| 1 | // Check -fsanitize=signed-integer-overflow and |
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| 2 | // -fsanitize=unsigned-integer-overflow with promoted unsigned types |
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| 3 | // |
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| 4 | // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s \ |
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| 5 | // RUN: -fsanitize=signed-integer-overflow | FileCheck %s --check-prefix=CHECKS |
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| 6 | // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -o - %s \ |
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| 7 | // RUN: -fsanitize=unsigned-integer-overflow | FileCheck %s --check-prefix=CHECKU |
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| 8 | |
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| 9 | unsigned short si, sj, sk; |
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| 10 | |
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| 11 | // CHECKS-LABEL: define void @testshortmul() |
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| 12 | // CHECKU-LABEL: define void @testshortmul() |
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| 13 | void testshortmul() { |
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| 14 | |
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| 15 | // CHECKS: load i16, i16* @sj |
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| 16 | // CHECKS: load i16, i16* @sk |
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| 17 | // CHECKS: [[T1:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[T2:%.*]], i32 [[T3:%.*]]) |
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| 18 | // CHECKS-NEXT: [[T4:%.*]] = extractvalue { i32, i1 } [[T1]], 0 |
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| 19 | // CHECKS-NEXT: [[T5:%.*]] = extractvalue { i32, i1 } [[T1]], 1 |
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| 20 | // CHECKS: call void @__ubsan_handle_mul_overflow |
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| 21 | // |
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| 22 | // CHECKU: [[T1:%.*]] = load i16, i16* @sj |
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| 23 | // CHECKU: [[T2:%.*]] = zext i16 [[T1]] |
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| 24 | // CHECKU: [[T3:%.*]] = load i16, i16* @sk |
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| 25 | // CHECKU: [[T4:%.*]] = zext i16 [[T3]] |
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| 26 | // CHECKU-NOT: llvm.smul |
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| 27 | // CHECKU-NOT: llvm.umul |
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| 28 | // CHECKU: [[T5:%.*]] = mul nsw i32 [[T2]], [[T4]] |
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| 29 | si = sj * sk; |
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| 30 | } |
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| 31 | |
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