File: openmp-offload-gpu.c

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8%2Bdeb10u2
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 734,616 kB
  • sloc: cpp: 3,776,926; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; javascript: 518; ruby: 156
file content (218 lines) | stat: -rw-r--r-- 12,667 bytes parent folder | download | duplicates (4)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
///
/// Perform several driver tests for OpenMP offloading
///

// REQUIRES: clang-driver
// REQUIRES: x86-registered-target
// REQUIRES: powerpc-registered-target
// REQUIRES: nvptx-registered-target

/// ###########################################################################

/// Check -Xopenmp-target uses one of the archs provided when several archs are used.
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:          -Xopenmp-target -march=sm_35 -Xopenmp-target -march=sm_60 %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-FOPENMP-TARGET-ARCHS %s

// CHK-FOPENMP-TARGET-ARCHS: ptxas{{.*}}" "--gpu-name" "sm_60"
// CHK-FOPENMP-TARGET-ARCHS: nvlink{{.*}}" "-arch" "sm_60"

/// ###########################################################################

/// Check -Xopenmp-target -march=sm_35 works as expected when two triples are present.
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp \
// RUN:          -fopenmp-targets=powerpc64le-ibm-linux-gnu,nvptx64-nvidia-cuda \
// RUN:          -Xopenmp-target=nvptx64-nvidia-cuda -march=sm_35 %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-FOPENMP-TARGET-COMPILATION %s

// CHK-FOPENMP-TARGET-COMPILATION: ptxas{{.*}}" "--gpu-name" "sm_35"
// CHK-FOPENMP-TARGET-COMPILATION: nvlink{{.*}}" "-arch" "sm_35"

/// ###########################################################################

/// Check cubin file generation and usage by nvlink
// RUN:   %clang -### -no-canonical-prefixes -target powerpc64le-unknown-linux-gnu -fopenmp=libomp \
// RUN:          -fopenmp-targets=nvptx64-nvidia-cuda -save-temps %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-CUBIN-NVLINK %s
/// Check cubin file generation and usage by nvlink when toolchain has BindArchAction
// RUN:   %clang -### -no-canonical-prefixes -target x86_64-apple-darwin17.0.0 -fopenmp=libomp \
// RUN:          -fopenmp-targets=nvptx64-nvidia-cuda %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-CUBIN-NVLINK %s

// CHK-CUBIN-NVLINK: clang{{.*}}" "-o" "[[PTX:.*\.s]]"
// CHK-CUBIN-NVLINK-NEXT: ptxas{{.*}}" "--output-file" "[[CUBIN:.*\.cubin]]" {{.*}}"[[PTX]]"
// CHK-CUBIN-NVLINK-NEXT: nvlink{{.*}}" {{.*}}"[[CUBIN]]"

/// ###########################################################################

/// Check unbundlink of assembly file, cubin file generation and usage by nvlink
// RUN:   touch %t.s
// RUN:   %clang -### -target powerpc64le-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:          -no-canonical-prefixes -save-temps %t.s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-UNBUNDLING-PTXAS-CUBIN-NVLINK %s

/// Use DAG to ensure that assembly file has been unbundled.
// CHK-UNBUNDLING-PTXAS-CUBIN-NVLINK-DAG: ptxas{{.*}}" "--output-file" "[[CUBIN:.*\.cubin]]" {{.*}}"[[PTX:.*\.s]]"
// CHK-UNBUNDLING-PTXAS-CUBIN-NVLINK-DAG: clang-offload-bundler{{.*}}" "-type=s" {{.*}}"-outputs={{.*}}[[PTX]]
// CHK-UNBUNDLING-PTXAS-CUBIN-NVLINK-DAG-SAME: "-unbundle"
// CHK-UNBUNDLING-PTXAS-CUBIN-NVLINK: nvlink{{.*}}" {{.*}}"[[CUBIN]]"

/// ###########################################################################

/// Check cubin file generation and bundling
// RUN:   %clang -### -target powerpc64le-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:          -no-canonical-prefixes -save-temps %s -c 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-PTXAS-CUBIN-BUNDLING %s

// CHK-PTXAS-CUBIN-BUNDLING: clang{{.*}}" "-o" "[[PTX:.*\.s]]"
// CHK-PTXAS-CUBIN-BUNDLING-NEXT: ptxas{{.*}}" "--output-file" "[[CUBIN:.*\.cubin]]" {{.*}}"[[PTX]]"
// CHK-PTXAS-CUBIN-BUNDLING: clang-offload-bundler{{.*}}" "-type=o" {{.*}}"-inputs={{.*}}[[CUBIN]]

/// ###########################################################################

/// Check cubin file unbundling and usage by nvlink
// RUN:   touch %t.o
// RUN:   %clang -### -target powerpc64le-unknown-linux-gnu -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:          -no-canonical-prefixes -save-temps %t.o 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-CUBIN-UNBUNDLING-NVLINK %s

/// Use DAG to ensure that cubin file has been unbundled.
// CHK-CUBIN-UNBUNDLING-NVLINK-DAG: nvlink{{.*}}" {{.*}}"[[CUBIN:.*\.cubin]]"
// CHK-CUBIN-UNBUNDLING-NVLINK-DAG: clang-offload-bundler{{.*}}" "-type=o" {{.*}}"-outputs={{.*}}[[CUBIN]]
// CHK-CUBIN-UNBUNDLING-NVLINK-DAG-SAME: "-unbundle"

/// ###########################################################################

/// Check cubin file generation and usage by nvlink
// RUN:   touch %t1.o
// RUN:   touch %t2.o
// RUN:   %clang -### -no-canonical-prefixes -target powerpc64le-unknown-linux-gnu -fopenmp=libomp \
// RUN:          -fopenmp-targets=nvptx64-nvidia-cuda %t1.o %t2.o 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-TWOCUBIN %s
/// Check cubin file generation and usage by nvlink when toolchain has BindArchAction
// RUN:   %clang -### -no-canonical-prefixes -target x86_64-apple-darwin17.0.0 -fopenmp=libomp \
// RUN:          -fopenmp-targets=nvptx64-nvidia-cuda %t1.o %t2.o 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-TWOCUBIN %s

// CHK-TWOCUBIN: nvlink{{.*}}openmp-offload-{{.*}}.cubin" "{{.*}}openmp-offload-{{.*}}.cubin"

/// ###########################################################################

/// Check PTXAS is passed -c flag when offloading to an NVIDIA device using OpenMP.
// RUN:   %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-PTXAS-DEFAULT %s

// CHK-PTXAS-DEFAULT: ptxas{{.*}}" "-c"

/// ###########################################################################

/// PTXAS is passed -c flag by default when offloading to an NVIDIA device using OpenMP - disable it.
// RUN:   %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -fnoopenmp-relocatable-target \
// RUN:          -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-PTXAS-NORELO %s

// CHK-PTXAS-NORELO-NOT: ptxas{{.*}}" "-c"

/// ###########################################################################

/// PTXAS is passed -c flag by default when offloading to an NVIDIA device using OpenMP
/// Check that the flag is passed when -fopenmp-relocatable-target is used.
// RUN:   %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -fopenmp-relocatable-target \
// RUN:          -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-PTXAS-RELO %s

// CHK-PTXAS-RELO: ptxas{{.*}}" "-c"

/// ###########################################################################

/// Check that error is not thrown by toolchain when no cuda lib flag is used.
/// Check that the flag is passed when -fopenmp-relocatable-target is used.
// RUN:   %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 \
// RUN:   -nocudalib -fopenmp-relocatable-target -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-FLAG-NOLIBDEVICE %s

// CHK-FLAG-NOLIBDEVICE-NOT: error:{{.*}}sm_60

/// ###########################################################################

/// Check that error is not thrown by toolchain when no cuda lib device is found when using -S.
/// Check that the flag is passed when -fopenmp-relocatable-target is used.
// RUN:   %clang -### -S -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 \
// RUN:   -fopenmp-relocatable-target -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-NOLIBDEVICE %s

// CHK-NOLIBDEVICE-NOT: error:{{.*}}sm_60

/// ###########################################################################

/// Check that the runtime bitcode library is part of the compile line. Create a bogus
/// bitcode library and add it to the LIBRARY_PATH.
// RUN:   env LIBRARY_PATH=%S/Inputs/libomptarget %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:   -Xopenmp-target -march=sm_20 --cuda-path=%S/Inputs/CUDA_80/usr/local/cuda \
// RUN:   -fopenmp-relocatable-target -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-BCLIB %s

// CHK-BCLIB: clang{{.*}}-triple{{.*}}nvptx64-nvidia-cuda{{.*}}-mlink-cuda-bitcode{{.*}}libomptarget-nvptx-sm_20.bc
// CHK-BCLIB-NOT: {{error:|warning:}}

/// ###########################################################################

/// Check that the warning is thrown when the libomptarget bitcode library is not found.
/// Libomptarget requires sm_35 or newer so an sm_20 bitcode library should never exist.
// RUN:   %clang -### -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda \
// RUN:   -Xopenmp-target -march=sm_20 --cuda-path=%S/Inputs/CUDA_80/usr/local/cuda \
// RUN:   -fopenmp-relocatable-target -save-temps -no-canonical-prefixes %s 2>&1 \
// RUN:   | FileCheck -check-prefix=CHK-BCLIB-WARN %s

// CHK-BCLIB-WARN: No library 'libomptarget-nvptx-sm_20.bc' found in the default clang lib directory or in LIBRARY_PATH. Expect degraded performance due to no inlining of runtime functions on target devices.

/// Check that debug info is emitted in dwarf-2
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O0 --no-cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 --no-cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g0 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb0 -O3 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -gline-tables-only 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG -check-prefix=LINE_TABLE %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb1 -O2 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=NO_DEBUG -check-prefix=LINE_TABLE %s

// LINE_TABLE-NOT: warning: debug
// NO_DEBUG-NOT: warning: debug
// NO_DEBUG: ptxas
// LINE_TABLE: "-lineinfo"
// NO_DEBUG-NOT: "-g"
// NO_DEBUG: nvlink
// NO_DEBUG-NOT: "-g"

// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O0 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g -O3 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g2 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb2 -O0 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -g3 -O3 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s
// RUN:   %clang -### -no-canonical-prefixes -fopenmp=libomp -fopenmp-targets=nvptx64-nvidia-cuda -Xopenmp-target -march=sm_60 %s -ggdb3 -O2 --cuda-noopt-device-debug 2>&1 \
// RUN:   | FileCheck -check-prefix=HAS_DEBUG %s

// HAS_DEBUG-NOT: warning: debug
// HAS_DEBUG: "-triple" "nvptx64-nvidia-cuda"
// HAS_DEBUG-SAME: "-dwarf-version=2"
// HAS_DEBUG-SAME: "-fopenmp-is-device"
// HAS_DEBUG: ptxas
// HAS_DEBUG-SAME: "-g"
// HAS_DEBUG-SAME: "--dont-merge-basicblocks"
// HAS_DEBUG-SAME: "--return-at-end"
// HAS_DEBUG: nvlink
// HAS_DEBUG-SAME: "-g"