| // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 3 |
| // RUN: %clang_cc1 -triple=x86_64 -emit-llvm -o - -std=c23 %s | FileCheck %s |
| |
| #include <stdckdint.h> |
| #include <stdint.h> |
| |
| // CHECK-LABEL: define dso_local void @test_add_overflow_to64( |
| // CHECK-SAME: ) #[[ATTR0:[0-9]+]] { |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[RESULT64:%.*]] = alloca i64, align 8 |
| // CHECK-NEXT: [[FLAG_ADD:%.*]] = alloca i8, align 1 |
| // CHECK-NEXT: store i64 0, ptr [[RESULT64]], align 8 |
| // CHECK-NEXT: [[TMP0:%.*]] = call { i64, i1 } @llvm.sadd.with.overflow.i64(i64 2147483647, i64 1) |
| // CHECK-NEXT: [[TMP1:%.*]] = extractvalue { i64, i1 } [[TMP0]], 1 |
| // CHECK-NEXT: [[TMP2:%.*]] = extractvalue { i64, i1 } [[TMP0]], 0 |
| // CHECK-NEXT: store i64 [[TMP2]], ptr [[RESULT64]], align 8 |
| // CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 [[TMP1]] to i8 |
| // CHECK-NEXT: store i8 [[FROMBOOL]], ptr [[FLAG_ADD]], align 1 |
| // CHECK-NEXT: ret void |
| // |
| void test_add_overflow_to64() { |
| int64_t result64 = 0; |
| bool flag_add = ckd_add(&result64, INT32_MAX, 1); |
| } |
| |
| // CHECK-LABEL: define dso_local void @test_sub_overflow( |
| // CHECK-SAME: ) #[[ATTR0]] { |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[RESULT32:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[FLAG_SUB:%.*]] = alloca i8, align 1 |
| // CHECK-NEXT: store i32 0, ptr [[RESULT32]], align 4 |
| // CHECK-NEXT: [[TMP0:%.*]] = call { i32, i1 } @llvm.ssub.with.overflow.i32(i32 2147483647, i32 -1) |
| // CHECK-NEXT: [[TMP1:%.*]] = extractvalue { i32, i1 } [[TMP0]], 1 |
| // CHECK-NEXT: [[TMP2:%.*]] = extractvalue { i32, i1 } [[TMP0]], 0 |
| // CHECK-NEXT: store i32 [[TMP2]], ptr [[RESULT32]], align 4 |
| // CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 [[TMP1]] to i8 |
| // CHECK-NEXT: store i8 [[FROMBOOL]], ptr [[FLAG_SUB]], align 1 |
| // CHECK-NEXT: ret void |
| // |
| void test_sub_overflow() { |
| int32_t result32 = 0; |
| bool flag_sub = ckd_sub(&result32, INT32_MAX, -1); |
| } |
| |
| // CHECK-LABEL: define dso_local void @test_mul_normal( |
| // CHECK-SAME: ) #[[ATTR0]] { |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[A:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[RESULT:%.*]] = alloca i32, align 4 |
| // CHECK-NEXT: [[FLAG_MUL:%.*]] = alloca i8, align 1 |
| // CHECK-NEXT: store i32 3, ptr [[A]], align 4 |
| // CHECK-NEXT: store i32 0, ptr [[RESULT]], align 4 |
| // CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[A]], align 4 |
| // CHECK-NEXT: [[TMP1:%.*]] = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 [[TMP0]], i32 2) |
| // CHECK-NEXT: [[TMP2:%.*]] = extractvalue { i32, i1 } [[TMP1]], 1 |
| // CHECK-NEXT: [[TMP3:%.*]] = extractvalue { i32, i1 } [[TMP1]], 0 |
| // CHECK-NEXT: store i32 [[TMP3]], ptr [[RESULT]], align 4 |
| // CHECK-NEXT: [[FROMBOOL:%.*]] = zext i1 [[TMP2]] to i8 |
| // CHECK-NEXT: store i8 [[FROMBOOL]], ptr [[FLAG_MUL]], align 1 |
| // CHECK-NEXT: ret void |
| // |
| void test_mul_normal() { |
| int a = 3; |
| int result = 0; |
| bool flag_mul = ckd_mul(&result, a, 2); |
| } |
