xref: /llvm-project/llvm/test/CodeGen/Thumb2/LowOverheadLoops/predicated-liveout-unknown-lanes.ll (revision b31fffbc7f1e0491bf599e82b7195e320d26e140)
1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc -mtriple=thumbv8.1m.main-none-none-eabi -mattr=+mve.fp -O3 -tail-predication=force-enabled-no-reductions %s -o - | FileCheck %s
3
4define arm_aapcs_vfpcc <4 x float> @arm_max_no_idx_f32_mve(ptr %pSrc, i32 %blockSize, ptr nocapture %pResult) {
5; CHECK-LABEL: arm_max_no_idx_f32_mve:
6; CHECK:       @ %bb.0: @ %entry
7; CHECK-NEXT:    .save {r7, lr}
8; CHECK-NEXT:    push {r7, lr}
9; CHECK-NEXT:    subs r2, r1, #4
10; CHECK-NEXT:    movw r3, #0
11; CHECK-NEXT:    movt r3, #65408
12; CHECK-NEXT:    vdup.32 q0, r3
13; CHECK-NEXT:    dlstp.32 lr, r1
14; CHECK-NEXT:  .LBB0_1: @ %do.body
15; CHECK-NEXT:    @ =>This Inner Loop Header: Depth=1
16; CHECK-NEXT:    vldrw.u32 q1, [r0], #16
17; CHECK-NEXT:    vmaxnm.f32 q0, q1, q0
18; CHECK-NEXT:    letp lr, .LBB0_1
19; CHECK-NEXT:  @ %bb.2: @ %do.end
20; CHECK-NEXT:    pop {r7, pc}
21entry:
22  br label %do.body
23
24do.body:                                          ; preds = %do.body, %entry
25  %blockSize.addr.0 = phi i32 [ %blockSize, %entry ], [ %sub, %do.body ]
26  %curExtremValVec.0 = phi <4 x float> [ <float 0xFFF0000000000000, float 0xFFF0000000000000, float 0xFFF0000000000000, float 0xFFF0000000000000>, %entry ], [ %3, %do.body ]
27  %pSrc.addr.0 = phi ptr [ %pSrc, %entry ], [ %add.ptr, %do.body ]
28  %0 = tail call <4 x i1> @llvm.arm.mve.vctp32(i32 %blockSize.addr.0)
29  %1 = bitcast ptr %pSrc.addr.0 to ptr
30  %2 = tail call fast <4 x float> @llvm.masked.load.v4f32.p0(ptr %1, i32 4, <4 x i1> %0, <4 x float> zeroinitializer)
31  %3 = tail call fast <4 x float> @llvm.arm.mve.max.predicated.v4f32.v4i1(<4 x float> %2, <4 x float> %curExtremValVec.0, i32 0, <4 x i1> %0, <4 x float> %curExtremValVec.0)
32  %add.ptr = getelementptr inbounds float, ptr %pSrc.addr.0, i32 4
33  %sub = add i32 %blockSize.addr.0, -4
34  %cmp = icmp sgt i32 %sub, 0
35  br i1 %cmp, label %do.body, label %do.end
36
37do.end:                                           ; preds = %do.body
38  ret <4 x float> %3
39}
40
41declare <4 x i1> @llvm.arm.mve.vctp32(i32)
42
43declare <4 x float> @llvm.masked.load.v4f32.p0(ptr, i32 immarg, <4 x i1>, <4 x float>)
44
45declare <4 x float> @llvm.arm.mve.max.predicated.v4f32.v4i1(<4 x float>, <4 x float>, i32, <4 x i1>, <4 x float>)
46