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[Driver] Pass -O* to the gold plugin via -plugin-opt 

The gold plugin understands -O0..-O3, but these are not currently being passed to it.

llvm-svn: 256146
This commit is contained in:
James Molloy 2015-12-21 10:44:36 +00:00
parent 0b8ed1d162
commit f97fdae4d0
2 changed files with 19 additions and 3 deletions
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13
clang/lib/Driver/Tools.cpp
View File

@ -1796,6 +1796,19 @@ static void AddGoldPlugin(const ToolChain &ToolChain, const ArgList &Args,
if (!CPU.empty())
CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=mcpu=") + CPU));
if (Arg *A = Args.getLastArg(options::OPT_O_Group)) {
StringRef OOpt;
if (A->getOption().matches(options::OPT_O4) ||
A->getOption().matches(options::OPT_Ofast))
OOpt = "3";
else if (A->getOption().matches(options::OPT_O))
OOpt = A->getValue();
else if (A->getOption().matches(options::OPT_O0))
OOpt = "0";
if (!OOpt.empty())
CmdArgs.push_back(Args.MakeArgString(Twine("-plugin-opt=O") + OOpt));
}
if (IsThinLTO)
CmdArgs.push_back("-plugin-opt=thinlto");
}

9
clang/test/Driver/gold-lto.c
View File

@ -1,23 +1,26 @@
// RUN: touch %t.o
//
// RUN: %clang -target x86_64-unknown-linux -### %t.o -flto 2>&1 \
// RUN: -Wl,-plugin-opt=foo \
// RUN: -Wl,-plugin-opt=foo -O3 \
// RUN: | FileCheck %s --check-prefix=CHECK-X86-64-BASIC
// CHECK-X86-64-BASIC: "-plugin" "{{.*}}/LLVMgold.so"
// CHECK-X86-64-BASIC: "-plugin-opt=O3"
// CHECK-X86-64-BASIC: "-plugin-opt=foo"
//
// RUN: %clang -target x86_64-unknown-linux -### %t.o -flto 2>&1 \
// RUN: -march=corei7 -Wl,-plugin-opt=foo \
// RUN: -march=corei7 -Wl,-plugin-opt=foo -Ofast \
// RUN: | FileCheck %s --check-prefix=CHECK-X86-64-COREI7
// CHECK-X86-64-COREI7: "-plugin" "{{.*}}/LLVMgold.so"
// CHECK-X86-64-COREI7: "-plugin-opt=mcpu=corei7"
// CHECK-X86-64-COREI7: "-plugin-opt=O3"
// CHECK-X86-64-COREI7: "-plugin-opt=foo"
//
// RUN: %clang -target arm-unknown-linux -### %t.o -flto 2>&1 \
// RUN: -march=armv7a -Wl,-plugin-opt=foo \
// RUN: -march=armv7a -Wl,-plugin-opt=foo -O0 \
// RUN: | FileCheck %s --check-prefix=CHECK-ARM-V7A
// CHECK-ARM-V7A: "-plugin" "{{.*}}/LLVMgold.so"
// CHECK-ARM-V7A: "-plugin-opt=mcpu=cortex-a8"
// CHECK-ARM-V7A: "-plugin-opt=O0"
// CHECK-ARM-V7A: "-plugin-opt=foo"
//
// RUN: %clang -target i686-linux-android -### %t.o -flto 2>&1 \