forked from OSchip/llvm-project
78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
|
|
|
|
// CHECK-LABEL: @test1
|
|
int test1(int *a) {
|
|
// CHECK: [[PTRINT1:%.+]] = ptrtoint
|
|
// CHECK: [[MASKEDPTR1:%.+]] = and i64 [[PTRINT1]], 31
|
|
// CHECK: [[MASKCOND1:%.+]] = icmp eq i64 [[MASKEDPTR1]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND1]])
|
|
a = __builtin_assume_aligned(a, 32, 0ull);
|
|
return a[0];
|
|
}
|
|
|
|
// CHECK-LABEL: @test2
|
|
int test2(int *a) {
|
|
// CHECK: [[PTRINT2:%.+]] = ptrtoint
|
|
// CHECK: [[MASKEDPTR2:%.+]] = and i64 [[PTRINT2]], 31
|
|
// CHECK: [[MASKCOND2:%.+]] = icmp eq i64 [[MASKEDPTR2]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND2]])
|
|
a = __builtin_assume_aligned(a, 32, 0);
|
|
return a[0];
|
|
}
|
|
|
|
// CHECK-LABEL: @test3
|
|
int test3(int *a) {
|
|
// CHECK: [[PTRINT3:%.+]] = ptrtoint
|
|
// CHECK: [[MASKEDPTR3:%.+]] = and i64 [[PTRINT3]], 31
|
|
// CHECK: [[MASKCOND3:%.+]] = icmp eq i64 [[MASKEDPTR3]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND3]])
|
|
a = __builtin_assume_aligned(a, 32);
|
|
return a[0];
|
|
}
|
|
|
|
// CHECK-LABEL: @test4
|
|
int test4(int *a, int b) {
|
|
// CHECK-DAG: [[PTRINT4:%.+]] = ptrtoint
|
|
// CHECK-DAG: [[CONV4:%.+]] = sext i32
|
|
// CHECK: [[OFFSETPTR4:%.+]] = sub i64 [[PTRINT4]], [[CONV4]]
|
|
// CHECK: [[MASKEDPTR4:%.+]] = and i64 [[OFFSETPTR4]], 31
|
|
// CHECK: [[MASKCOND4:%.+]] = icmp eq i64 [[MASKEDPTR4]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND4]])
|
|
a = __builtin_assume_aligned(a, 32, b);
|
|
return a[0];
|
|
}
|
|
|
|
int *m1() __attribute__((assume_aligned(64)));
|
|
|
|
// CHECK-LABEL: @test5(
|
|
// CHECK-NEXT: entry:
|
|
// CHECK-NEXT: [[CALL:%.*]] = call align 64 i32* (...) @m1()
|
|
// CHECK-NEXT: [[TMP0:%.*]] = load i32, i32* [[CALL]], align 4
|
|
// CHECK-NEXT: ret i32 [[TMP0]]
|
|
//
|
|
int test5() {
|
|
return *m1();
|
|
}
|
|
|
|
int *m2() __attribute__((assume_aligned(64, 12)));
|
|
|
|
// CHECK-LABEL: @test6
|
|
int test6() {
|
|
return *m2();
|
|
// CHECK: [[PTRINT6:%.+]] = ptrtoint
|
|
// CHECK: [[OFFSETPTR6:%.+]] = sub i64 [[PTRINT6]], 12
|
|
// CHECK: [[MASKEDPTR6:%.+]] = and i64 [[OFFSETPTR6]], 63
|
|
// CHECK: [[MASKCOND6:%.+]] = icmp eq i64 [[MASKEDPTR6]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND6]])
|
|
}
|
|
|
|
// CHECK-LABEL: @pr43638
|
|
int pr43638(int *a) {
|
|
a = __builtin_assume_aligned(a, 4294967296);
|
|
return a[0];
|
|
// CHECK: [[PTRINT7:%.+]] = ptrtoint
|
|
// CHECK: [[MASKEDPTR7:%.+]] = and i64 [[PTRINT7]], 536870911
|
|
// CHECK: [[MASKCOND7:%.+]] = icmp eq i64 [[MASKEDPTR7]], 0
|
|
// CHECK: call void @llvm.assume(i1 [[MASKCOND7]])
|
|
}
|