Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/SimplifyCFG/preserve-branchweights-switch-create.ll

@@ -1,140 +0,0 @@
-; RUN: opt -simplifycfg -S -o - < %s | FileCheck %s
-
-declare void @func2(i32)
-declare void @func4(i32)
-declare void @func6(i32)
-declare void @func8(i32)
-
-;; test1 - create a switch with case 2 and case 4 from two branches: N == 2
-;; and N == 4.
-define void @test1(i32 %N) nounwind uwtable {
-entry:
-  %cmp = icmp eq i32 %N, 2
-  br i1 %cmp, label %if.then, label %if.else, !prof !0
-; CHECK: test1
-; CHECK: switch i32 %N
-; CHECK: ], !prof !0
-
-if.then:
-  call void @func2(i32 %N) nounwind
-  br label %if.end9
-
-if.else:
-  %cmp2 = icmp eq i32 %N, 4
-  br i1 %cmp2, label %if.then7, label %if.else8, !prof !1
-
-if.then7:
-  call void @func4(i32 %N) nounwind
-  br label %if.end
-
-if.else8:
-  call void @func8(i32 %N) nounwind
-  br label %if.end
-
-if.end:
-  br label %if.end9
-
-if.end9:
-  ret void
-}
-
-;; test2 - Merge two switches where PredDefault == BB.
-define void @test2(i32 %M, i32 %N) nounwind uwtable {
-entry:
-  %cmp = icmp sgt i32 %M, 2
-  br i1 %cmp, label %sw1, label %sw2
-
-sw1:
-  switch i32 %N, label %sw2 [
-    i32 2, label %sw.bb
-    i32 3, label %sw.bb1
-  ], !prof !2
-; CHECK: test2
-; CHECK: switch i32 %N, label %sw.epilog
-; CHECK: i32 2, label %sw.bb
-; CHECK: i32 3, label %sw.bb1
-; CHECK: i32 4, label %sw.bb5
-; CHECK: ], !prof !1
-
-sw.bb:
-  call void @func2(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.bb1:
-  call void @func4(i32 %N) nounwind
-  br label %sw.epilog
-
-sw2:
-;; Here "case 2" is invalidated if control is transferred through default case
-;; of the first switch.
-  switch i32 %N, label %sw.epilog [
-    i32 2, label %sw.bb4
-    i32 4, label %sw.bb5
-  ], !prof !3
-
-sw.bb4:
-  call void @func6(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.bb5:
-  call void @func8(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.epilog:
-  ret void
-}
-
-;; test3 - Merge two switches where PredDefault != BB.
-define void @test3(i32 %M, i32 %N) nounwind uwtable {
-entry:
-  %cmp = icmp sgt i32 %M, 2
-  br i1 %cmp, label %sw1, label %sw2
-
-sw1:
-  switch i32 %N, label %sw.bb [
-    i32 2, label %sw2
-    i32 3, label %sw2
-    i32 1, label %sw.bb1
-  ], !prof !4
-; CHECK: test3
-; CHECK: switch i32 %N, label %sw.bb
-; CHECK: i32 1, label %sw.bb1
-; CHECK: i32 3, label %sw.bb4
-; CHECK: i32 2, label %sw.epilog
-; CHECK: ], !prof !3
-
-sw.bb:
-  call void @func2(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.bb1:
-  call void @func4(i32 %N) nounwind
-  br label %sw.epilog
-
-sw2:
-  switch i32 %N, label %sw.epilog [
-    i32 3, label %sw.bb4
-    i32 4, label %sw.bb5
-  ], !prof !5
-
-sw.bb4:
-  call void @func6(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.bb5:
-  call void @func8(i32 %N) nounwind
-  br label %sw.epilog
-
-sw.epilog:
-  ret void
-}
-
-!0 = !{!"branch_weights", i32 64, i32 4}
-!1 = !{!"branch_weights", i32 4, i32 64}
-; CHECK: !0 = !{!"branch_weights", i32 256, i32 4352, i32 16}
-!2 = !{!"branch_weights", i32 4, i32 4, i32 8}
-!3 = !{!"branch_weights", i32 8, i32 8, i32 4}
-; CHECK: !1 = !{!"branch_weights", i32 32, i32 48, i32 96, i32 16}
-!4 = !{!"branch_weights", i32 7, i32 6, i32 4, i32 3}
-!5 = !{!"branch_weights", i32 17, i32 13, i32 9}
-; CHECK: !3 = !{!"branch_weights", i32 7, i32 3, i32 4, i32 6}