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[clang][Driver] Allow -fuse-lld=lld-link when lto is enabled on *windows-msvc targets #113966

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Merged
merged 4 commits into from
Nov 4, 2024
Merged

[clang][Driver] Allow -fuse-lld=lld-link when lto is enabled on *windows-msvc targets #113966

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5259a3b
[clang][Driver] Allow -fuse-lld=lld-link when lto is enabled on *wind…
zhaoshiz Oct 28, 2024
7045455
Update test case to allow possible '.exe' extension
zhaoshiz Oct 29, 2024
1233008
Update test case to conform with naming and RUN conventions
zhaoshiz Oct 31, 2024
4c1ea88
Remove empty '//' lines
zhaoshiz Nov 3, 2024
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2 changes: 1 addition & 1 deletion clang/lib/Driver/Driver.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4035,7 +4035,7 @@ void Driver::handleArguments(Compilation &C, DerivedArgList &Args,
if (C.getDefaultToolChain().getTriple().isWindowsMSVCEnvironment() &&
LTOMode != LTOK_None &&
!Args.getLastArgValue(options::OPT_fuse_ld_EQ)
.equals_insensitive("lld"))
.starts_with_insensitive("lld"))
Diag(clang::diag::err_drv_lto_without_lld);

// If -dumpdir is not specified, give a default prefix derived from the link
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1 change: 1 addition & 0 deletions clang/test/Driver/clang_f_opts.c
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Expand Up @@ -606,6 +606,7 @@
// RUN: %clang -### -S -fjmc -g --target=x86_64-unknown-linux %s 2>&1 | FileCheck -check-prefix=CHECK_JMC %s
// RUN: %clang -### -S -fjmc -g -fno-jmc --target=x86_64-unknown-linux %s 2>&1 | FileCheck -check-prefix=CHECK_NOJMC %s
// RUN: %clang -### -fjmc -g -flto -fuse-ld=lld --target=x86_64-pc-windows-msvc %s 2>&1 | FileCheck -check-prefix=CHECK_NOJMC_LTO %s
// RUN: %clang -### -fjmc -g -flto -fuse-ld=lld-link --target=x86_64-pc-windows-msvc %s 2>&1 | FileCheck -check-prefix=CHECK_NOJMC_LTO %s
// RUN: %clang -### -fjmc -g -flto --target=x86_64-unknown-linux %s 2>&1 | FileCheck -check-prefix=CHECK_JMC_LTO %s
// RUN: %clang -### -fjmc -g -flto -fno-jmc --target=x86_64-unknown-linux %s 2>&1 | FileCheck -check-prefix=CHECK_NOJMC_LTO %s
// CHECK_JMC_WARN: -fjmc requires debug info. Use -g or debug options that enable debugger's stepping function; option ignored
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15 changes: 15 additions & 0 deletions clang/test/Driver/woa-lto.c
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@@ -0,0 +1,15 @@
// REQUIRES: aarch64-registered-target
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"woa-" is not a clear filename prefix. Suggest windows-lto.c

In general, only -### should be used in driver tests to suppress action running. We can then drop REQUIRES: .

//
// RUN: echo "int main() {} " > %t.c
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Just use %s and avoid this temporary .c file.

//
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto -fuse-ld=lld -c %t.c -o %t.o
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto -fuse-ld=lld -### %t.o 2>&1 | FileCheck %s
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto=thin -fuse-ld=lld -c %t.c -o %t.o
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto=thin -fuse-ld=lld -### %t.o 2>&1 | FileCheck %s
//
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto -fuse-ld=lld-link -c %t.c -o %t.o
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto -fuse-ld=lld-link -### %t.o 2>&1 | FileCheck %s
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto=thin -fuse-ld=lld-link -c %t.c -o %t.o
// RUN: %clang --target=aarch64-pc-windows-msvc -O3 -flto=thin -fuse-ld=lld-link -### %t.o 2>&1 | FileCheck %s
//
// CHECK: "{{.*}}lld-link" "-out:a.exe" "-defaultlib:libcmt" "-defaultlib:oldnames"
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