1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -O1 -mcpu=cortex-a15 -mtriple=armv7-linux-gnueabi -verify-machineinstrs < %s | FileCheck %s
4 ; The generated code for this test uses a vld1.32 instruction
5 ; to write the lane 1 of a D register containing the value of
6 ; <2 x float> %B. Since the D register is defined, it would
7 ; be incorrect to fully write it (with a vmov.f64) before the
8 ; vld1.32 instruction. The test checks that a vmov.f64 was not
11 define <2 x float> @t1(ptr %A, <2 x float> %B) {
14 ; CHECK-NEXT: vmov d16, r2, r3
15 ; CHECK-NEXT: vld1.32 {d16[1]}, [r0:32]
16 ; CHECK-NEXT: vmov r0, r1, d16
18 %tmp2 = load float, ptr %A, align 4
19 %tmp3 = insertelement <2 x float> %B, float %tmp2, i32 1
23 ; The code generated by this test uses a vld1.32 instruction.
24 ; We check that a dependency breaking vmov* instruction was
27 define void @t2(ptr %in, ptr %out, i32 %n) {
29 ; CHECK: @ %bb.0: @ %entry
30 ; CHECK-NEXT: add r0, r0, #4
31 ; CHECK-NEXT: add r1, r1, #4
32 ; CHECK-NEXT: .LBB1_1: @ %loop
33 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
34 ; CHECK-NEXT: vmov.f64 d16, #5.000000e-01
35 ; CHECK-NEXT: vld1.32 {d16[0]}, [r0:32]
36 ; CHECK-NEXT: vmovl.u8 q8, d16
37 ; CHECK-NEXT: vuzp.8 d16, d18
38 ; CHECK-NEXT: vst1.32 {d16[0]}, [r1:32]!
39 ; CHECK-NEXT: add r0, r0, #4
40 ; CHECK-NEXT: subs r2, r2, #1
41 ; CHECK-NEXT: beq .LBB1_1
42 ; CHECK-NEXT: @ %bb.2: @ %ret
47 %oldcount = phi i32 [0, %entry], [%newcount, %loop]
48 %newcount = add i32 %oldcount, 1
49 %p1 = getelementptr <4 x i8>, ptr %in, i32 %newcount
50 %p2 = getelementptr <4 x i8>, ptr %out, i32 %newcount
51 %tmp1 = load <4 x i8> , ptr %p1, align 4
52 store <4 x i8> %tmp1, ptr %p2
53 %cmp = icmp eq i32 %newcount, %n
54 br i1 %cmp, label %loop, label %ret
59 ; If minimizing size, that overrides perf, so no extra vmov.f64 here.
61 ; TODO: This (and above) could use a splat load to remove the false
62 ; dependence with no extra instruction.
64 define void @t2_minsize(ptr %in, ptr %out, i32 %n) minsize {
65 ; CHECK-LABEL: t2_minsize:
66 ; CHECK: @ %bb.0: @ %entry
67 ; CHECK-NEXT: add r0, r0, #4
68 ; CHECK-NEXT: add r1, r1, #4
69 ; CHECK-NEXT: .LBB2_1: @ %loop
70 ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1
71 ; CHECK-NEXT: vld1.32 {d16[0]}, [r0:32]
72 ; CHECK-NEXT: vmovl.u8 q8, d16
73 ; CHECK-NEXT: vuzp.8 d16, d18
74 ; CHECK-NEXT: vst1.32 {d16[0]}, [r1:32]!
75 ; CHECK-NEXT: add r0, r0, #4
76 ; CHECK-NEXT: subs r2, r2, #1
77 ; CHECK-NEXT: beq .LBB2_1
78 ; CHECK-NEXT: @ %bb.2: @ %ret
83 %oldcount = phi i32 [0, %entry], [%newcount, %loop]
84 %newcount = add i32 %oldcount, 1
85 %p1 = getelementptr <4 x i8>, ptr %in, i32 %newcount
86 %p2 = getelementptr <4 x i8>, ptr %out, i32 %newcount
87 %tmp1 = load <4 x i8> , ptr %p1, align 4
88 store <4 x i8> %tmp1, ptr %p2
89 %cmp = icmp eq i32 %newcount, %n
90 br i1 %cmp, label %loop, label %ret