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llvm-project/clang/test/CodeGenCXX/amdgcn-string-literal.cpp

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CodeGen: Emit string literal in constant address space Some targets have constant address space (e.g. amdgcn). For them string literal should be emitted in constant address space then casted to default address space. Differential Revision: https://reviews.llvm.org/D46643 llvm-svn: 332279
2018-05-15 03:20:12 +08:00
// 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
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences 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 `{{.*}} `.
2020-12-31 16:27:11 +08:00
// 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
CodeGen: Emit string literal in constant address space Some targets have constant address space (e.g. amdgcn). For them string literal should be emitted in constant address space then casted to default address space. Differential Revision: https://reviews.llvm.org/D46643 llvm-svn: 332279
2018-05-15 03:20:12 +08:00
// CHECK: @.str.1 = private unnamed_addr addrspace(4) constant [6 x i8] c"l_str\00", align 1
CGDecl::emitStoresForConstant fix synthesized constant's name Summary: The name of the synthesized constants for constant initialization was using mangling for statics, which isn't generally correct and (in a yet-uncommitted patch) causes the mangler to assert out because the static ends up trying to mangle function parameters and this makes no sense. Instead, mangle to `"__const." + FunctionName + "." + DeclName`. Reviewers: rjmccall Subscribers: dexonsmith, cfe-commits Differential Revision: https://reviews.llvm.org/D54055 llvm-svn: 346915
2018-11-15 08:19:18 +08:00
// CHECK: @__const._Z1fv.l_array = private unnamed_addr addrspace(4) constant [8 x i8] c"l_array\00", align 1
CodeGen: Emit string literal in constant address space Some targets have constant address space (e.g. amdgcn). For them string literal should be emitted in constant address space then casted to default address space. Differential Revision: https://reviews.llvm.org/D46643 llvm-svn: 332279
2018-05-15 03:20:12 +08:00
const char* g_str = "g_str";
char g_array[] = "g_array";
void g(const char* p);
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences 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 `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK-LABEL: define{{.*}} void @_Z1fv()
CodeGen: Emit string literal in constant address space Some targets have constant address space (e.g. amdgcn). For them string literal should be emitted in constant address space then casted to default address space. Differential Revision: https://reviews.llvm.org/D46643 llvm-svn: 332279
2018-05-15 03:20:12 +08:00
void f() {
const char* l_str = "l_str";
[CodeGen] Fix string literal address space casting. Summary: - If a string literal is reused directly, need to add necessary address space casting if the target requires that. Reviewers: yaxunl Subscribers: jvesely, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D58509 llvm-svn: 354610
2019-02-22 03:40:20 +08:00
CodeGen: Emit string literal in constant address space Some targets have constant address space (e.g. amdgcn). For them string literal should be emitted in constant address space then casted to default address space. Differential Revision: https://reviews.llvm.org/D46643 llvm-svn: 332279
2018-05-15 03:20:12 +08:00
// 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);
}
[CodeGen] Fix string literal address space casting. Summary: - If a string literal is reused directly, need to add necessary address space casting if the target requires that. Reviewers: yaxunl Subscribers: jvesely, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D58509 llvm-svn: 354610
2019-02-22 03:40:20 +08:00
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences 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 `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK-LABEL: define{{.*}} void @_Z1ev
[CodeGen] Fix string literal address space casting. Summary: - If a string literal is reused directly, need to add necessary address space casting if the target requires that. Reviewers: yaxunl Subscribers: jvesely, cfe-commits Tags: #clang Differential Revision: https://reviews.llvm.org/D58509 llvm-svn: 354610
2019-02-22 03:40:20 +08:00
void e() {
g("string literal");
g("string literal");
}