2 ; RUN: llc < %s -mtriple=arm64-linux-gnu -mcpu=cortex-a53 -pre-RA-sched=source -enable-misched -verify-misched -debug-only=misched -o - 2>&1 > /dev/null | FileCheck %s
4 ; The Cortex-A53 machine model will cause the MADD instruction to be scheduled
5 ; much higher than the ADD instructions in order to hide latency. When not
6 ; specifying a subtarget, the MADD will remain near the end of the block.
8 ; CHECK: ********** MI Scheduling **********
10 ; CHECK: *** Final schedule for BB#2 ***
13 ; CHECK: ********** INTERVALS **********
14 @main.x = private unnamed_addr constant [8 x i32] [i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1, i32 1], align 4
15 @main.y = private unnamed_addr constant [8 x i32] [i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2, i32 2], align 4
17 ; Function Attrs: nounwind
18 define i32 @main() #0 {
20 %retval = alloca i32, align 4
21 %x = alloca [8 x i32], align 4
22 %y = alloca [8 x i32], align 4
23 %i = alloca i32, align 4
24 %xx = alloca i32, align 4
25 %yy = alloca i32, align 4
26 store i32 0, i32* %retval
27 %0 = bitcast [8 x i32]* %x to i8*
28 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast ([8 x i32]* @main.x to i8*), i64 32, i32 4, i1 false)
29 %1 = bitcast [8 x i32]* %y to i8*
30 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* bitcast ([8 x i32]* @main.y to i8*), i64 32, i32 4, i1 false)
31 store i32 0, i32* %xx, align 4
32 store i32 0, i32* %yy, align 4
33 store i32 0, i32* %i, align 4
36 for.cond: ; preds = %for.inc, %entry
37 %2 = load i32, i32* %i, align 4
38 %cmp = icmp slt i32 %2, 8
39 br i1 %cmp, label %for.body, label %for.end
41 for.body: ; preds = %for.cond
42 %3 = load i32, i32* %i, align 4
43 %idxprom = sext i32 %3 to i64
44 %arrayidx = getelementptr inbounds [8 x i32], [8 x i32]* %x, i32 0, i64 %idxprom
45 %4 = load i32, i32* %arrayidx, align 4
46 %add = add nsw i32 %4, 1
47 store i32 %add, i32* %xx, align 4
48 %5 = load i32, i32* %xx, align 4
49 %add1 = add nsw i32 %5, 12
50 store i32 %add1, i32* %xx, align 4
51 %6 = load i32, i32* %xx, align 4
52 %add2 = add nsw i32 %6, 23
53 store i32 %add2, i32* %xx, align 4
54 %7 = load i32, i32* %xx, align 4
55 %add3 = add nsw i32 %7, 34
56 store i32 %add3, i32* %xx, align 4
57 %8 = load i32, i32* %i, align 4
58 %idxprom4 = sext i32 %8 to i64
59 %arrayidx5 = getelementptr inbounds [8 x i32], [8 x i32]* %y, i32 0, i64 %idxprom4
60 %9 = load i32, i32* %arrayidx5, align 4
61 %10 = load i32, i32* %yy, align 4
62 %mul = mul nsw i32 %10, %9
63 store i32 %mul, i32* %yy, align 4
66 for.inc: ; preds = %for.body
67 %11 = load i32, i32* %i, align 4
68 %inc = add nsw i32 %11, 1
69 store i32 %inc, i32* %i, align 4
72 for.end: ; preds = %for.cond
73 %12 = load i32, i32* %xx, align 4
74 %13 = load i32, i32* %yy, align 4
75 %add6 = add nsw i32 %12, %13
80 ; The Cortex-A53 machine model will cause the FDIVvvv_42 to be raised to
81 ; hide latency. Whereas normally there would only be a single FADDvvv_4s
82 ; after it, this test checks to make sure there are more than one.
84 ; CHECK: ********** MI Scheduling **********
85 ; CHECK: neon4xfloat:BB#0
86 ; CHECK: *** Final schedule for BB#0 ***
90 ; CHECK: ********** INTERVALS **********
91 define <4 x float> @neon4xfloat(<4 x float> %A, <4 x float> %B) {
92 %tmp1 = fadd <4 x float> %A, %B;
93 %tmp2 = fadd <4 x float> %A, %tmp1;
94 %tmp3 = fadd <4 x float> %A, %tmp2;
95 %tmp4 = fadd <4 x float> %A, %tmp3;
96 %tmp5 = fadd <4 x float> %A, %tmp4;
97 %tmp6 = fadd <4 x float> %A, %tmp5;
98 %tmp7 = fadd <4 x float> %A, %tmp6;
99 %tmp8 = fadd <4 x float> %A, %tmp7;
100 %tmp9 = fdiv <4 x float> %A, %B;
101 %tmp10 = fadd <4 x float> %tmp8, %tmp9;
103 ret <4 x float> %tmp10
106 ; Function Attrs: nounwind
107 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #1
109 attributes #0 = { nounwind "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
110 attributes #1 = { nounwind }
113 ; Regression Test for PR19761
114 ; [ARM64] Cortex-a53 schedule mode can't handle NEON post-increment load
116 ; Nothing explicit to check other than llc not crashing.
117 define { <16 x i8>, <16 x i8> } @test_v16i8_post_imm_ld2(i8* %A, i8** %ptr) {
118 %ld2 = tail call { <16 x i8>, <16 x i8> } @llvm.aarch64.neon.ld2.v16i8.p0i8(i8* %A)
119 %tmp = getelementptr i8, i8* %A, i32 32
120 store i8* %tmp, i8** %ptr
121 ret { <16 x i8>, <16 x i8> } %ld2
124 declare { <16 x i8>, <16 x i8> } @llvm.aarch64.neon.ld2.v16i8.p0i8(i8*)
126 ; Regression Test for PR20057.
128 ; Cortex-A53 machine model stalls on A53UnitFPMDS contention. Instructions that
129 ; are otherwise ready are jammed in the pending queue.
130 ; CHECK: ********** MI Scheduling **********
131 ; CHECK: testResourceConflict
132 ; CHECK: *** Final schedule for BB#0 ***
134 ; CHECK: ********** INTERVALS **********
135 define void @testResourceConflict(float* %ptr) {
137 %add1 = fadd float undef, undef
138 %mul2 = fmul float undef, undef
139 %add3 = fadd float %mul2, undef
140 %mul4 = fmul float undef, %add3
141 %add5 = fadd float %mul4, undef
142 %sub6 = fsub float 0.000000e+00, undef
143 %sub7 = fsub float %add5, undef
144 %div8 = fdiv float 1.000000e+00, undef
145 %mul9 = fmul float %div8, %sub7
146 %mul14 = fmul float %sub6, %div8
147 %mul10 = fsub float -0.000000e+00, %mul14
148 %mul15 = fmul float undef, %div8
149 %mul11 = fsub float -0.000000e+00, %mul15
150 %mul12 = fmul float 0.000000e+00, %div8
151 %mul13 = fmul float %add1, %mul9
152 %mul21 = fmul float %add5, %mul11
153 %add22 = fadd float %mul13, %mul21
154 store float %add22, float* %ptr, align 4
155 %mul28 = fmul float %add1, %mul10
156 %mul33 = fmul float %add5, %mul12
157 %add34 = fadd float %mul33, %mul28
158 store float %add34, float* %ptr, align 4
159 %mul240 = fmul float undef, %mul9
160 %add246 = fadd float %mul240, undef
161 store float %add246, float* %ptr, align 4
162 %mul52 = fmul float undef, %mul10
163 %mul57 = fmul float undef, %mul12
164 %add58 = fadd float %mul57, %mul52
165 store float %add58, float* %ptr, align 4
166 %mul27 = fmul float 0.000000e+00, %mul9
167 %mul81 = fmul float undef, %mul10
168 %add82 = fadd float %mul27, %mul81
169 store float %add82, float* %ptr, align 4
170 call void @llvm.trap()
174 declare void @llvm.trap()
176 ; Regression test for PR20057: "permanent hazard"'
177 ; Resource contention on LDST.
178 ; CHECK: ********** MI Scheduling **********
179 ; CHECK: testLdStConflict
180 ; CHECK: *** Final schedule for BB#1 ***
183 ; CHECK: ********** INTERVALS **********
184 define void @testLdStConflict() {
189 %0 = call { <2 x i64>, <2 x i64>, <2 x i64>, <2 x i64> } @llvm.aarch64.neon.ld4.v2i64.p0i8(i8* null)
190 %ptr = bitcast i8* undef to <2 x i64>*
191 store <2 x i64> zeroinitializer, <2 x i64>* %ptr, align 4
192 %ptr1 = bitcast i8* undef to <2 x i64>*
193 store <2 x i64> zeroinitializer, <2 x i64>* %ptr1, align 4
194 %ptr2 = bitcast i8* undef to <2 x i64>*
195 store <2 x i64> zeroinitializer, <2 x i64>* %ptr2, align 4
196 %ptr3 = bitcast i8* undef to <2 x i64>*
197 store <2 x i64> zeroinitializer, <2 x i64>* %ptr3, align 4
198 %ptr4 = bitcast i8* undef to <2 x i64>*
199 store <2 x i64> zeroinitializer, <2 x i64>* %ptr4, align 4
203 declare { <2 x i64>, <2 x i64>, <2 x i64>, <2 x i64> } @llvm.aarch64.neon.ld4.v2i64.p0i8(i8*)