1*0ca8ddd8SRoman Lebedev; RUN: opt < %s -passes='function(break-crit-edges,loop-simplify),loop-extract' -S | FileCheck %s 23b70ee27SEhud Katz 33b70ee27SEhud Katz; This function has 2 simple loops and they should be extracted into 2 new functions. 43b70ee27SEhud Katzdefine void @test3() { 53b70ee27SEhud Katz; CHECK-LABEL: @test3( 63b70ee27SEhud Katz; CHECK-NEXT: entry: 73b70ee27SEhud Katz; CHECK-NEXT: br label %codeRepl1 83b70ee27SEhud Katz; CHECK: codeRepl1: 93b70ee27SEhud Katz; CHECK-NEXT: call void @test3.loop.0() 103b70ee27SEhud Katz; CHECK-NEXT: br label %loop.0.loop.1_crit_edge 113b70ee27SEhud Katz; CHECK: loop.0.loop.1_crit_edge: 123b70ee27SEhud Katz; CHECK-NEXT: br label %codeRepl 133b70ee27SEhud Katz; CHECK: codeRepl: 143b70ee27SEhud Katz; CHECK-NEXT: call void @test3.loop.1() 153b70ee27SEhud Katz; CHECK-NEXT: br label %exit 163b70ee27SEhud Katz; CHECK: exit: 173b70ee27SEhud Katz; CHECK-NEXT: ret void 183b70ee27SEhud Katz 193b70ee27SEhud Katzentry: 203b70ee27SEhud Katz br label %loop.0 213b70ee27SEhud Katz 223b70ee27SEhud Katzloop.0: ; preds = %loop.0, %entry 233b70ee27SEhud Katz %index.0 = phi i32 [ 10, %entry ], [ %next.0, %loop.0 ] 243b70ee27SEhud Katz tail call void @foo() 253b70ee27SEhud Katz %next.0 = add nsw i32 %index.0, -1 263b70ee27SEhud Katz %repeat.0 = icmp sgt i32 %index.0, 1 273b70ee27SEhud Katz br i1 %repeat.0, label %loop.0, label %loop.1 283b70ee27SEhud Katz 293b70ee27SEhud Katzloop.1: ; preds = %loop.0, %loop.1 303b70ee27SEhud Katz %index.1 = phi i32 [ %next.1, %loop.1 ], [ 10, %loop.0 ] 313b70ee27SEhud Katz tail call void @foo() 323b70ee27SEhud Katz %next.1 = add nsw i32 %index.1, -1 333b70ee27SEhud Katz %repeat.1 = icmp sgt i32 %index.1, 1 343b70ee27SEhud Katz br i1 %repeat.1, label %loop.1, label %exit 353b70ee27SEhud Katz 363b70ee27SEhud Katzexit: ; preds = %loop.1 373b70ee27SEhud Katz ret void 383b70ee27SEhud Katz} 393b70ee27SEhud Katz 403b70ee27SEhud Katzdeclare void @foo() 413b70ee27SEhud Katz 423b70ee27SEhud Katz; CHECK-LABEL: define internal void @test3.loop.1() 433b70ee27SEhud Katz; CHECK-NEXT: newFuncRoot: 443b70ee27SEhud Katz; CHECK-NEXT: br label %loop.1 453b70ee27SEhud Katz; CHECK: loop.1: 463b70ee27SEhud Katz; CHECK-NEXT: %index.1 = phi i32 [ %next.1, %loop.1.loop.1_crit_edge ], [ 10, %newFuncRoot ] 473b70ee27SEhud Katz; CHECK-NEXT: tail call void @foo() 483b70ee27SEhud Katz; CHECK-NEXT: %next.1 = add nsw i32 %index.1, -1 493b70ee27SEhud Katz; CHECK-NEXT: %repeat.1 = icmp sgt i32 %index.1, 1 503b70ee27SEhud Katz; CHECK-NEXT: br i1 %repeat.1, label %loop.1.loop.1_crit_edge, label %exit.exitStub 513b70ee27SEhud Katz; CHECK: loop.1.loop.1_crit_edge: 523b70ee27SEhud Katz; CHECK-NEXT: br label %loop.1 532e192ab1SVyacheslav Zakharin; CHECK: exit.exitStub: 542e192ab1SVyacheslav Zakharin; CHECK-NEXT: ret void 553b70ee27SEhud Katz 563b70ee27SEhud Katz; CHECK-LABEL: define internal void @test3.loop.0() 573b70ee27SEhud Katz; CHECK-NEXT: newFuncRoot: 583b70ee27SEhud Katz; CHECK-NEXT: br label %loop.0 593b70ee27SEhud Katz; CHECK: loop.0: 603b70ee27SEhud Katz; CHECK-NEXT: %index.0 = phi i32 [ 10, %newFuncRoot ], [ %next.0, %loop.0.loop.0_crit_edge ] 613b70ee27SEhud Katz; CHECK-NEXT: tail call void @foo() 623b70ee27SEhud Katz; CHECK-NEXT: %next.0 = add nsw i32 %index.0, -1 633b70ee27SEhud Katz; CHECK-NEXT: %repeat.0 = icmp sgt i32 %index.0, 1 643b70ee27SEhud Katz; CHECK-NEXT: br i1 %repeat.0, label %loop.0.loop.0_crit_edge, label %loop.0.loop.1_crit_edge.exitStub 653b70ee27SEhud Katz; CHECK: loop.0.loop.0_crit_edge: 663b70ee27SEhud Katz; CHECK-NEXT: br label %loop.0 672e192ab1SVyacheslav Zakharin; CHECK: loop.0.loop.1_crit_edge.exitStub: 682e192ab1SVyacheslav Zakharin; CHECK-NEXT: ret void 69