[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-14 Thread Ben Shi via cfe-commits 

https://github.com/benshi001 closed 
https://github.com/llvm/llvm-project/pull/68507
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[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-11 Thread Jianjian Guan via cfe-commits 

https://github.com/jacquesguan approved this pull request.

LGTM

https://github.com/llvm/llvm-project/pull/68507
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[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-11 Thread Ben Shi via cfe-commits 

https://github.com/benshi001 updated 
https://github.com/llvm/llvm-project/pull/68507

>From b2a442d6aca019a42baef45e1f245dc1ea5bd8a1 Mon Sep 17 00:00:00 2001
From: Ben Shi 
Date: Wed, 11 Oct 2023 14:05:14 +0800
Subject: [PATCH] [clang][driver] Add avr-libc's default linker script to lld

If lld is specified but no user linker script is offered,
we try to use avr-libc's default ones. This is unnecessary
for GNU ld.
---
 clang/lib/Driver/ToolChains/AVR.cpp   | 14 ++--
 .../usr/lib/avr/lib/ldscripts/avrtiny.x   |  0
 .../usr/lib/avr/lib/ldscripts/avrxmega6.x |  0
 clang/test/Driver/avr-ld.c| 22 +++
 4 files changed, 34 insertions(+), 2 deletions(-)
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x

diff --git a/clang/lib/Driver/ToolChains/AVR.cpp 
b/clang/lib/Driver/ToolChains/AVR.cpp
index e312fa155e11bf8..2e46b25aeba75ef 100644
--- a/clang/lib/Driver/ToolChains/AVR.cpp
+++ b/clang/lib/Driver/ToolChains/AVR.cpp
@@ -554,8 +554,18 @@ void AVR::Linker::ConstructJob(Compilation , const 
JobAction ,
 
 CmdArgs.push_back("--end-group");
 
-// Add user specified linker script.
-Args.AddAllArgs(CmdArgs, options::OPT_T);
+// Add avr-libc's linker script to lld by default, if it exists.
+if (!Args.hasArg(options::OPT_T) &&
+Linker.find("lld") != std::string::npos) {
+  std::string Path(*AVRLibcRoot + "/lib/ldscripts/");
+  Path += *FamilyName;
+  Path += ".x";
+  if (llvm::sys::fs::exists(Path))
+CmdArgs.push_back(Args.MakeArgString("-T" + Path));
+}
+// Otherwise add user specified linker script to either avr-ld or lld.
+else
+  Args.AddAllArgs(CmdArgs, options::OPT_T);
 
 if (Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
   CmdArgs.push_back("--relax");
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git a/clang/test/Driver/avr-ld.c b/clang/test/Driver/avr-ld.c
index 0f12607fe9d69eb..3e4114485332fcd 100644
--- a/clang/test/Driver/avr-ld.c
+++ b/clang/test/Driver/avr-ld.c
@@ -58,6 +58,28 @@
 // LINKS: {{".*ld.*"}} {{.*}} "--defsym=__DATA_REGION_ORIGIN__=0x800100" 
"-plugin-opt=mcpu=atmega328"
 // LINKS-NOT: "-plugin-opt=thinlto"
 
+// RUN: %clang -### --target=avr -mmcu=attiny40 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT0 %s
+// LINKT0: {{".*lld.*"}} {{.*}} {{"-T.*avrtiny.x"}}
+// LINKT0-NOT: "-m
+
+// RUN: %clang -### --target=avr -mmcu=atxmega384c3 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT1 %s
+// LINKT1: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT1-NOT: "-m
+
+// RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT2 %s
+// LINKT2: {{".*lld.*"}} {{.*}} "--start-group" {{.*}} "--end-group"
+// LINKT2-NOT: "-T
+// LINKT2-NOT: "-m
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT3 %s
+// LINKT3: {{".*ld.*"}} {{.*}} "-mavrtiny"
+// LINKT3-NOT: "-T
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree -fuse-ld=lld -T 
%S/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x %s 2>&1 | 
FileCheck -check-prefix LINKT4 %s
+// LINKT4: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT4-NOT: {{"-T.*avrtiny.x"}}
+// LINKT4-NOT: "-m
+
 // RUN: %clang -### -r --target=avr -mmcu=atmega328 --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck --check-prefix=LINKU %s
 // LINKU: {{".*ld.*"}} {{.*}} "-r" {{.*}} "-mavr5"
 // LINKU-NOT: "--gc-sections"

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[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-08 Thread Ben Shi via cfe-commits 

https://github.com/benshi001 updated 
https://github.com/llvm/llvm-project/pull/68507

>From f13fad7cfcfbf654052d595cf3dd985fbaefeb76 Mon Sep 17 00:00:00 2001
From: Ben Shi 
Date: Sun, 8 Oct 2023 15:00:32 +0800
Subject: [PATCH] [clang][driver] Add avr-libc's default linker script to lld

If `-fuse-ld=lld` is specified but no user linker script is offered,
we try to use avr-libc's default one for lld. (not needed for GNU ld)
---
 clang/lib/Driver/ToolChains/AVR.cpp   | 14 +++--
 .../usr/lib/avr/lib/ldscripts/avrtiny.x   |  0
 .../usr/lib/avr/lib/ldscripts/avrxmega6.x |  0
 clang/test/Driver/avr-ld.c| 21 +++
 4 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x

diff --git a/clang/lib/Driver/ToolChains/AVR.cpp 
b/clang/lib/Driver/ToolChains/AVR.cpp
index 81f501d417345d1..9b15b22ecb2218a 100644
--- a/clang/lib/Driver/ToolChains/AVR.cpp
+++ b/clang/lib/Driver/ToolChains/AVR.cpp
@@ -549,8 +549,18 @@ void AVR::Linker::ConstructJob(Compilation , const 
JobAction ,
 
 CmdArgs.push_back("--end-group");
 
-// Add user specified linker script.
-Args.AddAllArgs(CmdArgs, options::OPT_T);
+// Add avr-libc's linker script to lld by default, if it exists.
+if (!Args.hasArg(options::OPT_T) &&
+Linker.find("lld") != std::string::npos) {
+  std::string Path(*AVRLibcRoot + "/lib/ldscripts/");
+  Path += *FamilyName;
+  Path += ".x";
+  if (llvm::sys::fs::exists(Path))
+CmdArgs.push_back(Args.MakeArgString("-T" + Path));
+}
+// Otherwise add user specified linker script to either avr-ld or lld.
+else
+  Args.AddAllArgs(CmdArgs, options::OPT_T);
 
 if (Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
   CmdArgs.push_back("--relax");
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git a/clang/test/Driver/avr-ld.c b/clang/test/Driver/avr-ld.c
index 4042ecb89adf5f1..0019e46629ae52b 100644
--- a/clang/test/Driver/avr-ld.c
+++ b/clang/test/Driver/avr-ld.c
@@ -57,3 +57,24 @@
 // RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld -flto --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKS %s
 // LINKS: {{".*ld.*"}} {{.*}} "--defsym=__DATA_REGION_ORIGIN__=0x800100" 
"-plugin-opt=mcpu=atmega328"
 // LINKS-NOT: "-plugin-opt=thinlto"
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT0 %s
+// LINKT0: {{".*lld.*"}} {{.*}} {{"-T.*avrtiny.x"}}
+// LINKT0-NOT: "-mavrtiny"
+
+// RUN: %clang -### --target=avr -mmcu=atxmega384c3 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT1 %s
+// LINKT1: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT1-NOT: {{"-m.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT2 %s
+// LINKT2: {{".*lld.*"}}
+// LINKT2-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT3 %s
+// LINKT3: {{".*ld.*"}} {{.*}} "-mavrtiny"
+// LINKT3-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree -fuse-ld=lld -T 
%S/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x %s 2>&1 | 
FileCheck -check-prefix LINKT4 %s
+// LINKT4: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT4-NOT: {{"-T.*avrtiny.x"}}
+// LINKT4-NOT: {{"-m.*"}}

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[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-08 Thread via cfe-commits 

llvmbot wrote:




@llvm/pr-subscribers-clang


Changes

If `-fuse-ld=lld` is specified but no user linker script is offered, we try to 
use avr-libc's default one for lld. (not needed for GNU ld)

---
Full diff: https://github.com/llvm/llvm-project/pull/68507.diff


4 Files Affected:

- (modified) clang/lib/Driver/ToolChains/AVR.cpp (+12-2) 
- (added) 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x () 
- (added) 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x 
() 
- (modified) clang/test/Driver/avr-ld.c (+21) 


``diff
diff --git a/clang/lib/Driver/ToolChains/AVR.cpp 
b/clang/lib/Driver/ToolChains/AVR.cpp
index 81f501d417345d1..9b15b22ecb2218a 100644
--- a/clang/lib/Driver/ToolChains/AVR.cpp
+++ b/clang/lib/Driver/ToolChains/AVR.cpp
@@ -549,8 +549,18 @@ void AVR::Linker::ConstructJob(Compilation , const 
JobAction ,
 
 CmdArgs.push_back("--end-group");
 
-// Add user specified linker script.
-Args.AddAllArgs(CmdArgs, options::OPT_T);
+// Add avr-libc's linker script to lld by default, if it exists.
+if (!Args.hasArg(options::OPT_T) &&
+Linker.find("lld") != std::string::npos) {
+  std::string Path(*AVRLibcRoot + "/lib/ldscripts/");
+  Path += *FamilyName;
+  Path += ".x";
+  if (llvm::sys::fs::exists(Path))
+CmdArgs.push_back(Args.MakeArgString("-T" + Path));
+}
+// Otherwise add user specified linker script to either avr-ld or lld.
+else
+  Args.AddAllArgs(CmdArgs, options::OPT_T);
 
 if (Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
   CmdArgs.push_back("--relax");
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git a/clang/test/Driver/avr-ld.c b/clang/test/Driver/avr-ld.c
index 4042ecb89adf5f1..769eb8763caaf61 100644
--- a/clang/test/Driver/avr-ld.c
+++ b/clang/test/Driver/avr-ld.c
@@ -57,3 +57,24 @@
 // RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld -flto --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKS %s
 // LINKS: {{".*ld.*"}} {{.*}} "--defsym=__DATA_REGION_ORIGIN__=0x800100" 
"-plugin-opt=mcpu=atmega328"
 // LINKS-NOT: "-plugin-opt=thinlto"
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT0 %s
+// LINKT0: {{".*lld.*"}} {{.*}} {{"-T.*avrtiny.x"}}
+// LINKT0-NOT: "-mavrtiny"
+
+// RUN: %clang -### --target=avr -mmcu=atxmega384c3 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT1 %s
+// LINKT1: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT1-NOT: "-mavrxmega6"
+
+// RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT2 %s
+// LINKT2: {{".*lld.*"}}
+// LINKT2-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT3 %s
+// LINKT3: {{".*ld.*"}} {{.*}} "-mavrtiny"
+// LINKT3-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree -fuse-ld=lld -T 
%S/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x %s 2>&1 | 
FileCheck -check-prefix LINKT4 %s
+// LINKT4: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT4-NOT: {{"-T.*avrtiny.x"}}
+// LINKT4-NOT: "-mavrtiny"

``




https://github.com/llvm/llvm-project/pull/68507
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[clang] [clang][driver] Add avr-libc's default linker script to lld (PR #68507)

2023-10-08 Thread Ben Shi via cfe-commits 

https://github.com/benshi001 created 
https://github.com/llvm/llvm-project/pull/68507

If `-fuse-ld=lld` is specified but no user linker script is offered, we try to 
use avr-libc's default one for lld. (not needed for GNU ld)

>From 2ac033cc4750ffda8f1aded4b896de93713047ad Mon Sep 17 00:00:00 2001
From: Ben Shi 
Date: Sun, 8 Oct 2023 15:00:32 +0800
Subject: [PATCH] [clang][driver] Add avr-libc's default linker script to lld

If `-fuse-ld=lld` is specified but no user linker script is offered,
we try to use avr-libc's default one for lld. (not needed for GNU ld)
---
 clang/lib/Driver/ToolChains/AVR.cpp   | 14 +++--
 .../usr/lib/avr/lib/ldscripts/avrtiny.x   |  0
 .../usr/lib/avr/lib/ldscripts/avrxmega6.x |  0
 clang/test/Driver/avr-ld.c| 21 +++
 4 files changed, 33 insertions(+), 2 deletions(-)
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
 create mode 100644 
clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x

diff --git a/clang/lib/Driver/ToolChains/AVR.cpp 
b/clang/lib/Driver/ToolChains/AVR.cpp
index 81f501d417345d1..9b15b22ecb2218a 100644
--- a/clang/lib/Driver/ToolChains/AVR.cpp
+++ b/clang/lib/Driver/ToolChains/AVR.cpp
@@ -549,8 +549,18 @@ void AVR::Linker::ConstructJob(Compilation , const 
JobAction ,
 
 CmdArgs.push_back("--end-group");
 
-// Add user specified linker script.
-Args.AddAllArgs(CmdArgs, options::OPT_T);
+// Add avr-libc's linker script to lld by default, if it exists.
+if (!Args.hasArg(options::OPT_T) &&
+Linker.find("lld") != std::string::npos) {
+  std::string Path(*AVRLibcRoot + "/lib/ldscripts/");
+  Path += *FamilyName;
+  Path += ".x";
+  if (llvm::sys::fs::exists(Path))
+CmdArgs.push_back(Args.MakeArgString("-T" + Path));
+}
+// Otherwise add user specified linker script to either avr-ld or lld.
+else
+  Args.AddAllArgs(CmdArgs, options::OPT_T);
 
 if (Args.hasFlag(options::OPT_mrelax, options::OPT_mno_relax, true))
   CmdArgs.push_back("--relax");
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrtiny.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git 
a/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x 
b/clang/test/Driver/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x
new file mode 100644
index 000..e69de29bb2d1d64
diff --git a/clang/test/Driver/avr-ld.c b/clang/test/Driver/avr-ld.c
index 4042ecb89adf5f1..769eb8763caaf61 100644
--- a/clang/test/Driver/avr-ld.c
+++ b/clang/test/Driver/avr-ld.c
@@ -57,3 +57,24 @@
 // RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld -flto --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKS %s
 // LINKS: {{".*ld.*"}} {{.*}} "--defsym=__DATA_REGION_ORIGIN__=0x800100" 
"-plugin-opt=mcpu=atmega328"
 // LINKS-NOT: "-plugin-opt=thinlto"
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT0 %s
+// LINKT0: {{".*lld.*"}} {{.*}} {{"-T.*avrtiny.x"}}
+// LINKT0-NOT: "-mavrtiny"
+
+// RUN: %clang -### --target=avr -mmcu=atxmega384c3 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT1 %s
+// LINKT1: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT1-NOT: "-mavrxmega6"
+
+// RUN: %clang -### --target=avr -mmcu=atmega328 -fuse-ld=lld --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT2 %s
+// LINKT2: {{".*lld.*"}}
+// LINKT2-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree %s 2>&1 | FileCheck -check-prefix LINKT3 %s
+// LINKT3: {{".*ld.*"}} {{.*}} "-mavrtiny"
+// LINKT3-NOT: {{"-T.*"}}
+
+// RUN: %clang -### --target=avr -mmcu=attiny40 --sysroot 
%S/Inputs/basic_avr_tree -fuse-ld=lld -T 
%S/Inputs/basic_avr_tree/usr/lib/avr/lib/ldscripts/avrxmega6.x %s 2>&1 | 
FileCheck -check-prefix LINKT4 %s
+// LINKT4: {{".*lld.*"}} {{.*}} {{"-T.*avrxmega6.x"}}
+// LINKT4-NOT: {{"-T.*avrtiny.x"}}
+// LINKT4-NOT: "-mavrtiny"

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