derek.holloway
7502bf64a4
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40 lines
1.2 KiB
LLVM
40 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -O3 < %s -mtriple=riscv64 -mattr=+v | FileCheck %s
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define i32 @test(ptr %a, i64 %n) {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: li a3, 0
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; CHECK-NEXT: vsetvli a2, zero, e32, m1, ta, ma
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; CHECK-NEXT: vmv.s.x v8, zero
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; CHECK-NEXT: .LBB0_1: # %loop
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: vl1re32.v v9, (a0)
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; CHECK-NEXT: mv a2, a3
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; CHECK-NEXT: addi a1, a1, -1
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; CHECK-NEXT: vredsum.vs v9, v9, v8
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; CHECK-NEXT: vmv.x.s a3, v9
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; CHECK-NEXT: addw a3, a3, a3
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; CHECK-NEXT: addi a0, a0, 8
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; CHECK-NEXT: bnez a1, .LBB0_1
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; CHECK-NEXT: # %bb.2: # %exit
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; CHECK-NEXT: mv a0, a2
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; CHECK-NEXT: ret
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entry:
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br label %loop
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loop:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.inc, %loop ]
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%sum = phi i32 [ 0, %entry ], [ %sum.inc, %loop ]
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%idx = getelementptr inbounds ptr, ptr %a, i64 %indvar
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%data = load <vscale x 2 x i32>, ptr %idx
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%reduce = tail call i32 @llvm.vector.reduce.add.nxv2i32(<vscale x 2 x i32> %data)
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%sum.inc = add i32 %reduce, %reduce
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%indvar.inc = add i64 %indvar, 1
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%cmp = icmp eq i64 %indvar.inc, %n
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br i1 %cmp, label %exit, label %loop
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exit:
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ret i32 %sum
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}
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