r275877 - Support -masm= flag for x86 assembly targets.
Yunzhong Gao via cfe-commits
cfe-commits at lists.llvm.org
Mon Jul 18 11:44:51 PDT 2016
Author: ygao
Date: Mon Jul 18 13:44:51 2016
New Revision: 275877
URL: http://llvm.org/viewvc/llvm-project?rev=275877&view=rev
Log:
Support -masm= flag for x86 assembly targets.
For assembly files without .intel_syntax or .att_syntax directives, allow the
-masm= flag to supply a default assembly dialect. For example,
C:\TMP> type intel.s
.text
mov al,0
C:\TMP> clang -masm=intel -c intel.s
Without this patch, one would need to pass an "-mllvm -x86-asm-syntax=" flag
directly to the backend.
C:\TMP> clang -mllvm --x86-asm-syntax=intel -c intel.s
Differentials Review: http://reviews.llvm.org/D22285
Added:
cfe/trunk/test/Driver/masm.s
Modified:
cfe/trunk/lib/Driver/Tools.cpp
cfe/trunk/lib/Driver/Tools.h
Modified: cfe/trunk/lib/Driver/Tools.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.cpp?rev=275877&r1=275876&r2=275877&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.cpp (original)
+++ cfe/trunk/lib/Driver/Tools.cpp Mon Jul 18 13:44:51 2016
@@ -6460,6 +6460,20 @@ void ClangAs::AddMIPSTargetArgs(const Ar
CmdArgs.push_back(ABIName.data());
}
+void ClangAs::AddX86TargetArgs(const ArgList &Args,
+ ArgStringList &CmdArgs) const {
+ if (Arg *A = Args.getLastArg(options::OPT_masm_EQ)) {
+ StringRef Value = A->getValue();
+ if (Value == "intel" || Value == "att") {
+ CmdArgs.push_back("-mllvm");
+ CmdArgs.push_back(Args.MakeArgString("-x86-asm-syntax=" + Value));
+ } else {
+ getToolChain().getDriver().Diag(diag::err_drv_unsupported_option_argument)
+ << A->getOption().getName() << Value;
+ }
+ }
+}
+
void ClangAs::ConstructJob(Compilation &C, const JobAction &JA,
const InputInfo &Output, const InputInfoList &Inputs,
const ArgList &Args,
@@ -6607,6 +6621,11 @@ void ClangAs::ConstructJob(Compilation &
case llvm::Triple::mips64el:
AddMIPSTargetArgs(Args, CmdArgs);
break;
+
+ case llvm::Triple::x86:
+ case llvm::Triple::x86_64:
+ AddX86TargetArgs(Args, CmdArgs);
+ break;
}
// Consume all the warning flags. Usually this would be handled more
Modified: cfe/trunk/lib/Driver/Tools.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/Tools.h?rev=275877&r1=275876&r2=275877&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/Tools.h (original)
+++ cfe/trunk/lib/Driver/Tools.h Mon Jul 18 13:44:51 2016
@@ -125,6 +125,8 @@ public:
: Tool("clang::as", "clang integrated assembler", TC, RF_Full) {}
void AddMIPSTargetArgs(const llvm::opt::ArgList &Args,
llvm::opt::ArgStringList &CmdArgs) const;
+ void AddX86TargetArgs(const llvm::opt::ArgList &Args,
+ llvm::opt::ArgStringList &CmdArgs) const;
bool hasGoodDiagnostics() const override { return true; }
bool hasIntegratedAssembler() const override { return false; }
bool hasIntegratedCPP() const override { return false; }
Added: cfe/trunk/test/Driver/masm.s
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/masm.s?rev=275877&view=auto
==============================================================================
--- cfe/trunk/test/Driver/masm.s (added)
+++ cfe/trunk/test/Driver/masm.s Mon Jul 18 13:44:51 2016
@@ -0,0 +1,11 @@
+// RUN: %clang -target i386-unknown-linux -masm=intel -c %s -### 2>&1 | FileCheck --check-prefix=CHECK-INTEL %s
+// RUN: %clang -target i386-unknown-linux -masm=att -c %s -### 2>&1 | FileCheck --check-prefix=CHECK-ATT %s
+// RUN: %clang -target i386-unknown-linux -c -masm=somerequired %s -### 2>&1 | FileCheck --check-prefix=CHECK-SOMEREQUIRED %s
+// RUN: %clang -target arm-unknown-eabi -c -masm=intel %s -### 2>&1 | FileCheck --check-prefix=CHECK-ARM %s
+
+// CHECK-INTEL: -x86-asm-syntax=intel
+// CHECK-ATT: -x86-asm-syntax=att
+// CHECK-SOMEREQUIRED: error: unsupported argument 'somerequired' to option 'masm='
+// CHECK-ARM: warning: argument unused during compilation: '-masm=intel'
+.text
+mov al, 0
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