[compiler-rt] r336678 - Reapply "Make __gcov_flush flush counters for all shared libraries"
via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 10 16:38:20 PDT 2018
Sounds good. Thanks for looking at this!
Matthew
From: Marco Castelluccio [mailto:mcastelluccio at mozilla.com]
Sent: Tuesday, July 10, 2018 4:37 PM
To: Voss, Matthew; eugeni.stepanov at gmail.com
Cc: llvm-commits at lists.llvm.org; uweigand at de.ibm.com
Subject: Re: [compiler-rt] r336678 - Reapply "Make __gcov_flush flush counters for all shared libraries"
Actually, I think r336693 is what caused the failure, it's not a spurious failure.
https://reviews.llvm.org/D49161 should fix it.
Thanks,
Marco.
Il 10/07/2018 23:30, Matthew.Voss at sony.com<mailto:Matthew.Voss at sony.com> ha scritto:
Hmm… We build the PS4 target on Windows. I’m assuming that’s sanitizer-x86_64-windows?
Thanks,
Matthew
From: Marco Castelluccio [mailto:mcastelluccio at mozilla.com]
Sent: Tuesday, July 10, 2018 2:20 PM
To: Voss, Matthew; eugeni.stepanov at gmail.com<mailto:eugeni.stepanov at gmail.com>
Cc: llvm-commits at lists.llvm.org<mailto:llvm-commits at lists.llvm.org>
Subject: Re: [compiler-rt] r336678 - Reapply "Make __gcov_flush flush counters for all shared libraries"
I'm going to mark the test as failing on sanitizer-x86_64-linux for now.
Matthew, is it the same target failing for you?
Thanks,
Marco.
Il 10/07/2018 23:10, Matthew.Voss at sony.com<mailto:Matthew.Voss at sony.com> ha scritto:
Hi Marco,
This change is also breaking our internal bots. Could you take a look at this?
Thanks,
Matthew
From: llvm-commits [mailto:llvm-commits-bounces at lists.llvm.org] On Behalf Of Evgenii Stepanov via llvm-commits
Sent: Tuesday, July 10, 2018 11:23 AM
To: Marco Castelluccio
Cc: LLVM Commits
Subject: Re: [compiler-rt] r336678 - Reapply "Make __gcov_flush flush counters for all shared libraries"
Hi,
it looks like instrprof-shared-gcov-flush.test needs more XFAILs. See this x86/x86_64 failure:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/13413/steps/test%20standalone%20compiler-rt/logs/stdio
On Tue, Jul 10, 2018 at 7:12 AM, Marco Castelluccio via llvm-commits <llvm-commits at lists.llvm.org<mailto:llvm-commits at lists.llvm.org>> wrote:
Author: marco
Date: Tue Jul 10 07:12:03 2018
New Revision: 336678
URL: http://llvm.org/viewvc/llvm-project?rev=336678&view=rev
Log:
Reapply "Make __gcov_flush flush counters for all shared libraries"
This reapplies r336365, after marking tests as failing on various
configurations.
Added:
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func2.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-func3.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_called-twice.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-lib_in-loop.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush.c
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_no-writeout.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-after.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before-after.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main-gcov-flush_shared-call-before.c.gcov
compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov
- copied unchanged from r336473, compiler-rt/trunk/test/profile/Inputs/instrprof-shared-main.c.gcov
compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test
- copied, changed from r336473, compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test
compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test
- copied, changed from r336473, compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test
Modified:
compiler-rt/trunk/lib/profile/GCDAProfiling.c
compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c
compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test
Modified: compiler-rt/trunk/lib/profile/GCDAProfiling.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/lib/profile/GCDAProfiling.c?rev=336678&r1=336677&r2=336678&view=diff
==============================================================================
--- compiler-rt/trunk/lib/profile/GCDAProfiling.c (original)
+++ compiler-rt/trunk/lib/profile/GCDAProfiling.c Tue Jul 10 07:12:03 2018
@@ -86,31 +86,76 @@ static uint64_t file_size = 0;
static int new_file = 0;
static int fd = -1;
-/*
- * A list of functions to write out the data.
- */
-typedef void (*writeout_fn)();
+typedef void (*fn_ptr)();
-struct writeout_fn_node {
- writeout_fn fn;
- struct writeout_fn_node *next;
+typedef void* dynamic_object_id;
+// The address of this variable identifies a given dynamic object.
+static dynamic_object_id current_id;
+#define CURRENT_ID (¤t_id)
+
+struct fn_node {
+ dynamic_object_id id;
+ fn_ptr fn;
+ struct fn_node* next;
};
-static struct writeout_fn_node *writeout_fn_head = NULL;
-static struct writeout_fn_node *writeout_fn_tail = NULL;
+struct fn_list {
+ struct fn_node *head, *tail;
+};
/*
- * A list of flush functions that our __gcov_flush() function should call.
+ * A list of functions to write out the data, shared between all dynamic objects.
*/
-typedef void (*flush_fn)();
+struct fn_list writeout_fn_list;
-struct flush_fn_node {
- flush_fn fn;
- struct flush_fn_node *next;
-};
+/*
+ * A list of flush functions that our __gcov_flush() function should call, shared between all dynamic objects.
+ */
+struct fn_list flush_fn_list;
+
+static void fn_list_insert(struct fn_list* list, fn_ptr fn) {
+ struct fn_node* new_node = malloc(sizeof(struct fn_node));
+ new_node->fn = fn;
+ new_node->next = NULL;
+ new_node->id = CURRENT_ID;
+
+ if (!list->head) {
+ list->head = list->tail = new_node;
+ } else {
+ list->tail->next = new_node;
+ list->tail = new_node;
+ }
+}
+
+static void fn_list_remove(struct fn_list* list) {
+ struct fn_node* curr = list->head;
+ struct fn_node* prev = NULL;
+ struct fn_node* next = NULL;
+
+ while (curr) {
+ next = curr->next;
+
+ if (curr->id == CURRENT_ID) {
+ if (curr == list->head) {
+ list->head = next;
+ }
+
+ if (curr == list->tail) {
+ list->tail = prev;
+ }
+
+ if (prev) {
+ prev->next = next;
+ }
+
+ free(curr);
+ } else {
+ prev = curr;
+ }
-static struct flush_fn_node *flush_fn_head = NULL;
-static struct flush_fn_node *flush_fn_tail = NULL;
+ curr = next;
+ }
+}
static void resize_write_buffer(uint64_t size) {
if (!new_file) return;
@@ -403,6 +448,7 @@ void llvm_gcda_summary_info() {
const uint32_t obj_summary_len = 9; /* Length for gcov compatibility. */
uint32_t i;
uint32_t runs = 1;
+ static uint32_t run_counted = 0; // We only want to increase the run count once.
uint32_t val = 0;
uint64_t save_cur_pos = cur_pos;
@@ -429,7 +475,9 @@ void llvm_gcda_summary_info() {
read_32bit_value(); /* checksum, unused */
read_32bit_value(); /* num, unused */
- runs += read_32bit_value(); /* Add previous run count to new counter. */
+ uint32_t prev_runs = read_32bit_value();
+ /* Add previous run count to new counter, if not already counted before. */
+ runs = run_counted ? prev_runs : prev_runs + 1;
}
cur_pos = save_cur_pos;
@@ -447,6 +495,8 @@ void llvm_gcda_summary_info() {
write_bytes("\0\0\0\xa3", 4); /* tag indicates 1 program */
write_32bit_value(0); /* 0 length */
+ run_counted = 1;
+
#ifdef DEBUG_GCDAPROFILING
fprintf(stderr, "llvmgcda: %u runs\n", runs);
#endif
@@ -479,61 +529,34 @@ void llvm_gcda_end_file() {
}
COMPILER_RT_VISIBILITY
-void llvm_register_writeout_function(writeout_fn fn) {
- struct writeout_fn_node *new_node = malloc(sizeof(struct writeout_fn_node));
- new_node->fn = fn;
- new_node->next = NULL;
-
- if (!writeout_fn_head) {
- writeout_fn_head = writeout_fn_tail = new_node;
- } else {
- writeout_fn_tail->next = new_node;
- writeout_fn_tail = new_node;
- }
+void llvm_register_writeout_function(fn_ptr fn) {
+ fn_list_insert(&writeout_fn_list, fn);
}
COMPILER_RT_VISIBILITY
void llvm_writeout_files(void) {
- struct writeout_fn_node *curr = writeout_fn_head;
+ struct fn_node *curr = writeout_fn_list.head;
while (curr) {
- curr->fn();
+ if (curr->id == CURRENT_ID) {
+ curr->fn();
+ }
curr = curr->next;
}
}
COMPILER_RT_VISIBILITY
void llvm_delete_writeout_function_list(void) {
- while (writeout_fn_head) {
- struct writeout_fn_node *node = writeout_fn_head;
- writeout_fn_head = writeout_fn_head->next;
- free(node);
- }
-
- writeout_fn_head = writeout_fn_tail = NULL;
+ fn_list_remove(&writeout_fn_list);
}
COMPILER_RT_VISIBILITY
-void llvm_register_flush_function(flush_fn fn) {
- struct flush_fn_node *new_node = malloc(sizeof(struct flush_fn_node));
- new_node->fn = fn;
- new_node->next = NULL;
-
- if (!flush_fn_head) {
- flush_fn_head = flush_fn_tail = new_node;
- } else {
- flush_fn_tail->next = new_node;
- flush_fn_tail = new_node;
- }
+void llvm_register_flush_function(fn_ptr fn) {
+ fn_list_insert(&flush_fn_list, fn);
}
-// __gcov_flush is hidden. When called in a .so file,
-// it dumps profile data of the calling .so file.
-// If a main program needs to dump profile data of each linked
-// .so files, it should use dlsym to find and call llvm_gcov_flush.
-COMPILER_RT_VISIBILITY
void __gcov_flush() {
- struct flush_fn_node *curr = flush_fn_head;
+ struct fn_node* curr = flush_fn_list.head;
while (curr) {
curr->fn();
@@ -541,25 +564,13 @@ void __gcov_flush() {
}
}
-// llvm_gcov_flush is not hidden for a program to use dlsym to
-// find and call for any linked .so file.
-void llvm_gcov_flush() {
- __gcov_flush();
-}
-
COMPILER_RT_VISIBILITY
void llvm_delete_flush_function_list(void) {
- while (flush_fn_head) {
- struct flush_fn_node *node = flush_fn_head;
- flush_fn_head = flush_fn_head->next;
- free(node);
- }
-
- flush_fn_head = flush_fn_tail = NULL;
+ fn_list_remove(&flush_fn_list);
}
COMPILER_RT_VISIBILITY
-void llvm_gcov_init(writeout_fn wfn, flush_fn ffn) {
+void llvm_gcov_init(fn_ptr wfn, fn_ptr ffn) {
static int atexit_ran = 0;
if (wfn)
Modified: compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c?rev=336678&r1=336677&r2=336678&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c (original)
+++ compiler-rt/trunk/test/profile/Inputs/instrprof-dlopen-dlclose-main.c Tue Jul 10 07:12:03 2018
@@ -10,6 +10,12 @@ int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
+ void (*func)(void) = (void (*)(void))dlsym(f1_handle, "func");
+ if (func == NULL) {
+ fprintf(stderr, "unable to lookup symbol 'func': %s\n", dlerror());
+ return EXIT_FAILURE;
+ }
+
dlerror();
void *f2_handle = dlopen("func2.shared", RTLD_LAZY | RTLD_GLOBAL);
if (f2_handle == NULL) {
@@ -17,31 +23,44 @@ int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
- dlerror();
- void (*gcov_flush)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
- if (gcov_flush != NULL || dlerror() == NULL) {
- fprintf(stderr, "__gcov_flush should not be visible in func.shared'\n");
+ void (*func2)(void) = (void (*)(void))dlsym(f2_handle, "func2");
+ if (func2 == NULL) {
+ fprintf(stderr, "unable to lookup symbol 'func2': %s\n", dlerror());
+ return EXIT_FAILURE;
+ }
+ func2();
+
+#ifdef USE_LIB3
+ void *f3_handle = dlopen("func3.shared", RTLD_LAZY | RTLD_GLOBAL);
+ if (f3_handle == NULL) {
+ fprintf(stderr, "unable to open 'func3.shared': %s\n", dlerror());
+ return EXIT_FAILURE;
+ }
+
+ void (*func3)(void) = (void (*)(void))dlsym(f3_handle, "func3");
+ if (func3 == NULL) {
+ fprintf(stderr, "unable to lookup symbol 'func3': %s\n", dlerror());
return EXIT_FAILURE;
}
+ func3();
+#endif
dlerror();
- void (*f1_flush)() = (void (*)())dlsym(f1_handle, "llvm_gcov_flush");
- if (f1_flush == NULL) {
- fprintf(stderr, "unable to find llvm_gcov_flush in func.shared': %s\n", dlerror());
+ void (*gcov_flush1)() = (void (*)())dlsym(f1_handle, "__gcov_flush");
+ if (gcov_flush1 == NULL) {
+ fprintf(stderr, "unable to find __gcov_flush in func.shared': %s\n", dlerror());
return EXIT_FAILURE;
}
- f1_flush();
dlerror();
- void (*f2_flush)() = (void (*)())dlsym(f2_handle, "llvm_gcov_flush");
- if (f2_flush == NULL) {
- fprintf(stderr, "unable to find llvm_gcov_flush in func2.shared': %s\n", dlerror());
+ void (*gcov_flush2)() = (void (*)())dlsym(f2_handle, "__gcov_flush");
+ if (gcov_flush2 == NULL) {
+ fprintf(stderr, "unable to find __gcov_flush in func2.shared': %s\n", dlerror());
return EXIT_FAILURE;
}
- f2_flush();
- if (f1_flush == f2_flush) {
- fprintf(stderr, "Same llvm_gcov_flush found in func.shared and func2.shared\n");
+ if (gcov_flush1 == gcov_flush2) {
+ fprintf(stderr, "Same __gcov_flush found in func.shared and func2.shared\n");
return EXIT_FAILURE;
}
@@ -51,6 +70,17 @@ int main(int argc, char *argv[]) {
return EXIT_FAILURE;
}
+ func();
+
+ int g1 = 0;
+ int g2 = 0;
+ int n = 10;
+
+ if (n % 5 == 0)
+ g1++;
+ else
+ g2++;
+
return EXIT_SUCCESS;
}
Modified: compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test?rev=336678&r1=336677&r2=336678&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test (original)
+++ compiler-rt/trunk/test/profile/instrprof-dlopen-dlclose-gcov.test Tue Jul 10 07:12:03 2018
@@ -1,6 +1,33 @@
+# This test fails on powerpc64 BE and s390x (https://bugs.llvm.org/show_bug.cgi?id=38121).
+XFAIL: s390x || powerpc64-unknown-linux-gnu
+
RUN: mkdir -p %t.d
-RUN: %clang --coverage -o %t.d/func.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func.c
-RUN: %clang --coverage -o %t.d/func2.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func2.c
+RUN: cd %t.d
+
+RUN: %clang --coverage -o func.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func.c
+RUN: %clang --coverage -o func2.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func2.c
+RUN: %clang --coverage -o func3.shared -fPIC -shared %S/Inputs/instrprof-dlopen-func3.c
RUN: %clang --coverage -o %t -fPIC -rpath %t.d %S/Inputs/instrprof-dlopen-dlclose-main.c
+# Test with two dlopened libraries.
+RUN: %run %t
+RUN: llvm-cov gcov instrprof-dlopen-dlclose-main.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-dlclose-main.c.gcov %S/Inputs/instrprof-dlopen-dlclose-main.c.gcov
+RUN: llvm-cov gcov instrprof-dlopen-func.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func.c.gcov %S/Inputs/instrprof-dlopen-func.c.gcov
+RUN: llvm-cov gcov instrprof-dlopen-func2.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func2.c.gcov
+RUN: rm instrprof-dlopen-dlclose-main.gcda instrprof-dlopen-func.gcda instrprof-dlopen-func2.gcda
+
+# Test with three dlopened libraries.
+RUN: %clang -DUSE_LIB3 --coverage -o %t -fPIC -rpath %t.d %S/Inputs/instrprof-dlopen-dlclose-main.c
RUN: %run %t
+RUN: llvm-cov gcov instrprof-dlopen-dlclose-main.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-dlclose-main.c.gcov %S/Inputs/instrprof-dlopen-dlclose-main_three-libs.c.gcov
+RUN: llvm-cov gcov instrprof-dlopen-func.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func.c.gcov %S/Inputs/instrprof-dlopen-func.c.gcov
+RUN: llvm-cov gcov instrprof-dlopen-func2.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func2.c.gcov
+RUN: llvm-cov gcov instrprof-dlopen-func3.gcda
+RUN: FileCheck --match-full-lines --strict-whitespace --input-file instrprof-dlopen-func2.c.gcov %S/Inputs/instrprof-dlopen-func3.c.gcov
+RUN: rm instrprof-dlopen-dlclose-main.gcda instrprof-dlopen-func.gcda instrprof-dlopen-func2.gcda instrprof-dlopen-func3.gcda
Copied: compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test (from r336473, compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test)
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test?p2=compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test&p1=compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test&r1=336473&r2=336678&rev=336678&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test (original)
+++ compiler-rt/trunk/test/profile/instrprof-gcov-two-objects.test Tue Jul 10 07:12:03 2018
@@ -1,3 +1,6 @@
+# This test fails on powerpc64 BE and s390x (https://bugs.llvm.org/show_bug.cgi?id=38121).
+XFAIL: s390x || powerpc64-unknown-linux-gnu
+
RUN: mkdir -p %t.d
RUN: cd %t.d
Copied: compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test (from r336473, compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test)
URL: http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test?p2=compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test&p1=compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test&r1=336473&r2=336678&rev=336678&view=diff
==============================================================================
--- compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test (original)
+++ compiler-rt/trunk/test/profile/instrprof-shared-gcov-flush.test Tue Jul 10 07:12:03 2018
@@ -1,3 +1,6 @@
+# This test fails on Mac, powerpc64 BE and s390x (https://bugs.llvm.org/show_bug.cgi?id=38121).
+XFAIL: darwin || s390x || powerpc64-unknown-linux-gnu
+
RUN: mkdir -p %t.d
RUN: cd %t.d
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