1 ; RUN: llc -O0 -global-isel -global-isel-abort=2 -pass-remarks-missed='gisel*' -verify-machineinstrs %s -o %t.out 2> %t.err
2 ; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-OUT < %t.out
3 ; RUN: FileCheck %s --check-prefix=FALLBACK-WITH-REPORT-ERR < %t.err
4 ; RUN: not --crash llc -global-isel -mtriple aarch64_be %s -o - 2>&1 | FileCheck %s --check-prefix=BIG-ENDIAN
5 ; This file checks that the fallback path to selection dag works.
6 ; The test is fragile in the sense that it must be updated to expose
7 ; something that fails with global-isel.
8 ; When we cannot produce a test case anymore, that means we can remove
11 target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
12 target triple = "aarch64--"
14 ; BIG-ENDIAN: unable to translate in big endian mode
16 ; Make sure we don't mess up metadata arguments.
17 declare void @llvm.write_register.i64(metadata, i64)
19 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: G_WRITE_REGISTER !0, %0:_(s64) (in function: test_write_register_intrin)
20 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for test_write_register_intrin
21 ; FALLBACK-WITH-REPORT-LABEL: test_write_register_intrin:
22 define void @test_write_register_intrin() {
23 call void @llvm.write_register.i64(metadata !{!"sp"}, i64 0)
27 @_ZTIi = external global ptr
28 declare i32 @__gxx_personality_v0(...)
30 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %2:_(<2 x p0>) = G_INSERT_VECTOR_ELT %0:_, %{{[0-9]+}}:_(p0), %{{[0-9]+}}:_(s32) (in function: vector_of_pointers_insertelement)
31 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for vector_of_pointers_insertelement
32 ; FALLBACK-WITH-REPORT-OUT-LABEL: vector_of_pointers_insertelement:
33 define void @vector_of_pointers_insertelement() {
37 %dummy = insertelement <2 x ptr> %vec, ptr null, i32 0
38 store <2 x ptr> %dummy, ptr undef
42 %vec = load <2 x ptr>, ptr undef
46 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: cannot select: RET_ReallyLR implicit $x0 (in function: strict_align_feature)
47 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for strict_align_feature
48 ; FALLBACK-WITH-REPORT-OUT-LABEL: strict_align_feature
49 define i64 @strict_align_feature(ptr %p) #0 {
50 %x = load i64, ptr %p, align 1
54 attributes #0 = { "target-features"="+strict-align" }
56 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: call
57 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for direct_mem
58 ; FALLBACK-WITH-REPORT-OUT-LABEL: direct_mem
59 define void @direct_mem(i32 %x, i32 %y) {
61 tail call void asm sideeffect "", "imr,imr,~{memory}"(i32 %x, i32 %y)
65 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to lower function{{.*}}scalable_arg
66 ; FALLBACK-WITH-REPORT-OUT-LABEL: scalable_arg
67 define <vscale x 16 x i8> @scalable_arg(<vscale x 16 x i1> %pred, ptr %addr) #1 {
68 %res = call <vscale x 16 x i8> @llvm.aarch64.sve.ld1.nxv16i8(<vscale x 16 x i1> %pred, ptr %addr)
69 ret <vscale x 16 x i8> %res
72 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to lower function{{.*}}scalable_ret
73 ; FALLBACK-WITH-REPORT-OUT-LABEL: scalable_ret
74 define <vscale x 16 x i8> @scalable_ret(ptr %addr) #1 {
75 %pred = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 0)
76 %res = call <vscale x 16 x i8> @llvm.aarch64.sve.ld1.nxv16i8(<vscale x 16 x i1> %pred, ptr %addr)
77 ret <vscale x 16 x i8> %res
80 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction{{.*}}scalable_call
81 ; FALLBACK-WITH-REPORT-OUT-LABEL: scalable_call
82 define i8 @scalable_call(ptr %addr) #1 {
83 %pred = call <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 0)
84 %vec = call <vscale x 16 x i8> @llvm.aarch64.sve.ld1.nxv16i8(<vscale x 16 x i1> %pred, ptr %addr)
85 %res = extractelement <vscale x 16 x i8> %vec, i32 0
89 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction{{.*}}scalable_alloca
90 ; FALLBACK-WITH-REPORT-OUT-LABEL: scalable_alloca
91 define void @scalable_alloca() #1 {
92 %local0 = alloca <vscale x 16 x i8>
93 load volatile <vscale x 16 x i8>, ptr %local0
97 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction{{.*}}asm_indirect_output
98 ; FALLBACK-WITH-REPORT-OUT-LABEL: asm_indirect_output
99 define void @asm_indirect_output() {
101 %ap = alloca ptr, align 8
102 %0 = load ptr, ptr %ap, align 8
103 call void asm sideeffect "", "=*r|m,0,~{memory}"(ptr elementtype(ptr) %ap, ptr %0)
107 %struct.foo = type { [8 x i64] }
109 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction:{{.*}}ld64b{{.*}}asm_output_ls64
110 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for asm_output_ls64
111 ; FALLBACK-WITH-REPORT-OUT-LABEL: asm_output_ls64
112 define void @asm_output_ls64(ptr %output, ptr %addr) #2 {
114 %val = call i512 asm sideeffect "ld64b $0,[$1]", "=r,r,~{memory}"(ptr %addr)
115 store i512 %val, ptr %output, align 8
119 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction:{{.*}}st64b{{.*}}asm_input_ls64
120 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for asm_input_ls64
121 ; FALLBACK-WITH-REPORT-OUT-LABEL: asm_input_ls64
122 define void @asm_input_ls64(ptr %input, ptr %addr) #2 {
124 %val = load i512, ptr %input, align 8
125 call void asm sideeffect "st64b $0,[$1]", "r,r,~{memory}"(i512 %val, ptr %addr)
129 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to legalize instruction: %4:_(s128), %5:_(s1) = G_UMULO %0:_, %6:_ (in function: umul_s128)
130 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for umul_s128
131 ; FALLBACK-WITH-REPORT-OUT-LABEL: umul_s128
132 declare {i128, i1} @llvm.umul.with.overflow.i128(i128, i128) nounwind readnone
133 define zeroext i1 @umul_s128(i128 %v1, ptr %res) {
135 %t = call {i128, i1} @llvm.umul.with.overflow.i128(i128 %v1, i128 2)
136 %val = extractvalue {i128, i1} %t, 0
137 %obit = extractvalue {i128, i1} %t, 1
138 store i128 %val, ptr %res
142 ; FALLBACK-WITH-REPORT-ERR: remark: <unknown>:0:0: unable to translate instruction: {{.*}}llvm.experimental.gc.statepoint{{.*}} (in function: gc_intr)
143 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for gc_intr
144 ; FALLBACK-WITH-REPORT-OUT-LABEL: gc_intr
146 declare token @llvm.experimental.gc.statepoint.p0(i64 immarg, i32 immarg, ptr, i32 immarg, i32 immarg, ...)
147 declare i32 @llvm.experimental.gc.result(token)
149 declare i32 @extern_returning_i32()
151 define i32 @gc_intr() gc "statepoint-example" {
152 %statepoint_token = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(i32 ()) @extern_returning_i32, i32 0, i32 0, i32 0, i32 0) [ "deopt"() ]
153 %ret = call i32 (token) @llvm.experimental.gc.result(token %statepoint_token)
157 declare void @llvm.assume(i1)
159 ; FALLBACK-WITH-REPORT-ERR: <unknown>:0:0: unable to translate instruction: call: ' %0 = tail call { i64, i32 } asm "subs $0, $0, #3", "=r,={@cchi},0,~{dirflag},~{fpsr},~{flags}"(i64 %a)' (in function: inline_asm_with_output_constraint)
160 ; FALLBACK-WITH-REPORT-ERR: warning: Instruction selection used fallback path for inline_asm_with_output_constraint
161 ; FALLBACK-WITH-REPORT-OUT-LABEL: inline_asm_with_output_constraint
162 define i32 @inline_asm_with_output_constraint(i64 %a) {
164 %0 = tail call { i64, i32 } asm "subs $0, $0, #3", "=r,={@cchi},0,~{dirflag},~{fpsr},~{flags}"(i64 %a)
165 %asmresult1 = extractvalue { i64, i32 } %0, 1
166 %1 = icmp ult i32 %asmresult1, 2
167 tail call void @llvm.assume(i1 %1)
171 attributes #1 = { "target-features"="+sve" }
172 attributes #2 = { "target-features"="+ls64" }
174 declare <vscale x 16 x i1> @llvm.aarch64.sve.ptrue.nxv16i1(i32 %pattern)
175 declare <vscale x 16 x i8> @llvm.aarch64.sve.ld1.nxv16i8(<vscale x 16 x i1>, ptr)