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-rw-r--r--llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll179
1 files changed, 0 insertions, 179 deletions
diff --git a/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll b/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll
deleted file mode 100644
index e5c2ef65b31..00000000000
--- a/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll
+++ /dev/null
@@ -1,179 +0,0 @@
-; RUN: opt %s -S -simplifycfg | FileCheck %s
-declare void @foo(i32)
-
-define void @test(i1 %a) {
-; CHECK-LABEL: @test
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
- switch i1 %a, label %default [i1 1, label %true
- i1 0, label %false]
-true:
- call void @foo(i32 1)
- ret void
-false:
- call void @foo(i32 3)
- ret void
-default:
- call void @foo(i32 2)
- ret void
-}
-
-define void @test2(i2 %a) {
-; CHECK-LABEL: @test2
- switch i2 %a, label %default [i2 0, label %case0
- i2 1, label %case1
- i2 2, label %case2
- i2 3, label %case3]
-case0:
- call void @foo(i32 0)
- ret void
-case1:
- call void @foo(i32 1)
- ret void
-case2:
- call void @foo(i32 2)
- ret void
-case3:
- call void @foo(i32 3)
- ret void
-default:
-; CHECK-LABEL: default1:
-; CHECK-NEXT: unreachable
- call void @foo(i32 4)
- ret void
-}
-
-; This one is a negative test - we know the value of the default,
-; but that's about it
-define void @test3(i2 %a) {
-; CHECK-LABEL: @test3
- switch i2 %a, label %default [i2 0, label %case0
- i2 1, label %case1
- i2 2, label %case2]
-
-case0:
- call void @foo(i32 0)
- ret void
-case1:
- call void @foo(i32 1)
- ret void
-case2:
- call void @foo(i32 2)
- ret void
-default:
-; CHECK-LABEL: default:
-; CHECK-NEXT: call void @foo
- call void @foo(i32 0)
- ret void
-}
-
-; Negative test - check for possible overflow when computing
-; number of possible cases.
-define void @test4(i128 %a) {
-; CHECK-LABEL: @test4
- switch i128 %a, label %default [i128 0, label %case0
- i128 1, label %case1]
-
-case0:
- call void @foo(i32 0)
- ret void
-case1:
- call void @foo(i32 1)
- ret void
-default:
-; CHECK-LABEL: default:
-; CHECK-NEXT: call void @foo
- call void @foo(i32 0)
- ret void
-}
-
-; All but one bit known zero
-define void @test5(i8 %a) {
-; CHECK-LABEL: @test5
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
- %cmp = icmp ult i8 %a, 2
- call void @llvm.assume(i1 %cmp)
- switch i8 %a, label %default [i8 1, label %true
- i8 0, label %false]
-true:
- call void @foo(i32 1)
- ret void
-false:
- call void @foo(i32 3)
- ret void
-default:
- call void @foo(i32 2)
- ret void
-}
-
-;; All but one bit known one
-define void @test6(i8 %a) {
-; CHECK-LABEL: @test6
-; CHECK: @llvm.assume
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
- %and = and i8 %a, 254
- %cmp = icmp eq i8 %and, 254
- call void @llvm.assume(i1 %cmp)
- switch i8 %a, label %default [i8 255, label %true
- i8 254, label %false]
-true:
- call void @foo(i32 1)
- ret void
-false:
- call void @foo(i32 3)
- ret void
-default:
- call void @foo(i32 2)
- ret void
-}
-
-; Check that we can eliminate both dead cases and dead defaults
-; within a single run of simplify-cfg
-define void @test7(i8 %a) {
-; CHECK-LABEL: @test7
-; CHECK: @llvm.assume
-; CHECK: br i1 [[IGNORE:%.*]], label %true, label %false
- %and = and i8 %a, 254
- %cmp = icmp eq i8 %and, 254
- call void @llvm.assume(i1 %cmp)
- switch i8 %a, label %default [i8 255, label %true
- i8 254, label %false
- i8 0, label %also_dead]
-true:
- call void @foo(i32 1)
- ret void
-false:
- call void @foo(i32 3)
- ret void
-also_dead:
- call void @foo(i32 5)
- ret void
-default:
- call void @foo(i32 2)
- ret void
-}
-
-;; All but one bit known undef
-;; Note: This is currently testing an optimization which doesn't trigger. The
-;; case this is protecting against is that a bit could be assumed both zero
-;; *or* one given we know it's undef. ValueTracking doesn't do this today,
-;; but it doesn't hurt to confirm.
-define void @test8(i8 %a) {
-; CHECK-LABEL: @test8(
-; CHECK: switch i8
- %and = and i8 %a, 254
- %cmp = icmp eq i8 %and, undef
- call void @llvm.assume(i1 %cmp)
- switch i8 %a, label %default [i8 255, label %true
- i8 254, label %false]
-true:
- call void @foo(i32 1)
- ret void
-false:
- call void @foo(i32 3)
- ret void
-default:
- call void @foo(i32 2)
- ret void
-}
-
-declare void @llvm.assume(i1)
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