derek.holloway
7502bf64a4
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57 lines
1.5 KiB
LLVM
57 lines
1.5 KiB
LLVM
; RUN: opt -passes=loop-unroll -unroll-peel-count=2 -S -disable-output -debug-only=loop-unroll < %s 2>&1 | FileCheck %s
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; REQUIRES: asserts
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define void @test() {
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; CHECK-LABEL: Loop Unroll: F[test] Loop %loop3
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; CHECK-NEXT: Loop Size = 7
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; CHECK: PEELING loop %loop3 with iteration count 2!
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; CHECK: Loop Unroll: F[test] Loop %loop2
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; CHECK-NEXT: Loop Size = 28
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; CHECK: PEELING loop %loop2 with iteration count 2!
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; CHECK: Loop Unroll: F[test] Loop %loop4
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; CHECK-NEXT: Loop Size = 3
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; CHECK: PEELING loop %loop4 with iteration count 2!
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; CHECK: Loop Unroll: F[test] Loop %loop1
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; CHECK-NEXT: Loop Size = 95
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; CHECK: PEELING loop %loop1 with iteration count 2!
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entry:
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br label %loop1
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loop1:
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%phi = phi i32 [ 1, %entry ], [ 0, %loop1.latch ]
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br label %loop2
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loop2:
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%phi3 = phi i64 [ 0, %loop1 ], [ %sext, %loop2.latch ]
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br label %loop3
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loop3:
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%phi5 = phi i64 [ %phi3, %loop2 ], [ %sext, %loop3.latch ]
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%phi6 = phi i32 [ 1, %loop2 ], [ %add10, %loop3.latch ]
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%trunc = trunc i64 %phi5 to i32
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br i1 true, label %loop3.latch, label %exit
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loop3.latch:
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%add = add i32 1, %phi
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%sext = sext i32 %add to i64
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%add10 = add i32 %phi6, 1
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%icmp = icmp ugt i32 %add10, 2
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br i1 %icmp, label %loop2.latch, label %loop3
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loop2.latch:
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br i1 false, label %loop4.preheader, label %loop2
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loop4.preheader:
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br label %loop4
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loop4:
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br i1 false, label %loop1.latch, label %loop4
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loop1.latch:
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br label %loop1
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exit:
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%phi8 = phi i32 [ %trunc, %loop3 ]
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ret void
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}
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