[Test] Underscored simplify_cfg_canonicalize_switch_enum.

Use underscores rather than hyphens so that text editors understand the
name as a single word.

Author: nate-chandler

lib/SILOptimizer/Transforms/SimplifyCFG.cpp

@@ -2911,7 +2911,7 @@ namespace swift::test {
 /// Dumps:
 /// - nothing
 static FunctionTest SimplifyCFGCanonicalizeSwitchEnum(
-    "simplify-cfg-canonicalize-switch-enum",
+    "simplify_cfg_canonicalize_switch_enum",
     [](auto &function, auto &arguments, auto &test) {
       auto *passToRun = cast<SILFunctionTransform>(createSimplifyCFG());
       passToRun->injectPassManager(test.getPassManager());

test/SILOptimizer/simplify_cfg_ossa_switch_enum.sil

@@ -25,7 +25,7 @@ enum E2 {
 // CHECK-LABEL: } // end sil function 'test_canonicalize_switch_enum1'
 sil [ossa] @test_canonicalize_switch_enum1 : $@convention(thin) (@owned FakeOptional<Klass>) -> () {
 bb0(%0 : @owned $FakeOptional<Klass>):
-  specify_test "simplify-cfg-canonicalize-switch-enum"
+  specify_test "simplify_cfg_canonicalize_switch_enum"
   switch_enum %0 : $FakeOptional<Klass>, case #FakeOptional.none!enumelt: bb1, default bb2
 
 bb1:
@@ -45,7 +45,7 @@ bb3:
 // CHECK-LABEL: } // end sil function 'test_canonicalize_switch_enum2'
 sil [ossa] @test_canonicalize_switch_enum2 : $@convention(thin) (@owned E1) -> () {
 bb0(%0 : @owned $E1):
-  specify_test "simplify-cfg-canonicalize-switch-enum"
+  specify_test "simplify_cfg_canonicalize_switch_enum"
   switch_enum %0 : $E1, case #E1.A!enumelt: bb1, default bb2
 
 bb1(%2 : @owned $Klass):
@@ -66,7 +66,7 @@ bb3:
 // CHECK-LABEL: } // end sil function 'test_canonicalize_switch_enum3'
 sil [ossa] @test_canonicalize_switch_enum3 : $@convention(thin) (@owned E2) -> () {
 bb0(%0 : @owned $E2):
-  specify_test "simplify-cfg-canonicalize-switch-enum"
+  specify_test "simplify_cfg_canonicalize_switch_enum"
   switch_enum %0 : $E2, case #E2.A!enumelt: bb1, default bb2
 
 bb1(%2 : @owned $Klass):