| // NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py |
| |
| // RUN: %clang_cc1 -triple x86_64 -S -emit-llvm -o - %s | opt -S -verify | FileCheck %s |
| // |
| // Verifies that clang detects memcmp inline version and uses it instead of the builtin. |
| |
| typedef unsigned long size_t; |
| |
| // Clang requires these attributes for a function to be redefined. |
| #define AVAILABLE_EXTERNALLY extern inline __attribute__((always_inline)) __attribute__((gnu_inline)) |
| |
| const void *con_unify_unimap_p1; |
| |
| AVAILABLE_EXTERNALLY |
| int memcmp(const void *p, const void *q, unsigned long size) { |
| return __builtin_memcmp(p, q, size); |
| } |
| |
| // CHECK-LABEL: @con_unify_unimap_q1( |
| // CHECK-NEXT: entry: |
| // CHECK-NEXT: [[P_ADDR_I:%.*]] = alloca i8*, align 8 |
| // CHECK-NEXT: [[Q_ADDR_I:%.*]] = alloca i8*, align 8 |
| // CHECK-NEXT: [[SIZE_ADDR_I:%.*]] = alloca i64, align 8 |
| // CHECK-NEXT: [[TMP0:%.*]] = load i8*, i8** @con_unify_unimap_p1, align 8 |
| // CHECK-NEXT: store i8* [[TMP0]], i8** [[P_ADDR_I]], align 8 |
| // CHECK-NEXT: store i8* bitcast (i32 ()* @con_unify_unimap_q1 to i8*), i8** [[Q_ADDR_I]], align 8 |
| // CHECK-NEXT: store i64 4, i64* [[SIZE_ADDR_I]], align 8 |
| // CHECK-NEXT: [[TMP1:%.*]] = load i8*, i8** [[P_ADDR_I]], align 8 |
| // CHECK-NEXT: [[TMP2:%.*]] = load i8*, i8** [[Q_ADDR_I]], align 8 |
| // CHECK-NEXT: [[TMP3:%.*]] = load i64, i64* [[SIZE_ADDR_I]], align 8 |
| // CHECK-NEXT: [[CALL_I:%.*]] = call i32 @memcmp(i8* [[TMP1]], i8* [[TMP2]], i64 [[TMP3]]) #[[ATTR3:[0-9]+]] |
| // CHECK-NEXT: ret i32 [[CALL_I]] |
| // |
| int con_unify_unimap_q1(void) { |
| return memcmp(con_unify_unimap_p1, con_unify_unimap_q1, sizeof(int)); |
| } |
