1 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s 2 3 // CHECK-LABEL: @test1 4 int test1(int *a) { 5 // CHECK: [[PTRINT1:%.+]] = ptrtoint 6 // CHECK: [[MASKEDPTR1:%.+]] = and i64 [[PTRINT1]], 31 7 // CHECK: [[MASKCOND1:%.+]] = icmp eq i64 [[MASKEDPTR1]], 0 8 // CHECK: call void @llvm.assume(i1 [[MASKCOND1]]) 9 a = __builtin_assume_aligned(a, 32, 0ull); 10 return a[0]; 11 } 12 13 // CHECK-LABEL: @test2 14 int test2(int *a) { 15 // CHECK: [[PTRINT2:%.+]] = ptrtoint 16 // CHECK: [[MASKEDPTR2:%.+]] = and i64 [[PTRINT2]], 31 17 // CHECK: [[MASKCOND2:%.+]] = icmp eq i64 [[MASKEDPTR2]], 0 18 // CHECK: call void @llvm.assume(i1 [[MASKCOND2]]) 19 a = __builtin_assume_aligned(a, 32, 0); 20 return a[0]; 21 } 22 23 // CHECK-LABEL: @test3 24 int test3(int *a) { 25 // CHECK: [[PTRINT3:%.+]] = ptrtoint 26 // CHECK: [[MASKEDPTR3:%.+]] = and i64 [[PTRINT3]], 31 27 // CHECK: [[MASKCOND3:%.+]] = icmp eq i64 [[MASKEDPTR3]], 0 28 // CHECK: call void @llvm.assume(i1 [[MASKCOND3]]) 29 a = __builtin_assume_aligned(a, 32); 30 return a[0]; 31 } 32 33 // CHECK-LABEL: @test4 34 int test4(int *a, int b) { 35 // CHECK-DAG: [[PTRINT4:%.+]] = ptrtoint 36 // CHECK-DAG: [[CONV4:%.+]] = sext i32 37 // CHECK: [[OFFSETPTR4:%.+]] = sub i64 [[PTRINT4]], [[CONV4]] 38 // CHECK: [[MASKEDPTR4:%.+]] = and i64 [[OFFSETPTR4]], 31 39 // CHECK: [[MASKCOND4:%.+]] = icmp eq i64 [[MASKEDPTR4]], 0 40 // CHECK: call void @llvm.assume(i1 [[MASKCOND4]]) 41 a = __builtin_assume_aligned(a, 32, b); 42 return a[0]; 43 } 44 45 int *m1() __attribute__((assume_aligned(64))); 46 47 // CHECK-LABEL: @test5 48 int test5() { 49 return *m1(); 50 // CHECK: [[PTRINT5:%.+]] = ptrtoint 51 // CHECK: [[MASKEDPTR5:%.+]] = and i64 [[PTRINT5]], 63 52 // CHECK: [[MASKCOND5:%.+]] = icmp eq i64 [[MASKEDPTR5]], 0 53 // CHECK: call void @llvm.assume(i1 [[MASKCOND5]]) 54 } 55 56 int *m2() __attribute__((assume_aligned(64, 12))); 57 58 // CHECK-LABEL: @test6 59 int test6() { 60 return *m2(); 61 // CHECK: [[PTRINT6:%.+]] = ptrtoint 62 // CHECK: [[OFFSETPTR6:%.+]] = sub i64 [[PTRINT6]], 12 63 // CHECK: [[MASKEDPTR6:%.+]] = and i64 [[OFFSETPTR6]], 63 64 // CHECK: [[MASKCOND6:%.+]] = icmp eq i64 [[MASKEDPTR6]], 0 65 // CHECK: call void @llvm.assume(i1 [[MASKCOND6]]) 66 } 67 68
