https://github.com/AlexVlx created
https://github.com/llvm/llvm-project/pull/93914
Currently the payload for global ctors/dtors is passed as an unqualified
pointer, which relies on the target being reasonable regarding what AS 0 means,
and also is overly conservative. This change correctly places the payload in
the target's global AS, and does the same thing for the
`global_ctors`/`global_dtors` arrays.
>From 34b9646a38c6bdd0419dd9d2eb1bc847c4d16596 Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Tue, 28 May 2024 20:09:15 +0100
Subject: [PATCH 1/7] Fix `emitUsed` to place `used` globals in the Global AS.
Update tests accordingly.
---
clang/lib/CodeGen/CodeGenModule.cpp | 11 ++++++-----
clang/test/CodeGen/2005-12-04-AttributeUsed.c | 2 ++
clang/test/CodeGen/attr-retain.c | 4 +++-
clang/test/CodeGenCUDA/llvm-used.cu | 7 +++++--
clang/test/CodeGenCXX/attr-retain.cpp | 2 ++
...static-member-variable-explicit-specialization.cpp | 6 +++++-
.../test/OpenMP/amdgcn_target_global_constructor.cpp | 4 ++--
7 files changed, 25 insertions(+), 11 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index e4774a587707a..30a18b1c5e7a8 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2047,9 +2047,9 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
llvm::Type *CtorPFTy = llvm::PointerType::get(CtorFTy,
TheModule.getDataLayout().getProgramAddressSpace());
- // Get the type of a ctor entry, { i32, void ()*, i8* }.
+ // Get the type of a ctor entry, { i32, program void ()*, global i8* }.
llvm::StructType *CtorStructTy = llvm::StructType::get(
- Int32Ty, CtorPFTy, VoidPtrTy);
+ Int32Ty, CtorPFTy, GlobalsInt8PtrTy);
// Construct the constructor and destructor arrays.
ConstantInitBuilder builder(*this);
@@ -2061,7 +2061,7 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
if (I.AssociatedData)
ctor.add(I.AssociatedData);
else
- ctor.addNullPointer(VoidPtrTy);
+ ctor.addNullPointer(GlobalsInt8PtrTy);
ctor.finishAndAddTo(ctors);
}
@@ -2928,12 +2928,13 @@ static void emitUsed(CodeGenModule &CGM, StringRef Name,
for (unsigned i = 0, e = List.size(); i != e; ++i) {
UsedArray[i] =
llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
- cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
+ cast<llvm::Constant>(&*List[i]), CGM.GlobalsInt8PtrTy);
}
if (UsedArray.empty())
return;
- llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.Int8PtrTy, UsedArray.size());
+ llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.GlobalsInt8PtrTy,
+ UsedArray.size());
auto *GV = new llvm::GlobalVariable(
CGM.getModule(), ATy, false, llvm::GlobalValue::AppendingLinkage,
diff --git a/clang/test/CodeGen/2005-12-04-AttributeUsed.c
b/clang/test/CodeGen/2005-12-04-AttributeUsed.c
index bd232831fe1a6..c5089d9bda2c6 100644
--- a/clang/test/CodeGen/2005-12-04-AttributeUsed.c
+++ b/clang/test/CodeGen/2005-12-04-AttributeUsed.c
@@ -1,6 +1,8 @@
// RUN: %clang_cc1 %s -triple x86_64-apple-darwin -emit-llvm -o - | FileCheck
%s
+// RUN: %clang_cc1 %s -triple amdgcn-amd-amdhsa -emit-llvm -o - | FileCheck %s
--check-prefix=GLOBALAS
// CHECK: @llvm.used = appending global [2 x ptr] [ptr @foo, ptr @X], section
"llvm.metadata"
+// GLOBALAS: @llvm.compiler.used = appending addrspace(1) global [2 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr @foo to ptr addrspace(1)),
ptr addrspace(1) @X], section "llvm.metadata"
int X __attribute__((used));
int Y;
diff --git a/clang/test/CodeGen/attr-retain.c b/clang/test/CodeGen/attr-retain.c
index fc41be76f9d0a..e86f6ae8ed06c 100644
--- a/clang/test/CodeGen/attr-retain.c
+++ b/clang/test/CodeGen/attr-retain.c
@@ -1,4 +1,5 @@
// RUN: %clang_cc1 -emit-llvm -triple x86_64 %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa %s -o - | FileCheck %s
--check-prefix=GLOBALAS
/// Set !retain regardless of the target. The backend will lower !retain to
/// SHF_GNU_RETAIN on ELF and ignore the metadata for other binary formats.
@@ -11,7 +12,8 @@
// CHECK: @llvm.used = appending global [8 x ptr] [ptr @c0, ptr @foo.l0,
ptr @f0, ptr @f2, ptr @g0, ptr @g1, ptr @g3, ptr @g4], section "llvm.metadata"
// CHECK: @llvm.compiler.used = appending global [3 x ptr] [ptr @f2, ptr
@g3, ptr @g4], section "llvm.metadata"
-
+// GLOBALAS: @llvm.used = appending addrspace(1) global [8 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr addrspace(4) @c0 to ptr
addrspace(1)), ptr addrspace(1) @foo.l0, ptr addrspace(1) addrspacecast (ptr
@f0 to ptr addrspace(1)), ptr addrspace(1) addrspacecast (ptr @f2 to ptr
addrspace(1)), ptr addrspace(1) @g0, ptr addrspace(1) @g1, ptr addrspace(1)
@g3, ptr addrspace(1) @g4], section "llvm.metadata"
+// GLOBALAS: @llvm.compiler.used = appending addrspace(1) global [3 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr @f2 to ptr addrspace(1)),
ptr addrspace(1) @g3, ptr addrspace(1) @g4], section "llvm.metadata"
const int c0 __attribute__((retain)) = 42;
void foo(void) {
diff --git a/clang/test/CodeGenCUDA/llvm-used.cu
b/clang/test/CodeGenCUDA/llvm-used.cu
index c39111dd48036..7782048b52836 100644
--- a/clang/test/CodeGenCUDA/llvm-used.cu
+++ b/clang/test/CodeGenCUDA/llvm-used.cu
@@ -1,8 +1,11 @@
// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple
nvptx64-unknown-unknown | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple
amdgcn-amd-amdhsa | FileCheck %s --check-prefix=NOASCAST
-// Make sure we emit the proper addrspacecast for llvm.used. PR22383 exposed
an
-// issue where we were generating a bitcast instead of an addrspacecast.
+// Make sure we emit the proper addrspacecast for llvm.used iff necessary.
+// PR22383 exposed an issue where we were generating a bitcast instead of an
+// addrspacecast.
// CHECK: @llvm.compiler.used = appending global [1 x ptr] [ptr addrspacecast
(ptr addrspace(1) @a to ptr)], section "llvm.metadata"
+// NOASCAST: @llvm.compiler.used = appending addrspace(1) global [1 x ptr
addrspace(1)] [ptr addrspace(1) @a], section "llvm.metadata"
__attribute__((device)) __attribute__((__used__)) int a[] = {};
diff --git a/clang/test/CodeGenCXX/attr-retain.cpp
b/clang/test/CodeGenCXX/attr-retain.cpp
index 3a56576d81632..73c649ae972bf 100644
--- a/clang/test/CodeGenCXX/attr-retain.cpp
+++ b/clang/test/CodeGenCXX/attr-retain.cpp
@@ -1,6 +1,8 @@
// RUN: %clang_cc1 -emit-llvm -triple x86_64 -Werror %s -o - | FileCheck %s
+// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa -Werror %s -o - |
FileCheck %s --check-prefix=GLOBALAS
// CHECK: @llvm.used = appending global [7 x ptr]
+// GLOBALAS: @llvm.used = appending addrspace(1) global [7 x ptr
addrspace(1)]
// CHECK-SAME: @_ZN2X0C2Ev
// CHECK-SAME: @_ZN2X0C1Ev
// CHECK-SAME: @_ZN2X0D2Ev
diff --git
a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
index 46c4c4d391769..04d29cf1cea51 100644
--- a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
+++ b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
@@ -1,6 +1,8 @@
// RUN: %clang_cc1 %s -std=c++1y -triple=x86_64-pc-linux -emit-llvm -o - |
FileCheck --check-prefix=ELF --check-prefix=ALL %s
// RUN: %clang_cc1 %s -std=c++1y -triple=x86_64-apple-darwin -emit-llvm -o - |
FileCheck --check-prefix=MACHO --check-prefix=ALL %s
// RUN: %clang_cc1 %s -std=c++1y -triple=x86_64-pc-linux -emit-llvm -fdeclspec
-DSELECTANY -o - | FileCheck --check-prefix=ELF-SELECTANY %s
+// RUN: %clang_cc1 %s -std=c++1y -triple=amdgcn-amd-amdhsa -emit-llvm -o - |
FileCheck --check-prefix=GLOBALAS-ELF %s
+// RUN: %clang_cc1 %s -std=c++1y -triple=amdgcn-amd-amdhsa -emit-llvm
-fdeclspec -DSELECTANY -o - | FileCheck --check-prefix=GLOBALAS-ELF-SELECTANY %s
#ifdef SELECTANY
struct S {
@@ -12,6 +14,7 @@ int f();
// ELF-SELECTANY: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr
}] [{ i32, ptr, ptr } { i32 65535, ptr @__cxx_global_var_init, ptr @selectany }]
// ELF-SELECTANY: @llvm.used = appending global [1 x ptr] [ptr @selectany]
+// GLOBALAS-ELF-SELECTANY: @llvm.used = appending addrspace(1) global [1 x ptr
addrspace(1)] [ptr addrspace(1) @selectany]
int __declspec(selectany) selectany = f();
#else
@@ -73,12 +76,13 @@ template<> int A<bool>::a = 10;
// MACHO: { i32, ptr, ptr } { i32 65535, ptr @[[unordered22:[^,]*]], ptr null
},
// ELF: { i32, ptr, ptr } { i32 65535, ptr @[[unordered21:[^,]*]], ptr
@_ZN4Fib2ILi5EE1aE },
-// MACHO: { i32, ptr, ptr } { i32 65535, ptr @[[unordered21:[^,]*]], ptr null
},
+// MACHO: { i32, ptr, ptr } { i32 65535, ptr @[[unordered21:[^,]*]], ptr null
},
// ALL: { i32, ptr, ptr } { i32 65535, ptr
@_GLOBAL__sub_I_static_member_variable_explicit_specialization.cpp, ptr null }]
/// llvm.used ensures SHT_INIT_ARRAY in a section group cannot be GCed.
// ELF: @llvm.used = appending global [14 x ptr] [ptr @_ZN1AIsE1aE, ptr
@_Z1xIsE, ptr @_ZN2ns1aIiE1iE, ptr @_ZN2ns1b1iIiEE, ptr @_ZN1AIvE1aE, ptr
@_Z1xIcE, ptr @_ZN3FibILi5EE1aE, ptr @_ZN3FibILi3EE1aE, ptr @_ZN3FibILi2EE1aE,
ptr @_ZN3FibILi4EE1aE, ptr @_ZN4Fib2ILi5EE1aE, ptr @_ZN4Fib2ILi4EE1aE, ptr
@_ZN4Fib2ILi2EE1aE, ptr @_ZN4Fib2ILi3EE1aE]
+// GLOBALAS-ELF: @llvm.used = appending addrspace(1) global [14 x ptr
addrspace(1)] [ptr addrspace(1) @_ZN1AIsE1aE, ptr addrspace(1) @_Z1xIsE, ptr
addrspace(1) @_ZN2ns1aIiE1iE, ptr addrspace(1) @_ZN2ns1b1iIiEE, ptr
addrspace(1) @_ZN1AIvE1aE, ptr addrspace(1) @_Z1xIcE, ptr addrspace(1)
@_ZN3FibILi5EE1aE, ptr addrspace(1) @_ZN3FibILi3EE1aE, ptr addrspace(1)
@_ZN3FibILi2EE1aE, ptr addrspace(1) @_ZN3FibILi4EE1aE, ptr addrspace(1)
@_ZN4Fib2ILi5EE1aE, ptr addrspace(1) @_ZN4Fib2ILi4EE1aE, ptr addrspace(1)
@_ZN4Fib2ILi2EE1aE, ptr addrspace(1) @_ZN4Fib2ILi3EE1aE], section
"llvm.metadata"
template int A<short>::a; // Unordered
int b = foo();
diff --git a/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
b/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
index 80a5067b357a2..cc9dd56615dc6 100644
--- a/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
+++ b/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
@@ -21,8 +21,8 @@ S A;
#endif
//.
-// CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{
i32, ptr, ptr } { i32 65535, ptr
@_GLOBAL__sub_I_amdgcn_target_global_constructor.cpp, ptr null }]
-// CHECK: @llvm.global_dtors = appending global [1 x { i32, ptr, ptr }] [{
i32, ptr, ptr } { i32 65535, ptr @__dtor_A, ptr null }]
+// CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr
addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr
@_GLOBAL__sub_I_amdgcn_target_global_constructor.cpp, ptr addrspace(1) null }]
+// CHECK: @llvm.global_dtors = appending global [1 x { i32, ptr, ptr
addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr @__dtor_A, ptr
addrspace(1) null }]
//.
// CHECK-LABEL: define {{[^@]+}}@__cxx_global_var_init
// CHECK-SAME: () #[[ATTR0:[0-9]+]] {
>From 90cd705b63cbdf1939b61b07a11d94abbcdea3ec Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Tue, 28 May 2024 20:30:00 +0100
Subject: [PATCH 2/7] Fix formatting.
---
clang/lib/CodeGen/CodeGenModule.cpp | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index 30a18b1c5e7a8..397c611b3ea33 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2048,8 +2048,8 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
TheModule.getDataLayout().getProgramAddressSpace());
// Get the type of a ctor entry, { i32, program void ()*, global i8* }.
- llvm::StructType *CtorStructTy = llvm::StructType::get(
- Int32Ty, CtorPFTy, GlobalsInt8PtrTy);
+ llvm::StructType *CtorStructTy =
+ llvm::StructType::get(Int32Ty, CtorPFTy, GlobalsInt8PtrTy);
// Construct the constructor and destructor arrays.
ConstantInitBuilder builder(*this);
@@ -2068,7 +2068,7 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
auto list =
ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
/*constant*/ false,
- llvm::GlobalValue::AppendingLinkage);
+ llvm::GlobalValue::AppendingLinkage, );
// The LTO linker doesn't seem to like it when we set an alignment
// on appending variables. Take it off as a workaround.
@@ -2926,15 +2926,14 @@ static void emitUsed(CodeGenModule &CGM, StringRef Name,
SmallVector<llvm::Constant*, 8> UsedArray;
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
- UsedArray[i] =
- llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
- cast<llvm::Constant>(&*List[i]), CGM.GlobalsInt8PtrTy);
+ UsedArray[i] = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
+ cast<llvm::Constant>(&*List[i]), CGM.GlobalsInt8PtrTy);
}
if (UsedArray.empty())
return;
- llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.GlobalsInt8PtrTy,
- UsedArray.size());
+ llvm::ArrayType *ATy =
+ llvm::ArrayType::get(CGM.GlobalsInt8PtrTy, UsedArray.size());
auto *GV = new llvm::GlobalVariable(
CGM.getModule(), ATy, false, llvm::GlobalValue::AppendingLinkage,
>From 780f541ed427ad847ec80dd5dd6cc602ef9a01da Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Tue, 28 May 2024 20:44:53 +0100
Subject: [PATCH 3/7] Delete accidental noise.
---
clang/lib/CodeGen/CodeGenModule.cpp | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index 397c611b3ea33..4346ea7b1b6ad 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2068,7 +2068,7 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
auto list =
ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
/*constant*/ false,
- llvm::GlobalValue::AppendingLinkage, );
+ llvm::GlobalValue::AppendingLinkage);
// The LTO linker doesn't seem to like it when we set an alignment
// on appending variables. Take it off as a workaround.
>From e5b604f2b839705d951cd3739210571c70653970 Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Thu, 30 May 2024 15:28:42 +0100
Subject: [PATCH 4/7] Remove `used`/`compiler.used` related changes.
---
clang/lib/CodeGen/CodeGenModule.cpp | 5 ++---
clang/test/CodeGen/2005-12-04-AttributeUsed.c | 2 --
clang/test/CodeGen/asan-constructor.c | 1 +
clang/test/CodeGen/attr-retain.c | 3 ---
clang/test/CodeGenCUDA/llvm-used.cu | 7 ++-----
clang/test/CodeGenCXX/attr-retain.cpp | 2 --
.../static-member-variable-explicit-specialization.cpp | 4 ++--
7 files changed, 7 insertions(+), 17 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index 473a8a251a58f..fc08932d9ae7a 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2927,13 +2927,12 @@ static void emitUsed(CodeGenModule &CGM, StringRef Name,
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
UsedArray[i] = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
- cast<llvm::Constant>(&*List[i]), CGM.GlobalsInt8PtrTy);
+ cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
}
if (UsedArray.empty())
return;
- llvm::ArrayType *ATy =
- llvm::ArrayType::get(CGM.GlobalsInt8PtrTy, UsedArray.size());
+ llvm::ArrayType *ATy = llvm::ArrayType::get(CGM.Int8PtrTy, UsedArray.size());
auto *GV = new llvm::GlobalVariable(
CGM.getModule(), ATy, false, llvm::GlobalValue::AppendingLinkage,
diff --git a/clang/test/CodeGen/2005-12-04-AttributeUsed.c
b/clang/test/CodeGen/2005-12-04-AttributeUsed.c
index c5089d9bda2c6..bd232831fe1a6 100644
--- a/clang/test/CodeGen/2005-12-04-AttributeUsed.c
+++ b/clang/test/CodeGen/2005-12-04-AttributeUsed.c
@@ -1,8 +1,6 @@
// RUN: %clang_cc1 %s -triple x86_64-apple-darwin -emit-llvm -o - | FileCheck
%s
-// RUN: %clang_cc1 %s -triple amdgcn-amd-amdhsa -emit-llvm -o - | FileCheck %s
--check-prefix=GLOBALAS
// CHECK: @llvm.used = appending global [2 x ptr] [ptr @foo, ptr @X], section
"llvm.metadata"
-// GLOBALAS: @llvm.compiler.used = appending addrspace(1) global [2 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr @foo to ptr addrspace(1)),
ptr addrspace(1) @X], section "llvm.metadata"
int X __attribute__((used));
int Y;
diff --git a/clang/test/CodeGen/asan-constructor.c
b/clang/test/CodeGen/asan-constructor.c
index 762bf0778565d..280c550a75fb3 100644
--- a/clang/test/CodeGen/asan-constructor.c
+++ b/clang/test/CodeGen/asan-constructor.c
@@ -1,5 +1,6 @@
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple wasm32-unknown-emscripten -fsanitize=address
-emit-llvm -o - %s | FileCheck %s --check-prefix=EMSCRIPTEN
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fsanitize=address -emit-llvm -o
- %s | FileCheck %s
// CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{
i32, ptr, ptr } { i32 1, ptr @asan.module_ctor, ptr null }]
// EMSCRIPTEN: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }]
[{ i32, ptr, ptr } { i32 50, ptr @asan.module_ctor, ptr null }]
diff --git a/clang/test/CodeGen/attr-retain.c b/clang/test/CodeGen/attr-retain.c
index e86f6ae8ed06c..6a9869c00392d 100644
--- a/clang/test/CodeGen/attr-retain.c
+++ b/clang/test/CodeGen/attr-retain.c
@@ -1,5 +1,4 @@
// RUN: %clang_cc1 -emit-llvm -triple x86_64 %s -o - | FileCheck %s
-// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa %s -o - | FileCheck %s
--check-prefix=GLOBALAS
/// Set !retain regardless of the target. The backend will lower !retain to
/// SHF_GNU_RETAIN on ELF and ignore the metadata for other binary formats.
@@ -12,8 +11,6 @@
// CHECK: @llvm.used = appending global [8 x ptr] [ptr @c0, ptr @foo.l0,
ptr @f0, ptr @f2, ptr @g0, ptr @g1, ptr @g3, ptr @g4], section "llvm.metadata"
// CHECK: @llvm.compiler.used = appending global [3 x ptr] [ptr @f2, ptr
@g3, ptr @g4], section "llvm.metadata"
-// GLOBALAS: @llvm.used = appending addrspace(1) global [8 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr addrspace(4) @c0 to ptr
addrspace(1)), ptr addrspace(1) @foo.l0, ptr addrspace(1) addrspacecast (ptr
@f0 to ptr addrspace(1)), ptr addrspace(1) addrspacecast (ptr @f2 to ptr
addrspace(1)), ptr addrspace(1) @g0, ptr addrspace(1) @g1, ptr addrspace(1)
@g3, ptr addrspace(1) @g4], section "llvm.metadata"
-// GLOBALAS: @llvm.compiler.used = appending addrspace(1) global [3 x ptr
addrspace(1)] [ptr addrspace(1) addrspacecast (ptr @f2 to ptr addrspace(1)),
ptr addrspace(1) @g3, ptr addrspace(1) @g4], section "llvm.metadata"
const int c0 __attribute__((retain)) = 42;
void foo(void) {
diff --git a/clang/test/CodeGenCUDA/llvm-used.cu
b/clang/test/CodeGenCUDA/llvm-used.cu
index 7782048b52836..9f22dabde3c2d 100644
--- a/clang/test/CodeGenCUDA/llvm-used.cu
+++ b/clang/test/CodeGenCUDA/llvm-used.cu
@@ -1,11 +1,8 @@
// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple
nvptx64-unknown-unknown | FileCheck %s
-// RUN: %clang_cc1 -emit-llvm %s -o - -fcuda-is-device -triple
amdgcn-amd-amdhsa | FileCheck %s --check-prefix=NOASCAST
-// Make sure we emit the proper addrspacecast for llvm.used iff necessary.
-// PR22383 exposed an issue where we were generating a bitcast instead of an
-// addrspacecast.
+// Make sure we emit the proper addrspacecast for llvm.used. PR22383 exposed an
+// issue where we were generating a bitcast instead of an addrspacecast.
// CHECK: @llvm.compiler.used = appending global [1 x ptr] [ptr addrspacecast
(ptr addrspace(1) @a to ptr)], section "llvm.metadata"
-// NOASCAST: @llvm.compiler.used = appending addrspace(1) global [1 x ptr
addrspace(1)] [ptr addrspace(1) @a], section "llvm.metadata"
__attribute__((device)) __attribute__((__used__)) int a[] = {};
diff --git a/clang/test/CodeGenCXX/attr-retain.cpp
b/clang/test/CodeGenCXX/attr-retain.cpp
index 73c649ae972bf..3a56576d81632 100644
--- a/clang/test/CodeGenCXX/attr-retain.cpp
+++ b/clang/test/CodeGenCXX/attr-retain.cpp
@@ -1,8 +1,6 @@
// RUN: %clang_cc1 -emit-llvm -triple x86_64 -Werror %s -o - | FileCheck %s
-// RUN: %clang_cc1 -emit-llvm -triple amdgcn-amd-amdhsa -Werror %s -o - |
FileCheck %s --check-prefix=GLOBALAS
// CHECK: @llvm.used = appending global [7 x ptr]
-// GLOBALAS: @llvm.used = appending addrspace(1) global [7 x ptr
addrspace(1)]
// CHECK-SAME: @_ZN2X0C2Ev
// CHECK-SAME: @_ZN2X0C1Ev
// CHECK-SAME: @_ZN2X0D2Ev
diff --git
a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
index 04d29cf1cea51..839e528bf2a9f 100644
--- a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
+++ b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
@@ -14,7 +14,7 @@ int f();
// ELF-SELECTANY: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr
}] [{ i32, ptr, ptr } { i32 65535, ptr @__cxx_global_var_init, ptr @selectany }]
// ELF-SELECTANY: @llvm.used = appending global [1 x ptr] [ptr @selectany]
-// GLOBALAS-ELF-SELECTANY: @llvm.used = appending addrspace(1) global [1 x ptr
addrspace(1)] [ptr addrspace(1) @selectany]
+// GLOBALAS-ELF-SELECTANY: @llvm.global_ctors = appending global [1 x { i32,
ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @__cxx_global_var_init, ptr
@selectany }]
int __declspec(selectany) selectany = f();
#else
@@ -33,6 +33,7 @@ template<> int A<char>::a;
template<> int A<bool>::a = 10;
// ALL: @llvm.global_ctors = appending global [16 x { i32, ptr, ptr }]
+// GLOBALAS-ELF: @llvm.global_ctors = appending global [16 x { i32, ptr, ptr }]
// ELF: [{ i32, ptr, ptr } { i32 65535, ptr @[[unordered:[^,]*]], ptr
@_ZN1AIsE1aE },
// MACHO: [{ i32, ptr, ptr } { i32 65535, ptr @[[unordered:[^,]*]], ptr null },
@@ -82,7 +83,6 @@ template<> int A<bool>::a = 10;
/// llvm.used ensures SHT_INIT_ARRAY in a section group cannot be GCed.
// ELF: @llvm.used = appending global [14 x ptr] [ptr @_ZN1AIsE1aE, ptr
@_Z1xIsE, ptr @_ZN2ns1aIiE1iE, ptr @_ZN2ns1b1iIiEE, ptr @_ZN1AIvE1aE, ptr
@_Z1xIcE, ptr @_ZN3FibILi5EE1aE, ptr @_ZN3FibILi3EE1aE, ptr @_ZN3FibILi2EE1aE,
ptr @_ZN3FibILi4EE1aE, ptr @_ZN4Fib2ILi5EE1aE, ptr @_ZN4Fib2ILi4EE1aE, ptr
@_ZN4Fib2ILi2EE1aE, ptr @_ZN4Fib2ILi3EE1aE]
-// GLOBALAS-ELF: @llvm.used = appending addrspace(1) global [14 x ptr
addrspace(1)] [ptr addrspace(1) @_ZN1AIsE1aE, ptr addrspace(1) @_Z1xIsE, ptr
addrspace(1) @_ZN2ns1aIiE1iE, ptr addrspace(1) @_ZN2ns1b1iIiEE, ptr
addrspace(1) @_ZN1AIvE1aE, ptr addrspace(1) @_Z1xIcE, ptr addrspace(1)
@_ZN3FibILi5EE1aE, ptr addrspace(1) @_ZN3FibILi3EE1aE, ptr addrspace(1)
@_ZN3FibILi2EE1aE, ptr addrspace(1) @_ZN3FibILi4EE1aE, ptr addrspace(1)
@_ZN4Fib2ILi5EE1aE, ptr addrspace(1) @_ZN4Fib2ILi4EE1aE, ptr addrspace(1)
@_ZN4Fib2ILi2EE1aE, ptr addrspace(1) @_ZN4Fib2ILi3EE1aE], section
"llvm.metadata"
template int A<short>::a; // Unordered
int b = foo();
>From 2aa32c55c1cd16c7d1213fb8a47b3ee61a534408 Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Thu, 30 May 2024 15:30:10 +0100
Subject: [PATCH 5/7] Revert unrelated formatting change.
---
clang/lib/CodeGen/CodeGenModule.cpp | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index fc08932d9ae7a..a22f1eb2b8065 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2926,8 +2926,8 @@ static void emitUsed(CodeGenModule &CGM, StringRef Name,
SmallVector<llvm::Constant*, 8> UsedArray;
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
- UsedArray[i] = llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
- cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
+ llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
+ cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
}
if (UsedArray.empty())
>From 7985d43a97251b28ae092f1a90bbf5a726836096 Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Thu, 30 May 2024 15:38:21 +0100
Subject: [PATCH 6/7] Fix typo.
---
clang/lib/CodeGen/CodeGenModule.cpp | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index a22f1eb2b8065..c45c5cab9f48c 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2926,8 +2926,9 @@ static void emitUsed(CodeGenModule &CGM, StringRef Name,
SmallVector<llvm::Constant*, 8> UsedArray;
UsedArray.resize(List.size());
for (unsigned i = 0, e = List.size(); i != e; ++i) {
- llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
- cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
+ UsedArray[i] =
+ llvm::ConstantExpr::getPointerBitCastOrAddrSpaceCast(
+ cast<llvm::Constant>(&*List[i]), CGM.Int8PtrTy);
}
if (UsedArray.empty())
>From 17e41275180ab8f5f1dec7d872e53efa0a40c8eb Mon Sep 17 00:00:00 2001
From: Alex Voicu <alexandru.vo...@amd.com>
Date: Fri, 31 May 2024 02:59:41 +0100
Subject: [PATCH 7/7] Fix the AS for the `global_*tors` arrays.
---
clang/lib/CodeGen/CodeGenModule.cpp | 3 ++-
clang/test/CodeGen/asan-constructor.c | 3 ++-
.../cxx0x-initializer-stdinitializerlist.cpp | 3 ++-
...atic-member-variable-explicit-specialization.cpp | 4 ++--
.../OpenMP/amdgcn_target_global_constructor.cpp | 4 ++--
llvm/lib/Transforms/Utils/ModuleUtils.cpp | 13 ++++++-------
.../llvm-reduce/remove-ifunc-program-addrspace.ll | 4 ++--
7 files changed, 18 insertions(+), 16 deletions(-)
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp
b/clang/lib/CodeGen/CodeGenModule.cpp
index c45c5cab9f48c..b59c5c52783e9 100644
--- a/clang/lib/CodeGen/CodeGenModule.cpp
+++ b/clang/lib/CodeGen/CodeGenModule.cpp
@@ -2068,7 +2068,8 @@ void CodeGenModule::EmitCtorList(CtorList &Fns, const
char *GlobalName) {
auto list =
ctors.finishAndCreateGlobal(GlobalName, getPointerAlign(),
/*constant*/ false,
- llvm::GlobalValue::AppendingLinkage);
+ llvm::GlobalValue::AppendingLinkage,
+ GlobalsInt8PtrTy->getAddressSpace());
// The LTO linker doesn't seem to like it when we set an alignment
// on appending variables. Take it off as a workaround.
diff --git a/clang/test/CodeGen/asan-constructor.c
b/clang/test/CodeGen/asan-constructor.c
index 280c550a75fb3..41212d45a5c63 100644
--- a/clang/test/CodeGen/asan-constructor.c
+++ b/clang/test/CodeGen/asan-constructor.c
@@ -1,6 +1,7 @@
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - %s | FileCheck %s
// RUN: %clang_cc1 -triple wasm32-unknown-emscripten -fsanitize=address
-emit-llvm -o - %s | FileCheck %s --check-prefix=EMSCRIPTEN
-// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fsanitize=address -emit-llvm -o
- %s | FileCheck %s
+// RUN: %clang_cc1 -triple amdgcn-amd-amdhsa -fsanitize=address -emit-llvm -o
- %s | FileCheck %s --check-prefix=GLOBALAS
// CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }] [{
i32, ptr, ptr } { i32 1, ptr @asan.module_ctor, ptr null }]
// EMSCRIPTEN: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr }]
[{ i32, ptr, ptr } { i32 50, ptr @asan.module_ctor, ptr null }]
+// GLOBALAS: @llvm.global_ctors = appending addrspace(1) global [1 x { i32,
ptr, ptr addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 1, ptr
@asan.module_ctor, ptr addrspace(1) null }]
diff --git a/clang/test/CodeGenCXX/cxx0x-initializer-stdinitializerlist.cpp
b/clang/test/CodeGenCXX/cxx0x-initializer-stdinitializerlist.cpp
index aa2f078a5fb0c..2e22192e8b388 100644
--- a/clang/test/CodeGenCXX/cxx0x-initializer-stdinitializerlist.cpp
+++ b/clang/test/CodeGenCXX/cxx0x-initializer-stdinitializerlist.cpp
@@ -90,7 +90,8 @@ std::initializer_list<int> thread_local x = {1, 2, 3, 4};
// AMDGCN: @[[REFTMP1:.*]] = private addrspace(4) constant [2 x i32] [i32 42,
i32 43], align 4
// AMDGCN: @[[REFTMP2:.*]] = private addrspace(4) constant [3 x %{{.*}}]
[%{{.*}} { i32 1 }, %{{.*}} { i32 2 }, %{{.*}} { i32 3 }], align 4
-// CHECK: appending global
+// X86: appending global
+// AMDGCN: appending addrspace(1) global
// thread_local initializer:
// X86-LABEL: define internal void @__cxx_global_var_init
diff --git
a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
index 839e528bf2a9f..58055130cd708 100644
--- a/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
+++ b/clang/test/CodeGenCXX/static-member-variable-explicit-specialization.cpp
@@ -14,7 +14,7 @@ int f();
// ELF-SELECTANY: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr
}] [{ i32, ptr, ptr } { i32 65535, ptr @__cxx_global_var_init, ptr @selectany }]
// ELF-SELECTANY: @llvm.used = appending global [1 x ptr] [ptr @selectany]
-// GLOBALAS-ELF-SELECTANY: @llvm.global_ctors = appending global [1 x { i32,
ptr, ptr }] [{ i32, ptr, ptr } { i32 65535, ptr @__cxx_global_var_init, ptr
@selectany }]
+// GLOBALAS-ELF-SELECTANY: @llvm.global_ctors = appending addrspace(1) global
[1 x { i32, ptr, ptr addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32
65535, ptr @__cxx_global_var_init, ptr addrspace(1) @selectany }]
int __declspec(selectany) selectany = f();
#else
@@ -33,7 +33,7 @@ template<> int A<char>::a;
template<> int A<bool>::a = 10;
// ALL: @llvm.global_ctors = appending global [16 x { i32, ptr, ptr }]
-// GLOBALAS-ELF: @llvm.global_ctors = appending global [16 x { i32, ptr, ptr }]
+// GLOBALAS-ELF: @llvm.global_ctors = appending addrspace(1) global [16 x {
i32, ptr, ptr addrspace(1) }]
// ELF: [{ i32, ptr, ptr } { i32 65535, ptr @[[unordered:[^,]*]], ptr
@_ZN1AIsE1aE },
// MACHO: [{ i32, ptr, ptr } { i32 65535, ptr @[[unordered:[^,]*]], ptr null },
diff --git a/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
b/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
index cc9dd56615dc6..fe414b59588c0 100644
--- a/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
+++ b/clang/test/OpenMP/amdgcn_target_global_constructor.cpp
@@ -21,8 +21,8 @@ S A;
#endif
//.
-// CHECK: @llvm.global_ctors = appending global [1 x { i32, ptr, ptr
addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr
@_GLOBAL__sub_I_amdgcn_target_global_constructor.cpp, ptr addrspace(1) null }]
-// CHECK: @llvm.global_dtors = appending global [1 x { i32, ptr, ptr
addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr @__dtor_A, ptr
addrspace(1) null }]
+// CHECK: @llvm.global_ctors = appending addrspace(1) global [1 x { i32, ptr,
ptr addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr
@_GLOBAL__sub_I_amdgcn_target_global_constructor.cpp, ptr addrspace(1) null }]
+// CHECK: @llvm.global_dtors = appending addrspace(1) global [1 x { i32, ptr,
ptr addrspace(1) }] [{ i32, ptr, ptr addrspace(1) } { i32 65535, ptr @__dtor_A,
ptr addrspace(1) null }]
//.
// CHECK-LABEL: define {{[^@]+}}@__cxx_global_var_init
// CHECK-SAME: () #[[ATTR0:[0-9]+]] {
diff --git a/llvm/lib/Transforms/Utils/ModuleUtils.cpp
b/llvm/lib/Transforms/Utils/ModuleUtils.cpp
index 122279160cc7e..7151cc869bc95 100644
--- a/llvm/lib/Transforms/Utils/ModuleUtils.cpp
+++ b/llvm/lib/Transforms/Utils/ModuleUtils.cpp
@@ -30,6 +30,8 @@ static void appendToGlobalArray(StringRef ArrayName, Module
&M, Function *F,
int Priority, Constant *Data) {
IRBuilder<> IRB(M.getContext());
FunctionType *FnTy = FunctionType::get(IRB.getVoidTy(), false);
+ PointerType *GlobalsInt8PtrTy = PointerType::get(
+ M.getContext(), M.getDataLayout().getDefaultGlobalsAddressSpace());
// Get the current set of static global constructors and add the new ctor
// to the list.
@@ -47,15 +49,15 @@ static void appendToGlobalArray(StringRef ArrayName, Module
&M, Function *F,
} else {
EltTy = StructType::get(IRB.getInt32Ty(),
PointerType::get(FnTy, F->getAddressSpace()),
- IRB.getPtrTy());
+ GlobalsInt8PtrTy);
}
// Build a 3 field global_ctor entry. We don't take a comdat key.
Constant *CSVals[3];
CSVals[0] = IRB.getInt32(Priority);
CSVals[1] = F;
- CSVals[2] = Data ? ConstantExpr::getPointerCast(Data, IRB.getPtrTy())
- : Constant::getNullValue(IRB.getPtrTy());
+ CSVals[2] = Data ? ConstantExpr::getPointerCast(Data, GlobalsInt8PtrTy)
+ : Constant::getNullValue(GlobalsInt8PtrTy);
Constant *RuntimeCtorInit =
ConstantStruct::get(EltTy, ArrayRef(CSVals, EltTy->getNumElements()));
@@ -437,12 +439,9 @@ bool llvm::lowerGlobalIFuncUsersAsGlobalCtor(
InitBuilder.CreateRetVoid();
- PointerType *ConstantDataTy = PointerType::get(Ctx, 0);
-
// TODO: Is this the right priority? Probably should be before any other
// constructors?
const int Priority = 10;
- appendToGlobalCtors(M, NewCtor, Priority,
- ConstantPointerNull::get(ConstantDataTy));
+ appendToGlobalCtors(M, NewCtor, Priority, nullptr);
return UnhandledUsers;
}
diff --git a/llvm/test/tools/llvm-reduce/remove-ifunc-program-addrspace.ll
b/llvm/test/tools/llvm-reduce/remove-ifunc-program-addrspace.ll
index e275d61764b21..7ddab0b6a815e 100644
--- a/llvm/test/tools/llvm-reduce/remove-ifunc-program-addrspace.ll
+++ b/llvm/test/tools/llvm-reduce/remove-ifunc-program-addrspace.ll
@@ -15,8 +15,8 @@ define void @existing_ctor() addrspace(1) {
; CHECK-FINAL: [[TABLE:@[0-9]+]] = internal addrspace(2) global [6 x ptr
addrspace(1)] poison, align 8
-; CHECK-FINAL: @llvm.global_ctors = appending addrspace(2) global [2 x { i32,
ptr addrspace(1), ptr }] [{ i32, ptr addrspace(1), ptr } { i32 0, ptr
addrspace(1) @existing_ctor, ptr null }, { i32, ptr addrspace(1), ptr } { i32
10, ptr addrspace(1) [[TABLE_CTOR:@[0-9]+]], ptr null }]
-@llvm.global_ctors = appending global [1 x { i32, ptr addrspace(1), ptr }] [{
i32, ptr addrspace(1), ptr } { i32 0, ptr addrspace(1) @existing_ctor, ptr null
}]
+; CHECK-FINAL: @llvm.global_ctors = appending addrspace(2) global [2 x { i32,
ptr addrspace(1), ptr addrspace(2) }] [{ i32, ptr addrspace(1), ptr
addrspace(2) } { i32 0, ptr addrspace(1) @existing_ctor, ptr addrspace(2) null
}, { i32, ptr addrspace(1), ptr addrspace(2) } { i32 10, ptr addrspace(1)
[[TABLE_CTOR:@[0-9]+]], ptr addrspace(2) null }]
+@llvm.global_ctors = appending global [1 x { i32, ptr addrspace(1), ptr
addrspace(2) }] [{ i32, ptr addrspace(1), ptr addrspace(2) } { i32 0, ptr
addrspace(1) @existing_ctor, ptr addrspace(2) null }]
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