fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
35 lines
1 KiB
C++
35 lines
1 KiB
C++
// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -emit-llvm %s -o - | FileCheck %s
|
|
|
|
// CHECK: @.str = private unnamed_addr addrspace(4) constant [6 x i8] c"g_str\00", align 1
|
|
// CHECK: @g_str ={{.*}} addrspace(1) global i8* addrspacecast (i8 addrspace(4)* getelementptr inbounds ([6 x i8], [6 x i8] addrspace(4)* @.str, i32 0, i32 0) to i8*), align 8
|
|
// CHECK: @g_array ={{.*}} addrspace(1) global [8 x i8] c"g_array\00", align 1
|
|
// CHECK: @.str.1 = private unnamed_addr addrspace(4) constant [6 x i8] c"l_str\00", align 1
|
|
// CHECK: @__const._Z1fv.l_array = private unnamed_addr addrspace(4) constant [8 x i8] c"l_array\00", align 1
|
|
|
|
const char* g_str = "g_str";
|
|
char g_array[] = "g_array";
|
|
|
|
void g(const char* p);
|
|
|
|
// CHECK-LABEL: define{{.*}} void @_Z1fv()
|
|
void f() {
|
|
const char* l_str = "l_str";
|
|
|
|
// CHECK: call void @llvm.memcpy.p0i8.p4i8.i64
|
|
char l_array[] = "l_array";
|
|
|
|
g(g_str);
|
|
g(g_array);
|
|
g(l_str);
|
|
g(l_array);
|
|
|
|
const char* p = g_str;
|
|
g(p);
|
|
}
|
|
|
|
// CHECK-LABEL: define{{.*}} void @_Z1ev
|
|
void e() {
|
|
g("string literal");
|
|
g("string literal");
|
|
}
|