derek.holloway
7502bf64a4
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53 lines
1.8 KiB
LLVM
53 lines
1.8 KiB
LLVM
; RUN: llc -mtriple=hexagon -O3 -verify-machineinstrs < %s | FileCheck %s
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; REQUIRES: asserts
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; Check for sane output. This testcase used to crash.
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; CHECK: jumpr r31
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target triple = "hexagon"
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@g0 = external hidden unnamed_addr constant [9 x i16], align 8
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; Function Attrs: nounwind readnone
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define i64 @fred(i32 %a0) local_unnamed_addr #0 {
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b1:
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%v2 = icmp slt i32 %a0, 1
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br i1 %v2, label %b26, label %b3
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b3: ; preds = %b1
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%v4 = tail call i32 @llvm.hexagon.S2.clb(i32 %a0)
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%v5 = add nsw i32 %v4, -12
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%v6 = add nsw i32 %v4, -28
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%v7 = tail call i32 @llvm.hexagon.S2.asl.r.r(i32 %a0, i32 %v6)
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%v8 = add nsw i32 %v7, -8
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%v9 = tail call i32 @llvm.hexagon.S2.asl.r.r(i32 %a0, i32 %v5)
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%v10 = getelementptr inbounds [9 x i16], ptr @g0, i32 0, i32 %v8
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%v11 = load i16, ptr %v10, align 2
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%v12 = sext i16 %v11 to i32
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%v13 = shl nsw i32 %v12, 16
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%v14 = add nsw i32 %v7, -7
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%v15 = getelementptr inbounds [9 x i16], ptr @g0, i32 0, i32 %v14
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%v16 = load i16, ptr %v15, align 2
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%v17 = sub i16 %v11, %v16
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%v18 = and i32 %v9, 65535
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%v19 = zext i16 %v17 to i32
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%v20 = tail call i32 @llvm.hexagon.M2.mpyu.nac.ll.s0(i32 %v13, i32 %v18, i32 %v19) #1
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%v21 = add nsw i32 %v4, -32
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%v22 = zext i32 %v21 to i64
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%v23 = shl nuw i64 %v22, 32
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%v24 = zext i32 %v20 to i64
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%v25 = or i64 %v23, %v24
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br label %b26
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b26: ; preds = %b3, %b1
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%v27 = phi i64 [ %v25, %b3 ], [ 2147483648, %b1 ]
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ret i64 %v27
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}
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declare i32 @llvm.hexagon.S2.clb(i32) #1
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declare i32 @llvm.hexagon.S2.asl.r.r(i32, i32) #1
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declare i32 @llvm.hexagon.M2.mpyu.nac.ll.s0(i32, i32, i32) #1
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attributes #0 = { nounwind readnone "target-cpu"="hexagonv55" "target-features"="-hvx,-long-calls" }
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attributes #1 = { nounwind readnone }
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