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This patch teaches `clang` to recognize the `auto` option for `-mtune`. The
option is identical to the `mtune` option `native`.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D139343
Files:
clang/lib/Driver/ToolChains/Clang.cpp
clang/test/Driver/ppc-cpus.c
Index: clang/test/Driver/ppc-cpus.c
===================================================================
--- clang/test/Driver/ppc-cpus.c
+++ clang/test/Driver/ppc-cpus.c
@@ -22,3 +22,5 @@
// RUN: %clang -### -c --target=powerpc64 %s -mcpu=generic -mtune=pwr9 2>&1 |
FileCheck %s --check-prefix=TUNE
// TUNE: "-target-cpu" "ppc64" "-tune-cpu" "pwr9"
+// RUN: %clang -### -c --target=powerpc64 %s -mcpu=generic -mtune=auto 2>&1 |
FileCheck %s --check-prefix=NO_AUTO
+// NO_AUTO-NOT: "-target-cpu" "ppc64" "-tune-cpu" "auto"
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -1990,7 +1990,8 @@
ArgStringList &CmdArgs) const {
if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
CmdArgs.push_back("-tune-cpu");
- if (strcmp(A->getValue(), "native") == 0)
+ if (strcmp(A->getValue(), "native") == 0 ||
+ strcmp(A->getValue(), "auto") == 0)
CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));
else
CmdArgs.push_back(A->getValue());
Index: clang/test/Driver/ppc-cpus.c
===================================================================
--- clang/test/Driver/ppc-cpus.c
+++ clang/test/Driver/ppc-cpus.c
@@ -22,3 +22,5 @@
// RUN: %clang -### -c --target=powerpc64 %s -mcpu=generic -mtune=pwr9 2>&1 | FileCheck %s --check-prefix=TUNE
// TUNE: "-target-cpu" "ppc64" "-tune-cpu" "pwr9"
+// RUN: %clang -### -c --target=powerpc64 %s -mcpu=generic -mtune=auto 2>&1 | FileCheck %s --check-prefix=NO_AUTO
+// NO_AUTO-NOT: "-target-cpu" "ppc64" "-tune-cpu" "auto"
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -1990,7 +1990,8 @@
ArgStringList &CmdArgs) const {
if (const Arg *A = Args.getLastArg(options::OPT_mtune_EQ)) {
CmdArgs.push_back("-tune-cpu");
- if (strcmp(A->getValue(), "native") == 0)
+ if (strcmp(A->getValue(), "native") == 0 ||
+ strcmp(A->getValue(), "auto") == 0)
CmdArgs.push_back(Args.MakeArgString(llvm::sys::getHostCPUName()));
else
CmdArgs.push_back(A->getValue());
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