craig.topper created this revision.
craig.topper added a reviewer: rnk.
-malign-double is currently only implemented in the -cc1 interface. But its
declared in Options.td so it is a driver option too. But you try to use it with
the driver you'll get a message about the option being unused.
This patch teaches the driver to pass the option through to cc1 so it won't be
unused. The Options.td says the option is x86 only but I didn't see any x86
specific code in its impementation in cc1 so not sure if the documentation is
wrong or if I should only pass this option through the driver on x86 targets.
https://reviews.llvm.org/D59624
Files:
clang/lib/Driver/ToolChains/Clang.cpp
clang/test/Driver/malign_double.c
Index: clang/test/Driver/malign_double.c
===================================================================
--- /dev/null
+++ clang/test/Driver/malign_double.c
@@ -0,0 +1,5 @@
+// RUN: %clang -### -malign-double %s 2>&1 | FileCheck %s
+
+// Make sure -malign-double is passed through the driver.
+
+// CHECK: "-malign-double"
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -4547,6 +4547,7 @@
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
+ Args.AddLastArg(CmdArgs, options::OPT_malign_double);
if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
CmdArgs.push_back("-ftrapv-handler");
Index: clang/test/Driver/malign_double.c
===================================================================
--- /dev/null
+++ clang/test/Driver/malign_double.c
@@ -0,0 +1,5 @@
+// RUN: %clang -### -malign-double %s 2>&1 | FileCheck %s
+
+// Make sure -malign-double is passed through the driver.
+
+// CHECK: "-malign-double"
Index: clang/lib/Driver/ToolChains/Clang.cpp
===================================================================
--- clang/lib/Driver/ToolChains/Clang.cpp
+++ clang/lib/Driver/ToolChains/Clang.cpp
@@ -4547,6 +4547,7 @@
Args.AddLastArg(CmdArgs, options::OPT_fdiagnostics_parseable_fixits);
Args.AddLastArg(CmdArgs, options::OPT_ftime_report);
Args.AddLastArg(CmdArgs, options::OPT_ftrapv);
+ Args.AddLastArg(CmdArgs, options::OPT_malign_double);
if (Arg *A = Args.getLastArg(options::OPT_ftrapv_handler_EQ)) {
CmdArgs.push_back("-ftrapv-handler");
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