derek.holloway
7502bf64a4
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45 lines
1.7 KiB
LLVM
45 lines
1.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt %s -S -mtriple=riscv64 -passes=loop-unroll | FileCheck %s
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; Demonstrate handling of invalid costs in LoopUnroll. This test uses
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; scalable vectors on RISCV w/o +V to create a situation where a construct
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; can not be lowered, and is thus invalid regardless of what the target
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; does or does not implement in terms of a cost model.
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target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"
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target triple = "riscv64-unknown-unknown"
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define void @invalid(ptr %p) nounwind ssp {
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; CHECK-LABEL: @invalid(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br label [[FOR_BODY:%.*]]
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; CHECK: for.body:
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; CHECK-NEXT: [[I_0:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
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; CHECK-NEXT: [[A:%.*]] = load <vscale x 1 x i8>, ptr [[P:%.*]], align 1
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; CHECK-NEXT: [[B:%.*]] = add <vscale x 1 x i8> [[A]], [[A]]
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; CHECK-NEXT: store <vscale x 1 x i8> [[B]], ptr [[P]], align 1
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; CHECK-NEXT: [[INC]] = add nsw i32 [[I_0]], 1
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[I_0]], 10
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; CHECK-NEXT: br i1 [[CMP]], label [[FOR_BODY]], label [[FOR_END:%.*]]
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; CHECK: for.end:
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; CHECK-NEXT: ret void
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;
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
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%a = load <vscale x 1 x i8>, ptr %p
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%b = add <vscale x 1 x i8> %a, %a
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store <vscale x 1 x i8> %b, ptr %p
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%inc = add nsw i32 %i.0, 1
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%cmp = icmp slt i32 %i.0, 10
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br i1 %cmp, label %for.body, label %for.end
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for.end: ; preds = %for.body
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ret void
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}
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declare void @f()
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