Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch.ll

@@ -1,104 +0,0 @@
-; NOTE: Assertions have been autogenerated by update_test_checks.py
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
-
-; Test normal folding
-define i32 @test1() {
-; CHECK-LABEL: @test1(
-; CHECK-NEXT:  TheDest:
-; CHECK-NEXT:    ret i32 1234
-;
-  switch i32 5, label %Default [
-  i32 0, label %Foo
-  i32 1, label %Bar
-  i32 2, label %Baz
-  i32 5, label %TheDest
-  ]
-Default:
-  ret i32 -1
-Foo:
-  ret i32 -2
-Bar:
-  ret i32 -3
-Baz:
-  ret i32 -4
-TheDest:
-  ret i32 1234
-}
-
-; Test folding to default dest
-define i32 @test2() {
-; CHECK-LABEL: @test2(
-; CHECK-NEXT:  Default:
-; CHECK-NEXT:    ret i32 1234
-;
-  switch i32 3, label %Default [
-  i32 0, label %Foo
-  i32 1, label %Bar
-  i32 2, label %Baz
-  i32 5, label %TheDest
-  ]
-Default:
-  ret i32 1234
-Foo:
-  ret i32 -2
-Bar:
-  ret i32 -5
-Baz:
-  ret i32 -6
-TheDest:
-  ret i32 -8
-}
-
-; Test folding all to same dest
-define i32 @test3(i1 %C) {
-; CHECK-LABEL: @test3(
-; CHECK-NEXT:  TheDest:
-; CHECK-NEXT:    ret i32 1234
-;
-  br i1 %C, label %Start, label %TheDest
-Start:          ; preds = %0
-  switch i32 3, label %TheDest [
-  i32 0, label %TheDest
-  i32 1, label %TheDest
-  i32 2, label %TheDest
-  i32 5, label %TheDest
-  ]
-TheDest:
-  ret i32 1234
-}
-
-; Test folding switch -> branch
-define i32 @test4(i32 %C) {
-; CHECK-LABEL: @test4(
-; CHECK-NEXT:  L1:
-; CHECK-NEXT:    [[COND:%.*]] = icmp eq i32 %C, 0
-; CHECK-NEXT:    [[DOT:%.*]] = select i1 [[COND]], i32 1, i32 0
-; CHECK-NEXT:    ret i32 [[DOT]]
-;
-  switch i32 %C, label %L1 [
-  i32 0, label %L2
-  ]
-L1:
-  ret i32 0
-L2:
-  ret i32 1
-}
-
-; Can fold into a cond branch!
-define i32 @test5(i32 %C) {
-; CHECK-LABEL: @test5(
-; CHECK-NEXT:  L1:
-; CHECK-NEXT:    [[COND:%.*]] = icmp eq i32 %C, 0
-; CHECK-NEXT:    [[DOT:%.*]] = select i1 [[COND]], i32 1, i32 0
-; CHECK-NEXT:    ret i32 [[DOT]]
-;
-  switch i32 %C, label %L1 [
-  i32 0, label %L2
-  i32 123, label %L1
-  ]
-L1:
-  ret i32 0
-L2:
-  ret i32 1
-}
-