derek.holloway
7502bf64a4
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50 lines
1.6 KiB
LLVM
50 lines
1.6 KiB
LLVM
; RUN: opt -hexagon-loop-idiom -S < %s | FileCheck %s
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; RUN: opt -p hexagon-loop-idiom -S < %s | FileCheck %s
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; REQUIRES: asserts
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;
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; Check for sane output, this used to crash.
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; CHECK: define void @fred
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; The conversion of shifts from right to left failed, but the return
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; code was not checked and the transformation proceeded.
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target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048"
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target triple = "hexagon"
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@A = common global [256 x i32] zeroinitializer, align 8
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; Function Attrs: noinline nounwind
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define void @fred() local_unnamed_addr #0 {
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b0:
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br label %b1
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b1: ; preds = %b13, %b0
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%v2 = phi i32 [ 0, %b0 ], [ %v16, %b13 ]
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br label %b3
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b3: ; preds = %b3, %b1
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%v4 = phi i32 [ %v2, %b1 ], [ %v10, %b3 ]
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%v5 = phi i32 [ 0, %b1 ], [ %v11, %b3 ]
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%v6 = and i32 %v4, 1
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%v7 = icmp ne i32 %v6, 0
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%v8 = lshr i32 %v4, 1
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%v9 = xor i32 %v8, 123456789
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%v10 = select i1 %v7, i32 %v9, i32 %v8
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%v11 = add nuw nsw i32 %v5, 1
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%v12 = icmp ne i32 %v11, 8
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br i1 %v12, label %b3, label %b13
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b13: ; preds = %b3
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%v14 = phi i32 [ %v10, %b3 ]
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%v15 = getelementptr inbounds [256 x i32], ptr @A, i32 0, i32 %v2
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store i32 %v14, ptr %v15, align 4
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%v16 = add nuw nsw i32 %v2, 1
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%v17 = icmp ne i32 %v16, 256
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br i1 %v17, label %b1, label %b18
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b18: ; preds = %b13
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ret void
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}
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attributes #0 = { noinline nounwind "target-cpu"="hexagonv60" }
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