derek.holloway
7502bf64a4
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66 lines
2.4 KiB
LLVM
66 lines
2.4 KiB
LLVM
; Disable this test in profcheck because the first run would cause profcheck to fail.
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; REQUIRES: !profcheck
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; RUN: opt -p "print<block-freq>,loop-unroll,print<block-freq>" -scev-cheap-expansion-budget=3 -S %s -profcheck-disable-metadata-fixes 2>&1 | FileCheck %s --check-prefixes=COMMON,BAD
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; RUN: opt -p "print<block-freq>,loop-unroll,print<block-freq>" -scev-cheap-expansion-budget=3 -S %s 2>&1 | FileCheck %s --check-prefixes=COMMON,GOOD
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define i32 @test_expansion_cost_2(i32 %start, i32 %end) !prof !0 {
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entry:
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%sub = add i32 %end, -1
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br label %loop.header
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loop.header:
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%iv = phi i32 [ %start, %entry ], [ %iv.next, %loop.latch ]
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%c = icmp eq i32 %iv, %sub
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br i1 %c, label %then, label %loop.latch, !prof !1
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then:
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br label %loop.latch
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loop.latch:
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%iv.next = add nsw i32 %iv, 1
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%ec = icmp eq i32 %iv.next, %end
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br i1 %ec, label %exit, label %loop.header, !prof !2
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exit:
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ret i32 0
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}
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!0 = !{!"function_entry_count", i32 10}
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!1 = !{!"branch_weights", i32 2, i32 3}
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!2 = !{!"branch_weights", i32 1, i32 50}
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; COMMON: block-frequency-info: test_expansion_cost_2
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; COMMON-NEXT: entry: float = 1.0
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; COMMON-NEXT: loop.header: float = 51.0
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; COMMON-NEXT: then: float = 20.4
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; COMMON-NEXT: loop.latch: float = 51.0
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; COMMON-NEXT: exit: float = 1.0
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; COMMON: block-frequency-info: test_expansion_cost_2
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; GOOD-NEXT: entry: float = 1.0
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; GOOD-NEXT: entry.split: float = 0.98039
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; GOOD-NEXT: loop.header: float = 50.0
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; GOOD-NEXT: then: float = 20.0
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; GOOD-NEXT: loop.latch: float = 50.0
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; GOOD-NEXT: exit.peel.begin.loopexit: float = 0.98039
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; GOOD-NEXT: exit.peel.begin: float = 1.0
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; GOOD-NEXT: loop.header.peel: float = 1.0
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; GOOD-NEXT: then.peel: float = 0.4
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; GOOD-NEXT: loop.latch.peel: float = 1.0
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; GOOD-NEXT: exit.peel.next: float = 1.0
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; GOOD-NEXT: loop.header.peel.next: float = 1.0
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; GOOD-NEXT: exit: float = 1.0
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; BAD-NEXT: entry: float = 1.0
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; BAD-NEXT: entry.split: float = 0.625
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; BAD-NEXT: loop.header: float = 31.875
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; BAD-NEXT: then: float = 12.75
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; BAD-NEXT: loop.latch: float = 31.875
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; BAD-NEXT: exit.peel.begin.loopexit: float = 0.625
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; BAD-NEXT: exit.peel.begin: float = 1.0
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; BAD-NEXT: loop.header.peel: float = 1.0
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; BAD-NEXT: then.peel: float = 0.4
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; BAD-NEXT: loop.latch.peel: float = 1.0
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; BAD-NEXT: exit.peel.next: float = 1.0
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; BAD-NEXT: loop.header.peel.next: float = 1.0
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; BAD-NEXT: exit: float = 1.0 |