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[WebAssembly] Add exception handling option 

Summary: Add exception handling option to clang.

Reviewers: dschuff

Subscribers: jfb, sbc100, jgravelle-google, sunfish, cfe-commits

Differential Revision: https://reviews.llvm.org/D43681

llvm-svn: 326517
This commit is contained in:
Heejin Ahn 2018-03-02 00:39:16 +00:00
parent 3f547fe857
commit 8b6af22e60
4 changed files with 15 additions and 1 deletions
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2
clang/docs/ClangCommandLineReference.rst
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@ -2352,6 +2352,8 @@ WebAssembly
.. option:: -msimd128, -mno-simd128 .. option:: -msimd128, -mno-simd128
.. option:: -mexception-handling, -mno-exception-handling
X86 X86
--- ---
.. option:: -m3dnow, -mno-3dnow .. option:: -m3dnow, -mno-3dnow

2
clang/include/clang/Driver/Options.td
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@ -1917,6 +1917,8 @@ def mnontrapping_fptoint : Flag<["-"], "mnontrapping-fptoint">, Group<m_wasm_Fea
def mno_nontrapping_fptoint : Flag<["-"], "mno-nontrapping-fptoint">, Group<m_wasm_Features_Group>; def mno_nontrapping_fptoint : Flag<["-"], "mno-nontrapping-fptoint">, Group<m_wasm_Features_Group>;
def msign_ext : Flag<["-"], "msign-ext">, Group<m_wasm_Features_Group>; def msign_ext : Flag<["-"], "msign-ext">, Group<m_wasm_Features_Group>;
def mno_sign_ext : Flag<["-"], "mno-sign-ext">, Group<m_wasm_Features_Group>; def mno_sign_ext : Flag<["-"], "mno-sign-ext">, Group<m_wasm_Features_Group>;
def mexception_handing : Flag<["-"], "mexception-handling">, Group<m_wasm_Features_Group>;
def mno_exception_handing : Flag<["-"], "mno-exception-handling">, Group<m_wasm_Features_Group>;
def mamdgpu_debugger_abi : Joined<["-"], "mamdgpu-debugger-abi=">, def mamdgpu_debugger_abi : Joined<["-"], "mamdgpu-debugger-abi=">,
Flags<[HelpHidden]>, Flags<[HelpHidden]>,

9
clang/lib/Basic/Targets/WebAssembly.cpp
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@ -37,6 +37,7 @@ bool WebAssemblyTargetInfo::hasFeature(StringRef Feature) const {
.Case("simd128", SIMDLevel >= SIMD128) .Case("simd128", SIMDLevel >= SIMD128)
.Case("nontrapping-fptoint", HasNontrappingFPToInt) .Case("nontrapping-fptoint", HasNontrappingFPToInt)
.Case("sign-ext", HasSignExt) .Case("sign-ext", HasSignExt)
.Case("exception-handling", HasExceptionHandling)
.Default(false); .Default(false);
} }
@ -83,6 +84,14 @@ bool WebAssemblyTargetInfo::handleTargetFeatures(
HasSignExt = false; HasSignExt = false;
continue; continue;
} }
if (Feature == "+exception-handling") {
HasExceptionHandling = true;
continue;
}
if (Feature == "-exception-handling") {
HasExceptionHandling = false;
continue;
}
Diags.Report(diag::err_opt_not_valid_with_opt) Diags.Report(diag::err_opt_not_valid_with_opt)
<< Feature << "-target-feature"; << Feature << "-target-feature";

3
clang/lib/Basic/Targets/WebAssembly.h
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@ -32,11 +32,12 @@ class LLVM_LIBRARY_VISIBILITY WebAssemblyTargetInfo : public TargetInfo {
bool HasNontrappingFPToInt; bool HasNontrappingFPToInt;
bool HasSignExt; bool HasSignExt;
bool HasExceptionHandling;
public: public:
explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &) explicit WebAssemblyTargetInfo(const llvm::Triple &T, const TargetOptions &)
: TargetInfo(T), SIMDLevel(NoSIMD), HasNontrappingFPToInt(false), : TargetInfo(T), SIMDLevel(NoSIMD), HasNontrappingFPToInt(false),
HasSignExt(false) { HasSignExt(false), HasExceptionHandling(false) {
NoAsmVariants = true; NoAsmVariants = true;
SuitableAlign = 128; SuitableAlign = 128;
LargeArrayMinWidth = 128; LargeArrayMinWidth = 128;