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TheRock/compiler/amd-llvm/clang/test/CodeGen/builtin-assume-dereferenceable.c
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94 lines
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C

// 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];
}
// CHECK-LABEL: @test3(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[N_ADDR:%.*]] = alloca i32, align 4
// CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8
// CHECK-NEXT: store i32 [[N:%.*]], ptr [[N_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[N_ADDR]], align 4
// CHECK-NEXT: [[CONV:%.*]] = sext i32 [[TMP1]] to i64
// CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0]], i64 [[CONV]]) ]
// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i64 0
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: ret i32 [[TMP3]]
//
int test3(int *a, int n) {
__builtin_assume_dereferenceable(a, n);
return a[0];
}
// CHECK-LABEL: @test4(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[N_ADDR:%.*]] = alloca i64, align 8
// CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8
// CHECK-NEXT: store i64 [[N:%.*]], ptr [[N_ADDR]], align 8
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr [[N_ADDR]], align 8
// CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0]], i64 [[TMP1]]) ]
// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i64 0
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: ret i32 [[TMP3]]
//
int test4(int *a, unsigned long long n) {
__builtin_assume_dereferenceable(a, n);
return a[0];
}
// CHECK-LABEL: @test5(
// CHECK-NEXT: entry:
// CHECK-NEXT: [[A_ADDR:%.*]] = alloca ptr, align 8
// CHECK-NEXT: [[N_ADDR:%.*]] = alloca float, align 4
// CHECK-NEXT: store ptr [[A:%.*]], ptr [[A_ADDR]], align 8
// CHECK-NEXT: store float [[N:%.*]], ptr [[N_ADDR]], align 4
// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[TMP1:%.*]] = load float, ptr [[N_ADDR]], align 4
// CHECK-NEXT: [[CONV:%.*]] = fptoui float [[TMP1]] to i64
// CHECK-NEXT: call void @llvm.assume(i1 true) [ "dereferenceable"(ptr [[TMP0]], i64 [[CONV]]) ]
// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[A_ADDR]], align 8
// CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[TMP2]], i64 0
// CHECK-NEXT: [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
// CHECK-NEXT: ret i32 [[TMP3]]
//
int test5(int *a, float n) {
__builtin_assume_dereferenceable(a, n);
return a[0];
}