derek.holloway
7502bf64a4
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37 lines
1.6 KiB
C
37 lines
1.6 KiB
C
// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py
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// RUN: %clang_cc1 -triple x86_64 -emit-llvm -o - %s | opt -S -passes=verify | FileCheck %s
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//
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// Verifies that clang detects memcmp inline version and uses it instead of the builtin.
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typedef unsigned long size_t;
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// Clang requires these attributes for a function to be redefined.
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#define AVAILABLE_EXTERNALLY extern inline __attribute__((always_inline)) __attribute__((gnu_inline))
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const void *con_unify_unimap_p1;
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AVAILABLE_EXTERNALLY
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int memcmp(const void *p, const void *q, unsigned long size) {
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return __builtin_memcmp(p, q, size);
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}
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// CHECK-LABEL: @con_unify_unimap_q1(
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// CHECK-NEXT: entry:
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// CHECK-NEXT: [[P_ADDR_I:%.*]] = alloca ptr, align 8
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// CHECK-NEXT: [[Q_ADDR_I:%.*]] = alloca ptr, align 8
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// CHECK-NEXT: [[SIZE_ADDR_I:%.*]] = alloca i64, align 8
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// CHECK-NEXT: [[TMP0:%.*]] = load ptr, ptr @con_unify_unimap_p1, align 8
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// CHECK-NEXT: store ptr [[TMP0]], ptr [[P_ADDR_I]], align 8
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// CHECK-NEXT: store ptr @con_unify_unimap_q1, ptr [[Q_ADDR_I]], align 8
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// CHECK-NEXT: store i64 4, ptr [[SIZE_ADDR_I]], align 8
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// CHECK-NEXT: [[TMP1:%.*]] = load ptr, ptr [[P_ADDR_I]], align 8
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// CHECK-NEXT: [[TMP2:%.*]] = load ptr, ptr [[Q_ADDR_I]], align 8
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// CHECK-NEXT: [[TMP3:%.*]] = load i64, ptr [[SIZE_ADDR_I]], align 8
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// CHECK-NEXT: [[CALL_I:%.*]] = call i32 @memcmp(ptr noundef [[TMP1]], ptr noundef [[TMP2]], i64 noundef [[TMP3]]) #[[ATTR3:[0-9]+]]
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// CHECK-NEXT: ret i32 [[CALL_I]]
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//
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int con_unify_unimap_q1(void) {
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return memcmp(con_unify_unimap_p1, con_unify_unimap_q1, sizeof(int));
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}
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