1 # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
2 # RUN: llc -run-pass=thumb2-reduce-size %s -o - | FileCheck %s
5 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
6 target triple = "thumbv8m.main"
8 %list_head = type { ptr, ptr }
9 %list_data = type { i16, i16 }
11 define ptr @reg_reg_it_block(ptr %a, i16 zeroext %b) {
15 while.begin: ; preds = %while.body.end, %entry
16 %list.addr.i = phi ptr [ %ld.5, %while.body.end ], [ %a, %entry ]
17 %info.i = getelementptr inbounds %list_head, ptr %list.addr.i, i32 0, i32 1
18 %ld.0 = load ptr, ptr %info.i, align 4
19 %data16.i1 = bitcast ptr %ld.0 to ptr
20 %ld.1 = load i16, ptr %data16.i1, align 2
21 %xor.1 = xor i16 %ld.1, %b
22 %cmp.i = icmp eq i16 %xor.1, 0
23 br i1 %cmp.i, label %exit, label %while.body.a
25 while.body.a: ; preds = %while.begin
26 %next.i2 = bitcast ptr %list.addr.i to ptr
27 %ld.2 = load ptr, ptr %next.i2, align 4
28 %cmp.i.1 = icmp eq ptr %ld.2, null
29 br i1 %cmp.i.1, label %exit, label %it.block
31 it.block: ; preds = %while.body.a
32 %info.i.1 = getelementptr inbounds %list_head, ptr %ld.2, i32 0, i32 1
33 %ld.3 = load ptr, ptr %info.i.1, align 4
34 %data16.i.13 = bitcast ptr %ld.3 to ptr
35 %ld.4 = load i16, ptr %data16.i.13, align 2
36 %xor.2 = xor i16 %ld.4, %b
37 %cmp.i.2 = icmp eq i16 %xor.2, 0
38 br i1 %cmp.i.2, label %exit, label %while.body.end
40 while.body.end: ; preds = %it.block
41 %next.i.14 = bitcast ptr %ld.2 to ptr
42 %ld.5 = load ptr, ptr %next.i.14, align 4
43 %cmp.i.3 = icmp eq ptr %ld.5, null
44 br i1 %cmp.i.3, label %exit, label %while.begin
46 exit: ; preds = %while.body.end, %it.block, %while.body.a, %while.begin
47 %res = phi ptr [ %list.addr.i, %while.begin ], [ %ld.2, %while.body.a ], [ %ld.2, %it.block ], [ %ld.5, %while.body.end ]
51 define i16 @op_not_killed(ptr %a, i16 zeroext %b) {
55 while.begin: ; preds = %while.body.end, %entry
56 %list.addr.i = phi ptr [ %ld.5, %while.body.end ], [ %a, %entry ]
57 %info.i = getelementptr inbounds %list_head, ptr %list.addr.i, i32 0, i32 1
58 %ld.0 = load ptr, ptr %info.i, align 4
59 %data16.i1 = bitcast ptr %ld.0 to ptr
60 %ld.1 = load i16, ptr %data16.i1, align 2
61 %xor.1 = xor i16 %ld.1, %b
62 %cmp.i = icmp eq i16 %xor.1, 0
63 br i1 %cmp.i, label %exit, label %while.body.a
65 while.body.a: ; preds = %while.begin
66 %next.i2 = bitcast ptr %list.addr.i to ptr
67 %ld.2 = load ptr, ptr %next.i2, align 4
68 %cmp.i.1 = icmp eq ptr %ld.2, null
69 br i1 %cmp.i.1, label %exit, label %it.block
71 it.block: ; preds = %while.body.a
72 %info.i.1 = getelementptr inbounds %list_head, ptr %ld.2, i32 0, i32 1
73 %ld.3 = load ptr, ptr %info.i.1, align 4
74 %data16.i.13 = bitcast ptr %ld.3 to ptr
75 %ld.4 = load i16, ptr %data16.i.13, align 2
76 %xor.2 = xor i16 %ld.4, %b
77 %cmp.i.2 = icmp eq i16 %xor.2, 0
78 br i1 %cmp.i.2, label %exit, label %while.body.end
80 while.body.end: ; preds = %it.block
81 %next.i.14 = bitcast ptr %ld.2 to ptr
82 %ld.5 = load ptr, ptr %next.i.14, align 4
83 %cmp.i.3 = icmp eq ptr %ld.5, null
84 br i1 %cmp.i.3, label %exit, label %while.begin
86 exit: ; preds = %while.body.end, %it.block, %while.body.a, %while.begin
87 %res = phi i16 [ %ld.1, %while.begin ], [ %ld.1, %while.body.a ], [ %ld.4, %it.block ], [ %ld.4, %while.body.end ]
93 name: reg_reg_it_block
94 tracksRegLiveness: true
96 - { reg: '$r0', virtual-reg: '' }
97 - { reg: '$r1', virtual-reg: '' }
99 ; CHECK-LABEL: name: reg_reg_it_block
101 ; CHECK: successors: %bb.2(0x80000000)
102 ; CHECK: liveins: $r0, $r1
103 ; CHECK: t2B %bb.2, 14 /* CC::al */, $noreg
104 ; CHECK: bb.1.while.body.end:
105 ; CHECK: successors: %bb.2(0x80000000)
106 ; CHECK: liveins: $r0, $r1
107 ; CHECK: renamable $r0 = tLDRi killed renamable $r0, 0, 14 /* CC::al */, $noreg :: (load (s32) from %ir.next.i.14)
108 ; CHECK: tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
109 ; CHECK: BUNDLE implicit-def dead $itstate, implicit killed $cpsr, implicit $r0 {
110 ; CHECK: t2IT 0, 8, implicit-def $itstate
111 ; CHECK: tBX_RET 0 /* CC::eq */, killed $cpsr, implicit $r0, implicit internal killed $itstate
113 ; CHECK: bb.2.while.begin:
114 ; CHECK: successors: %bb.4(0x04000000), %bb.3(0x7c000000)
115 ; CHECK: liveins: $r0, $r1
116 ; CHECK: renamable $r2 = tLDRi renamable $r0, 1, 14 /* CC::al */, $noreg :: (load (s32) from %ir.info.i)
117 ; CHECK: renamable $r2 = tLDRHi killed renamable $r2, 0, 14 /* CC::al */, $noreg :: (load (s16) from %ir.data16.i1)
118 ; CHECK: dead renamable $r2, $cpsr = tEOR killed renamable $r2, renamable $r1, 14 /* CC::al */, $noreg
119 ; CHECK: t2Bcc %bb.4, 0 /* CC::eq */, killed $cpsr
120 ; CHECK: bb.3.while.body.a:
121 ; CHECK: successors: %bb.4(0x4207fef8), %bb.1(0x3df80108)
122 ; CHECK: liveins: $r0, $r1
123 ; CHECK: renamable $r0 = tLDRi killed renamable $r0, 0, 14 /* CC::al */, $noreg :: (load (s32) from %ir.next.i2)
124 ; CHECK: tCMPi8 renamable $r0, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
125 ; CHECK: BUNDLE implicit-def dead $itstate, implicit-def dead $r2, implicit-def $cpsr, implicit $r0, implicit killed $cpsr, implicit $r1 {
126 ; CHECK: t2IT 1, 30, implicit-def $itstate
127 ; CHECK: renamable $r2 = tLDRi renamable $r0, 1, 1 /* CC::ne */, $cpsr, implicit internal $itstate :: (load (s32) from %ir.info.i.1)
128 ; CHECK: renamable $r2 = tLDRHi internal killed renamable $r2, 0, 1 /* CC::ne */, $cpsr, implicit internal killed $r2, implicit internal $itstate :: (load (s16) from %ir.data16.i.13)
129 ; CHECK: t2TEQrr internal killed renamable $r2, renamable $r1, 1 /* CC::ne */, killed $cpsr, implicit-def $cpsr, implicit internal killed $itstate
131 ; CHECK: t2Bcc %bb.1, 1 /* CC::ne */, killed $cpsr
133 ; CHECK: liveins: $r0
134 ; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit killed $r0
136 successors: %bb.1(0x80000000)
139 t2B %bb.1, 14, $noreg
142 successors: %bb.1(0x80000000)
145 renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg :: (load (s32) from %ir.next.i.14)
146 tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr
147 BUNDLE implicit-def dead $itstate, implicit killed $cpsr, implicit $r0 {
148 t2IT 0, 8, implicit-def $itstate
149 tBX_RET 0, killed $cpsr, implicit $r0, implicit internal killed $itstate
153 successors: %bb.4(0x04000000), %bb.2(0x7c000000)
156 renamable $r2 = tLDRi renamable $r0, 1, 14, $noreg :: (load (s32) from %ir.info.i)
157 renamable $r2 = tLDRHi killed renamable $r2, 0, 14, $noreg :: (load (s16) from %ir.data16.i1)
158 dead renamable $r2, $cpsr = tEOR killed renamable $r2, renamable $r1, 14, $noreg
159 t2Bcc %bb.4, 0, killed $cpsr
162 successors: %bb.4(0x80000000), %bb.3(0x78200000)
165 renamable $r0 = tLDRi killed renamable $r0, 0, 14, $noreg :: (load (s32) from %ir.next.i2)
166 tCMPi8 renamable $r0, 0, 14, $noreg, implicit-def $cpsr
167 BUNDLE implicit-def dead $itstate, implicit-def dead $r2, implicit-def $cpsr, implicit $r0, implicit killed $cpsr, implicit $r1 {
168 t2IT 1, 30, implicit-def $itstate
169 renamable $r2 = tLDRi renamable $r0, 1, 1, $cpsr, implicit internal $itstate :: (load (s32) from %ir.info.i.1)
170 renamable $r2 = tLDRHi internal killed renamable $r2, 0, 1, $cpsr, implicit internal killed $r2, implicit internal $itstate :: (load (s16) from %ir.data16.i.13)
171 t2TEQrr internal killed renamable $r2, renamable $r1, 1, killed $cpsr, implicit-def $cpsr, implicit internal killed $itstate
173 t2Bcc %bb.3, 1, killed $cpsr
178 tBX_RET 14, $noreg, implicit killed $r0
183 tracksRegLiveness: true
185 - { reg: '$r0', virtual-reg: '' }
186 - { reg: '$r1', virtual-reg: '' }
188 ; CHECK-LABEL: name: op_not_killed
190 ; CHECK: successors: %bb.1(0x80000000)
191 ; CHECK: liveins: $r0, $r1
192 ; CHECK: $r2 = tMOVr $r0, 14 /* CC::al */, $noreg
193 ; CHECK: bb.1.while.begin:
194 ; CHECK: successors: %bb.5(0x04000000), %bb.2(0x7c000000)
195 ; CHECK: liveins: $r1, $r2
196 ; CHECK: renamable $r0 = tLDRi renamable $r2, 1, 14 /* CC::al */, $noreg :: (load (s32) from %ir.info.i)
197 ; CHECK: renamable $r0 = tLDRHi killed renamable $r0, 0, 14 /* CC::al */, $noreg :: (load (s16) from %ir.data16.i1)
198 ; CHECK: t2TEQrr renamable $r0, renamable $r1, 14 /* CC::al */, $noreg, implicit-def $cpsr
199 ; CHECK: t2Bcc %bb.5, 0 /* CC::eq */, killed $cpsr
200 ; CHECK: bb.2.while.body.a:
201 ; CHECK: successors: %bb.5(0x04000000), %bb.3(0x7c000000)
202 ; CHECK: liveins: $r0, $r1, $r2
203 ; CHECK: renamable $r2 = tLDRi killed renamable $r2, 0, 14 /* CC::al */, $noreg :: (load (s32) from %ir.next.i2)
204 ; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
205 ; CHECK: t2Bcc %bb.5, 0 /* CC::eq */, killed $cpsr
206 ; CHECK: bb.3.it.block:
207 ; CHECK: successors: %bb.5(0x04000000), %bb.4(0x7c000000)
208 ; CHECK: liveins: $r1, $r2
209 ; CHECK: renamable $r0 = tLDRi renamable $r2, 1, 14 /* CC::al */, $noreg :: (load (s32) from %ir.info.i.1)
210 ; CHECK: renamable $r0 = tLDRHi killed renamable $r0, 0, 14 /* CC::al */, $noreg :: (load (s16) from %ir.data16.i.13)
211 ; CHECK: t2TEQrr renamable $r0, renamable $r1, 14 /* CC::al */, $noreg, implicit-def $cpsr
212 ; CHECK: t2Bcc %bb.5, 0 /* CC::eq */, killed $cpsr
213 ; CHECK: bb.4.while.body.end:
214 ; CHECK: successors: %bb.5(0x04000000), %bb.1(0x7c000000)
215 ; CHECK: liveins: $r0, $r1, $r2
216 ; CHECK: renamable $r2 = tLDRi killed renamable $r2, 0, 14 /* CC::al */, $noreg :: (load (s32) from %ir.next.i.14)
217 ; CHECK: tCMPi8 renamable $r2, 0, 14 /* CC::al */, $noreg, implicit-def $cpsr
218 ; CHECK: t2Bcc %bb.1, 1 /* CC::ne */, killed $cpsr
220 ; CHECK: liveins: $r0
221 ; CHECK: tBX_RET 14 /* CC::al */, $noreg, implicit $r0
223 successors: %bb.1(0x80000000)
226 $r2 = tMOVr $r0, 14, $noreg
229 successors: %bb.5(0x04000000), %bb.2(0x7c000000)
232 renamable $r0 = t2LDRi12 renamable $r2, 4, 14, $noreg :: (load (s32) from %ir.info.i)
233 renamable $r0 = t2LDRHi12 killed renamable $r0, 0, 14, $noreg :: (load (s16) from %ir.data16.i1)
234 t2TEQrr renamable $r0, renamable $r1, 14, $noreg, implicit-def $cpsr
235 t2Bcc %bb.5, 0, killed $cpsr
238 successors: %bb.5(0x04000000), %bb.3(0x7c000000)
239 liveins: $r0, $r1, $r2
241 renamable $r2 = t2LDRi12 killed renamable $r2, 0, 14, $noreg :: (load (s32) from %ir.next.i2)
242 t2CMPri renamable $r2, 0, 14, $noreg, implicit-def $cpsr
243 t2Bcc %bb.5, 0, killed $cpsr
246 successors: %bb.5(0x04000000), %bb.4(0x7c000000)
249 renamable $r0 = t2LDRi12 renamable $r2, 4, 14, $noreg :: (load (s32) from %ir.info.i.1)
250 renamable $r0 = t2LDRHi12 killed renamable $r0, 0, 14, $noreg :: (load (s16) from %ir.data16.i.13)
251 t2TEQrr renamable $r0, renamable $r1, 14, $noreg, implicit-def $cpsr
252 t2Bcc %bb.5, 0, killed $cpsr
255 successors: %bb.5(0x04000000), %bb.1(0x7c000000)
256 liveins: $r0, $r1, $r2
258 renamable $r2 = t2LDRi12 killed renamable $r2, 0, 14, $noreg :: (load (s32) from %ir.next.i.14)
259 t2CMPri renamable $r2, 0, 14, $noreg, implicit-def $cpsr
260 t2Bcc %bb.1, 1, killed $cpsr
265 tBX_RET 14, $noreg, implicit $r0