| // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py |
| // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s |
| |
| // CHECK-LABEL: @test1( |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0]], i64 10) ] |
| // CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i64 0 |
| // CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| // CHECK-NEXT: ret i32 [[TMP2]] |
| // |
| int test1(int *a) { |
| __builtin_assume_dereferenceable(a, 10); |
| return a[0]; |
| } |
| |
| // CHECK-LABEL: @test2( |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8 |
| // CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0]], i64 32) ] |
| // CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[A_ADDR]], align 8 |
| // CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i64 0 |
| // CHECK-NEXT: [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX]], align 4 |
| // CHECK-NEXT: ret i32 [[TMP2]] |
| // |
| int test2(int *a) { |
| __builtin_assume_dereferenceable(a, 32ull); |
| return a[0]; |
| } |
