[WebAssembly] Support f16 libcalls
Add support for f16 libcalls in WebAssembly. This entails adding signatures
for the remaining F16 libcalls, and renaming gnu_f2h_ieee/gnu_h2f_ieee to
truncsfhf2/extendhfsf2 for consistency between f32 and f64/f128 (compiler-rt
already supports this).
Differential Revision: https://reviews.llvm.org/D61287
Reviewer: dschuff
llvm-svn: 359600
diff --git a/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp b/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
index e2d0ad4..ab06a98 100644
--- a/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
+++ b/llvm/lib/Target/WebAssembly/WebAssemblyRuntimeLibcallSignatures.cpp
@@ -51,6 +51,8 @@
f64_func_f64_i32,
f64_func_i64_i64,
i16_func_f32,
+ i16_func_f64,
+ i16_func_i64_i64,
i8_func_i8_i8,
func_f32_iPTR_iPTR,
func_f64_iPTR_iPTR,
@@ -228,13 +230,15 @@
Table[RTLIB::FMAX_F128] = func_iPTR_i64_i64_i64_i64;
// Conversion
- // All F80 and PPCF128 routines are unspported.
+ // All F80 and PPCF128 routines are unsupported.
Table[RTLIB::FPEXT_F64_F128] = func_iPTR_f64;
Table[RTLIB::FPEXT_F32_F128] = func_iPTR_f32;
Table[RTLIB::FPEXT_F32_F64] = f64_func_f32;
Table[RTLIB::FPEXT_F16_F32] = f32_func_i16;
Table[RTLIB::FPROUND_F32_F16] = i16_func_f32;
+ Table[RTLIB::FPROUND_F64_F16] = i16_func_f64;
Table[RTLIB::FPROUND_F64_F32] = f32_func_f64;
+ Table[RTLIB::FPROUND_F128_F16] = i16_func_i64_i64;
Table[RTLIB::FPROUND_F128_F32] = f32_func_i64_i64;
Table[RTLIB::FPROUND_F128_F64] = f64_func_i64_i64;
Table[RTLIB::FPTOSINT_F32_I32] = i32_func_f32;
@@ -482,6 +486,10 @@
Map[NameLibcall.first] = NameLibcall.second;
}
}
+ // Override the __gnu_f2h_ieee/__gnu_h2f_ieee names so that the f32 name is
+ // consistent with the f64 and f128 names.
+ Map["__extendhfsf2"] = RTLIB::FPEXT_F16_F32;
+ Map["__truncsfhf2"] = RTLIB::FPROUND_F32_F16;
}
};
@@ -595,6 +603,15 @@
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::F32);
break;
+ case i16_func_f64:
+ Rets.push_back(wasm::ValType::I32);
+ Params.push_back(wasm::ValType::F64);
+ break;
+ case i16_func_i64_i64:
+ Rets.push_back(wasm::ValType::I32);
+ Params.push_back(wasm::ValType::I64);
+ Params.push_back(wasm::ValType::I64);
+ break;
case i8_func_i8_i8:
Rets.push_back(wasm::ValType::I32);
Params.push_back(wasm::ValType::I32);