forked from OSchip/llvm-project
77 lines
2.4 KiB
C
77 lines
2.4 KiB
C
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -emit-llvm -o - %s | FileCheck %s
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// CHECK-LABEL: @test1
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int test1(int *a) {
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// CHECK: [[PTRINT1:%.+]] = ptrtoint
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// CHECK: [[MASKEDPTR1:%.+]] = and i64 [[PTRINT1]], 31
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// CHECK: [[MASKCOND1:%.+]] = icmp eq i64 [[MASKEDPTR1]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND1]])
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a = __builtin_assume_aligned(a, 32, 0ull);
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return a[0];
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}
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// CHECK-LABEL: @test2
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int test2(int *a) {
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// CHECK: [[PTRINT2:%.+]] = ptrtoint
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// CHECK: [[MASKEDPTR2:%.+]] = and i64 [[PTRINT2]], 31
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// CHECK: [[MASKCOND2:%.+]] = icmp eq i64 [[MASKEDPTR2]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND2]])
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a = __builtin_assume_aligned(a, 32, 0);
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return a[0];
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}
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// CHECK-LABEL: @test3
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int test3(int *a) {
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// CHECK: [[PTRINT3:%.+]] = ptrtoint
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// CHECK: [[MASKEDPTR3:%.+]] = and i64 [[PTRINT3]], 31
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// CHECK: [[MASKCOND3:%.+]] = icmp eq i64 [[MASKEDPTR3]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND3]])
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a = __builtin_assume_aligned(a, 32);
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return a[0];
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}
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// CHECK-LABEL: @test4
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int test4(int *a, int b) {
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// CHECK-DAG: [[PTRINT4:%.+]] = ptrtoint
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// CHECK-DAG: [[CONV4:%.+]] = sext i32
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// CHECK: [[OFFSETPTR4:%.+]] = sub i64 [[PTRINT4]], [[CONV4]]
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// CHECK: [[MASKEDPTR4:%.+]] = and i64 [[OFFSETPTR4]], 31
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// CHECK: [[MASKCOND4:%.+]] = icmp eq i64 [[MASKEDPTR4]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND4]])
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a = __builtin_assume_aligned(a, 32, b);
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return a[0];
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}
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int *m1() __attribute__((assume_aligned(64)));
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// CHECK-LABEL: @test5
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int test5() {
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return *m1();
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// CHECK: [[PTRINT5:%.+]] = ptrtoint
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// CHECK: [[MASKEDPTR5:%.+]] = and i64 [[PTRINT5]], 63
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// CHECK: [[MASKCOND5:%.+]] = icmp eq i64 [[MASKEDPTR5]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND5]])
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}
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int *m2() __attribute__((assume_aligned(64, 12)));
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// CHECK-LABEL: @test6
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int test6() {
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return *m2();
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// CHECK: [[PTRINT6:%.+]] = ptrtoint
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// CHECK: [[OFFSETPTR6:%.+]] = sub i64 [[PTRINT6]], 12
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// CHECK: [[MASKEDPTR6:%.+]] = and i64 [[OFFSETPTR6]], 63
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// CHECK: [[MASKCOND6:%.+]] = icmp eq i64 [[MASKEDPTR6]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND6]])
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}
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// CHECK-LABEL: @pr43638
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int pr43638(int *a) {
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a = __builtin_assume_aligned(a, 4294967296);
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return a[0];
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// CHECK: [[PTRINT7:%.+]] = ptrtoint
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// CHECK: [[MASKEDPTR7:%.+]] = and i64 [[PTRINT7]], 536870911
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// CHECK: [[MASKCOND7:%.+]] = icmp eq i64 [[MASKEDPTR7]], 0
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// CHECK: call void @llvm.assume(i1 [[MASKCOND7]])
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}
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