1 ; RUN: llc -verify-machineinstrs -o - %s -mtriple=aarch64-linux-gnu | FileCheck %s
2 ; RUN: llc -verify-machineinstrs < %s -mtriple=aarch64-none-linux-gnu -mattr=-fp-armv8 | FileCheck --check-prefix=CHECK-NOFP %s
4 @var_8bit = global i8 0
5 @var_16bit = global i16 0
6 @var_32bit = global i32 0
7 @var_64bit = global i64 0
9 @var_float = global float 0.0
10 @var_double = global double 0.0
12 @varptr = global i8* null
14 define void @ldst_8bit() {
15 ; CHECK-LABEL: ldst_8bit:
17 ; No architectural support for loads to 16-bit or 8-bit since we
18 ; promote i8 during lowering.
19 %addr_8bit = load i8*, i8** @varptr
21 ; match a sign-extending load 8-bit -> 32-bit
22 %addr_sext32 = getelementptr i8, i8* %addr_8bit, i64 -256
23 %val8_sext32 = load volatile i8, i8* %addr_sext32
24 %val32_signed = sext i8 %val8_sext32 to i32
25 store volatile i32 %val32_signed, i32* @var_32bit
26 ; CHECK: ldursb {{w[0-9]+}}, [{{x[0-9]+}}, #-256]
28 ; match a zero-extending load volatile 8-bit -> 32-bit
29 %addr_zext32 = getelementptr i8, i8* %addr_8bit, i64 -12
30 %val8_zext32 = load volatile i8, i8* %addr_zext32
31 %val32_unsigned = zext i8 %val8_zext32 to i32
32 store volatile i32 %val32_unsigned, i32* @var_32bit
33 ; CHECK: ldurb {{w[0-9]+}}, [{{x[0-9]+}}, #-12]
35 ; match an any-extending load volatile 8-bit -> 32-bit
36 %addr_anyext = getelementptr i8, i8* %addr_8bit, i64 -1
37 %val8_anyext = load volatile i8, i8* %addr_anyext
38 %newval8 = add i8 %val8_anyext, 1
39 store volatile i8 %newval8, i8* @var_8bit
40 ; CHECK: ldurb {{w[0-9]+}}, [{{x[0-9]+}}, #-1]
42 ; match a sign-extending load volatile 8-bit -> 64-bit
43 %addr_sext64 = getelementptr i8, i8* %addr_8bit, i64 -5
44 %val8_sext64 = load volatile i8, i8* %addr_sext64
45 %val64_signed = sext i8 %val8_sext64 to i64
46 store volatile i64 %val64_signed, i64* @var_64bit
47 ; CHECK: ldursb {{x[0-9]+}}, [{{x[0-9]+}}, #-5]
49 ; match a zero-extending load volatile 8-bit -> 64-bit.
50 ; This uses the fact that ldrb w0, [x0] will zero out the high 32-bits
51 ; of x0 so it's identical to load volatileing to 32-bits.
52 %addr_zext64 = getelementptr i8, i8* %addr_8bit, i64 -9
53 %val8_zext64 = load volatile i8, i8* %addr_zext64
54 %val64_unsigned = zext i8 %val8_zext64 to i64
55 store volatile i64 %val64_unsigned, i64* @var_64bit
56 ; CHECK: ldurb {{w[0-9]+}}, [{{x[0-9]+}}, #-9]
58 ; truncating store volatile 32-bits to 8-bits
59 %addr_trunc32 = getelementptr i8, i8* %addr_8bit, i64 -256
60 %val32 = load volatile i32, i32* @var_32bit
61 %val8_trunc32 = trunc i32 %val32 to i8
62 store volatile i8 %val8_trunc32, i8* %addr_trunc32
63 ; CHECK: sturb {{w[0-9]+}}, [{{x[0-9]+}}, #-256]
65 ; truncating store volatile 64-bits to 8-bits
66 %addr_trunc64 = getelementptr i8, i8* %addr_8bit, i64 -1
67 %val64 = load volatile i64, i64* @var_64bit
68 %val8_trunc64 = trunc i64 %val64 to i8
69 store volatile i8 %val8_trunc64, i8* %addr_trunc64
70 ; CHECK: sturb {{w[0-9]+}}, [{{x[0-9]+}}, #-1]
75 define void @ldst_16bit() {
76 ; CHECK-LABEL: ldst_16bit:
78 ; No architectural support for loads to 16-bit or 16-bit since we
79 ; promote i16 during lowering.
80 %addr_8bit = load i8*, i8** @varptr
82 ; match a sign-extending load 16-bit -> 32-bit
83 %addr8_sext32 = getelementptr i8, i8* %addr_8bit, i64 -256
84 %addr_sext32 = bitcast i8* %addr8_sext32 to i16*
85 %val16_sext32 = load volatile i16, i16* %addr_sext32
86 %val32_signed = sext i16 %val16_sext32 to i32
87 store volatile i32 %val32_signed, i32* @var_32bit
88 ; CHECK: ldursh {{w[0-9]+}}, [{{x[0-9]+}}, #-256]
90 ; match a zero-extending load volatile 16-bit -> 32-bit. With offset that would be unaligned.
91 %addr8_zext32 = getelementptr i8, i8* %addr_8bit, i64 15
92 %addr_zext32 = bitcast i8* %addr8_zext32 to i16*
93 %val16_zext32 = load volatile i16, i16* %addr_zext32
94 %val32_unsigned = zext i16 %val16_zext32 to i32
95 store volatile i32 %val32_unsigned, i32* @var_32bit
96 ; CHECK: ldurh {{w[0-9]+}}, [{{x[0-9]+}}, #15]
98 ; match an any-extending load volatile 16-bit -> 32-bit
99 %addr8_anyext = getelementptr i8, i8* %addr_8bit, i64 -1
100 %addr_anyext = bitcast i8* %addr8_anyext to i16*
101 %val16_anyext = load volatile i16, i16* %addr_anyext
102 %newval16 = add i16 %val16_anyext, 1
103 store volatile i16 %newval16, i16* @var_16bit
104 ; CHECK: ldurh {{w[0-9]+}}, [{{x[0-9]+}}, #-1]
106 ; match a sign-extending load volatile 16-bit -> 64-bit
107 %addr8_sext64 = getelementptr i8, i8* %addr_8bit, i64 -5
108 %addr_sext64 = bitcast i8* %addr8_sext64 to i16*
109 %val16_sext64 = load volatile i16, i16* %addr_sext64
110 %val64_signed = sext i16 %val16_sext64 to i64
111 store volatile i64 %val64_signed, i64* @var_64bit
112 ; CHECK: ldursh {{x[0-9]+}}, [{{x[0-9]+}}, #-5]
114 ; match a zero-extending load volatile 16-bit -> 64-bit.
115 ; This uses the fact that ldrb w0, [x0] will zero out the high 32-bits
116 ; of x0 so it's identical to load volatileing to 32-bits.
117 %addr8_zext64 = getelementptr i8, i8* %addr_8bit, i64 9
118 %addr_zext64 = bitcast i8* %addr8_zext64 to i16*
119 %val16_zext64 = load volatile i16, i16* %addr_zext64
120 %val64_unsigned = zext i16 %val16_zext64 to i64
121 store volatile i64 %val64_unsigned, i64* @var_64bit
122 ; CHECK: ldurh {{w[0-9]+}}, [{{x[0-9]+}}, #9]
124 ; truncating store volatile 32-bits to 16-bits
125 %addr8_trunc32 = getelementptr i8, i8* %addr_8bit, i64 -256
126 %addr_trunc32 = bitcast i8* %addr8_trunc32 to i16*
127 %val32 = load volatile i32, i32* @var_32bit
128 %val16_trunc32 = trunc i32 %val32 to i16
129 store volatile i16 %val16_trunc32, i16* %addr_trunc32
130 ; CHECK: sturh {{w[0-9]+}}, [{{x[0-9]+}}, #-256]
132 ; truncating store volatile 64-bits to 16-bits
133 %addr8_trunc64 = getelementptr i8, i8* %addr_8bit, i64 -1
134 %addr_trunc64 = bitcast i8* %addr8_trunc64 to i16*
135 %val64 = load volatile i64, i64* @var_64bit
136 %val16_trunc64 = trunc i64 %val64 to i16
137 store volatile i16 %val16_trunc64, i16* %addr_trunc64
138 ; CHECK: sturh {{w[0-9]+}}, [{{x[0-9]+}}, #-1]
143 define void @ldst_32bit() {
144 ; CHECK-LABEL: ldst_32bit:
146 %addr_8bit = load i8*, i8** @varptr
148 ; Straight 32-bit load/store
149 %addr32_8_noext = getelementptr i8, i8* %addr_8bit, i64 1
150 %addr32_noext = bitcast i8* %addr32_8_noext to i32*
151 %val32_noext = load volatile i32, i32* %addr32_noext
152 store volatile i32 %val32_noext, i32* %addr32_noext
153 ; CHECK: ldur {{w[0-9]+}}, [{{x[0-9]+}}, #1]
154 ; CHECK: stur {{w[0-9]+}}, [{{x[0-9]+}}, #1]
156 ; Zero-extension to 64-bits
157 %addr32_8_zext = getelementptr i8, i8* %addr_8bit, i64 -256
158 %addr32_zext = bitcast i8* %addr32_8_zext to i32*
159 %val32_zext = load volatile i32, i32* %addr32_zext
160 %val64_unsigned = zext i32 %val32_zext to i64
161 store volatile i64 %val64_unsigned, i64* @var_64bit
162 ; CHECK: ldur {{w[0-9]+}}, [{{x[0-9]+}}, #-256]
163 ; CHECK: str {{x[0-9]+}}, [{{x[0-9]+}}, {{#?}}:lo12:var_64bit]
165 ; Sign-extension to 64-bits
166 %addr32_8_sext = getelementptr i8, i8* %addr_8bit, i64 -12
167 %addr32_sext = bitcast i8* %addr32_8_sext to i32*
168 %val32_sext = load volatile i32, i32* %addr32_sext
169 %val64_signed = sext i32 %val32_sext to i64
170 store volatile i64 %val64_signed, i64* @var_64bit
171 ; CHECK: ldursw {{x[0-9]+}}, [{{x[0-9]+}}, #-12]
172 ; CHECK: str {{x[0-9]+}}, [{{x[0-9]+}}, {{#?}}:lo12:var_64bit]
174 ; Truncation from 64-bits
175 %addr64_8_trunc = getelementptr i8, i8* %addr_8bit, i64 255
176 %addr64_trunc = bitcast i8* %addr64_8_trunc to i64*
177 %addr32_8_trunc = getelementptr i8, i8* %addr_8bit, i64 -20
178 %addr32_trunc = bitcast i8* %addr32_8_trunc to i32*
180 %val64_trunc = load volatile i64, i64* %addr64_trunc
181 %val32_trunc = trunc i64 %val64_trunc to i32
182 store volatile i32 %val32_trunc, i32* %addr32_trunc
183 ; CHECK: ldur {{x[0-9]+}}, [{{x[0-9]+}}, #255]
184 ; CHECK: stur {{w[0-9]+}}, [{{x[0-9]+}}, #-20]
189 define void @ldst_float() {
190 ; CHECK-LABEL: ldst_float:
192 %addr_8bit = load i8*, i8** @varptr
193 %addrfp_8 = getelementptr i8, i8* %addr_8bit, i64 -5
194 %addrfp = bitcast i8* %addrfp_8 to float*
196 %valfp = load volatile float, float* %addrfp
197 ; CHECK: ldur {{s[0-9]+}}, [{{x[0-9]+}}, #-5]
198 ; CHECK-NOFP-NOT: ldur {{s[0-9]+}},
200 store volatile float %valfp, float* %addrfp
201 ; CHECK: stur {{s[0-9]+}}, [{{x[0-9]+}}, #-5]
202 ; CHECK-NOFP-NOT: stur {{s[0-9]+}},
207 define void @ldst_double() {
208 ; CHECK-LABEL: ldst_double:
210 %addr_8bit = load i8*, i8** @varptr
211 %addrfp_8 = getelementptr i8, i8* %addr_8bit, i64 4
212 %addrfp = bitcast i8* %addrfp_8 to double*
214 %valfp = load volatile double, double* %addrfp
215 ; CHECK: ldur {{d[0-9]+}}, [{{x[0-9]+}}, #4]
216 ; CHECK-NOFP-NOT: ldur {{d[0-9]+}},
218 store volatile double %valfp, double* %addrfp
219 ; CHECK: stur {{d[0-9]+}}, [{{x[0-9]+}}, #4]
220 ; CHECK-NOFP-NOT: stur {{d[0-9]+}},