Imported Upstream version 5.18.0.247

Former-commit-id: 2d6af2e4ed0eda5cbdc2946446ef7718456ad190

external/llvm/test/Transforms/SimplifyCFG/switch-range-to-icmp.ll

@@ -1,77 +0,0 @@
-; RUN: opt %s -simplifycfg -S | FileCheck %s
-
-declare i32 @f(i32)
-
-define i32 @basic(i32 %x) {
-; CHECK-LABEL: @basic
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %default
-
-entry:
-  switch i32 %x, label %default [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
-  ]
-default:
-  %0 = call i32 @f(i32 0)
-  ret i32 %0
-a:
-  %1 = call i32 @f(i32 1)
-  ret i32 %1
-}
-
-
-define i32 @unreachable(i32 %x) {
-; CHECK-LABEL: @unreachable
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
-
-entry:
-  switch i32 %x, label %unreachable [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
-    i32 10, label %b
-    i32 20, label %b
-    i32 30, label %b
-    i32 40, label %b
-  ]
-unreachable:
-  unreachable
-a:
-  %0 = call i32 @f(i32 0)
-  ret i32 %0
-b:
-  %1 = call i32 @f(i32 1)
-  ret i32 %1
-}
-
-
-define i32 @unreachable2(i32 %x) {
-; CHECK-LABEL: @unreachable2
-; CHECK: x.off = add i32 %x, -5
-; CHECK: %switch = icmp ult i32 %x.off, 3
-; CHECK: br i1 %switch, label %a, label %b
-
-entry:
-  ; Note: folding the most popular case destination into the default
-  ; would prevent switch-to-icmp here.
-  switch i32 %x, label %unreachable [
-    i32 5, label %a
-    i32 6, label %a
-    i32 7, label %a
-    i32 10, label %b
-    i32 20, label %b
-  ]
-unreachable:
-  unreachable
-a:
-  %0 = call i32 @f(i32 0)
-  ret i32 %0
-b:
-  %1 = call i32 @f(i32 1)
-  ret i32 %1
-}