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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-cir %s -o %t.cir
// RUN: FileCheck --input-file=%t.cir %s -check-prefix=CIR
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -fclangir -emit-llvm -disable-llvm-passes %s -o %t-cir.ll
// RUN: FileCheck --input-file=%t-cir.ll %s -check-prefix=LLVM
// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -disable-llvm-passes %s -o %t.ll
// RUN: FileCheck --input-file=%t.ll %s -check-prefix=OGCG
typedef unsigned long size_t;
// Normal inline builtin declaration
// When a builtin is redefined with extern inline + always_inline attributes,
// the compiler creates a .inline version to avoid conflicts with the builtin
extern inline __attribute__((always_inline)) __attribute__((gnu_inline))
void *memcpy(void *a, const void *b, size_t c) {
return __builtin_memcpy(a, b, c);
}
void *test_inline_builtin_memcpy(void *a, const void *b, size_t c) {
return memcpy(a, b, c);
}
// CIR: cir.func internal private{{.*}}@memcpy.inline({{.*}}) -> !cir.ptr<!void> inline(always)
// CIR-LABEL: @test_inline_builtin_memcpy(
// CIR: cir.call @memcpy.inline(
// CIR: }
// LLVM: define internal ptr @memcpy.inline(ptr{{.*}}, ptr{{.*}}, i64{{.*}}) #{{[0-9]+}}
// LLVM-LABEL: @test_inline_builtin_memcpy(
// LLVM: call ptr @memcpy.inline(
// OGCG-LABEL: @test_inline_builtin_memcpy(
// OGCG: call ptr @memcpy.inline(
// OGCG: define internal ptr @memcpy.inline(ptr{{.*}} %a, ptr{{.*}} %b, i64{{.*}} %c) #{{[0-9]+}}
// Shadowing case
// When a non-inline function definition shadows an inline builtin declaration,
// the .inline version should be replaced with the regular function and removed.
extern inline __attribute__((always_inline)) __attribute__((gnu_inline))
void *memmove(void *a, const void *b, size_t c) {
return __builtin_memmove(a, b, c);
}
void *memmove(void *a, const void *b, size_t c) {
char *dst = (char *)a;
const char *src = (const char *)b;
if (dst < src) {
for (size_t i = 0; i < c; i++) {
dst[i] = src[i];
}
} else {
for (size_t i = c; i > 0; i--) {
dst[i-1] = src[i-1];
}
}
return a;
}
void *test_shadowed_memmove(void *a, const void *b, size_t c) {
return memmove(a, b, c);
}
// CIR: cir.func{{.*}}@memmove({{.*}}) -> !cir.ptr<!void>{{.*}}{
// CIR-NOT: @memmove.inline
// CIR-LABEL: @test_shadowed_memmove(
// CIR: cir.call @memmove(
// CIR-NOT: @memmove.inline
// CIR: }
// LLVM: define dso_local ptr @memmove(ptr{{.*}}, ptr{{.*}}, i64{{.*}}) #{{[0-9]+}}
// LLVM-NOT: @memmove.inline
// LLVM-LABEL: @test_shadowed_memmove(
// TODO - this deviation from OGCG is expected until we implement the nobuiltin
// attribute. See CIRGenFunction::emitDirectCallee
// LLVM: call ptr @memmove(
// LLVM-NOT: @memmove.inline
// LLVM: }
// OGCG: define dso_local ptr @memmove(ptr{{.*}} %a, ptr{{.*}} %b, i64{{.*}} %c) #{{[0-9]+}}
// OGCG-NOT: @memmove.inline
// OGCG-LABEL: @test_shadowed_memmove(
// OGCG: call void @llvm.memmove.p0.p0.i64(
// OGCG-NOT: @memmove.inline
// OGCG: }
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