31 lines
1.3 KiB
C
31 lines
1.3 KiB
C
|
// Check -fsanitize=signed-integer-overflow and
|
||
|
|
// -fsanitize=unsigned-integer-overflow with promoted unsigned types
|
||
|
|
//
|
||
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s \
|
||
|
|
// RUN: -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=CHECKS
|
||
|
|
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s \
|
||
|
|
// RUN: -fsanitize=unsigned-integer-overflow | FileCheck %s --check-prefix=CHECKU
|
||
|
|
|
||
|
|
unsigned short si, sj, sk;
|
||
|
|
|
||
|
|
// CHECKS-LABEL: define{{.*}} void @testshortmul()
|
||
|
|
// CHECKU-LABEL: define{{.*}} void @testshortmul()
|
||
|
|
void testshortmul() {
|
||
|
|
|
||
|
|
// CHECKS: load i16, i16* @sj
|
||
|
|
// CHECKS: load i16, i16* @sk
|
||
|
|
// CHECKS: [[T1:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[T2:%.*]], i32 [[T3:%.*]])
|
||
|
|
// CHECKS-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T1]], 0
|
||
|
|
// CHECKS-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T1]], 1
|
||
|
|
// CHECKS: call void @__ubsan_handle_mul_overflow
|
||
|
|
//
|
||
|
|
// CHECKU: [[T1:%.*]] = load i16, i16* @sj
|
||
|
|
// CHECKU: [[T2:%.*]] = zext i16 [[T1]]
|
||
|
|
// CHECKU: [[T3:%.*]] = load i16, i16* @sk
|
||
|
|
// CHECKU: [[T4:%.*]] = zext i16 [[T3]]
|
||
|
|
// CHECKU-NOT: llvm.smul
|
||
|
|
// CHECKU-NOT: llvm.umul
|
||
|
|
// CHECKU: [[T5:%.*]] = mul nsw i32 [[T2]], [[T4]]
|
||
|
|
si = sj * sk;
|
||
|
|
}
|