forked from OSchip/llvm-project
45 lines
1.2 KiB
C
45 lines
1.2 KiB
C
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// 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: %ptrint = ptrtoint
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// CHECK: %maskedptr = and i64 %ptrint, 31
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// CHECK: %maskcond = icmp eq i64 %maskedptr, 0
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// CHECK: call void @llvm.assume(i1 %maskcond)
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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: %ptrint = ptrtoint
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// CHECK: %maskedptr = and i64 %ptrint, 31
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// CHECK: %maskcond = icmp eq i64 %maskedptr, 0
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// CHECK: call void @llvm.assume(i1 %maskcond)
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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: %ptrint = ptrtoint
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// CHECK: %maskedptr = and i64 %ptrint, 31
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// CHECK: %maskcond = icmp eq i64 %maskedptr, 0
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// CHECK: call void @llvm.assume(i1 %maskcond)
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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: %ptrint = ptrtoint
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// CHECK-DAG: %conv = sext i32
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// CHECK: %offsetptr = sub i64 %ptrint, %conv
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// CHECK: %maskedptr = and i64 %offsetptr, 31
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// CHECK: %maskcond = icmp eq i64 %maskedptr, 0
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// CHECK: call void @llvm.assume(i1 %maskcond)
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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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