29 lines
1.2 KiB
LLVM
29 lines
1.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv32 -mattr=+experimental-v -verify-machineinstrs < %s | FileCheck %s
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; Test that the prepareSREMEqFold optimization doesn't crash on scalable
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; vector types. RVV doesn't have ROTR or ROTL operations so the optimization
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; itself doesn't kick in.
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define <vscale x 4 x i1> @srem_eq_fold_nxv4i8(<vscale x 4 x i8> %va) {
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; CHECK-LABEL: srem_eq_fold_nxv4i8:
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; CHECK: # %bb.0:
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; CHECK-NEXT: addi a0, zero, 43
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; CHECK-NEXT: vsetvli a1, zero, e8,mf2,ta,mu
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; CHECK-NEXT: vmulh.vx v25, v8, a0
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; CHECK-NEXT: vadd.vi v25, v25, 0
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; CHECK-NEXT: vsrl.vi v26, v25, 7
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; CHECK-NEXT: vand.vi v26, v26, -1
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; CHECK-NEXT: vadd.vv v25, v25, v26
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; CHECK-NEXT: addi a0, zero, 6
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; CHECK-NEXT: vmul.vx v25, v25, a0
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; CHECK-NEXT: vsub.vv v25, v8, v25
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; CHECK-NEXT: vmseq.vi v0, v25, 0
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; CHECK-NEXT: ret
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%head_six = insertelement <vscale x 4 x i8> undef, i8 6, i32 0
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%splat_six = shufflevector <vscale x 4 x i8> %head_six, <vscale x 4 x i8> undef, <vscale x 4 x i32> zeroinitializer
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%rem = srem <vscale x 4 x i8> %va, %splat_six
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%cc = icmp eq <vscale x 4 x i8> %rem, zeroinitializer
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ret <vscale x 4 x i1> %cc
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}
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