derek.holloway
7502bf64a4
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48 lines
1.5 KiB
LLVM
48 lines
1.5 KiB
LLVM
; RUN: opt -disable-output "-passes=print<scalar-evolution>" < %s 2>&1 | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
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; Check that we don't have unreasonably huge SCEVs and in particular only a
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; reasonable amount of AddRecs in the notation of %tmp19. If we "simplify" SCEVs
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; too aggressively, we may end up with huge nested expressions.
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define void @test(i32 %x, i64 %y, i1 %cond) {
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; CHECK: %tmp19 = mul i32 %tmp17, %tmp18
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; CHECK: ((((((
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; CHECK-NOT: (((((
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; CHECK: %tmp20 = add i32 %tmp19, %x
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bb:
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br label %bb1
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bb1: ; preds = %bb3, %bb
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%tmp = phi i64 [ %y, %bb ], [ %tmp22, %bb3 ]
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%tmp2 = phi i32 [ %x, %bb ], [ %tmp4, %bb3 ]
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br label %bb5
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bb3: ; preds = %bb5
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%tmp4 = add i32 %tmp2, %x
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br label %bb1
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bb5: ; preds = %bb5, %bb1
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%tmp6 = phi i32 [ %tmp23, %bb5 ], [ %tmp2, %bb1 ]
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%tmp7 = sub i32 -119, %tmp6
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%tmp8 = mul i32 %tmp7, %x
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%tmp9 = sub i32 -120, %tmp6
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%tmp10 = mul i32 %tmp8, %tmp9
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%tmp11 = mul i32 %x, %tmp10
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%tmp12 = sub i32 -121, %tmp6
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%tmp13 = mul i32 %tmp10, %tmp12
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%tmp14 = mul i32 %tmp11, %tmp13
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%tmp15 = sub i32 -122, %tmp6
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%tmp16 = mul i32 %tmp13, %tmp15
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%tmp17 = mul i32 %tmp14, %tmp16
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%tmp18 = mul i32 %tmp16, %x
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%tmp19 = mul i32 %tmp17, %tmp18
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%tmp20 = add i32 %tmp19, %x
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%tmp21 = sext i32 %tmp20 to i64
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%tmp22 = add i64 %y, %tmp21
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%tmp23 = add i32 %tmp6, 7
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br i1 %cond, label %bb5, label %bb3
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}
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