70 lines
3.0 KiB
LLVM
70 lines
3.0 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -O3 -tail-predication=enabled -mtriple=thumbv8.1m.main -mattr=+mve,+mve.fp %s -o - | FileCheck %s
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target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "thumbv8.1m-arm-none-eabi"
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; Tests that LSR will not interfere with the VCTP intrinsic,
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; and that this loop will correctly become tail-predicated.
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define arm_aapcs_vfpcc float @vctpi32(float* %0, i32 %1) {
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; CHECK-LABEL: vctpi32:
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; CHECK: @ %bb.0:
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; CHECK-NEXT: push {r7, lr}
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; CHECK-NEXT: vmvn.i32 q1, #0x1f
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; CHECK-NEXT: vmov.32 q3[0], r0
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; CHECK-NEXT: movs r2, #0
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; CHECK-NEXT: vadd.i32 q1, q3, q1
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; CHECK-NEXT: subs r3, r1, #1
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; CHECK-NEXT: vidup.u32 q2, r2, #8
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; CHECK-NEXT: vmov r0, s4
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; CHECK-NEXT: vadd.i32 q1, q2, r0
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; CHECK-NEXT: vmov.i32 q0, #0x0
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; CHECK-NEXT: dlstp.32 lr, r3
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; CHECK-NEXT: .LBB0_1: @ =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: vldrw.u32 q2, [q1, #32]!
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; CHECK-NEXT: vadd.f32 q0, q0, q2
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; CHECK-NEXT: letp lr, .LBB0_1
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; CHECK-NEXT: @ %bb.2:
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; CHECK-NEXT: bl vecAddAcrossF32Mve
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; CHECK-NEXT: vmov s0, r0
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; CHECK-NEXT: vcvt.f32.s32 s0, s0
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; CHECK-NEXT: vabs.f32 s0, s0
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; CHECK-NEXT: pop {r7, pc}
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%3 = tail call { <4 x i32>, i32 } @llvm.arm.mve.vidup.v4i32(i32 0, i32 8)
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%4 = extractvalue { <4 x i32>, i32 } %3, 0
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%5 = add nsw i32 %1, -1
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%6 = ptrtoint float* %0 to i32
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%7 = insertelement <4 x i32> undef, i32 %6, i32 0
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%8 = add <4 x i32> %7, <i32 -32, i32 undef, i32 undef, i32 undef>
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%9 = shufflevector <4 x i32> %8, <4 x i32> undef, <4 x i32> zeroinitializer
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%10 = add <4 x i32> %4, %9
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br label %11
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11:
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%12 = phi i32 [ %5, %2 ], [ %20, %11 ]
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%13 = phi <4 x float> [ zeroinitializer, %2 ], [ %19, %11 ]
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%14 = phi <4 x i32> [ %10, %2 ], [ %17, %11 ]
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%15 = tail call <4 x i1> @llvm.arm.mve.vctp32(i32 %12)
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%16 = tail call { <4 x float>, <4 x i32> } @llvm.arm.mve.vldr.gather.base.wb.predicated.v4f32.v4i32.v4i1(<4 x i32> %14, i32 32, <4 x i1> %15)
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%17 = extractvalue { <4 x float>, <4 x i32> } %16, 1
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%18 = extractvalue { <4 x float>, <4 x i32> } %16, 0
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%19 = tail call <4 x float> @llvm.arm.mve.add.predicated.v4f32.v4i1(<4 x float> %13, <4 x float> %18, <4 x i1> %15, <4 x float> %13)
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%20 = add nsw i32 %12, -4
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%21 = icmp sgt i32 %12, 4
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br i1 %21, label %11, label %22
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22:
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%23 = tail call arm_aapcs_vfpcc i32 bitcast (i32 (...)* @vecAddAcrossF32Mve to i32 (<4 x float>)*)(<4 x float> %19)
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%24 = sitofp i32 %23 to float
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%25 = tail call float @llvm.fabs.f32(float %24)
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ret float %25
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}
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declare { <4 x i32>, i32 } @llvm.arm.mve.vidup.v4i32(i32, i32)
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declare <4 x i1> @llvm.arm.mve.vctp32(i32)
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declare { <4 x float>, <4 x i32> } @llvm.arm.mve.vldr.gather.base.wb.predicated.v4f32.v4i32.v4i1(<4 x i32>, i32, <4 x i1>)
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declare <4 x float> @llvm.arm.mve.add.predicated.v4f32.v4i1(<4 x float>, <4 x float>, <4 x i1>, <4 x float>)
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declare arm_aapcs_vfpcc i32 @vecAddAcrossF32Mve(...)
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declare float @llvm.fabs.f32(float)
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