source: icGREP/icgrep-devel/llvm-3.8.0.src/test/CodeGen/ARM/struct_byval.ll @ 5027

Last change on this file since 5027 was 5027, checked in by cameron, 3 years ago

Upgrade to llvm 3.8

File size: 3.8 KB
Line 
1; RUN: llc < %s -mtriple=armv7-apple-ios6.0 | FileCheck %s
2; RUN: llc < %s -mtriple=thumbv7-apple-ios6.0 | FileCheck %s -check-prefix=THUMB
3; RUN: llc < %s -mtriple=armv7-unknown-nacl-gnueabi | FileCheck %s -check-prefix=NACL
4; RUN: llc < %s -mtriple=armv5-none-linux-gnueabi | FileCheck %s -check-prefix=NOMOVT
5
6; NOMOVT-NOT: movt
7
8; rdar://9877866
9%struct.SmallStruct = type { i32, [8 x i32], [37 x i8] }
10%struct.LargeStruct = type { i32, [1001 x i8], [300 x i32] }
11
12define i32 @f() nounwind ssp {
13entry:
14; CHECK-LABEL: f:
15; CHECK: ldr
16; CHECK: str
17; CHECK-NOT:bne
18; THUMB-LABEL: f:
19; THUMB: ldr
20; THUMB: str
21; THUMB-NOT:bne
22  %st = alloca %struct.SmallStruct, align 4
23  %call = call i32 @e1(%struct.SmallStruct* byval %st)
24  ret i32 0
25}
26
27; Generate a loop for large struct byval
28define i32 @g() nounwind ssp {
29entry:
30; CHECK-LABEL: g:
31; CHECK: ldr
32; CHECK: sub
33; CHECK: str
34; CHECK: bne
35; THUMB-LABEL: g:
36; THUMB: ldr
37; THUMB: sub
38; THUMB: str
39; THUMB: bne
40; NACL-LABEL: g:
41; Ensure that use movw instead of constpool for the loop trip count. But don't
42; match the __stack_chk_guard movw
43; NACL: movw r{{[1-9]}}, #
44; NACL: ldr
45; NACL: sub
46; NACL: str
47; NACL: bne
48  %st = alloca %struct.LargeStruct, align 4
49  %call = call i32 @e2(%struct.LargeStruct* byval %st)
50  ret i32 0
51}
52
53; Generate a loop using NEON instructions
54define i32 @h() nounwind ssp {
55entry:
56; CHECK-LABEL: h:
57; CHECK: vld1
58; CHECK: sub
59; CHECK: vst1
60; CHECK: bne
61; THUMB-LABEL: h:
62; THUMB: vld1
63; THUMB: sub
64; THUMB: vst1
65; THUMB: bne
66; NACL: movw r{{[1-9]}}, #
67; NACL: vld1
68; NACL: sub
69; NACL: vst1
70; NACL: bne
71  %st = alloca %struct.LargeStruct, align 16
72  %call = call i32 @e3(%struct.LargeStruct* byval align 16 %st)
73  ret i32 0
74}
75
76declare i32 @e1(%struct.SmallStruct* nocapture byval %in) nounwind
77declare i32 @e2(%struct.LargeStruct* nocapture byval %in) nounwind
78declare i32 @e3(%struct.LargeStruct* nocapture byval align 16 %in) nounwind
79
80; rdar://12442472
81; We can't do tail call since address of s is passed to the callee and part of
82; s is in caller's local frame.
83define void @f3(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
84; CHECK-LABEL: f3
85; CHECK: bl _consumestruct
86; THUMB-LABEL: f3
87; THUMB: blx _consumestruct
88entry:
89  %0 = bitcast %struct.SmallStruct* %s to i8*
90  tail call void @consumestruct(i8* %0, i32 80) optsize
91  ret void
92}
93
94define void @f4(%struct.SmallStruct* nocapture byval %s) nounwind optsize {
95; CHECK-LABEL: f4
96; CHECK: bl _consumestruct
97; THUMB-LABEL: f4
98; THUMB: blx _consumestruct
99entry:
100  %addr = getelementptr inbounds %struct.SmallStruct, %struct.SmallStruct* %s, i32 0, i32 0
101  %0 = bitcast i32* %addr to i8*
102  tail call void @consumestruct(i8* %0, i32 80) optsize
103  ret void
104}
105
106; We can do tail call here since s is in the incoming argument area.
107define void @f5(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
108; CHECK-LABEL: f5
109; CHECK: b _consumestruct
110; THUMB-LABEL: f5
111; THUMB: b.w _consumestruct
112entry:
113  %0 = bitcast %struct.SmallStruct* %s to i8*
114  tail call void @consumestruct(i8* %0, i32 80) optsize
115  ret void
116}
117
118define void @f6(i32 %a, i32 %b, i32 %c, i32 %d, %struct.SmallStruct* nocapture byval %s) nounwind optsize {
119; CHECK-LABEL: f6
120; CHECK: b _consumestruct
121; THUMB-LABEL: f6
122; THUMB: b.w _consumestruct
123entry:
124  %addr = getelementptr inbounds %struct.SmallStruct, %struct.SmallStruct* %s, i32 0, i32 0
125  %0 = bitcast i32* %addr to i8*
126  tail call void @consumestruct(i8* %0, i32 80) optsize
127  ret void
128}
129
130declare void @consumestruct(i8* nocapture %structp, i32 %structsize) nounwind
131
132; PR17309
133%struct.I.8 = type { [10 x i32], [3 x i8] }
134
135declare void @use_I(%struct.I.8* byval)
136define void @test_I_16() {
137; CHECK-LABEL: test_I_16
138; CHECK: ldrb
139; CHECK: strb
140; THUMB-LABEL: test_I_16
141; THUMB: ldrb
142; THUMB: strb
143entry:
144  call void @use_I(%struct.I.8* byval align 16 undef)
145  ret void
146}
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