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llvm-project/clang/test/CodeGen/pass-object-size.c

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Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
// RUN: %clang_cc1 -triple x86_64-apple-darwin -emit-llvm -O0 %s -o - 2>&1 | FileCheck %s
typedef unsigned long size_t;
struct Foo {
int t[10];
};
#define PS(N) __attribute__((pass_object_size(N)))
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
#define PDS(N) __attribute__((pass_dynamic_object_size(N)))
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int gi = 0;
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @ObjectSize0(i8* %{{.*}}, i64 %0)
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int ObjectSize0(void *const p PS(0)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 0);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @DynamicObjectSize0(i8* %{{.*}}, i64 %0)
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int DynamicObjectSize0(void *const p PDS(0)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_dynamic_object_size(p, 0);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @ObjectSize1(i8* %{{.*}}, i64 %0)
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int ObjectSize1(void *const p PS(1)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 1);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @DynamicObjectSize1(i8* %{{.*}}, i64 %0)
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int DynamicObjectSize1(void *const p PDS(1)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_dynamic_object_size(p, 1);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @ObjectSize2(i8* %{{.*}}, i64 %0)
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int ObjectSize2(void *const p PS(2)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 2);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @DynamicObjectSize2(i8* %{{.*}}, i64 %0)
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int DynamicObjectSize2(void *const p PDS(2)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 2);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @ObjectSize3(i8* %{{.*}}, i64 %0)
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int ObjectSize3(void *const p PS(3)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 3);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @DynamicObjectSize3(i8* %{{.*}}, i64 %0)
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int DynamicObjectSize3(void *const p PDS(3)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 3);
}
void *malloc(unsigned long) __attribute__((alloc_size(1)));
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test1
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
void test1(unsigned long sz) {
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
struct Foo t[10];
// CHECK: call i32 @ObjectSize0(i8* %{{.*}}, i64 360)
gi = ObjectSize0(&t[1]);
// CHECK: call i32 @ObjectSize1(i8* %{{.*}}, i64 360)
gi = ObjectSize1(&t[1]);
// CHECK: call i32 @ObjectSize2(i8* %{{.*}}, i64 360)
gi = ObjectSize2(&t[1]);
// CHECK: call i32 @ObjectSize3(i8* %{{.*}}, i64 360)
gi = ObjectSize3(&t[1]);
// CHECK: call i32 @ObjectSize0(i8* %{{.*}}, i64 356)
gi = ObjectSize0(&t[1].t[1]);
// CHECK: call i32 @ObjectSize1(i8* %{{.*}}, i64 36)
gi = ObjectSize1(&t[1].t[1]);
// CHECK: call i32 @ObjectSize2(i8* %{{.*}}, i64 356)
gi = ObjectSize2(&t[1].t[1]);
// CHECK: call i32 @ObjectSize3(i8* %{{.*}}, i64 36)
gi = ObjectSize3(&t[1].t[1]);
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
char *ptr = (char *)malloc(sz);
// CHECK: [[REG:%.*]] = call i64 @llvm.objectsize.i64.p0i8({{.*}}, i1 false, i1 true, i1 true)
// CHECK: call i32 @DynamicObjectSize0(i8* %{{.*}}, i64 [[REG]])
gi = DynamicObjectSize0(ptr);
// CHECK: [[WITH_OFFSET:%.*]] = getelementptr
// CHECK: [[REG:%.*]] = call i64 @llvm.objectsize.i64.p0i8(i8* [[WITH_OFFSET]], i1 false, i1 true, i1 true)
// CHECK: call i32 @DynamicObjectSize0(i8* {{.*}}, i64 [[REG]])
gi = DynamicObjectSize0(ptr+10);
// CHECK: [[REG:%.*]] = call i64 @llvm.objectsize.i64.p0i8({{.*}}, i1 true, i1 true, i1 true)
// CHECK: call i32 @DynamicObjectSize2(i8* {{.*}}, i64 [[REG]])
gi = DynamicObjectSize2(ptr);
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test2
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test2(struct Foo *t) {
[Sema] Fix PR30346: relax __builtin_object_size checks. This patch makes us act more conservatively when trying to determine the objectsize for an array at the end of an object. This is in response to code like the following: ``` struct sockaddr { /* snip */ char sa_data[14]; }; void foo(const char *s) { size_t slen = strlen(s) + 1; size_t added_len = slen <= 14 ? 0 : slen - 14; struct sockaddr *sa = malloc(sizeof(struct sockaddr) + added_len); strcpy(sa->sa_data, s); // ... } ``` `__builtin_object_size(sa->sa_data, 1)` would return 14, when there could be more than 14 bytes at `sa->sa_data`. Code like this is apparently not uncommon. FreeBSD's manual even explicitly mentions this pattern: https://www.freebsd.org/doc/en/books/developers-handbook/sockets-essential-functions.html (section 7.5.1.1.2). In light of this, we now just give up on any array at the end of an object if we can't find the object's initial allocation. I lack numbers for how much more conservative we actually become as a result of this change, so I chose the fix that would make us as compatible with GCC as possible. If we want to be more aggressive, I'm happy to consider some kind of whitelist or something instead. llvm-svn: 281277
2016-09-13 07:50:35 +08:00
// CHECK: [[VAR:%[0-9]+]] = call i64 @llvm.objectsize
// CHECK: call i32 @ObjectSize1(i8* %{{.*}}, i64 [[VAR]])
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
gi = ObjectSize1(&t->t[1]);
// CHECK: call i32 @ObjectSize3(i8* %{{.*}}, i64 36)
gi = ObjectSize3(&t->t[1]);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z27NoViableOverloadObjectSize0Pv
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int NoViableOverloadObjectSize0(void *const p) __attribute__((overloadable)) {
// CHECK: @llvm.objectsize
return __builtin_object_size(p, 0);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z34NoViableOverloadDynamicObjectSize0Pv
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int NoViableOverloadDynamicObjectSize0(void *const p)
__attribute__((overloadable)) {
// CHECK: @llvm.objectsize
return __builtin_object_size(p, 0);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z27NoViableOverloadObjectSize1Pv
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int NoViableOverloadObjectSize1(void *const p) __attribute__((overloadable)) {
// CHECK: @llvm.objectsize
return __builtin_object_size(p, 1);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z27NoViableOverloadObjectSize2Pv
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int NoViableOverloadObjectSize2(void *const p) __attribute__((overloadable)) {
// CHECK: @llvm.objectsize
return __builtin_object_size(p, 2);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z27NoViableOverloadObjectSize3Pv
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int NoViableOverloadObjectSize3(void *const p) __attribute__((overloadable)) {
// CHECK-NOT: @llvm.objectsize
return __builtin_object_size(p, 3);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @_Z27NoViableOverloadObjectSize0Pv
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
// CHECK-NOT: @llvm.objectsize
int NoViableOverloadObjectSize0(void *const p PS(0))
__attribute__((overloadable)) {
return __builtin_object_size(p, 0);
}
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int NoViableOverloadDynamicObjectSize0(void *const p PDS(0))
__attribute__((overloadable)) {
return __builtin_dynamic_object_size(p, 0);
}
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int NoViableOverloadObjectSize1(void *const p PS(1))
__attribute__((overloadable)) {
return __builtin_object_size(p, 1);
}
int NoViableOverloadObjectSize2(void *const p PS(2))
__attribute__((overloadable)) {
return __builtin_object_size(p, 2);
}
int NoViableOverloadObjectSize3(void *const p PS(3))
__attribute__((overloadable)) {
return __builtin_object_size(p, 3);
}
const static int SHOULDNT_BE_CALLED = -100;
int NoViableOverloadObjectSize0(void *const p PS(0))
__attribute__((overloadable, enable_if(p == 0, "never selected"))) {
return SHOULDNT_BE_CALLED;
}
int NoViableOverloadObjectSize1(void *const p PS(1))
__attribute__((overloadable, enable_if(p == 0, "never selected"))) {
return SHOULDNT_BE_CALLED;
}
int NoViableOverloadObjectSize2(void *const p PS(2))
__attribute__((overloadable, enable_if(p == 0, "never selected"))) {
return SHOULDNT_BE_CALLED;
}
int NoViableOverloadObjectSize3(void *const p PS(3))
__attribute__((overloadable, enable_if(p == 0, "never selected"))) {
return SHOULDNT_BE_CALLED;
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test3
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test3() {
struct Foo t[10];
// CHECK: call i32 @_Z27NoViableOverloadObjectSize0PvU17pass_object_size0(i8* %{{.*}}, i64 360)
gi = NoViableOverloadObjectSize0(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize1PvU17pass_object_size1(i8* %{{.*}}, i64 360)
gi = NoViableOverloadObjectSize1(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize2PvU17pass_object_size2(i8* %{{.*}}, i64 360)
gi = NoViableOverloadObjectSize2(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize3PvU17pass_object_size3(i8* %{{.*}}, i64 360)
gi = NoViableOverloadObjectSize3(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize0PvU17pass_object_size0(i8* %{{.*}}, i64 356)
gi = NoViableOverloadObjectSize0(&t[1].t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize1PvU17pass_object_size1(i8* %{{.*}}, i64 36)
gi = NoViableOverloadObjectSize1(&t[1].t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize2PvU17pass_object_size2(i8* %{{.*}}, i64 356)
gi = NoViableOverloadObjectSize2(&t[1].t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize3PvU17pass_object_size3(i8* %{{.*}}, i64 36)
gi = NoViableOverloadObjectSize3(&t[1].t[1]);
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
// CHECK: call i32 @_Z34NoViableOverloadDynamicObjectSize0PvU25pass_dynamic_object_size0(i8* %{{.*}}, i64 360)
gi = NoViableOverloadDynamicObjectSize0(&t[1]);
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test4
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test4(struct Foo *t) {
// CHECK: call i32 @_Z27NoViableOverloadObjectSize0PvU17pass_object_size0(i8* %{{.*}}, i64 %{{.*}})
gi = NoViableOverloadObjectSize0(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize1PvU17pass_object_size1(i8* %{{.*}}, i64 %{{.*}})
gi = NoViableOverloadObjectSize1(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize2PvU17pass_object_size2(i8* %{{.*}}, i64 %{{.*}})
gi = NoViableOverloadObjectSize2(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize3PvU17pass_object_size3(i8* %{{.*}}, i64 0)
gi = NoViableOverloadObjectSize3(&t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize0PvU17pass_object_size0(i8* %{{.*}}, i64 %{{.*}})
gi = NoViableOverloadObjectSize0(&t[1].t[1]);
[Sema] Fix PR30346: relax __builtin_object_size checks. This patch makes us act more conservatively when trying to determine the objectsize for an array at the end of an object. This is in response to code like the following: ``` struct sockaddr { /* snip */ char sa_data[14]; }; void foo(const char *s) { size_t slen = strlen(s) + 1; size_t added_len = slen <= 14 ? 0 : slen - 14; struct sockaddr *sa = malloc(sizeof(struct sockaddr) + added_len); strcpy(sa->sa_data, s); // ... } ``` `__builtin_object_size(sa->sa_data, 1)` would return 14, when there could be more than 14 bytes at `sa->sa_data`. Code like this is apparently not uncommon. FreeBSD's manual even explicitly mentions this pattern: https://www.freebsd.org/doc/en/books/developers-handbook/sockets-essential-functions.html (section 7.5.1.1.2). In light of this, we now just give up on any array at the end of an object if we can't find the object's initial allocation. I lack numbers for how much more conservative we actually become as a result of this change, so I chose the fix that would make us as compatible with GCC as possible. If we want to be more aggressive, I'm happy to consider some kind of whitelist or something instead. llvm-svn: 281277
2016-09-13 07:50:35 +08:00
// CHECK: [[VAR:%[0-9]+]] = call i64 @llvm.objectsize
// CHECK: call i32 @_Z27NoViableOverloadObjectSize1PvU17pass_object_size1(i8* %{{.*}}, i64 [[VAR]])
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
gi = NoViableOverloadObjectSize1(&t[1].t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize2PvU17pass_object_size2(i8* %{{.*}}, i64 %{{.*}})
gi = NoViableOverloadObjectSize2(&t[1].t[1]);
// CHECK: call i32 @_Z27NoViableOverloadObjectSize3PvU17pass_object_size3(i8* %{{.*}}, i64 36)
gi = NoViableOverloadObjectSize3(&t[1].t[1]);
}
void test5() {
struct Foo t[10];
int (*f)(void *) = &NoViableOverloadObjectSize0;
gi = f(&t[1]);
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int (*g)(void *) = &NoViableOverloadDynamicObjectSize0;
gi = g(&t[1]);
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @IndirectObjectSize0
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int IndirectObjectSize0(void *const p PS(0)) {
// CHECK: call i32 @ObjectSize0(i8* %{{.*}}, i64 %{{.*}})
// CHECK-NOT: @llvm.objectsize
return ObjectSize0(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @IndirectObjectSize1
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int IndirectObjectSize1(void *const p PS(1)) {
// CHECK: call i32 @ObjectSize1(i8* %{{.*}}, i64 %{{.*}})
// CHECK-NOT: @llvm.objectsize
return ObjectSize1(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @IndirectObjectSize2
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int IndirectObjectSize2(void *const p PS(2)) {
// CHECK: call i32 @ObjectSize2(i8* %{{.*}}, i64 %{{.*}})
// CHECK-NOT: @llvm.objectsize
return ObjectSize2(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} i32 @IndirectObjectSize3
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int IndirectObjectSize3(void *const p PS(3)) {
// CHECK: call i32 @ObjectSize3(i8* %{{.*}}, i64 %{{.*}})
// CHECK-NOT: @llvm.objectsize
return ObjectSize3(p);
}
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
int IndirectDynamicObjectSize0(void *const p PDS(0)) {
// CHECK: call i32 @ObjectSize0(i8* %{{.*}}, i64 %{{.*}})
// CHECK-NOT: @llvm.objectsize
return ObjectSize0(p);
}
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int Overload0(void *, size_t, void *, size_t);
int OverloadNoSize(void *, void *);
int OverloadedObjectSize(void *const p PS(0),
void *const c PS(0))
__attribute__((overloadable)) __asm__("Overload0");
int OverloadedObjectSize(void *const p, void *const c)
__attribute__((overloadable)) __asm__("OverloadNoSize");
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test6
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test6() {
int known[10], *opaque;
// CHECK: call i32 @"\01Overload0"
gi = OverloadedObjectSize(&known[0], &known[0]);
// CHECK: call i32 @"\01Overload0"
gi = OverloadedObjectSize(&known[0], opaque);
// CHECK: call i32 @"\01Overload0"
gi = OverloadedObjectSize(opaque, &known[0]);
// CHECK: call i32 @"\01Overload0"
gi = OverloadedObjectSize(opaque, opaque);
}
int Identity(void *p, size_t i) { return i; }
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-NOT: define{{.*}} void @AsmObjectSize
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
int AsmObjectSize0(void *const p PS(0)) __asm__("Identity");
int AsmObjectSize1(void *const p PS(1)) __asm__("Identity");
int AsmObjectSize2(void *const p PS(2)) __asm__("Identity");
int AsmObjectSize3(void *const p PS(3)) __asm__("Identity");
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test7
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test7() {
struct Foo t[10];
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 360)
gi = AsmObjectSize0(&t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 360)
gi = AsmObjectSize1(&t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 360)
gi = AsmObjectSize2(&t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 360)
gi = AsmObjectSize3(&t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 356)
gi = AsmObjectSize0(&t[1].t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 36)
gi = AsmObjectSize1(&t[1].t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 356)
gi = AsmObjectSize2(&t[1].t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 36)
gi = AsmObjectSize3(&t[1].t[1]);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test8
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test8(struct Foo *t) {
[Sema] Fix PR30346: relax __builtin_object_size checks. This patch makes us act more conservatively when trying to determine the objectsize for an array at the end of an object. This is in response to code like the following: ``` struct sockaddr { /* snip */ char sa_data[14]; }; void foo(const char *s) { size_t slen = strlen(s) + 1; size_t added_len = slen <= 14 ? 0 : slen - 14; struct sockaddr *sa = malloc(sizeof(struct sockaddr) + added_len); strcpy(sa->sa_data, s); // ... } ``` `__builtin_object_size(sa->sa_data, 1)` would return 14, when there could be more than 14 bytes at `sa->sa_data`. Code like this is apparently not uncommon. FreeBSD's manual even explicitly mentions this pattern: https://www.freebsd.org/doc/en/books/developers-handbook/sockets-essential-functions.html (section 7.5.1.1.2). In light of this, we now just give up on any array at the end of an object if we can't find the object's initial allocation. I lack numbers for how much more conservative we actually become as a result of this change, so I chose the fix that would make us as compatible with GCC as possible. If we want to be more aggressive, I'm happy to consider some kind of whitelist or something instead. llvm-svn: 281277
2016-09-13 07:50:35 +08:00
// CHECK: [[VAR:%[0-9]+]] = call i64 @llvm.objectsize
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 [[VAR]])
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
gi = AsmObjectSize1(&t[1].t[1]);
// CHECK: call i32 @"\01Identity"(i8* %{{.*}}, i64 36)
gi = AsmObjectSize3(&t[1].t[1]);
}
void DifferingObjectSize0(void *const p __attribute__((pass_object_size(0))));
void DifferingObjectSize1(void *const p __attribute__((pass_object_size(1))));
void DifferingObjectSize2(void *const p __attribute__((pass_object_size(2))));
void DifferingObjectSize3(void *const p __attribute__((pass_object_size(3))));
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test9
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test9(void *const p __attribute__((pass_object_size(0)))) {
// CHECK: @llvm.objectsize
DifferingObjectSize2(p);
// CHECK-NOT: @llvm.objectsize
DifferingObjectSize0(p);
DifferingObjectSize1(p);
// CHECK: call void @DifferingObjectSize3(i8* %{{.*}}, i64 0)
DifferingObjectSize3(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test10
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test10(void *const p __attribute__((pass_object_size(1)))) {
// CHECK: @llvm.objectsize
DifferingObjectSize2(p);
// CHECK: @llvm.objectsize
DifferingObjectSize0(p);
// CHECK-NOT: @llvm.objectsize
DifferingObjectSize1(p);
// CHECK: call void @DifferingObjectSize3(i8* %{{.*}}, i64 0)
DifferingObjectSize3(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test11
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test11(void *const p __attribute__((pass_object_size(2)))) {
// CHECK: @llvm.objectsize
DifferingObjectSize0(p);
// CHECK: @llvm.objectsize
DifferingObjectSize1(p);
// CHECK-NOT: @llvm.objectsize
DifferingObjectSize2(p);
// CHECK: call void @DifferingObjectSize3(i8* %{{.*}}, i64 0)
DifferingObjectSize3(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test12
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test12(void *const p __attribute__((pass_object_size(3)))) {
// CHECK: @llvm.objectsize
DifferingObjectSize0(p);
// CHECK: @llvm.objectsize
DifferingObjectSize1(p);
// CHECK-NOT: @llvm.objectsize
DifferingObjectSize2(p);
DifferingObjectSize3(p);
}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test13
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
void test13() {
char c[10];
[CodeGen] Don't reemit expressions for pass_object_size params. This fixes an assertion failure in cases where we had expression statements that declared variables nested inside of pass_object_size args. Since we were emitting the same ExprStmt twice (once for the arg, once for the @llvm.objectsize call), we were getting issues with redefining locals. This also means that we can be more lax about when we emit @llvm.objectsize for pass_object_size args: since we're reusing the arg's value itself, we don't have to care so much about side-effects. llvm-svn: 295935
2017-02-23 13:59:56 +08:00
unsigned i = 0;
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
char *p = c;
// CHECK: @llvm.objectsize
ObjectSize0(p);
[CodeGen] Don't reemit expressions for pass_object_size params. This fixes an assertion failure in cases where we had expression statements that declared variables nested inside of pass_object_size args. Since we were emitting the same ExprStmt twice (once for the arg, once for the @llvm.objectsize call), we were getting issues with redefining locals. This also means that we can be more lax about when we emit @llvm.objectsize for pass_object_size args: since we're reusing the arg's value itself, we don't have to care so much about side-effects. llvm-svn: 295935
2017-02-23 13:59:56 +08:00
// Allow side-effects, since they always need to happen anyway. Just make sure
// we don't perform them twice.
// CHECK: = add
// CHECK-NOT: = add
// CHECK: @llvm.objectsize
// CHECK: call i32 @ObjectSize0
ObjectSize0(p + ++i);
// CHECK: = add
// CHECK: @llvm.objectsize
// CHECK-NOT: = add
// CHECK: call i32 @ObjectSize0
ObjectSize0(p + i++);
Add tests for pass_object_size. These additions were meant to go in as a part of r254554; while it's certainly nice to have new functionality, it's nicer if we have tests to go with it. :) llvm-svn: 254632
2015-12-04 03:19:09 +08:00
}
[CodeGen] Fix a segfault caused by pass_object_size. This patch fixes a bug where we'd segfault (in some cases) if we saw a variadic function with one or more pass_object_size arguments. Differential Revision: http://reviews.llvm.org/D17462 llvm-svn: 272971
2016-06-17 07:06:04 +08:00
// There was a bug where variadic functions with pass_object_size would cause
// problems in the form of failed assertions.
void my_sprintf(char *const c __attribute__((pass_object_size(0))), ...) {}
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test14
[CodeGen] Fix a segfault caused by pass_object_size. This patch fixes a bug where we'd segfault (in some cases) if we saw a variadic function with one or more pass_object_size arguments. Differential Revision: http://reviews.llvm.org/D17462 llvm-svn: 272971
2016-06-17 07:06:04 +08:00
void test14(char *c) {
// CHECK: @llvm.objectsize
// CHECK: call void (i8*, i64, ...) @my_sprintf
my_sprintf(c);
// CHECK: @llvm.objectsize
// CHECK: call void (i8*, i64, ...) @my_sprintf
my_sprintf(c, 1, 2, 3);
}
Call the correct @llvm.objectsize. The following code would crash clang: void foo(unsigned *const __attribute__((pass_object_size(0)))); void bar(unsigned *i) { foo(i); } This is because we were always selecting the version of `@llvm.objectsize` that takes an i8* in CodeGen. Passing an i32* as an i8* makes LLVM very unhappy. (Yes, I'm surprised that this remained uncaught for so long, too. :) ) As an added bonus, we'll now also use the appropriate address space when emitting @llvm.objectsize calls. llvm-svn: 295805
2017-02-22 10:35:51 +08:00
void pass_size_unsigned(unsigned *const PS(0));
// Bug: we weren't lowering to the proper @llvm.objectsize for pointers that
// don't turn into i8*s, which caused crashes.
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test15
Call the correct @llvm.objectsize. The following code would crash clang: void foo(unsigned *const __attribute__((pass_object_size(0)))); void bar(unsigned *i) { foo(i); } This is because we were always selecting the version of `@llvm.objectsize` that takes an i8* in CodeGen. Passing an i32* as an i8* makes LLVM very unhappy. (Yes, I'm surprised that this remained uncaught for so long, too. :) ) As an added bonus, we'll now also use the appropriate address space when emitting @llvm.objectsize calls. llvm-svn: 295805
2017-02-22 10:35:51 +08:00
void test15(unsigned *I) {
// CHECK: @llvm.objectsize.i64.p0i32
// CHECK: call void @pass_size_unsigned
pass_size_unsigned(I);
}
void pass_size_as1(__attribute__((address_space(1))) void *const PS(0));
void pass_size_unsigned_as1(
__attribute__((address_space(1))) unsigned *const PS(0));
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test16
Call the correct @llvm.objectsize. The following code would crash clang: void foo(unsigned *const __attribute__((pass_object_size(0)))); void bar(unsigned *i) { foo(i); } This is because we were always selecting the version of `@llvm.objectsize` that takes an i8* in CodeGen. Passing an i32* as an i8* makes LLVM very unhappy. (Yes, I'm surprised that this remained uncaught for so long, too. :) ) As an added bonus, we'll now also use the appropriate address space when emitting @llvm.objectsize calls. llvm-svn: 295805
2017-02-22 10:35:51 +08:00
void test16(__attribute__((address_space(1))) unsigned *I) {
// CHECK: call i64 @llvm.objectsize.i64.p1i8
// CHECK: call void @pass_size_as1
pass_size_as1(I);
// CHECK: call i64 @llvm.objectsize.i64.p1i32
// CHECK: call void @pass_size_unsigned_as1
pass_size_unsigned_as1(I);
}
[CodeGen] Don't reemit expressions for pass_object_size params. This fixes an assertion failure in cases where we had expression statements that declared variables nested inside of pass_object_size args. Since we were emitting the same ExprStmt twice (once for the arg, once for the @llvm.objectsize call), we were getting issues with redefining locals. This also means that we can be more lax about when we emit @llvm.objectsize for pass_object_size args: since we're reusing the arg's value itself, we don't have to care so much about side-effects. llvm-svn: 295935
2017-02-23 13:59:56 +08:00
// This used to cause assertion failures, since we'd try to emit the statement
// expression (and definitions for `a`) twice.
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test17
[CodeGen] Don't reemit expressions for pass_object_size params. This fixes an assertion failure in cases where we had expression statements that declared variables nested inside of pass_object_size args. Since we were emitting the same ExprStmt twice (once for the arg, once for the @llvm.objectsize call), we were getting issues with redefining locals. This also means that we can be more lax about when we emit @llvm.objectsize for pass_object_size args: since we're reusing the arg's value itself, we don't have to care so much about side-effects. llvm-svn: 295935
2017-02-23 13:59:56 +08:00
void test17(char *C) {
// Check for 65535 to see if we're emitting this pointer twice.
// CHECK: 65535
// CHECK-NOT: 65535
// CHECK: @llvm.objectsize.i64.p0i8(i8* [[PTR:%[^,]+]],
// CHECK-NOT: 65535
// CHECK: call i32 @ObjectSize0(i8* [[PTR]]
ObjectSize0(C + ({ int a = 65535; a; }));
}
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
[test] Add {{.*}} to make tests immune to dso_local/dso_preemptable/(none) differences For a definition (of most linkage types), dso_local is set for ELF -fno-pic/-fpie and COFF, but not for Mach-O. This nuance causes unneeded binary format differences. This patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} ` if there is an explicit linkage. * Clang will set dso_local for Mach-O, which is currently implied by TargetMachine.cpp. This will make COFF/Mach-O and executable ELF similar. * Eventually I hope we can make dso_local the textual LLVM IR default (write explicit "dso_preemptable" when applicable) and -fpic ELF will be similar to everything else. This patch helps move toward that goal.
2020-12-31 12:45:56 +08:00
// CHECK-LABEL: define{{.*}} void @test18
Add a spelling of pass_object_size that uses __builtin_dynamic_object_size The attribute pass_dynamic_object_size(n) behaves exactly like pass_object_size(n), but instead of evaluating __builtin_object_size on calls, it evaluates __builtin_dynamic_object_size, which has the potential to produce runtime code when the object size can't be determined statically. Differential revision: https://reviews.llvm.org/D58757 llvm-svn: 356515
2019-03-20 04:44:18 +08:00
void test18(char *const p PDS(0)) {
// CHECK-NOT: llvm.objectsize
gi = __builtin_dynamic_object_size(p, 0);
gi = __builtin_object_size(p, 0);
}