69 lines
2.5 KiB
LLVM
69 lines
2.5 KiB
LLVM
; RUN: opt < %s -break-crit-edges -loop-simplify -loop-extract -S | FileCheck %s
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; This function has 2 simple loops and they should be extracted into 2 new functions.
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label %codeRepl1
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; CHECK: codeRepl1:
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; CHECK-NEXT: call void @test3.loop.0()
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; CHECK-NEXT: br label %loop.0.loop.1_crit_edge
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; CHECK: loop.0.loop.1_crit_edge:
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; CHECK-NEXT: br label %codeRepl
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; CHECK: codeRepl:
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; CHECK-NEXT: call void @test3.loop.1()
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; CHECK-NEXT: br label %exit
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; CHECK: exit:
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; CHECK-NEXT: ret void
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entry:
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br label %loop.0
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loop.0: ; preds = %loop.0, %entry
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%index.0 = phi i32 [ 10, %entry ], [ %next.0, %loop.0 ]
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tail call void @foo()
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%next.0 = add nsw i32 %index.0, -1
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%repeat.0 = icmp sgt i32 %index.0, 1
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br i1 %repeat.0, label %loop.0, label %loop.1
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loop.1: ; preds = %loop.0, %loop.1
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%index.1 = phi i32 [ %next.1, %loop.1 ], [ 10, %loop.0 ]
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tail call void @foo()
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%next.1 = add nsw i32 %index.1, -1
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%repeat.1 = icmp sgt i32 %index.1, 1
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br i1 %repeat.1, label %loop.1, label %exit
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exit: ; preds = %loop.1
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ret void
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}
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declare void @foo()
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; CHECK-LABEL: define internal void @test3.loop.1()
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: br label %loop.1
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; CHECK: loop.1:
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; CHECK-NEXT: %index.1 = phi i32 [ %next.1, %loop.1.loop.1_crit_edge ], [ 10, %newFuncRoot ]
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; CHECK-NEXT: tail call void @foo()
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; CHECK-NEXT: %next.1 = add nsw i32 %index.1, -1
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; CHECK-NEXT: %repeat.1 = icmp sgt i32 %index.1, 1
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; CHECK-NEXT: br i1 %repeat.1, label %loop.1.loop.1_crit_edge, label %exit.exitStub
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; CHECK: loop.1.loop.1_crit_edge:
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; CHECK-NEXT: br label %loop.1
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; CHECK: exit.exitStub:
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; CHECK-NEXT: ret void
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; CHECK-LABEL: define internal void @test3.loop.0()
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: br label %loop.0
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; CHECK: loop.0:
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; CHECK-NEXT: %index.0 = phi i32 [ 10, %newFuncRoot ], [ %next.0, %loop.0.loop.0_crit_edge ]
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; CHECK-NEXT: tail call void @foo()
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; CHECK-NEXT: %next.0 = add nsw i32 %index.0, -1
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; CHECK-NEXT: %repeat.0 = icmp sgt i32 %index.0, 1
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; CHECK-NEXT: br i1 %repeat.0, label %loop.0.loop.0_crit_edge, label %loop.0.loop.1_crit_edge.exitStub
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; CHECK: loop.0.loop.0_crit_edge:
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; CHECK-NEXT: br label %loop.0
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; CHECK: loop.0.loop.1_crit_edge.exitStub:
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; CHECK-NEXT: ret void
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