOT EDIT !!!
+;; !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+;; run with the 'CRANELIFT_TEST_BLESS=1' env var set to update this file
+
+EOF
+    for op in "and" "or"; do
+        for cc1 in $CCS; do
+            for cc2 in $CCS; do
+                cat << EOF >> $out
+function %icmp_${op}_${cc1}_${cc2}(i32, i32) -> i8 {
+block0(v0: i32, v1: i32):
+    v2 = icmp ${cc1} v0, v1
+    v3 = icmp ${cc2} v0, v1
+    v4 = b${op} v2, v3
+    return v4
+}
+EOF
+            done
+        done
+    done
+}
+
+main