5addb736a9
Only mark functions that have address-taken locals as requiring UAR checking. On a large internal app this reduces number of marked functions from 78441 to 66618. Mostly small, trivial getter/setter-type functions are unmarked, but also some amount of larger number-crunching-type functions are unmarked as well. Reviewed By: melver Differential Revision: https://reviews.llvm.org/D139811
96 lines
3.6 KiB
C++
96 lines
3.6 KiB
C++
// RUN: %clangxx %s -o %t && %t | FileCheck %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered && %t | FileCheck -check-prefix=CHECK-C %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=atomics && %t | FileCheck -check-prefix=CHECK-A %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=uar && %t | FileCheck -check-prefix=CHECK-U %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,atomics && %t | FileCheck -check-prefix=CHECK-CA %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,uar && %t | FileCheck -check-prefix=CHECK-CU %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=atomics,uar && %t | FileCheck -check-prefix=CHECK-AU %s
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// RUN: %clangxx %s -o %t -fexperimental-sanitize-metadata=covered,atomics,uar && %t | FileCheck -check-prefix=CHECK-CAU %s
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__attribute__((noinline, not_tail_called)) void escape(const volatile void *p) {
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static const volatile void *sink;
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sink = p;
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}
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// CHECK-NOT: metadata add
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// CHECK: main
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// CHECK-NOT: metadata del
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// CHECK-C: empty: features=0
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// CHECK-A-NOT: empty:
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// CHECK-U-NOT: empty:
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// CHECK-CA: empty: features=1
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// CHECK-CU: empty: features=0
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// CHECK-AU-NOT: empty:
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// CHECK-CAU: empty: features=1
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void empty() {}
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// CHECK-C: normal: features=0
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// CHECK-A: normal: features=1
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// CHECK-U: normal: features=2
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// CHECK-CA: normal: features=1
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// CHECK-CU: normal: features=2
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// CHECK-AU: normal: features=3
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// CHECK-CAU:normal: features=3
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void normal() {
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int x;
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escape(&x);
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}
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// CHECK-C: with_atomic: features=0
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// CHECK-A: with_atomic: features=1
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// CHECK-U-NOT: with_atomic:
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// CHECK-CA: with_atomic: features=1
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// CHECK-CU: with_atomic: features=0
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// CHECK-AU: with_atomic: features=1
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// CHECK-CAU: with_atomic: features=1
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int with_atomic(int *p) { return __atomic_load_n(p, __ATOMIC_RELAXED); }
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// CHECK-C: with_atomic_escape: features=0
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// CHECK-A: with_atomic_escape: features=1
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// CHECK-U: with_atomic_escape: features=2
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// CHECK-CA: with_atomic_escape: features=1
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// CHECK-CU: with_atomic_escape: features=2
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// CHECK-AU: with_atomic_escape: features=3
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// CHECK-CAU: with_atomic_escape: features=3
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int with_atomic_escape(int *p) {
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escape(&p);
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return __atomic_load_n(p, __ATOMIC_RELAXED);
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}
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// CHECK-C: ellipsis: features=0
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// CHECK-A: ellipsis: features=1
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// CHECK-U-NOT: ellipsis:
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// CHECK-CA: ellipsis: features=1
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// CHECK-CU: ellipsis: features=0
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// CHECK-AU: ellipsis: features=1
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// CHECK-CAU: ellipsis: features=1
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void ellipsis(int *p, ...) {
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escape(&p);
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volatile int x;
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x = 0;
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}
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// CHECK-C: ellipsis_with_atomic: features=0
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// CHECK-A: ellipsis_with_atomic: features=1
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// CHECK-U-NOT: ellipsis_with_atomic:
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// CHECK-CA: ellipsis_with_atomic: features=1
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// CHECK-CU: ellipsis_with_atomic: features=0
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// CHECK-AU: ellipsis_with_atomic: features=1
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// CHECK-CAU: ellipsis_with_atomic: features=1
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int ellipsis_with_atomic(int *p, ...) {
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escape(&p);
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return __atomic_load_n(p, __ATOMIC_RELAXED);
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}
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#define FUNCTIONS \
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FN(empty); \
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FN(normal); \
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FN(with_atomic); \
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FN(with_atomic_escape); \
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FN(ellipsis); \
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FN(ellipsis_with_atomic); \
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/**/
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#include "common.h"
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